Method and system for passive cooling and disinfection of defined space

Abstract

Methods and systems for passive cooling and disinfection are provided. The system includes: a top cover positioned to provide shielding for a conditioned space beneath the top cover; and a radiation film disposed on an upper surface of the top cover and configured to provide radiation cooling for the conditioned space. In some cases, one or more platforms are positioned below the top cover to define an adjusted space. The positioning mechanism is used for enabling at least one of the top cover and the one or more platforms to move upwards and downwards between the opening position and the closing position so as to adjust the height of the adjusted space.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of Indian Provisional Patent Application No. 202241032466 filed on June 7, 2022 and Indian Provisional Patent Application No. 202241043837 filed on August 1, 2022. The disclosure of the prior application is considered to be part of the disclosure of this application and is incorporated in its entirety into this application. Technical Field

[0003] The present invention generally relates to systems, methods and designs for passive cooling and / or disinfection of a conditioned space. More specifically, the present invention relates to a retractable device for providing passive cooling and / or disinfection of a conditioned space. Background Art

[0004] One-third of food is wasted worldwide. This waste also results in significant greenhouse gas emissions. The largest component of food waste is fruit and vegetables. Many fruits and vegetables in developing countries are sold through street vendors. Studies have shown that the cumulative losses caused by millions of street vendors around the world total billions of dollars each year, which accounts for a large proportion of global food loss and waste. Summary of the invention

[0005] It would be desirable to provide a cost-effective means for passive cooling and disinfection of confined spaces, particularly to provide vendors with an affordable, comprehensive vending platform.

[0006] Briefly, in one aspect, the present invention describes a device for providing a conditioned space. The device includes: a top cover positioned to provide shielding for a conditioned space below the top cover; and a radiant film disposed on an upper surface of the top cover and configured to provide radiative cooling for the conditioned space. In some cases, the device also includes one or more platforms positioned below the top cover to define the conditioned space. In some cases, the device also includes a positioning mechanism configured to move at least one of the top cover and the one or more platforms upward and downward between an open position and a closed position to adjust the height of the conditioned space.

[0007] Various advantages are obtained in exemplary embodiments of the present invention. One such advantage is that the modular design of the device with a height-adjustable canopy or cover provides a retrofittable and cost-effective solution for cooling and / or disinfecting in a conditioned space.

[0008] Various aspects and advantages of exemplary embodiments of the present invention have been summarized. The above summary is not intended to describe each illustrated embodiment. Other features and aspects will become apparent by considering the following detailed description and accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Reference is made to the accompanying drawings which form a part hereof, and which illustrate embodiments in which the systems and methods described in this specification may be implemented.

[0010] Figure 1A is a schematic diagram of an apparatus according to one embodiment.

[0011] Figure 1B is a side perspective view of an apparatus for providing a conditioned space according to one embodiment.

[0012] Figure 2A is a side perspective view of a cart according to one embodiment.

[0013] Figure 2B is a side perspective view of a cart according to another embodiment.

[0014] Figure 2C is a side perspective view of a top cover according to one embodiment.

[0015] Figure 2D yes Figure 2C Another side perspective view of the top cover.

[0016] Figure 3 is a side perspective view of a cart according to one embodiment.

[0017] Figure 4A is a schematic diagram of a scissor mechanism according to one embodiment.

[0018] Figure 4B is in closed position Figure 4A Schematic diagram of the scissor mechanism.

[0019] Figure 4C is in the open position Figure 4A Schematic diagram of the scissor mechanism.

[0020] Figure 5A is a side perspective view of a wheelbarrow including a chain and sprocket mechanism according to one embodiment.

[0021] Figure 5B is in closed position Figure 5B Side perspective view of a chain and sprocket mechanism.

[0022] Figure 5C is in closed position Figure 5B Side perspective view of a chain and sprocket mechanism.

[0023] Fig. 6A is a side perspective view of a cart including a folding box according to one embodiment.

[0024] Figure 6B It is in the expanded state Fig. 6A Side perspective view of a folding box.

[0025] Figure 6C is in a closed state Fig. 6A Side perspective view of a folding box.

[0026] Fig. 7A is a side perspective view of a cart including retractable struts according to another embodiment.

[0027] Figure 7B is in open state Fig. 7A Cross-sectional view of a trolley.

[0028] Figure 7C It is in closed state Fig. 7A Cross-sectional view of a trolley.

[0029] Fig.7D is a side perspective view of a cart according to one embodiment.

[0030] Fig. 7E is in open state Fig.7D An enlarged partial view of a wheelbarrow.

[0031] Figure 7F It is in closed state Fig.7D An enlarged partial view of a wheelbarrow.

[0032] Figure 7G is a side perspective view of a cart according to one embodiment.

[0033] Figure 7H yes Figure 7G An enlarged partial view of a wheelbarrow.

[0034] Fig. 8A is a cross-sectional view of an apparatus including a powered water distribution mechanism according to one embodiment.

[0035] Figure 8B is a cross-sectional view of an apparatus including a powered water distribution mechanism according to another embodiment.

[0036] Figure 8C is a schematic diagram of a water treatment system.

[0037] Fig.9A is a cross-sectional view of a device including a thermal storage tank in a first position according to one embodiment.

[0038] Fig. 9B It is in the second position Fig.9A A cross-sectional view of a heat storage tank.

[0039] Fig. 10Ais a cross-sectional view of an apparatus including a dual tank cooling system in a first state according to one embodiment.

[0040] Fig. 10B It includes the second state Fig. 10A A cross-sectional view of an apparatus of a dual-box cooling system.

[0041] Fig.11A is a cross-sectional view of a device including a thermosyphon cooling mechanism according to one embodiment.

[0042] Fig. 11B is a schematic diagram of a thermosyphon cooling mechanism according to one embodiment.

[0043] Fig.12 is a side view of an apparatus including a cooling system including a thermal energy storage tank and an air duct according to one embodiment.

[0044] Specific embodiments of the present invention are described herein with reference to the accompanying drawings; however, it should be understood that the disclosed embodiments are merely examples of the present invention, which may be embodied in various forms. Well-known functions or configurations are not described in detail to avoid obscuring the present invention with unnecessary detail. Therefore, the specific structural and functional details disclosed herein should not be interpreted as limiting, but only as a basis for the claims and as a representative basis for teaching those skilled in the art to adopt the present invention differently with virtually any appropriate detailed structure. In this specification and the accompanying drawings, similar reference numerals represent similar elements that can perform the same, similar, or equivalent functions. DETAILED DESCRIPTION

[0045] The present invention generally relates to systems, methods and designs for passive cooling and / or disinfection of conditioned spaces. More specifically, the present invention relates to a retractable device that provides passive cooling and / or disinfection for conditioned spaces. In some cases, the retractable device may have a modular trolley structure with or without wheels. The trolley includes a platform for holding items (e.g., perishables) and a retractable top cover with a radiant film that provides passive radiative cooling to the space below the top cover. In some cases, the retractable device also includes an electric water mechanism and a cooling mechanism that provides disinfection and further cooling to the items on the platform. The systems and methods described herein provide passive cooling and disinfection in conditioned spaces. In other words, the systems and methods can be implemented without a substantial external power source. For example, the cooling and disinfection functions can be operated by manual action of a user, and optionally, supplemented by a small power source such as a battery (e.g., a solar cell, a 9V battery, a battery pack, a battery charged by an axle generator, etc.). In some cases, the systems described herein may include a mobile device such as a navigation device (e.g., a GPS) to provide geographic location and time information.

[0046] Some embodiments of the present application are described in detail with reference to the accompanying drawings so that those skilled in the art can more easily understand the advantages and features of the present application. The terms "near", "far", "top", "bottom", "left", "right", etc. described in the present application are defined according to the typical viewing angles of those skilled in the art and for the convenience of description. These terms are not limited to a specific direction.

[0047] Figure 1A is a schematic diagram of an apparatus 100 according to an embodiment. The apparatus 100 is configured to provide a conditioned space 3. The apparatus 100 includes: a platform 10; a top cover 20 positioned above the platform 10 to define the conditioned space 3 therebetween; and a positioning mechanism 30 configured to move at least one of the top cover 20 and the platform 10 upward and downward (as indicated by arrow 31) relative to each other between an open position and a closed position to adjust the height of the conditioned space 3. The top cover 20 has an upper surface 22, at which a radiation film 24 is arranged on a side opposite to the platform 10. The radiation film 24 is configured to provide radiation cooling for the conditioned space 3.

[0048] The radiation film 24 can be arranged on a base material or substrate with a structural support to enhance the overall structural integrity of its top cover 20. The radiation film 24 can have a thickness of, for example, between 10 microns and 200 microns or between 30 microns and 100 microns. An exemplary radiation film can have a multilayer structure with a thickness of about 80 microns. The base material can include a thermally conductive material, such as a metal (e.g., aluminum) plate. The structural support can be a combination of wood, steel, fabric, and any other suitable material. The radiation film 24 can reflect a large amount of incident sunlight (as indicated by arrows "i" and "r") and dissipate heat to the sky in the form of radiant energy (as indicated by arrows "r1"). It should be understood that similar arrows "i", "r", and "r1" are used in other figures to indicate the same content. Suitable radiation films used herein can have high reflectivity at solar wavelengths and high emissivity at longer infrared wavelengths. The cooling effect from the radiation film occurs through a natural phenomenon called radiation cooling. Radiative cooling refers to a process in which a body can emit radiant heat energy absorbed by normal convection and conduction processes. Radiative films can cool the base material or substrate to below ambient temperature without electrical input and without evaporating water. In some cases, radiative films can even cool below ambient temperature in direct sunlight. In some cases, passive radiative cooling films can provide, for example, up to 20W / m during the day and 20W / m at night. 2 Up to 100W / m 2 and 50W / m 2 Up to 200W / m 2 of net cooling power, which can cool the underlying substrate, for example, 2°C to 8°C below ambient temperature.

[0049] In some cases, the radiation film 24 can be formed by applying a surface coating having radiation cooling properties to the upper surface 22 of the top cover 20. Exemplary coating compositions for forming a radiation cooling surface coating are described in U.S. Pat. No. 7,503,971, which is incorporated herein by reference. An exemplary composition can include a solar reflective pigment and a certain amount of microspheres, which provide high reflectivity to solar radiation. The microspheres can enhance the emissivity of the coating so that the coating has a high radiative emissivity in the wavelength range of 8 microns to 13 microns to emit thermal energy in this wavelength range.

[0050] In some cases, the radiation film 24 may include a solar reflective film having a multilayer optical structure with passive radiation cooling capabilities. It should be understood that the radiation film used herein may have a variety of configurations and compositions, as long as it can exhibit passive radiation cooling capabilities, have a reflectivity at solar wavelengths and an emissivity at longer infrared wavelengths (e.g., 8 microns to 13 microns) that is high enough to provide a cooling effect.

[0051] When the device 100 is used as a vending machine (e.g., a vendor cart), perishables 4 can be arranged on the platform 10 within the conditioned space 3 to increase the shelf life of the perishables, reduce weight loss, achieve evaporative cooling, maintain freshness, etc. It should be understood that the device 100 can be used in any desired application to provide a conditioned space with passive cooling and disinfection and thermal storage, and the perishables 4 can be any other items to be positioned within or near the conditioned space 3.

[0052] The devices or systems described herein may have a retrofit design for various applications. The retrofit design allows various components of the device / system to be added or removed for use together as an assembly, or used separately, to provide the desired cooling and / or disinfecting function to the conditioned space under the canopy. In some cases, the device may include a canopy and one or more platforms that can be assembled into a cart, such as a vendor's cart. In some cases, a canopy with a radiant film and a suitable mounting mechanism can be provided to an existing cart with a platform. For example, Figure 1A The top cover 20 can be used alone without being assembled with the platform 10 and the positioning mechanism 30. In some cases, the devices or systems described herein may include multiple platforms arranged in various suitable configurations for use, for example, in poultry delivery, vegetable harvesting, etc. For example, Figure 1A The platform 10 may have multiple layers or sub-platforms in a layered structure to hold items 4. In some cases, the device can be used for a shelter structure (e.g., a bus shelter, a family shelter), where a roof with a radiant film can be provided without using a positioning mechanism and / or platform.

[0053] Figure 1BAn apparatus 130 is illustrated according to one embodiment carried by a wheelbarrow 11 to provide an adjusted space. The apparatus 130 may include Figure 1A The device 130 may include any of the cover or top cover structures described herein. Figure 1B In the described embodiment, a cover or cap 130 is connected to the platform 10 carried by the wheelbarrow 11. It should be understood that the device 130 can have a modified design for various applications. In some cases, the device 130 can include one or more caps and one or more platforms, which can be carried or supported by any suitable carrier (e.g., a wheelbarrow, a handcart, etc.). In some cases, one or more platforms can be integrated with the carrier, and one or more caps can be assembled to the carrier.

[0054] exist Figure 1B In the described embodiment, the cover or top cover 130 includes a frame 135, which supports one or more sides 134 and a door 136. The side 134 and / or the door 136 can be made of a transparent or translucent material (e.g., a polycarbonate sheet). In some embodiments, the side 134 and / or the door 136 can have a mesh structure. The radiation film 24 is arranged on the upper surface 132 of the cover 130 on the side opposite to the platform 10. The upper surface 132 can have an angle of inclination relative to the platform 10, which is in the range of, for example, 0 to 5 degrees or about 3 degrees. The door 136 can be opened by rotating around the edge of the frame 135 via, for example, a hinge 131 in the direction indicated by the arrow 131a.

[0055] In one embodiment, the upper surface 132 as one part can be rotated together with the door 136 in the direction indicated by the arrow 131b. In this way, the upper surface 132 can be opened together with the door 136. In another embodiment, when the door 136 is opened, a portion of the upper surface 132 can be fixed to the frame 135, and another portion can be rotated along the folding line 133 in the direction indicated by the arrow 131c via, for example, the hinge 131. In this way, a portion (e.g., half) of the upper surface 132 can be opened together with the door 136. By opening at least a portion of the upper surface 132 together with the door 136, the user can conveniently load goods into the conditioned space.

[0056] The platform 10 may have any of the platform structures described herein. Figure 1BIn the depicted embodiment, the platform 10 is connected to the upper edge of the tray 113 of the wheelbarrow 11, for example, via one or more mounting brackets. The cover 130 can be assembled with the platform 10, wherein the door 136 faces the side not blocked by the handle 115 or the wheel 5 of the wheelbarrow 11. The frame 135 of the cover 130 can be connected to the platform 10 by any suitable mounting mechanism. One or more latches 12 are provided to lock the door 136 on the platform 10. The platform 10 has an opening 73 to access the interior of the tray 113. A cover can be provided to secure the opening 73 and store cargo within the tray 113. The cover 130 and the platform 10 can each have a frame structure having structural supports made of wood, steel, fabric, metal plates, or a combination thereof.

[0057] Figure 2A is a side perspective view of a cart 200 according to one embodiment. The cart 200 includes a platform 10, a canopy 20 positioned above the platform 10 to define an regulated space therebetween, and a plurality of retractable struts 32 connecting the canopy 20 to the platform 10. The struts 32 may be individually retractable to allow the canopy 20 to be retracted so that it may be used as a shield for items on the platform 10 for overnight storage utilizing a locking system. Additionally, the height of the canopy relative to the platform 10 may be adjusted as desired by adjusting the retractable struts 32. The cart 200 also includes a storage box 7 of a fixed or removable type that may be provided with a locking option on the bottom of the platform 10. The box 7 has an opening and a cover 71 on the upper surface of the platform 10 to secure and store goods within the cart after a sale. In Figure 2A and Figure 2B In the depicted embodiment, optional wheels 5 are provided to allow the trolley 200 to be moved from one location to another.

[0058] like Figure 2A As shown, a cutout 15 is provided on the platform 10 to accommodate a person under the shelter of the roof 20. Figure 2B In another embodiment described, the cart 200' includes a retractable overhang 26 attached to one side of the top cover 20 to provide a shelter when it is in the extended position. The retractable overhang 26 may have a radiant film 24 on the top cover 20 to extend over its upper surface to provide radiant cooling. The retractable overhang 26 may be detachable from the top cover 20 and may be mounted on either side of the top cover 20.

[0059] Figure 2C is a side perspective view of a top cover 20 according to one embodiment. Figure 2D yes Figure 2CAnother side perspective view of the top cover 20. The top cover 20 includes an inclined upper surface 22, on which a radiant film 24 is applied. In some cases, the upper surface 22 may have an angle of inclination relative to the platform 10, the angle of inclination being in the range of, for example, 5 to 15 degrees. It should be understood that the angle of inclination can be adjusted by, for example, adjusting the respective heights of the pillars 32 when the cart is in the open position. In some cases, the upper surface 22 of the top cover 20 may be flat. The upper surface 22 may also include one or more corrugated structures (e.g., ridges and / or grooves). The retractable overhang 26 is attached to the side 21 of the top cover 10 and may extend as part of the upper surface 22 to provide shielding. A gas spring 29 is provided on the side 21 to support the retractable overhang 26. The sides 21, 23, 25, 27 together with the upper surface 22 define an at least partially enclosed space 51, which has an opening facing the conditioned space 3 when the top cover 20 is assembled to the cart 200, 200', as shown in FIG. FIG. 2A to FIG. 2B shown.

[0060] The roof described herein can have a frame structure having structural supports made of, for example, wood, steel, fabric, sheet metal, and any other suitable material combination in any suitable configuration. In some cases, the roof can include one or more movable or removable parts (e.g., covers) to allow opening or partial movement of the roof. The roof can have a flat or structured upper surface with a radiant film or material disposed thereon. The roof surface can be inclined or horizontal. Figure 2D As shown, a sealing mechanism 28 is disposed on the bottom edge of the top cover 20 and is configured to secure the engagement of the top cover 20 and the platform 10 in the closed position. In some cases, the sealing mechanism may include a rubber ring that secures the base of the top cover 10 to the platform 10 in the closed state and prevents temperature from leaking out of the enclosed space.

[0061] In various embodiments, the top cover is connected to the platform via a positioning mechanism, which facilitates the upward and downward movement of at least one of the top cover and the platform relative to each other and locks the device in a desired position. In some cases, the positioning mechanism moves the top cover up and down relative to the platform, which can be fixed. In some cases, the platform can move up and down using the same or different positioning mechanisms. At least one pillar, preferably a plurality of pillars (e.g., 3 or 4 pillars) is provided, which can smoothly guide the movement of the top cover and the platform relative to each other.

[0062] exist Figure 3 In the illustrated embodiment, the positioning mechanism 30 includes a scissor mechanism 40 positioned between two pillars 32 on one side of the trolley 300 to facilitate opening and closing of the trolley 300. Figure 4AAs further shown, the scissor mechanism 40 includes first and second support members 42, 44, which are pivotally connected at a riveted joint 41 in a cross "X" pattern. The scissor mechanism 40 also includes a moving mechanism located at the platform 10 to move the first end 42a of the first support member 42, and a mounting block 422 mounted on the top cover 20 to be pivotally connected to the second end 42b of the first support member 42. The moving mechanism includes a handle 48 and a lead screw 46 that is rotated by manually turning the handle 48. The scissor mechanism 40 also includes a slide 49 mounted on the top cover 20 to guide the first end 44a of the second support member 44, and a mounting block 442 mounted on the platform 10 to be pivotally connected to the second end 44b of the second support member 44. It should be understood that the moving mechanism may include any suitable device or component, which is as shown in FIG. Figure 4B The closed position shown and Figure 4C Any position between the open positions shown operates the scissor mechanism 40. The scissor mechanism 40 may be manually actuated (eg, by using a handle 48) or may be motor actuated by a small power source such as a solar cell.

[0063] exist Figure 5A In the illustrated embodiment, the positioning mechanism 30 includes a chain and sprocket mechanism 50 positioned between two pillars 32 on one side of the trolley 300 to facilitate opening and closing of the trolley 300. The chain and sprocket mechanism 50 has a first end 50a connected to the platform 10 and a second end 50b connected to the top cover 20. A driven mechanism 52 is provided to Figure 5B The closed position shown and Figure 5C Any position between the open positions shown moves the second end 50b away from or toward the first end 50a. It should be understood that any suitable cascading mechanism other than a chain and sprocket mechanism may be used to facilitate the upward and downward movement of the top cover 20 and lock it in a desired position.

[0064] In some cases, the detent mechanism also includes a retractable cover that encloses its components to prevent undesired interaction with the components and subsequent damage. The cover also protects the detent mechanism from foreign matter that could impede its function and avoids direct exposure of the mechanism parts to the environment. Fig. 6A In the embodiment described, a bellows 37 is provided to enclose the positioning mechanisms 40, 50 and the adjacent support posts 32. The bellows 37 may be provided in a manner such as Figure 6B The open state shown and Figure 6C The closed state is shown collapsed and expanded.

[0065] In some cases, one or more retractable struts may be used in place of fixed struts and positioning mechanisms. The use of retractable struts provides the additional advantage of avoiding protrusion of the struts when the trolley is in the closed position. Fig. 7Ais a side perspective view of a trolley 400 including a retractable support column 32 having a telescopic structure, wherein a first end 32a and a second end 32b are respectively fixed to the platform 10 and the top cover 20 to prevent the support column from protruding when the trolley 400 is in a closed state. Figure 7B is a cross-sectional view of the trolley 400' in an open state. Figure 7C It is in closed state Figure 7B The retractable support 32 includes a telescopic leg assembly 34, which includes a sliding mechanism so that the first end 32a is received by the leg 34 and the second end 32b is fixed to the top cover 20 to prevent the trolley 400' from being deformed when the trolley 400' is in a position such as Figure 7C The closed position is shown with the struts protruding. Figure 7B Also shown is a sloped top cover 20 having an angle in the range of 5 to 15 degrees relative to the platform 10 .

[0066] Fig.7D 1 is a side perspective view of a cart 140 according to one embodiment. The top cover 20 can be in an open position ( Fig. 7E ) and closed position ( Figure 7F ) to adjust the height of the regulated space therebetween. Fig.7D In the illustrated embodiment, a winch or worm gear mechanism 142 is connected to the edge 10a of the platform 10. A pulley 144 is connected to the edge 20a of the top cover 20, thereby carrying a flexible rope 143 connected to the winch or worm gear mechanism 142. The user can manually operate the winch or worm gear mechanism 142 to move the top cover 20 up and down, thereby facilitating the opening and closing of the trolley 140. One or more rollers 146 are provided on the edge 20a of the top cover 20 to guide the edge 20a to move up and down along the support column 32. FIG. 7D to FIG. 7F In the depicted embodiment, a gear system including a winch or worm gear mechanism 142, pulleys 144, ropes 143, and rollers 146 may be provided on each opposing side of the cart 140. Two users may collaborate on each side to manually move the top cover 20 up and down using the winch or worm gear mechanism 142.

[0067] Figure 7G is a side perspective view of a cart 150 according to one embodiment. Figure 7H An enlarged partial view of the cart 150 is illustrated. The top cover 20 can be in an open position relative to the platform 10 (see, e.g. Figure 7B or Fig. 7E ) and closed position ( Figure 7C or Figure 7F ) to adjust the height of the regulated space between the top cover 20 and the platform 10. Figures 7G to 7HIn the described embodiment, a pin locking mechanism 152 is provided to manually lock the top cover 20 on the pillar 32 when the trolley 150 is in the open position. The pin locking mechanism 152 may include a sleeve 153 connected to the edge 20a of the top cover 20 to receive the pillar 32. The sleeve 153 and the pillar 32 may have cross-sectional shapes that match each other, such as a square shape, a circular shape, etc. The locking pin 155 may be inserted into the aligned holes of the sleeve 153 and the pillar 32 to lock the top cover 20 in place. It should be understood that the pillar 32 may have one or more holes located at different heights so that the pin locking mechanism 152 can lock the top cover 20 at a corresponding height relative to the platform 10.

[0068] In various embodiments described herein, charged water can be provided to be sprayed or sprayed (e.g., in the form of a mist) on items (e.g., perishables) arranged in a conditioned space of an apparatus (e.g., a cart). In some cases, the water mist can be automatically sprayed on the items at fixed time intervals, or it can also be manually operated by a user (e.g., a vendor). The water that generates the mist can be radiatively cooled by the cart itself, or it can be cold water filled into the charged water generation system. The distribution or spraying of charged water can be achieved by the various methods and systems described herein. Charged water spraying increases the shelf life of perishables, reduces weight loss, achieves evaporative cooling, and maintains freshness for longer.

[0069] Generating charged water from a passively cooled thermal storage device can reduce weight loss and increase shelf life by controlling microbial growth. In some cases, charged water can be generated remotely in batches or on-site so that it can be provided to users (such as vendors) for spraying on products. In some cases, a cold fluid (such as water) from a cold fluid reservoir can be used to generate a charged mist using a piezoelectric method for spraying on the product. In addition to controlling microbial growth, the use of charged water can also cool the product when it evaporates.

[0070] Fig. 8A is a cross-sectional view of an apparatus 500 including a powered water distribution mechanism 510 according to one embodiment. Figure 8B is a cross-sectional view of an apparatus 500 including a charged water distribution mechanism according to another embodiment. The charged water distribution mechanism 510 includes a water treatment component 512 that generates charged water and a water delivery component 514 that delivers the charged water into the conditioned space 3. Fig. 8A In the illustrated embodiment, the water delivery component 514 includes a mist delivery tube 513 and an array of spray / spray nozzles 515 distributed along the mist delivery tube 513. Figure 8BIn the described embodiment, the water delivery component 516 is centrally located to provide charged water in the conditioned space 3. When the charged water is sprayed or sprayed via the array of spray / spray nozzles 515, an air curtain may be provided to help distribute the charged water. In some cases, the mist delivery tube 513 may have a telescopic structure to allow it to be retractable. In some cases, the mist delivery tube 513 and / or the water delivery component 514 may be tiltable or rotatable within the conditioned space 3. Fig. 8A As shown, the height of the charged water distribution mechanism 510 can be adjusted along the vertical axis of the device 500. It should be understood that the water distribution mechanism can include any fluid flow control mechanism (e.g., inlet, outlet, valve, drain, etc.) that can be used to adjust the pressure, flow, distribution and injection / spraying of the fluid entering the conditioned space 3. In some cases, a fan or other air moving device can be provided to circulate the charged water.

[0071] In some cases, the water treatment component includes a charged water generator and a built-in water storage tank that uses both water shear and field chargers. Figure 8C Schematic diagram of an exemplary water treatment component 512, which includes a charged water generator for generating an aerosol including negative ions from condensate or water. The water treatment component 512 includes a body charging electrolysis unit 51 for a water body electrolysis process, in which a voltage or current is applied to an electrochemical cell via a power supply 53 (e.g., a five-volt power supply), such as from a battery or a solar cell. Condensate or water can be collected in the body charging unit to be generated as an aerosol. A piezoelectric mist generator 55 including two piezoelectric transducers is also provided to the electrochemical cell to generate water mist by vibrating condensate or water. Vibration shears and breaks up the condensate or water that generates an aerosol, and negative ions that can be in the form of ionized water droplets or steam. The aerosol including negative ions can pass through an electric field module 57 to generate super-charged (e.g., body and surface) water droplets 59, such as more negative ions. It should be understood that the water treatment component 512 may include any suitable component or structure that generates a charged water mist to be delivered to the conditioned space. In some cases, water can be provided from a built-in water storage tank of water treatment component 512. In other cases, water can be delivered externally from a water source external to water treatment component 512.

[0072] In various embodiments, the devices described herein include cooling and / or disinfection systems that are configured to address heat and humidity issues within the space they are conditioned. In some cases, the cooling and / or disinfection system includes a radiantly cooled fluid reservoir that provides, for example, a cold fluid that is at least 5°C cooler than the ambient temperature. The fluid reservoir can be in the form of a box whose one or more primary thermal contact surfaces are at least partially made of a thermally conductive material, such as metal, thermally conductive plastic, or other material with high thermal conductivity properties to facilitate heat exchange. In some cases, the cooling and / or disinfection system can be combined with a passive radiantly cooled cover (e.g., Figure 1A , Figure 2B The cover 20) is integrated, and the cover is, for example, about 150W / m 2 In some cases, the cooling and / or disinfection system includes a thermosyphon cooling mechanism integrated with a fluid reservoir and a radiant cooling cover to discharge heat from items (e.g., perishables) within the conditioned space to the exterior space. In some cases, the cooling and / or disinfection system includes forced convection cooling of the air beneath the cover by utilizing a cold fluid. In some cases, the cooling and / or disinfection system can be integrated with the charged water distribution mechanism described herein. For example, the charged water distribution mechanism can generate charged water from the system's passively cooled thermal storage device to reduce weight loss and increase shelf life by controlling microbial growth.

[0073] Fig.9A 6 is a cross-sectional view of an apparatus 600 including a thermal storage tank 610 supported by a leg arrangement 34 for a support 32. The tank 610 is provided to store a cooling fluid 6 to provide a cooling effect to items 4 (e.g., perishables) in thermal contact with the tank 610. The cooling fluid 6 may include water or one or more phase change materials (PCMs) for thermal energy storage. The tank 610 has a bottom surface 612 on which a radiation film 614 is arranged so that the tank 610 can be radiantly cooled.

[0074] During the day, the box 610 is attached to the device 600, wherein its upper surface 616 can be used as a platform 10 to provide a cooling effect to the items 4 placed thereon. Typically, the surface used as a platform surface to hold the goods can have good thermal conductivity to enhance heat exchange. The upper surface 616 of the box 610 may include a thermally conductive material, such as a metal. In some cases, cooling points / areas may be set at selected locations on the upper surface 616, and other areas of the upper surface 616 may be covered with insulating materials to improve cooling efficiency. An insulating layer or material 618 is provided to cover the bottom surface 612 of the box 610. The layer 618 includes an insulating material (e.g., wood, plastic, fabric, foam, glass filling, cardboard, etc.) to prevent convective ambient air heat gain and radiation (e.g., such as Figure 7B Layer 618 may be fixed to device 600, or attached to and removable from box 610. Fig. 9B The box 610 is flipped as shown so that its bottom surface 612 faces the sky to facilitate heat dissipation from the radiant film 614. In some cases, the box 610 can be removed from the device 600 and flipped for radiant re-cooling purposes. In some cases, the box 610 can be rotated to flip upside down without being removed from the device 600. For example, the platform 10 may include a rotating rod supported by its frame, and the box 610 can be at least partially slid out along the rotating rod and then rotated to be placed in a position such as Fig. 9B Flip upside down in the position shown.

[0075] In some cases, the cooling system can have a dual heat storage tank design, wherein the first tank can be used as a roof and the second tank can be used as a platform. The roof tank can be provided with a radiation film facing the sky. The roof tank and the platform tank are fluidly connected via, for example, a connecting pipe. At night, the cooling fluid can be radiatively cooled at the roof tank and via the radiation film on the upper surface of the roof. During the day, the radiatively cooled fluid can be brought back to the platform tank to cool the items on the platform. The flow of cooling fluid between the tanks can be manually operated (e.g., by a hand pump or physical activity). The fluid flow can also be driven by an electric pump.

[0076] Fig. 10A is a cross-sectional view of an apparatus 700 including a dual tank cooling system in a first state. Fig. 10B It includes the second state Fig. 10A 700 of a dual box cooling system. The device 700 includes a platform box 710 and a top cover box 720 in fluid communication with the platform box 710. The radiation film 24 is arranged on the upper surface of the top cover box 720. An insulating layer or material can be provided to cover the bottom surface of the top cover box 720. The insulating layer can include insulating materials (e.g., wood, plastic, fabric, foam, glass filler, cardboard, etc.) to prevent convective ambient air heat gain and radiation from the space below the boxes 710, 720 as indicated by arrows 701. The platform box 710 is supported by the leg assembly 34 and includes an upper surface 712 serving as a platform 10, which is in thermal contact with the supported items 4 (e.g., perishables, such as fruits, leaves, vegetables, etc.). The upper surface 712 may include a thermal interface material (TIM, such as a thermally conductive material, such as metal, thermal paste, thermally conductive tape, etc.) that enhances the cooling of the items 4. When the device 700 is in a position such as Fig. 10A In the open position shown, a cooling fluid 6 (e.g., water or phase change material) is disposed in the platform box 710 to cool the items 4 on the platform 10 and is evacuated from the top cover box to provide air as an insulating barrier. The platform box 710 also includes a bottom surface 714, which may be made of an insulating material (e.g., wood, plastic, fabric, foam, glass filler, cardboard, etc.) to prevent convective ambient air heat gain and radiation from the space below the platform box 710. When the device 700 is in the open position as shown, the cooling fluid 6 (e.g., water or phase change material) is disposed in the platform box 710 to cool the items 4 on the platform 10 and is evacuated from the top cover box to provide air as an insulating barrier. Fig. 10B In the closed position shown, cooling fluid 6 is pumped (e.g., manually or by an electric pump) from the platform tank 710 to the header tank 720 via fluid connection 102. The header tank 720 has a radiant film 24 disposed on its upper surface 722 to provide radiative cooling to the fluid 6 in the header tank 720. The cooled fluid 6 can be manually brought back to the platform tank 710 via fluid connection 104 by gravity. Any suitable fluid flow control mechanism (e.g., inlet, outlet, valve, drain, etc.) can be used to regulate the flow or pressure of the fluid 6.

[0077] In some cases, the cooling system may also include a thermosyphon cooling mechanism. A typical thermosyphon cooling mechanism may include a source portion that delivers heat and a heat sink portion that releases heat. The thermosyphon cooling mechanism is filled with a predetermined amount of a suitable working fluid (e.g., a refrigerant, such as R-134A). The working fluid in the source portion evaporates and travels toward the heat sink portion (e.g., by means of a pressure gradient), where the working fluid condenses, thereby returning to the source portion by means of, for example, gravity.

[0078] In some cases of the present invention, a box with a cooling fluid (e.g., water or a phase change material) may be provided as a platform to support and cool items (e.g., perishables) arranged thereon. The items transfer heat to the cooling fluid in the box. Inside the box, a source portion of a thermosyphon cooling mechanism may be provided. The cooling fluid in the box causes the refrigerant in the source portion of the thermosyphon cooling mechanism to boil, and the refrigerant vapor is transported to the radiator portion of the thermosyphon cooling mechanism. The radiator portion is in thermal contact with a radiant film that provides radiant cooling to condense the refrigerant vapor. The radiator portion and the radiant film may be assembled and serve as a top cover for the device.

[0079] Fig.11A is a cross-sectional view of an apparatus 800 including a thermosyphon cooling mechanism 110 according to one embodiment. The apparatus 800 also includes a platform box 810, which can be connected to Fig. 10A and Fig. 10B The platform box 810 is similar to or different from the platform box 710 of the embodiment of the present invention. The platform box 810 is supported by the leg device 34 and includes an upper surface 812 used as a platform 10, which is in thermal contact with the supported items 4 (e.g., perishables, such as fruits, leaves, vegetables, etc.). The thermosiphon cooling mechanism 110 includes a source portion 112 arranged in the platform box 810 and below the upper surface 812. The cooling fluid 6 in the platform box 810 receives heat from the items 4 on the upper surface 812 and boils the refrigerant in the source portion 112, and the refrigerant vapor is transported to the radiator portion 116 of the thermosiphon cooling mechanism 110 arranged at the top cover 20 via the insulating channel portion 114. The radiation film 24 is arranged on the upper surface 22 of the top cover 20. The box portion 116 also includes a heat insulation layer 118 arranged on the side of the top cover 20 opposite to the radiation film 24. The radiator portion 116 and the radiation film 24 are assembled and serve as the top cover 20. The heat sink portion 116 is in thermal contact with the radiation film 24 to condense the refrigerant vapor. The cooled refrigerant is then returned to the source portion 112 via the thermally insulating channel portion 114 to absorb heat from the heating fluid 6 in the platform box 810. In some cases, a thermal interface material (TIM, such as a thermally conductive material, such as metal, thermal grease, thermally conductive tape, etc.) may be disposed between the radiation film 24 and the heat sink portion 116 to enhance heat exchange therebetween.

[0080] Fig. 11B 1 is a cross-sectional view of a thermosyphon cooling mechanism 160 according to one embodiment. The thermosyphon cooling mechanism 160 is applied to exchange heat with a radiant film / layer 24 that can be included in any device (e.g., a cart) described herein. It should be understood that one or more thermosyphon cooling mechanisms 160 can be applied to a device (e.g., a cart). The thermosyphon cooling mechanism 160 includes one or more source portions 162 at least partially disposed within corresponding thermal reservoirs 163. A controller 161 can control the circulation of a process fluid from one or more thermal reservoirs 163 via a pump 165 and one or more valves 167 to receive heat from a surface / object 64 (e.g., Figure 1A 4 on the platform 10 in the heat exchanger 160). The heated process fluid returns to the corresponding thermal reservoir 163 to heat the working fluid in the corresponding source portion 162. The controller 161 can control the flow of the heated working fluid from each thermal reservoir 163 via the insulating passage portion 114 to the heat sink portion 166 of the thermosiphon cooling mechanism 160 in thermal contact with the radiation film / layer 24 via one or more valves 167. The heat sink portion 166 in thermal contact with the radiation film / layer 24 can cool the working fluid, which returns to the corresponding source portion 162 via the insulating passage portion 114. In some cases, a thermal interface material (TIM, such as a thermally conductive material, such as metal, thermal grease, thermally conductive tape, etc.) may be arranged between the radiation film / layer 24 and the heat sink portion 166 to enhance heat exchange therebetween.

[0081] exist Fig. 11B In the illustrated embodiment, the controller 161 may determine which source portion 162 to operate based on the temperature difference between the source portion and the heat sink portion. Fig. 11B Two source portions 162 are illustrated in FIG. 1 , but it should be understood that other numbers of source portions may be used. It should also be understood that multiple heat sink portions may be used to remove heat from one or more surfaces / objects. The use of a controller and pump may be optional. The thermal reservoir may be the surface / object from which heat is to be removed. The source / heat sink portion of the thermosyphon may be partially or completely enclosed in the thermal reservoir, the extent of which may be controlled.

[0082] In some cases, the cooling system may also include forced convection cooling of air under the roof or cover by utilizing a cold fluid, wherein a thermal energy storage tank is located at the roof to receive the cooling fluid, and an air duct is in thermal contact with the tank to exchange heat. A radiant film is disposed on an upper surface of the tank to provide radiative cooling to the fluid in the tank, and the fluid exchanges heat with air in the air duct. The cooled air may be delivered to a conditioned space under the roof.

[0083] Fig.129 is a side view of an apparatus 900 including a cooling system 910 arranged at a top cover 20. The cooling system 910 includes a thermal energy storage box 912 as a top cover box and a radiation film 24 arranged on the upper surface 22 of the top cover 20. One or more main thermal contact surfaces of the box 912 can be at least partially made of a thermally conductive material, such as metal, thermally conductive plastic, or other material with high thermal conductivity to promote heat exchange. An air duct 914 is arranged on the side of the box 912 opposite to the radiation film 24. Fresh air from the environment is sucked through or blown into the first end 914a of the air duct 914 via a fan 913. The air duct 914 is in thermal contact with the bottom surface of the box 912, wherein heat exchange occurs between the air in the air duct 914 and the radiantly cooled fluid in the box 912. In some cases, a thermal interface material (TIM, such as a thermally conductive material, such as metal, thermal grease, thermally conductive tape, etc.) can be applied to enhance the heat exchange between the box 912 and the air duct 914. Insulation or material (e.g., wood, plastic, fabric, foam, glass filling, cardboard, etc.) may be applied to the bottom surface of the air duct 914 to prevent ambient air heat gain and radiation from convection of the space below the air duct 914. The cooled air is then blown out from the second end 914b of the air duct 914 into the conditioned space to keep the items 4 (e.g., perishables) on the platform 10 cool. The storage box 7 of a fixed or removable type is provided with a locking option on the bottom of the platform 10. In some cases, a fan or other air moving device may be provided to circulate the cooled air and / or deliver the cooled air to a desired location, such as indicated by arrow 901.

[0084] It should be understood that any of the components of the cooling and / or disinfection systems described herein may be combined in any suitable manner. For example, in some cases, the cooling and / or disinfection system may include one or more of a platform box that receives a cooling fluid and holds items on its upper surface, a thermosyphon cooling mechanism, a mechanism for forced convection cooling of the air under the top cover / hood by utilizing a cooling fluid, and an electrified water distribution mechanism, etc.

[0085] Various aspects:

[0086] It should be understood that any one aspect may be combined with one or more other aspects.

[0087] Aspect 1 is a device for providing a conditioned space, the device comprising:

[0088] a top cover positioned to provide shielding for the conditioned space below the top cover; and

[0089] A radiant film is disposed on an upper surface of the top cover and is configured to provide radiant cooling to the conditioned space.

[0090] Aspect 2 is the apparatus of aspect 1, further comprising one or more platforms positioned below the top cover to define a conditioned space.

[0091] Aspect 3 is the apparatus of aspect 1 or 2, further comprising a positioning mechanism configured to move at least one of the top cover and the one or more platforms upward and downward between an open position and a closed position to adjust the height of the conditioned space.

[0092] Aspect 4 is the device of any one of aspects 1 to 3, further comprising a plurality of retractable struts connecting the top cover to the platform.

[0093] Aspect 5 is the device of any one of aspects 1 to 4, further comprising a retractable overhang attached to the top cover.

[0094] Aspect 6 is the device of any one of aspects 2 to 5, wherein one or more platforms further comprise cutouts on a side thereof.

[0095] Aspect 7 is the device of any one of aspects 1 to 6, wherein the top cover further comprises a sealing mechanism over a bottom edge thereof.

[0096] Aspect 8 is the device of Aspect 7, wherein the sealing mechanism comprises a rubber ring.

[0097] Aspect 9 is the device of any one of aspects 1 to 8, wherein the upper surface of the top cover is inclined, optionally comprising a structured surface.

[0098] Aspect 10 is the device of any one of aspects 3 to 8, wherein the positioning mechanism comprises a scissor mechanism.

[0099] Aspect 11 is the apparatus of aspect 10, wherein the scissor mechanism comprises a first support and a second support pivotally connected at a riveted joint in a crisscross “X” pattern.

[0100] Aspect 12 is the apparatus of aspect 10 or 11, wherein the scissor mechanism further comprises a moving mechanism that moves the first end of the first support member, and a mounting block pivotally connected to the second end of the first support member.

[0101] Aspect 13 is the device of Aspect 12, wherein the moving mechanism includes a handle and a lead screw that is rotated by turning the handle.

[0102] Aspect 14 is the device of any one of aspects 10 to 13, wherein the scissor mechanism further comprises a slide member guiding the first end of the second support member, and a mounting block pivotally connected to the second end of the second support member.

[0103] Aspect 15 is the device of any one of aspects 3 to 14, wherein the positioning mechanism further comprises a bellows that closes the positioning mechanism.

[0104] Aspect 16 is the device of any one of aspects 3 to 15, wherein the positioning mechanism comprises a chain and sprocket mechanism.

[0105] Aspect 17 is the device of any one of aspects 1 to 16, further comprising one or more wheels.

[0106] Aspect 18 is the device of any one of aspects 1 to 17, further comprising one or more storage boxes.

[0107] Aspect 19 is the apparatus of any one of aspects 1 to 18, further comprising a charged water distribution mechanism configured to spray or inject the charged water into the conditioned space.

[0108] Aspect 20 is the apparatus of aspect 19, wherein the charged water distribution mechanism further comprises a water treatment component for generating charged water and a water delivery component for delivering charged water, and optionally, the water treatment component further comprises a charged water generator and a built-in water storage tank.

[0109] Aspect 21 is the apparatus of any one of aspects 1 to 20, further comprising a cooling system for providing a cooling fluid.

[0110] Aspect 22 is the apparatus of aspect 21, wherein the cooling system further comprises a rotatable thermal storage tank connected to the platform.

[0111] Aspect 23 is the apparatus of Aspect 22, wherein the rotatable heat storage tank further comprises a second radiation film arranged on the bottom surface thereof.

[0112] Aspect 24 is the apparatus of any one of aspects 21 to 23, wherein the cooling system further comprises a platform box and a roof box in fluid communication with the platform box, and the radiation film is arranged on an upper surface of the roof box.

[0113] Aspect 25 is the apparatus of any one of aspects 21 to 24, wherein the cooling system further comprises a thermosyphon cooling mechanism.

[0114] Aspect 26 is the apparatus of any one of aspects 21 to 25, wherein the cooling system further comprises a thermal energy storage tank connected to the top cover and an air duct in thermal contact with the thermal energy storage tank.

[0115] Aspect 27 is the apparatus of aspect 26, wherein a radiation film is arranged on an upper surface of the thermal energy storage tank to provide radiation cooling to the fluid in the thermal energy storage tank exchanging heat with the air in the air duct.

[0116] Aspect 28 is the apparatus of aspect 26 or 27, wherein the air duct is thermally insulated.

[0117] Aspect 29 is the device of any one of aspects 26 to 28, further comprising a fan configured to draw air through or blow air into the air duct.

[0118] Aspect 30 is the device of any one of aspects 1 to 29, wherein the top cover further comprises a door, and at least a portion of the upper surface is openable together with the door.

[0119] Aspect 31 is the apparatus of any one of Aspects 1 to 30, further comprising a winch mechanism that moves the top cover upward and downward.

[0120] Aspect 32 is the device of any one of Aspects 1 to 31, further comprising a pin locking mechanism for locking the top cover at a predetermined height.

[0121] The terms used in this specification are intended to describe specific embodiments and are not restrictive. Unless otherwise clearly indicated, the terms "a", "an", and "the" also include plural forms. The terms "comprise" and / or "include", when used in this specification, indicate the existence of the stated features, numbers, steps, operations, elements and / or parts, but do not exclude the existence or additional presence of one or more other features, numbers, steps, operations, elements and / or parts.

[0122] With respect to the foregoing description, it should be understood that, without departing from the scope of the invention, changes may be made thereto in detail, particularly in the structural materials employed and the shapes, sizes and arrangements of the components. This specification and the described embodiments are exemplary only, and the actual scope and spirit of the invention are specified by the appended claims.

Claims

1. A device for providing a conditioned space, the device comprising: a top cover positioned to provide shielding for said conditioned space beneath said top cover; and A radiant film is disposed on an upper surface of the roof and is configured to provide radiant cooling to the conditioned space.

2. The apparatus of claim 1 further comprising one or more platforms positioned below the top cover to define the conditioned space.

3. The device according to claim 1 or 2 further includes a positioning mechanism, which is configured to move the top cover and at least one of the one or more platforms upward and downward between an open position and a closed position to adjust the height of the regulated space.

4. The apparatus of any one of claims 1 to 3, further comprising a plurality of retractable struts connecting the canopy to the platform.

5. The device of any one of claims 1 to 4, further comprising a retractable overhang attached to the top cover.

6. The device according to any one of claims 2 to 5, wherein: The one or more platforms also include cutouts on sides thereof.

7. The device according to any one of claims 1 to 6, wherein: The top cover also includes a sealing mechanism over a bottom edge thereof.

8. The device according to claim 7, wherein: The sealing mechanism comprises a rubber ring.

9. The device according to any one of claims 1 to 8, wherein: The upper surface of the top cover is inclined, and optionally, the upper surface comprises a structured surface.

10. The device according to any one of claims 3 to 8, wherein: The positioning mechanism comprises a scissor mechanism.

11. The device according to claim 10, wherein: The scissor mechanism includes first and second supports pivotally connected at a riveted joint in a crisscross "X" pattern.

12. The device according to claim 10 or 11, wherein: The scissor mechanism further includes a moving mechanism that moves the first end of the first support member, and a mounting block pivotally connected to the second end of the first support member.

13. The device according to claim 12, wherein: The moving mechanism includes a handle and a lead screw that rotates by turning the handle.

14. The device according to any one of claims 10 to 13, wherein: The scissor mechanism also includes a slide member guiding the first end of the second support member, and a mounting block pivotally connected to the second end of the second support member.

15. The device according to any one of claims 3 to 14, wherein: The positioning mechanism further comprises a bellows enclosing the positioning mechanism.

16. The device according to any one of claims 3 to 15, wherein: The positioning mechanism comprises a chain and a sprocket mechanism.

17. The device of any one of claims 1 to 16, further comprising one or more wheels.

18. The device of any one of claims 1 to 17, further comprising one or more storage boxes.

19. The apparatus of any one of claims 1 to 18, further comprising an electrically charged water distribution mechanism configured to spray or inject electrically charged water into the conditioned space.

20. The device according to claim 19, wherein The charged water distribution mechanism further comprises a water treatment component for generating the charged water and a water delivery component for delivering the charged water. Optionally, the water treatment component further comprises a charged water generator and a built-in water storage tank.

21. The apparatus of any one of claims 1 to 20, further comprising a cooling system for providing a cooling fluid.

22. The device according to claim 21, wherein The cooling system also includes a rotatable thermal storage tank connected to the platform.

23. The device according to claim 22, wherein: The rotatable heat storage tank further includes a second radiation film arranged on a bottom surface thereof.

24. The device according to any one of claims 21 to 23, wherein: The cooling system further includes a platform box and a roof box in fluid communication with the platform box, and the radiation film is arranged on an upper surface of the roof box.

25. The device according to any one of claims 21 to 24, wherein The cooling system also includes a thermosyphon cooling mechanism.

26. The device according to any one of claims 21 to 25, wherein The cooling system also includes a thermal energy storage tank connected to the roof and an air duct in thermal contact with the thermal energy storage tank.

27. The device according to claim 26, wherein: The radiation film is arranged on an upper surface of the thermal energy storage tank to provide radiation cooling to the fluid in the thermal energy storage tank exchanging heat with the air in the air duct.

28. The device according to claim 26 or 27, wherein The air duct is thermally insulated.

29. The apparatus of any one of claims 26 to 28, further comprising a fan configured to draw air through or blow air into the air duct.

30. The device according to any one of claims 1 to 29, wherein: The top cover further includes a door, and at least a portion of the upper surface is openable together with the door.

31. The apparatus of any one of claims 1 to 30, further comprising a winch mechanism for moving the top cover upward and downward.

32. The device of any one of claims 1 to 31 further comprising a pin locking mechanism for locking the top cover at a predetermined height.

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