545results about "Fluid circuit connections" patented technology

A solar energy utilization system that enables efficient utilization of solar energy through the synergistic effect of a solar panel and a solar hot water heater. [Solution] The solar energy utilization system comprises a perovskite solar cell unit 12 that converts the light energy of sunlight into electrical energy, and a solar water heater heat collection plate 14 that is arranged below the perovskite solar cell unit 12 and collects heat obtained from the sunlight that has passed through the perovskite solar cell unit 12. The system also comprises a case body 20 for accommodating the perovskite solar cell unit 12 and the solar water heater heat collection plate 14, a tempered glass section 16 that is provided within the case body 20 and on which the perovskite solar cell unit 12 is placed, and a flow passage section 18 that is provided within the case body 20 and in contact with the solar water heater heat collection plate 14, for flowing a fluid to exchange the heat collected by the solar water heater heat collection plate 14.

A concentrated solar power storage system and method convert water into water vapor by the solar thermal energy, and the water vapor further operates a hydroelectric power generation system with a water storage (or an energy storage capsule) through a repeated conversion process.

The invention relates to a concentrated solar energy and terrestrial heat coupling long-time energy storage and control system and method. The system comprises a concentrated solar energy collection system, a heat energy conversion and transmission system, a terrestrial heat long-time energy storage system, a heater module and an energy utilization system. The concentrating solar energy collecting system is used for focusing sunlight and converting the focused solar energy into heat energy; the heat energy conversion and transmission system is used for receiving heat energy from the concentrating solar energy collection system and transmitting the heat energy to the geothermal long-time energy storage system or directly used for power generation; according to the geothermal long-time energy storage system, the natural heat storage characteristic of underground deep rocks is utilized, and heat energy is stored by injecting high-temperature hot fluid; the heater module is used for heating an organic working medium by using heat energy stored by high-temperature hot fluid from a hot well through heat exchanger equipment; the energy utilization system is used for achieving the gradient utilization process of energy. The utilization efficiency of concentrated solar energy and the sustainable utilization rate of geothermal energy are improved. And maximum storage and efficient output of energy are realized.

The invention relates to a molten salt tank and discloses a high-low position integrated molten salt tank which comprises a vertical molten salt storage tank and a low molten salt storage tank which are connected into a whole, the low molten salt storage tank is located on one side of the bottom of the vertical molten salt storage tank, and a molten salt inlet and a breathing opening are formed in the top of the vertical molten salt storage tank; a short shaft pump is mounted at the top of the low-position fused salt storage tank, and an outlet of the short shaft pump is connected with a fused salt conveying pipeline; and a communicating pipe is arranged between the top of the vertical molten salt storage tank and the top of the low-position molten salt storage tank. According to the molten salt tank, the short-shaft pump is used, the vibration problem caused by a long-shaft pump can be avoided, meanwhile, the lowest liquid level of molten salt can be lowered, the dead zone of the molten salt is reduced, the consumption of the molten salt is reduced, and the cost is saved; the molten salt is driven by gravity to flow, the complex and potential unreliable siphoning effect is replaced, system operation does not depend on precise control and external force any more, safety and reliability are achieved, and the situations that flow adjustment is difficult and siphoning fails due to the fact that a siphon pipeline changes along with the liquid level in a tank are avoided.

The invention relates to a molten salt groove type heat collecting device, an operation method of the molten salt groove type heat collecting device and a molten salt groove type photo-thermal power station, and belongs to the field of molten salt groove type photo-thermal power stations. The heat collection mechanism comprises a plurality of heat collectors which are connected in series through pipelines to form a heat collector group, and the two ends of the heat collector group are communicated to the molten salt tank; the heat collector set is arranged in a U shape, a pipeline at the bottom of the U shape is a middle jumper pipe, and the middle jumper pipe is located at the highest position. And a gas outlet of the gas heating mechanism is communicated with the middle jumper pipe. The two ends of the U-shaped heat collector set are communicated with the fused salt tank, the highest position of the heat collector set is communicated with the gas heating mechanism, heating and salt injection can be conveniently conducted on the heat collectors, the automation degree is high, and convenience and rapidness are achieved.

The invention discloses a molten salt groove type heat collecting device which comprises a heat collector rotating along with the sun and a connecting assembly. The heat collector comprises a heat collecting pipe for collecting heat; the connecting assembly comprises a metal hose, a first connecting pipe and a second connecting pipe for communicating one end of the metal hose with the fixed pipeline; and the other end of the metal hose is communicated with the end part of the heat collecting pipe through the first connecting pipe. The overall structure of the device can be simplified, the number of potential leakage points is reduced, and the leakage risk is reduced.

The invention relates to the technical field of photo-thermal power generation, in particular to a fused salt ultra-low liquid level conveying device based on a siphon effect, which comprises a hot fused salt storage tank for storing hot fused salt; the molten salt transition tower is a columnar body and is communicated with the hot molten salt storage tank through a siphon pipeline, the height from a pipeline opening, located in one side of the hot molten salt storage tank, of the siphon pipeline to the bottom of the hot molten salt storage tank is smaller than 0.3 m, the top of the molten salt transition tower is connected with a conveying pump, the conveying pump is connected with a conveying pipe, and the conveying pipe is connected with a conveying pipeline. The inlet of the conveying pipe is lower than the molten salt liquid level of the molten salt transition tower; and the bottom of the molten salt transition tower is at least 1.5 m lower than the bottom of the hot molten salt storage tank. The fused salt ultra-low liquid level conveying device based on the siphon effect can greatly reduce waste of a fused salt dead zone of the hot fused salt storage tank.

The invention discloses an electricity and heat combined supply system based on graded heat storage, a control method and an optimization regulation and control method. The system comprises a photovoltaic heat module which comprises a photovoltaic assembly used for converting solar energy into electric energy and a heat exchange assembly used for collecting heat generated in the working process of the photovoltaic assembly; the heat storage module is used for storing heat collected by the heat exchange assembly by using a first heat storage box when the temperature of a heat exchange medium at the outlet of the heat exchange assembly is not higher than a first set temperature value, and storing heat collected by the heat exchange assembly by using a second heat storage box when the temperature of the heat exchange medium at the outlet of the heat exchange assembly is higher than the first set temperature value; the second heat storage box is further used for supplying heat to the outside. And the heat pump module is used for absorbing heat from the first heat storage box and transferring the absorbed heat into the second heat storage box, so that the second heat storage box stably supplies heat to the outside. During photovoltaic power generation, heat generated in the power generation process is recycled and stored, the solar energy utilization rate is increased, and heat loss in the utilization process is reduced.

To improve heat quantity acquired from a sunlight heat collection panel.SOLUTION: A sunlight heat collecting system 1 includes: a sunlight heat collection panel 2 that has a non-heat insulation part 2c causing convection heat transfer with surrounding air and transfers radiation heat from the sunlight and convection heat from the surrounding air to a heating medium M; a heating medium circulation line 4 for sending the heating medium M from a heating medium tank 3 that stores the heating medium M to the sunlight heat collection panel 2 and sending the heating medium M from the sunlight heat collection panel 2 to the heating medium tank 3; a heating medium flowing control mechanism 5 that performs at least either of switching between permission and prohibition of flowing of the heating medium M along the heating medium circulation line 4 or regulation of a flow rate of the heating medium M; and a control device 9. The control device 9 measures radiation heat input quantity Q1 to the sunlight heat collection panel 2, measures convection heat transfer quantity Q2 between the sunlight heat collection panel 2 and the surrounding air, and controls the heating medium flowing control mechanism 5 on the basis of the radiation heat input quantity Q1 and the convection heat transfer quantity Q2.SELECTED DRAWING: Figure 1

The present invention discloses a device and method for collecting heat bags and solidifying and filling calcareous sand foundation, belonging to the field of civil engineering geological treatment technology. The solar heat collection bag comprises a transparent and permeable part and an insulation material, wherein the insulation material comprises a heat absorbing layer, an insulation layer, and a fabric layer. The heat absorbing layer, insulation layer, and fabric layer are fixedly combined from top to bottom to form an integrated transparent and permeable part. The edge of the transparent and permeable part is the first edge, and the edge of the insulation material is the second edge; The transparent heat permeable part and insulation material are combined into one through the first and second edges, forming a containment space between the transparent heat permeable part and the insulation material, so that the medium contained in the containment space can be heated by solar energy. The device includes a water intake component, a solar collector bag, and a water injection component. This method is implemented based on the device. This device and method can significantly improve the overall strength, liquefaction resistance, and seepage characteristics of calcareous sand foundation, with low cost and high application prospects.

The utility model discloses a waterway sealing structure, which is applied to a solar shower column, and at least comprises a column waterway sealing structure, the structure further comprises an upper column connecting cover which is sleeved at the lower end of an upper column of the solar shower column, and four arc-shaped clamping grooves which extend along the circumferential direction and are uniformly arranged at intervals are arranged in the upper column connecting cover; the arc-shaped clamping groove is provided with an opening part and a locking part; the lower column connecting cover is arranged at the upper end of a lower column of the solar shower column in a sleeving mode, four arc-shaped buckles which extend in the circumferential direction and are evenly arranged at intervals are arranged in the lower column connecting cover, and the sizes of the arc-shaped buckles are matched with the opening parts and the locking parts of the arc-shaped clamping grooves; in the rotating process of the upper column connecting cover relative to the lower column connecting cover, the arc-shaped buckle can slide to the locking part from the opening part, so that locking between the upper column connecting cover and the lower column connecting cover is formed; the middle sealing ring is arranged in a sealing ring placing groove in the lower column connecting cover; when the upper column connecting cover and the lower column connecting cover are locked, the middle sealing ring is extruded and wrapped by the upper column connecting cover and the lower column connecting cover in a two-way mode, and column water path sealing is formed after the upper column and the lower column are connected.

The invention relates to the technical field of photo-thermal power generation, in particular to a tower type photo-thermal fused salt falling energy dissipation and siphon pressure stabilizing device which comprises a fused salt energy dissipation tower, the fused salt energy dissipation tower is a columnar body, the top of the fused salt energy dissipation tower is connected with a fused salt liquid inlet pipeline, and the bottom of the fused salt energy dissipation tower is provided with a fused salt energy dissipation pool; high-temperature fused salt is conveyed to the fused salt energy dissipation pool through a fused salt liquid inlet pipeline; the hot fused salt storage tank is communicated with the fused salt energy dissipation tower through a siphon pipeline, fused salt in the fused salt energy dissipation pool is conveyed to the hot fused salt storage tank through the siphon pipeline, and an outlet, located on one side of the hot fused salt storage tank, of the siphon pipeline is higher than an inlet, located on one side of the fused salt energy dissipation pool, of the siphon pipeline. According to the tower type photo-thermal fused salt falling energy dissipation and siphon pressure stabilizing device, the risks of high-frequency vibration and cavitation erosion are remarkably reduced.

The utility model belongs to the technical field of water heaters, and particularly relates to an intelligent energy-saving control device of an air source heat pump water heater, which comprises at least two groups of air source heat pumps, a solar water heating device, a constant-temperature water tank and a water mixing tank, a first circulating pipeline is arranged between the first group of air source heat pumps and the constant-temperature water tank through a second heat collection circulating pump, and the constant-temperature water tank is used for providing constant-temperature hot water outwards; a second circulating pipeline is arranged between the second group of air source heat pumps and the water mixing tank through the first heat collection circulating pump; a third circulating pipeline is arranged between the solar water heating device and the constant-temperature water tank and between the solar water heating device and the mixed water tank through a third heat collection circulating pump; at least two groups of water level control pipelines and a water supply pump are arranged between the constant-temperature water tank and the water mixing water tank, and the water supply pump is used for providing tap water for the constant-temperature water tank and the water mixing water tank; the energy-saving effect is achieved by reducing the working time of the air source heat pump unit and utilizing free solar energy for heating to the maximum extent.

The invention discloses a molten salt groove type heat collecting device which comprises a heat collector rotating around a rotating shaft along with the sun and a connecting assembly. The heat collector comprises a heat collecting pipe for collecting heat; the heat collecting pipe and the rotating shaft are arranged in parallel at an interval; the connecting assembly comprises a metal hose, a transmission shaft, a first connecting pipe and a rotating joint communicated with the heat transfer medium pipe; the rotating joint is provided with a first end and a second end communicated with the heat transfer medium pipe, the first end and the second end are communicated and relatively rotatably arranged, and the first end is communicated with the first connecting pipe; the first connecting pipe and the rotating shaft coaxially and synchronously rotate through the transmission shaft; one end of the metal hose is communicated with the end part of the heat collecting pipe, and the other end of the metal hose is communicated with the rotary joint through the first connecting pipe. The number of potential leakage points can be reduced, and the leakage risk is reduced.

The invention relates to the technical field of solar energy, and discloses a multifunctional integrated solar heat collection module which comprises a header pipe, the bottom of the header pipe is fixedly connected with a plurality of transparent outer cylinders, the interiors of the transparent outer cylinders are fixedly connected with coating inner cylinders, and the space between the transparent outer cylinders and the coating inner cylinders is vacuumized. And a heat efficiency improving mechanism is arranged in the coating inner cylinder and can conduct heat, fixing frames are fixedly connected to the two sides of the outer portion of the header pipe, adjusting and supporting mechanisms are rotationally connected to the tops of the fixing frames, and the adjusting and supporting mechanisms are used for supporting the header pipe and can adjust the height. According to the integrated solar heat collection module, the support adjusting function of the integrated solar heat collection module can be achieved through cooperation of the adjusting supporting mechanism and the sliding adjusting mechanism, the heat collection capacity is improved, the installation efficiency is improved, angle adjustment can be conducted along with season changes, and therefore the practicability of the integrated solar heat collection module can be improved.

The utility model relates to the technical field of solar heat collection, in particular to a solar heat collection device which comprises a heat collector composed of heat collection pipes, an air heat exchanger communicated with the heat collector through an air guide pipe, a water tank communicated with the air heat exchanger through a water pipe and an auxiliary heater communicated with the water tank. A coil pipe is arranged in the air heat exchanger, a gap for air circulation is formed between the coil pipe and a shell of the air heat exchanger, the water inlet end and the water outlet end of the coil pipe are communicated with the water tank through the water pipe to form a closed loop, and a first circulating pump is arranged on the water pipe; the air guide pipe, the inlet end of the heat collector and the outlet end of the heat collector form a closed loop, and a circulating air pump is arranged on the air guide pipe. Therefore, the solar heat collection device can solve the technical problems of frost damage of a low-temperature pipeline, high heating power consumption and heavy weight of a solar device.

The present invention discloses an inter-seasonal series heat storage solar heating system and method based on the heat shield principle, comprising a solar thermal collection and heating heat storage circuit, an inter-seasonal hot water storage tank heating circuit, a secondary heating circuit and a heat pump auxiliary heating circuit, and realizes inter-seasonal heat storage and winter heating by dynamically switching working modes, and simulates the constructed system with TRNSYS software, verifying the energy-saving advantage of the system compared with the boiler auxiliary heating system; the present invention arranges a high-temperature cylindrical hot water storage tank at the center of the heat storage system in series with a low-temperature concentric annular water tank on the outside, stores the hot water heated by the solar collector with a temperature gradient, and at the same time, the low-temperature annular water tank on the outside acts as a heat shield in space, which can greatly reduce heat storage losses, improve solar energy utilization, and provide a practical engineering technical solution for realizing green heating of buildings in winter.

The invention relates to a spigot with a device for hanging it in a gutter, wherein the spigot forms the uppermost part of at least one pipe. According to the invention, the spigot has at least one lateral opening, that is, an opening formed below the device for hanging it in the gutter, and wherein the opening is large enough to allow one or more cables, hoses, or flexible pipes to pass through it. With this invention, it is possible to route cables, hoses, or flexible pipes, which are used in particular for connecting solar energy generators, discreetly and protected inside pipes.

The utility model provides a solar heat collection device, and belongs to the technical field of heat collection devices. A solar heat collection device comprises a frame body, a solar heat collection device and a solar heat collection device, the copper pipe is fixedly connected to the support, and the two ends of the copper pipe extend out of the frame body; the heat insulation cotton is fixed in the frame body, a containing groove matched with the copper pipe is formed in the heat insulation cotton, and the containing groove penetrates through the heat insulation cotton so that the two sides of the heat insulation cotton can make contact with the copper pipe; the two heat absorption plates are fixed to the two sides of the heat insulation cotton respectively and make contact with the copper pipe; and the two transparent cover plates are fixed on the frame body, and the two transparent cover plates are respectively distributed on the outer sides of the two heat absorbing plates.

The invention relates to a solar heating system (100), characterized in that it comprises: a solar water heater with integrated collector and storage (50, 51), including a water storage tank (50a, 51a) with a cold water inlet (50b, 51b) and a hot water outlet (50c, 51c), and a transparent surface (50d, 51d); a vacuum tube solar collector (40, 41), including a head collector (40a, 41a) with a cold heat transfer fluid inlet (40b, 41b) and a hot heat transfer fluid outlet (40c, 41c), and a plurality of vacuum tubes (40d, 41d), connected to the head collector (40a, 41a), containing a heat transfer fluid. The vacuum tubes (40d, 41d) extend above the transparent surface (50d, 51d), and the solar water heater with integrated collector and storage (50, 51) includes an internal heat exchanger (60, 61). Figure for the abstract: Figure 1

The present invention discloses a hot water storage tank for improving the hot water output rate, which relates to the technical field of hot water storage tanks. It includes a box body, and a floating disk for separating cold water and hot water is arranged inside the box body. The density of hot water, the density of the floating disk, and the density of cold water increase in sequence. By arranging the floating disk inside the box body, the present invention can make the floating disk float between the cold water layer and the hot water layer of tap water, thereby realizing the physical separation of the cold water layer and the hot water layer, reducing the contact area between the cold water layer and the hot water layer, then reducing the agitation of cold water and hot water, reducing the heat dissipation of hot water, slowing down the cooling rate of hot water, achieving the effect of improving the hot water output rate, enabling users to use hotter hot water and facilitating user use.

The utility model discloses a medium-temperature solar heat collection plate core and a medium-temperature heat collector. The plate core comprises a medium header pipe, a heat collecting wing plate is arranged on the side portion of the medium header pipe, heat collecting blue films are arranged on the upper surfaces of the medium header pipe and the heat collecting wing plate, flow dividing holes are formed in the inlet end and the outlet end of the medium header pipe, a flow dividing cavity in the pipe direction is formed in the heat collecting wing plate, and the flow dividing holes in the two ends communicate with the two ends of the flow dividing cavity correspondingly. The medium header pipe is internally provided with a flow blocking structure which is backward relative to the flow dividing holes in the inlet end in the flow direction. The heat collector further comprises the medium-temperature solar heat collection plate core. The solar heat collector has the beneficial effects that medium fluid in the medium header pipe is shunted into the shunting cavity, and a medium in the shunting cavity is in direct contact with the heat collection wing plate, so that the contact area of the medium and the heat collection wing plate is increased; the machining and manufacturing mode is optimized, and the overall manufacturing cost is reduced; the medium header pipe and the heat collection wing plates are coated with heat collection blue films, and the solar photo-thermal conversion efficiency can be effectively improved.

A PVT module having a photovoltaic cell and a thermal absorber includes a thermal absorber having a composite plate structure comprising overlapping plates that are connected to one another by material bond in coupling surfaces. The plates are separated from one another outside the coupling surfaces, wherein channels are formed between the plates outside the coupling surfaces by a forming process on at least one of the plates, wherein the channels form a channel system integrated in the composite plate structure. A method for manufacturing a PVT module and PVT arrangement with at least two PVT modules are further disclosed.

The invention provides a solar heat collection device which comprises a heat collection pipe and a header, the heat release end of the heat collection pipe is inserted into the header, the header comprises a shell and a header pipe arranged in the shell, and a heat preservation material is arranged between the shell and the header pipe; the header pipe is thermally connected with the heat release end of the heat collection pipe through a heat conduction block; the heat conduction block comprises a circular ring structure and a blocky structure which are in thermal connection with each other, the united collecting pipe is inserted into the circular ring structure, a hole is formed in the blocky structure, the heat release end of the heat collecting pipe is inserted into the hole, and the heat release end of the heat collecting pipe is in thermal connection with the united collecting pipe through the circular ring structure and the blocky structure; the heat release ends of the heat collecting pipes are perpendicular to the header pipes. According to the invention, the phenomenon that a heat pipe heat collector in the prior art is easy to scale in a header flow channel is avoided, the scaling phenomenon is weakened, and meanwhile, the pressure drop at the two ends of the header is reduced.

The invention relates to a device (10) for converting solar energy into electrical energy and thermal energy, the device (10) comprising: a main body (12) having an upper side (14) which can be oriented towards the sun, an lower side (18) which can be oriented towards a building (16), and at least one lateral side (20) which is arranged between the upper side (14) and the lower side (18); a photovoltaic module (24) forming the upper side (14) for converting the solar energy into electrical energy; and a heat exchanger (28) having a fluid chamber (44) through which a thermal fluid (46) can flow, the fluid chamber (44) adjoining the photovoltaic module (24).

The utility model discloses a roof solar water heating system which comprises a flat-plate solar collector, an air source heat pump unit, a heat pump heating circulating water pump, a pipeline system and a heat preservation water tank. The flat-plate solar heat collectors are fixed on a roof foundation through a support, the flat-plate solar heat collectors are arranged in multiple rows and are connected in series through heat collector water pipes, and the two ends of each flat-plate solar heat collector are connected to the heat preservation water tank. The air source heat pump unit and the heat pump heating circulating water pump are connected to the heat preservation water tank through a circulating water pipe. The cold water supply pipe supplements cold water to the heat preservation water tank, the hot water supply pipe conveys hot water in the heat preservation water tank to all water consumption ports, and the hot water return pipe recovers unused hot water to the heat preservation water tank. The solar water heater can solve the problems that the water temperature of the solar water heater rises slowly and is unstable, residual hot water cannot be effectively utilized, and energy is wasted due to electric heating in cloudy and rainy days.

The utility model discloses a double-groove framing type photovoltaic and photo-thermal integrated assembly, relates to the technical field of solar energy utilization, and aims to solve the problems of large occupied area, high installation cost, low energy utilization rate and the like due to the fact that an existing photovoltaic assembly and an existing photo-thermal collector are generally independently installed. The photovoltaic panel is installed on the upper portion of the interior of the installation cavity, input ends are arranged at the two ends of the photovoltaic panel, a plurality of first inner cavities are formed in the front side and the rear side of the photovoltaic photo-thermal main body frame, and connecting ends are arranged on one sides of the inner walls of the first inner cavities. The input end extends into the first inner cavity and is fixedly embedded with the connecting end, the heat conducting ends are mounted on one side of the inner wall of the mounting cavity, a heat collecting plate is arranged on the lower portion of the interior of the mounting cavity, and the heat conducting ends are all mounted on one side of the heat collecting plate and penetrate through the heat collecting plate.

The utility model discloses a solar straight-through heat collecting tube, which relates to the technical field of straight-through heat collecting tubes, and comprises a straight-through heat collecting tube and a metal expansion joint, the metal expansion joint is tightly sleeved on the straight-through heat collecting tube, the metal expansion joint is provided with a valve which can be sealed with the straight-through heat collecting tube in a melting way, and the metal expansion joint is tightly sleeved on the straight-through heat collecting tube. The metal expansion joint is provided with a valve part capable of being sealed with the straight-through heat collecting pipe in a fusion mode, the valve part has the linear expansion coefficient similar to that of silicon-boron hard glass, the curie point is high, good low-temperature structure stability is achieved, and the pipe explosion phenomenon caused by direct sealing of the straight-through heat collecting pipe and the metal telescopic corrugated workpiece can be reduced through the valve part.

The utility model belongs to the technical field of solar heat collectors, and discloses a solar heat collector which comprises a heat collection device used for supporting and collecting solar energy for heating and further comprises a transfer device installed on the top of the heat collection device and used for transferring downward-discharged hot water at a constant temperature. A water replenishing device used for storing cold water and sucking and replenishing water under negative pressure is mounted on the rear side of the transfer device; the transfer device comprises a hot water tank, a water outlet pipe is arranged on one side of the bottom of the hot water tank, a connecting frame is arranged on the hot water tank, and a transfer box is arranged on the connecting frame. According to the solar heat collector, due to the arrangement of constant-temperature transfer downward-discharge hot water, the downward-discharge hot water is transferred after the water temperature reaches the set temperature, and the finally output water temperature is kept constant; due to the arrangement of negative pressure suction and water replenishing, automatic water replenishing is achieved; and through the arrangement that water supplementing and transfer drainage are far away from each other, the water temperature reduction speed at the drainage position is slowed down, and the single-time transfer drainage amount is increased.

Disclosed is a cladding panel that collects and / or emits thermal energy, which comprises: a first panel (10); a second panel (20) with an extrados (21) adhered to an intrados (12) of the first panel (10), forming a leak tightseal, with a low-relief channel (40), the channel (40) being attached to the intrados (12) of the first panel (10) to form a conduit; an inlet connector (41) for heat-conducting fluid, connected to a first end of the channel (40); and an outlet connector (42) for heat-conducting fluid, connected to a second end of the channel (40), wherein the first panel (10) is made of calibrated laminated ceramic with a flat, smooth intrados and a flat, smooth extrados and has a uniform thickness of 3-6 mm, and the second panel (20) is made of waterproof heat-insulating plastic that is stable up to 120°C.