A non-insulated floor radiant system and method of conditioning thereof, refrigeration system

Abstract

The application discloses a non-heat-insulated floor radiation system and a refrigerating system and a regulating method thereof. The non-heat-insulated floor radiation system comprises multiple compartments, and further comprises a fresh air unit and a radiation floor arranged in each compartment. The radiation floor is arranged between two adjacent compartments and can be used for refrigerating or heating the compartments on both sides of the radiation floor. The fresh air unit and the radiation floor are connected to the same controller, and the controller can be used for regulating the operation state of the fresh air unit and the radiation floor to regulate the temperature in each compartment. Compared with the prior art, the application adopts the radiation floor and the fresh air unit to be controlled respectively, the radiation floor is mainly used for temperature control, and the fresh air unit is mainly used for humidity control, so that the energy waste is reduced.

Description

Technical Field

[0001] This invention relates to the field of refrigeration, and in particular to a non-insulated floor radiant system and its adjustment method, as well as a refrigeration system. Background Technology

[0002] Radiant floor cooling is limited by condensation, and the refrigerant water temperature cannot be too low, resulting in a small temperature difference between the floor and the room and low heat transfer, which is insufficient to meet the cooling load requirements.

[0003] Furthermore, due to the significant lag in cooling provided by radiant floor heating, conventional PID control (which directly controls the refrigerant flow based on the indoor temperature to adjust the cooling capacity, as radiant floor heating has a lag of several hours, and when the indoor temperature is adjusted according to real-time temperature, it takes several hours to reach the target temperature) cannot be used. Therefore, this adjustment method cannot achieve a good cooling effect and results in refrigerant waste.

[0004] Patent CN115247843A discloses a system that uses a refrigerant-based water system to achieve floor radiant cooling and heating. This system uses real-time floor cooling, and any insufficient cooling capacity is supplemented by a refrigerant system. Two systems are required to meet the cooling needs.

[0005] Patent CN205536663U discloses a method that uses a modular unit with a plate heat exchanger to achieve the function of simultaneously meeting the needs of fresh air and floor cooling. This solution converts low-temperature water into high-temperature water for floor cooling, resulting in a waste of energy and a reduction in the unit's operating energy efficiency.

[0006] Patent CN2641497Y discloses a cooling and heating method that uses pipes laid on both the ceiling and floor radiant surfaces to increase the heat exchange surface, based on indoor load requirements. However, for areas with insufficient indoor radiant load, this solution requires simultaneous radiant heat exchange pipes on both the floor and ceiling, increasing project costs. Furthermore, there are no additional dehumidification devices indoors, and the radiant heat from the floor and ceiling alone cannot eliminate the indoor moisture load.

[0007] Therefore, how to design a non-insulated floor radiant system and its regulation method, as well as a refrigeration system, to optimize the refrigeration effect and avoid energy waste is a technical problem that the industry urgently needs to solve. Summary of the Invention

[0008] In view of the problem that conventional PID control of radiant flooring in the prior art results in poor cooling effect, this invention proposes a non-insulated floor radiant system, its control method, and a cooling system.

[0009] The technical solution of the present invention is to propose a non-insulated floor radiant system, which includes multiple rooms, and also includes a fresh air unit and a radiant floor installed in each of the rooms; The radiant floor is located between two adjacent rooms and can cool or heat the rooms located on both sides of the radiant floor.

[0010] The fresh air handling unit and the radiant floor are connected to the same controller, which can be used to adjust the operating status of the fresh air handling unit and the radiant floor to regulate the temperature in each room.

[0011] Furthermore, each of the radiant floors comprises, from top to bottom, the following layers arranged in sequence: a decorative layer, a concrete layer, plastic clips, underfloor heating pipes, a wire mesh, a cement mortar layer, and a structural layer; The underfloor heating pipes contain refrigerant, which is used to provide heating to both sides of the radiant floor. Cold or heat.

[0012] Furthermore, the controller adjusts the fresh air unit using PID control.

[0013] Furthermore, the controller adjusts the radiant floor using a pilot adjustment method.

[0014] The present invention also proposes an adjustment method for the above-mentioned non-insulated floor radiant system. include: When there is a need for cooling or heating in the room, PID control is used to regulate the fresh air unit; Determine whether the cooling or heating requirements of the current room have been met; If not, then pilot adjustment is used to adjust the radiant floor.

[0015] Furthermore, the fresh air handling unit is adjusted using PID control, including: The indoor temperature Tn and indoor humidity φ of the chamber are detected; Calculate the dew point temperature T1 based on the indoor temperature Tn and the indoor humidity φ. Determine the temperature range between the dew point temperature T1 and the indoor temperature Tn, and adjust the operating status of the fresh air unit according to the temperature range.

[0016] Furthermore, adjusting the operating status of the fresh air handling unit according to the temperature range includes: When the dew point temperature T1 is in the first temperature range and the indoor temperature Tn is in the third temperature range, the opening degree of the fresh air water valve of the fresh air unit is reduced. When the dew point temperature T1 is in the second temperature range and the indoor temperature Tn is in the third temperature range, the opening degree of the fresh air water valve of the fresh air unit is increased. When the indoor temperature Tn is in the fourth temperature range, the opening degree of the fresh air water valve of the fresh air unit is increased.

[0017] Furthermore, the temperature in the first temperature range is lower than the temperature in the second temperature range; The temperature in the third temperature range is lower than the temperature in the fourth temperature range.

[0018] Furthermore, the radiant floor is adjusted using pilot-guided adjustment, including: The outdoor temperature Tw of the room is detected, and the preset water supply temperature Tg is calculated based on the outdoor temperature Tw. Adjust the temperature of the refrigerant in the underfloor heating pipes of the radiant floor to the preset water supply temperature Tg; Determine whether the preset water supply temperature Tg is greater than the threshold temperature Tmax; If so, the water pump connected to the underfloor heating pipe will be frequency reduced.

[0019] The present invention also proposes a cooling system having the above-mentioned non-insulated floor radiant system.

[0020] Compared with the prior art, the present invention has at least the following beneficial effects: This invention eliminates the insulation layer and reflective film from the original radiant floor system, enabling the underfloor heating pipes to exchange heat on both sides. It is positioned between two chambers, serving as both a floor for heat exchange between the upper chamber and a ceiling for heat exchange between the lower chamber. Only one set of radiant floor heating pipes is needed, reducing the capacity of the terminal configuration and saving costs. This invention uses radiant floor and fresh air unit for separate control, where the radiant floor is mainly used for temperature control and the fresh air unit is mainly used for humidity control, which can reduce energy waste. This invention changes the sensible heat and cooling capacity that the original fresh air handling unit had to bear to the floor, resulting in higher temperatures and higher unit energy efficiency during cooling. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the non-insulated floor radiant system proposed in this invention; Figure 2 This is a schematic diagram of the structure of a radiant floor in a traditional design. Figure 3 This is a schematic diagram of the structure of the radiant floor in this invention; Figure 4 This is a flowchart illustrating the adjustment process of the radiant floor in this invention. Figure 5 This is a flowchart illustrating the adjustment process of the fresh air handling unit when the dew point temperature is within the first temperature range in this invention. Figure 6 This is a flowchart illustrating the adjustment process of the fresh air handling unit when the dew point temperature is in the second temperature range in this invention. Detailed Implementation

[0023] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0024] Therefore, a feature pointed out in this specification is used to describe one feature of one embodiment of the invention, and does not imply that every embodiment of the invention must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0025] The principles and structure of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0026] Cooling or refrigeration solutions for radiant flooring have the following problems: Radiant floor cooling exhibits significant lag, making conventional PID control unsuitable. Consequently, radiant floor cooling or heating is not effective, resulting in refrigerant waste. Radiant floor cooling is limited by condensation, which prevents the refrigerant temperature in the underfloor heating pipes from getting too low. This results in a small temperature difference between the refrigerant and the room, leading to low heat transfer and insufficient cooling load.

[0027] To address the above problems, this invention proposes a non-insulated floor radiant system, which includes multiple rooms, and a fresh air unit and a radiant floor installed in each room; The radiant floor is installed between two adjacent rooms and can cool or heat the rooms located on both sides of the radiant floor. The fresh air handling unit and the radiant floor are connected to the same controller, which can be used to adjust the operating status of the fresh air handling unit and the radiant floor to regulate the temperature in each room, thereby meeting the user's cooling or heating needs.

[0028] Specific settings, such as Figure 1 As shown, the non-insulated floor radiant system proposed in this invention includes room 1, room 2, a fresh air unit, a radiant floor, and a controller; It can be seen that both room 1 and room 2 are equipped with radiant floors and fresh air units, and the radiant floors and fresh air units are connected to the same controller to control the temperature and humidity in the room.

[0029] Meanwhile, a radiant floor is installed at the adjacent position of compartment 1 and compartment 2. This radiant floor can cool or heat in both directions. Therefore, it can serve as the bottom plate of compartment 1 to provide cooling or heating to compartment 1, and at the same time serve as the top plate of compartment 2 to provide cooling or heating to compartment 2, thereby improving the heat exchange capacity of the refrigerant terminal.

[0030] It should be noted that the above appendix Figure 1 In the embodiment with only two rooms, in other embodiments of the present invention, multiple rooms are provided. After adopting this design scheme, it can be ensured that each room has heat exchange with the floor and the ceiling, which can greatly improve the heat exchange effect of each room.

[0031] Therefore, in response to the above-mentioned problem 1, the present invention connects the fresh air handling unit and the radiant floor to the same controller for separate control. The radiant floor is mainly used for temperature control, and the fresh air handling unit is mainly used for humidity control. Since the fresh air handling unit has high convective heat transfer efficiency during adjustment, it can quickly respond to indoor cooling or heating needs. Therefore, by using separate control of the fresh air handling unit and the radiant floor, the problem of large lag of the radiant floor can be solved. To address problem 2 above, this invention improves the structure of the radiant floor, enabling it to simultaneously cool or heat the rooms on both sides, thereby increasing the terminal heat exchange capacity and solving the problem of low refrigerant heat transfer.

[0032] Please see Figure 2 In traditional solutions, the structure of a radiant floor includes, from top to bottom, the following layers: decorative layer, concrete layer, plastic clips, underfloor heating pipes, wire mesh, reflective film, thermal insulation layer, cement mortar layer, and structural layer. Please see Figure 3 In the proposed solution of this invention, the structure of the radiant floor includes, from top to bottom, the following layers arranged in sequence: a decorative layer, a concrete layer, plastic clips, underfloor heating pipes, a wire mesh, a cement mortar layer, and a structural layer. The underfloor heating pipes contain refrigerant, which is used to provide cooling or heating to both sides of the radiant floor.

[0033] As can be seen, by removing the reflective film and thermal insulation layer of the radiant floor, the radiant floor of the upper building can serve as both a floor for heat transfer to the upper building and a ceiling for heat transfer to the lower building. This achieves the effect of having two radiant surfaces with only one underfloor heating pipe, increasing the radiant cooling capacity per unit area from over 30 watts to over 70 watts, which is higher than the sensible heat load required by the terminal.

[0034] Taking a typical building with a population density of 0.3 people / square meter as an example, the sensible heat load (excluding the fresh air handling unit) is 100w / m2. The fresh air volume is calculated at 30m3 / h / person, the fresh air index is 9m3 / h / m2, and the moisture load is 32.7g / h. To eliminate the excess moisture load, the fresh air handling unit needs to treat it to (14.7℃, 9.96g / kg, 93%). The sensible heat index that the fresh air handling unit can eliminate is 33.9w / m2. The remaining 100-33.9=66.1w / m2 is treated by the radiant floor.

[0035] According to the technical specifications for radiant floor heating and cooling, the cooling capacity of radiant floor heating is Q1 = Qf + Qd. Calculations show that when the radiant floor temperature is 21℃ and the indoor temperature is 26℃, the total cooling capacity of the radiant floor heating is 32.6 W / m², which is lower than 66.1 W / m². However, if ceiling radiant cooling is added, the cooling capacity provided by the ceiling radiant cooling system is Q2 = 43.6 W / m², bringing the total cooling capacity to 76.2 W / m², which is higher than the required 66.1 W / m², thus meeting the indoor sensible heat load demand. The cooling capacity can be controlled according to the indoor temperature, either by reducing the refrigerant flow rate or increasing the refrigerant temperature. In winter, similar to conventional radiant floor heating, the main unit automatically adjusts the refrigerant flow rate based on the refrigerant temperature difference, and each radiant terminal controls the opening of the floor heating water valve based on indoor temperature feedback to ensure heating needs are met.

[0036] In other words, compared with the existing technology, the present invention eliminates the insulation layer and reflective film on the basis of the original radiant floor, which enables the floor heating pipe to achieve heat exchange on both sides. It is set between two chambers, and can act as a floor to exchange heat for the upper chamber, or as a ceiling to exchange heat for the lower chamber. Only one set of radiant floor heating pipes is needed, which reduces the terminal configuration capacity and saves costs.

[0037] Furthermore, in this invention, the controller adjusts the fresh air unit using PID control.

[0038] The fresh air handling unit is a convection system, which has a relatively fast response speed. After adjusting the opening of the fresh air and water valve of the fresh air handling unit, it can provide feedback to the room in a short time. Therefore, by using PID control for the fresh air handling unit, this invention can quickly respond to the temperature and humidity requirements in the room.

[0039] Furthermore, in this invention, the controller adjusts the radiant floor using a pilot adjustment method.

[0040] The pilot regulation involves establishing a functional relationship between outdoor temperature and water supply temperature, Tw=f(Tg). When the outdoor temperature Tw is detected, the corresponding preset water supply temperature Tg is calculated according to the formula and adjusted accordingly. Furthermore, time verification is performed based on the maintenance delay time and the radiant floor's delay time to ensure that the radiant floor's adjustment matches the load delay, thus achieving pilot regulation. This system can also incorporate a self-learning function, analyzing past control data and actual temperature change patterns to adjust and correct the functional relationship, making it more closely reflect the actual engineering results.

[0041] The control concept of this invention lies in superimposing two regulation methods: radiant flooring is mainly used for temperature control, and the fresh air unit is mainly used for humidity control, which can reduce energy waste. In particular, the fresh air unit can control instantaneous heat gain caused by glass radiation, instantaneous load changes caused by internal heat load variations, and load differences between floors. Because the fresh air unit is a convection system, its control response is fast, which can compensate for the slow response of radiant flooring, achieving rapid response and ensuring real-time room temperature and humidity.

[0042] Based on the above-mentioned radiant floor setup, this invention proposes a method for adjusting the radiant floor system using the aforementioned non-insulated floor system, comprising: When there is a need for cooling or heating in the room, PID control is used to regulate the fresh air unit; Determine whether the current cooling or heating demand in the room has been met; If not, then pilot adjustment is used to adjust the radiant floor.

[0043] Because the cooling water temperature must be higher than the indoor dew point temperature T1 (i.e., the supply water temperature must be controlled above 16℃ and the return water temperature below 21℃), the adjustable range of the water temperature is relatively small. Simply using temperature compensation results in limited adjustment in summer. Therefore, this invention employs a temperature compensation combined with flow control. Here, the PID control of the fresh air handling unit is for temperature compensation adjustment, and the pilot control of the radiant floor is for flow control adjustment.

[0044] When the outdoor temperature Tw changes, temperature compensation is used first. Water temperature is adjusted according to the indoor temperature Tn to change the overall system's supply water temperature. Flow regulation is only used when temperature compensation has been adjusted to its maximum. For example, if the load is low based on the outdoor temperature Tw, and the required outlet water temperature is 20℃ (which is already quite high), further temperature adjustment will have little impact on radiation. In this case, flow regulation can be used to reduce the flow rate for floor radiant heating, saving pump operating energy.

[0045] Please see Figure 5 and Figure 6The present invention employs PID control to regulate the fresh air handling unit, including: The indoor temperature Tn and indoor humidity φ of the testing room were measured. Calculate the dew point temperature T1 based on the indoor temperature Tn and the indoor humidity φ. Determine the temperature range between the dew point temperature T1 and the indoor temperature Tn, and adjust the operating status of the fresh air handling unit according to the temperature range.

[0046] The calculation model for dew point temperature T1 is based on the Magnus-Tetens approximation method, and its specific calculation model is as follows: T1=[ b*Ύ(Tn,φ)] / [ a-Ύ(Tn,φ)]; And Ύ(Tn,φ)=a*Tn / (b+Tn)+In(φ / 100); Here, Tn is the indoor temperature, φ is the indoor humidity, T1 is the dew point temperature, Ln represents the natural logarithm, and a and b are constants, a=17.27 and b=237.7.

[0047] Adjusting the operating status of the fresh air handling unit according to the temperature range includes: When the dew point temperature T1 is in the first temperature range and the indoor temperature Tn is in the third temperature range, the opening of the fresh air water valve of the fresh air handling unit is reduced. When the dew point temperature T1 is in the second temperature range and the indoor temperature Tn is in the third temperature range, the opening degree of the fresh air water valve of the fresh air handling unit is increased. When the indoor temperature Tn is in the fourth temperature range, the opening degree of the fresh air water valve of the fresh air handling unit is increased.

[0048] The temperature in the first temperature range is lower than the temperature in the second temperature range; The temperature in the third temperature range is lower than the temperature in the fourth temperature range.

[0049] In this invention, the indoor temperature Tn and indoor humidity φ are detected by a fresh air handling unit, and the dew point temperature T1 is calculated. This temperature is then compared with the temperature range set for the radiant floor. Based on the set temperature range, the cooling capacity of the fresh air handling unit is adjusted to control the indoor humidity φ, ensuring that the radiant floor temperature is always higher than the dew point temperature T1 + deviation value ΔT1, thus preventing condensation on the floor. While controlling the indoor humidity φ, the indoor temperature Tn is also monitored. If either Tn exceeds the range, the cooling capacity is further increased to ensure that the indoor temperature Tn and indoor humidity φ remain within the comfort zone.

[0050] Based on the above effects, the first temperature range and the second temperature range are set based on the temperature of the radiant floor, which is used to ensure that the temperature of the radiant floor is always higher than the dew point temperature T1 + deviation value △T, so as to prevent condensation on the ground.

[0051] Specifically, the first temperature range is less than the radiant floor temperature Td-△T1, and the second temperature range is greater than the radiant floor temperature Td+△T1.

[0052] The third and fourth temperature ranges are set based on the set temperature Ts. They are used to ensure that the adjustment effect of the fresh air handling unit is within its deviation value △T2, thus ensuring the cooling effect of the fresh air handling unit.

[0053] Specifically, the third temperature range is less than the set temperature Ts-△T2, and the fourth temperature range is greater than the set temperature Ts+△T2.

[0054] Please see Figure 4 In this invention, pilot adjustment is used to regulate the radiant floor, including: The outdoor temperature Tw of the detection room is measured, and the preset water supply temperature Tg is calculated based on the outdoor temperature Tw. Adjust the temperature of the refrigerant in the underfloor heating pipes of the radiant floor to the preset water supply temperature Tg; Determine whether the preset water supply temperature Tg is greater than the threshold temperature Tmax; If so, the frequency of the water pump connected to the underfloor heating pipe should be reduced.

[0055] The solution first adjusts the refrigerant temperature. Only when the temperature adjustment is insufficient to meet the demand will it switch to flow regulation. Therefore, it first adjusts the temperature of the refrigerant in the underfloor heating pipes in the radiant floor to the preset supply water temperature Tg. If the supply water temperature Tg is greater than the threshold temperature Tmax, and the demand is still not met, then flow regulation will be performed to reduce the frequency of the water pump connected to the underfloor heating pipes.

[0056] The above adjustment methods are mainly for summer. For winter adjustment, since the heating load is smaller and more stable in winter, the heat from the radiant floor can fully meet the indoor load demand. There is no need to consider condensation issues indoors. The fresh air unit only needs to control the heating supply according to the indoor temperature Tn. The radiant floor can be the same as a conventional heating system, using an indoor temperature detection device to detect the indoor temperature Tn and control the flow rate of the floor heating pipes, thereby controlling the indoor temperature Tn.

[0057] Since the fresh air system is an all-air system, involving multiple rooms sharing a single system, the indoor temperature (Tn) feedback can only be controlled from a specific typical room. This invention can select areas with high load proportions and low load fluctuations, such as large offices, for monitoring and feedback based on functional zoning. Compared to intermittently used areas like conference rooms and the general manager's office, large offices have more stable loads. Furthermore, it is recommended to install fresh air units by layer and orientation. The eastern region (east, northeast, southeast) is more affected by morning solar radiation, while the western region (west, northwest, southwest) is more affected by afternoon solar radiation. Therefore, dividing the region into two fresh air units, one in the east and one in the west, results in more consistent overall load changes and higher accuracy of all-air conditioning.

[0058] This invention is a system based on human settlement environment research, which can also be used in fields such as aquaculture and planting to achieve energy-saving and cost-reducing operation effects through two-sided radiation.

[0059] The present invention also proposes a cooling system having the above-mentioned non-insulated floor radiant system.

[0060] Compared with the prior art, the present invention has at least the following beneficial effects: 1. Based on the original radiant floor, the present invention eliminates the setting of the insulation layer and reflective film, which enables the floor heating pipe to achieve heat exchange on both sides. It is set between two chambers, and can act as a floor to exchange heat for the upper chamber, or as a ceiling to exchange heat for the lower chamber. Only one set of radiant floor heating pipes is needed, which reduces the terminal configuration capacity and saves costs. 2. This invention uses radiant floor and fresh air unit for separate control, where the radiant floor is mainly used for temperature control and the fresh air unit is mainly used for humidity control, which can reduce energy waste; 3. This invention changes the sensible heat and cooling capacity that the original fresh air handling unit had to bear to the floor, resulting in higher temperature and higher unit energy efficiency during cooling.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for adjusting a non-insulated floor radiant system, characterized in that, The non-insulated floor radiant system includes multiple rooms, and also includes a fresh air unit and a radiant floor installed in each of the rooms; The radiant floor is located between two adjacent rooms and can cool or heat the rooms located on both sides of the radiant floor respectively. The fresh air handling unit and the radiant floor are connected to the same controller, which can be used to adjust the operating status of the fresh air handling unit and the radiant floor to regulate the temperature in each room; The adjustment method for the non-insulated floor radiant system includes: When there is a need for cooling or heating in the room, PID control is used to regulate the fresh air unit; Determine whether the cooling or heating requirements of the current room have been met; If not, then a pilot adjustment is used to adjust the radiant floor; The fresh air handling unit is regulated using PID control, including: The indoor temperature Tn and indoor humidity φ of the chamber are detected; Calculate the dew point temperature T1 based on the indoor temperature Tn and the indoor humidity φ. Determine the temperature range between the dew point temperature T1 and the indoor temperature Tn, and adjust the operating status of the fresh air unit according to the temperature range; Adjusting the operating status of the fresh air handling unit according to the temperature range includes: When the dew point temperature T1 is in the first temperature range and the indoor temperature Tn is in the third temperature range, the opening degree of the fresh air water valve of the fresh air unit is reduced. When the dew point temperature T1 is in the second temperature range and the indoor temperature Tn is in the third temperature range, the opening degree of the fresh air water valve of the fresh air unit is increased. When the indoor temperature Tn is in the fourth temperature range, the opening degree of the fresh air water valve of the fresh air unit is increased.

2. The adjustment method for the non-insulated floor radiant system according to claim 1, characterized in that, Each of the radiant floors comprises, from top to bottom, the following layers: a decorative layer, a concrete layer, plastic clips, underfloor heating pipes, a wire mesh, a cement mortar layer, and a structural layer. The underfloor heating pipes contain refrigerant, which is used to provide cooling or heating to both sides of the radiant floor.

3. The adjustment method for the non-insulated floor radiant system according to claim 1, characterized in that, The controller adjusts the fresh air unit using PID control.

4. The adjustment method for the non-insulated floor radiant system according to claim 1, characterized in that, The controller adjusts the radiant floor using a pilot adjustment method.

5. The adjustment method for the non-insulated floor radiant system according to claim 1, characterized in that, The temperature in the first temperature range is lower than the temperature in the second temperature range; The temperature in the third temperature range is lower than the temperature in the fourth temperature range.

6. The adjustment method for the non-insulated floor radiant system according to claim 1, characterized in that, The radiant floor is adjusted using pilot conditioning, including: The outdoor temperature Tw of the room is detected, and the preset water supply temperature Tg is calculated based on the outdoor temperature Tw. Adjust the temperature of the refrigerant in the underfloor heating pipes of the radiant floor to the preset water supply temperature Tg; Determine whether the preset water supply temperature Tg is greater than the threshold temperature Tmax; If so, the water pump connected to the underfloor heating pipe will be frequency reduced.

7. A refrigeration system, characterized in that, The refrigeration system employs the adjustment method of the non-insulated floor radiant system as described in any one of claims 1 to 6.

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