Air conditioner cold supply system based on radiation refrigeration and heat pipes
By introducing radiant cooling and heat pipe technology into the air conditioning system, utilizing radiant coatings to enhance heat exchange efficiency, and optimizing equipment operation through monitoring devices, the problems of low efficiency and high operating costs of air conditioning systems in high-temperature environments have been solved, achieving a highly efficient and energy-saving cooling effect.
Patent Information
- Application Number
- CN202422613888.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-10-29
AI Technical Summary
Existing air conditioning systems have low heat exchange efficiency in high-temperature environments, resulting in insufficient cooling capacity and high operating costs. High system operating costs also exist during transitional seasons or when operating at low loads.
An air conditioning cooling system based on radiative cooling and heat pipes is adopted. The radiative coating on the surface coating of heat pipe heat exchangers and air-cooled chillers enhances heat exchange efficiency. The equipment operation mode is controlled by a monitoring device to achieve independent natural cooling of heat pipes or pre-cooling of upstream series cooling.
Improving cooling efficiency in high-temperature environments reduces operating costs, saves energy during transitional seasons and low-load periods, and enhances the economic efficiency of system operation.
Smart Images
Figure CN223663444U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a radiation refrigeration technical field especially relates to a kind of air conditioning cooling system based on radiation refrigeration and heat pipe. BACKGROUND
[0002] The refrigerant temperature inside the air-cooled heat exchanger is higher than the outdoor air temperature. In summer, indirect sensible heat exchange is carried out through the heat exchanger, and the heat exchange efficiency is affected by the outdoor temperature.
[0003] Under the condition of high outdoor temperature, the cooling capacity requirement increases, and the air-side heat exchange efficiency decreases, which may cause insufficient cooling capacity and high system operation cost. In the transition season or when the cooling load is small, starting a single water chiller may cause small load operation, which also has the problem of high system operation cost.
[0004] Therefore, an air conditioning cooling system based on radiation refrigeration and heat pipe is proposed to solve the above problems. UTILITY MODEL CONTENTS
[0005] To make up for the above shortcomings, the utility model provides an air conditioning cooling system based on radiation refrigeration and heat pipe, aiming to improve the problem of low heat exchange efficiency and poor system operation economy caused by the influence of outdoor temperature on the heat exchange efficiency of the air-side heat exchanger in the prior art.
[0006] To achieve the above purpose, the utility model adopts the following technical scheme: an air conditioning cooling system based on radiation refrigeration and heat pipe, comprising an end device, a water treatment auxiliary facility group is fixedly connected to the left side of the end device, a circulating water pump one is fixedly connected to the left side of the water treatment auxiliary facility group, a switching valve one is fixedly connected to the left side of the water treatment auxiliary facility group, a circulating water pump two is fixedly connected to the left side of the switching valve one, a heat pipe heat exchanger is fixedly connected to the left side of the circulating water pump one, an air-cooled water chiller is fixedly connected to the left side of the circulating water pump two, a switching valve two is fixedly connected to the right side of the heat pipe heat exchanger, a switching valve three is fixedly connected to the right side of the heat pipe heat exchanger, the switching valve two is fixedly connected to the right side of the air-cooled water chiller, and the switching valve three is fixedly connected to the right side of the air-cooled water chiller. Cold water return water pipe or cold water supply pipe is fixedly connected between each device.
[0007] Further description of the above technical scheme:
[0008] The heat pipe heat exchanger comprises a fan, a condensation section, an adiabatic section, an evaporation section, a return water end one and a water supply end one.
[0009] Further description of the above technical scheme:
[0010] The air-cooled chiller comprises a wind side condensing heat exchanger, a return water end two and a water supply end two, and the surface of the wind side condensing heat exchanger is coated with radiation paint.
[0011] As a further description of the above technical solution:
[0012] The condensing section comprises a condensing section tube shell and fins, and the outer surface of the condensing section is coated with radiation paint.
[0013] As a further description of the above technical solution:
[0014] The outer side of the heat pipe heat exchanger is provided with a fan, and the fan is used for strengthening the convective heat exchange and cooling of the finned condensing section of the heat pipe heat exchanger.
[0015] As a further description of the above technical solution:
[0016] The left side of the circulating water pump one is connected with a return water end one of the heat pipe heat exchanger, and the left side of the circulating water pump two is connected with a return water end two of the air-cooled chiller.
[0017] As a further description of the above technical solution:
[0018] The circulating water pump one and the circulating water pump two are variable frequency water pumps.
[0019] As a further description of the above technical solution:
[0020] The switching valves one, two and three are electrically-operated on-off valves.
[0021] As a further description of the above technical solution:
[0022] The top of the terminal device is provided with a monitoring device, which monitors the point data of the equipment accessories of the fan, the air-cooled chiller, the water treatment auxiliary facility group, the circulating water pump one and the circulating water pump two, the switching valves one, two and three, the cold water return water pipeline and the cold water supply pipeline, and performs overall system control according to the monitoring data.
[0023] The utility model has the advantages of the following beneficial effects:
[0024] In the utility model, the condensing section of the heat pipe heat exchanger and the surface of the wind side heat exchanger of the air-cooled chiller are coated with radiation paint, the radiation paint can realize high infrared emission capacity of atmospheric transmission window 8-13 mu m and high reflectivity outside 8-13 mu m, and further improve the condensing heat dissipation.
[0025] In the transition season and low load, only the heat pipe heat exchanger and the corresponding circulating water pump are started, natural cooling is realized, the cooling demand of the terminal device is met, and the system operation cost is reduced.
[0026] At high temperature, the cold water return water is pre-cooled by the heat pipe heat exchanger first, and then enters the air-cooled chiller for temperature reduction, so as to reduce the pressure ratio between the evaporator and the condenser, improve the refrigeration efficiency, and reduce the system operation cost. BRIEF DESCRIPTION OF DRAWINGS
[0027] Figure 1 A system schematic diagram of the air conditioning cooling system based on radiation refrigeration and heat pipe is provided in the utility model;
[0028] Figure 2 For Figure 1 The heat pipe alone natural cooling process schematic diagram;
[0029] Figure 3 For Figure 1 The heat pipe pre-cooling upstream series cooling process schematic diagram;
[0030] Figure 4 For Figure 1 The heat pipe radiation refrigeration condensing section longitudinal section view.
[0031] Legend:
[0032] 1, end device; 2, heat pipe heat exchanger; 21, condensing section; 22, adiabatic section; 23, evaporating section; 24, return water end one; 25, water supply end one; 211, condensing section pipe shell; 212, fin; 213, radiation coating; 3, fan; 4, air-cooled chiller; 41, air side condensing heat exchanger; 42, return water end two; 43, water supply end two; 5, monitoring device; 6, water treatment auxiliary facility group; 7, circulating water pump one; 8, circulating water pump two; 9, switching valve one; 10, switching valve two; 11, switching valve three; 12, cold water return water pipeline; 13, cold water supply pipeline. DETAILED DESCRIPTION
[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0034] Referring to Figure 1 , Figure 2 , Figure 3The utility model provides an embodiment: a kind of air conditioning cooling system based on radiation refrigeration and heat pipe, including terminal equipment 1, heat pipe heat exchanger 2, fan 3, air-cooled chiller 4, monitoring device 5, water treatment auxiliary facilities group 6, circulating water pump 7 and 8, switching valve 9~11, cold water return pipeline 12, cold water supply pipeline 13.Cold water return pipeline 12 and cold water supply pipeline 13 are fixedly connected in the left side of terminal equipment 1, circulating water pump one 7 and circulating water pump two 8 are set on cold water return pipeline 12, circulating water pump 7 starts and stops with heat pipe heat exchanger 2, circulating water pump 8 starts and stops with air-cooled chiller 4.Fan 3 is located in the condensation section 21 side of heat pipe heat exchanger 2, starts and stops with heat pipe heat exchanger 2, strengthens condensation section 21 periphery air flow.Switching valve 9 is located on cold water return pipeline 12, switching valve two 10, switching valve three 11 left side connect the water supply end one 25 of heat pipe heat exchanger 2, the right side of switching valve two 10 is fixedly connected cold water supply pipeline 13, the right side of switching valve 11 is fixedly connected cold water return pipeline 12, control switching valve changes water flow direction, realizes different cooling combination form.Water treatment auxiliary facilities group 6 is located on cold water return pipeline 12, by removing suspended solids and particulate matter in fluid, reduce the wear and tear inside system, prolong the service life of equipment, and improve the operating efficiency of entire system;Through constant pressure facility, system pressure is maintained stable, avoid water system not empty air intake.Monitoring device 5 collects each point data, according to outdoor condition and load demand, through monitoring device 5 centralized regulation each equipment and valve, to realize heat pipe alone natural cooling and heat pipe precooling upstream series cooling condition operation.
[0035] Specifically, in transition season and low load, switching valve two 10 is opened, switching valve one 9 and switching valve three 11 are closed, and cold water return is entered into heat pipe heat exchanger 2 by terminal equipment 1 through cold water return pipeline 12, and then is sent into terminal equipment 1 through cold water supply pipeline 13, to realize heat pipe alone natural cooling.
[0036] Specifically, in high temperature, switching valve three 11 is opened, switching valve one 9 and switching valve two 10 are closed, and cold water return is pre-cooled by heat pipe heat exchanger 2 first, and then is entered into air-cooled chiller 4 for cooling by terminal equipment 1 through cold water return pipeline 12, and then is sent into terminal equipment 1 through cold water supply pipeline 13, to realize heat pipe precooling upstream series cooling.
[0037] Refer to Figure 4 The condensation section 21 side of heat pipe heat exchanger 2 is equipped with fin 212, the heat exchange area is increased, and radiation paint 213 is coated on the surface of fin 212 and condensation section pipe shell 211, to enhance the radiation heat exchange between surface and outer space.
[0038] Working principle: The heat pipe heat exchanger 2 is a heat transfer element with extremely high heat conduction performance, the heat pipe evaporating section 23 absorbs the heat of the cold water return water, so that the working medium in the heat pipe heat exchanger 2 evaporates and flows to the condensing section 21 side to dissipate heat, and the condensed and liquefied working medium flows back to the evaporating section 23 by capillary action to form a working medium circulation, the heat dissipation of the heat pipe heat exchanger 2 is completely self-cooling, which can save energy consumption and operation cost. In the actual environment, in addition to the radiation heat dissipation to the outer space, there are various heat exchanges with the surrounding environment. The radiation coating 213 has high emissivity in the 8-13 μm wave band and high reflectivity outside the 8-13 μm wave band, and the radiation coating 213 is coated on the surface of the condensing section 21, which indirectly exchanges heat with the working medium in the condensing section 21 through the tube shell 211, and then the working medium heat is directly dissipated to the outer space, so that the heat exchange of the condensing section 21 with the surrounding objects is much lower than that with the outer space, thereby realizing passive refrigeration. At the same time, the radiation coating 213 is coated on the surface of the air-cooled condensing heat exchanger 41 of the air-cooled chiller 4, and the radiation heat exchange is strengthened.
[0039] Finally, it should be pointed out that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the protection scope of the present application.
Claims
1. An air conditioning cooling system based on radiant cooling and heat pipes, comprising terminal equipment (1), characterized in that: The left side of the terminal device (1) is fixedly connected to a water treatment auxiliary facility group (6), the left side of the water treatment auxiliary facility group (6) is fixedly connected to a circulating water pump one (7), the left side of the water treatment auxiliary facility group (6) is fixedly connected to a switching valve one (9), the left side of the switching valve one (9) is fixedly connected to a circulating water pump two (8), the left side of the circulating water pump one (7) is fixedly connected to a heat pipe heat exchanger (2), the left side of the circulating water pump two (8) is fixedly connected to an air-cooled chiller unit (4), the right side of the heat pipe heat exchanger (2) is fixedly connected to a switching valve two (10), the right side of the heat pipe heat exchanger (2) is fixedly connected to a switching valve three (11), the right side of the air-cooled chiller unit (4) is fixedly connected to a switching valve two (10), the right side of the air-cooled chiller unit (4) is fixedly connected to a switching valve three (11), and each device is fixedly connected to a cold water return pipe (12) or a cold water supply pipe (13).
2. An air conditioning cooling system based on radiant cooling and heat pipes according to claim 1, characterized in that: The heat pipe heat exchanger (2) includes a fan (3), a condensing section (21), an adiabatic section (22), an evaporating section (23), a return water end (24), and a supply water end (25).
3. An air conditioning cooling system based on radiant cooling and heat pipes according to claim 1, characterized in that: The air-cooled chiller unit (4) includes an air-side condenser heat exchanger (41), a return water end two (42), and a supply water end two (43). The surface of the air-side condenser heat exchanger (41) is coated with a radiation coating (213).
4. An air conditioning cooling system based on radiant cooling and heat pipes according to claim 2, characterized in that: The condensation section (21) includes a condensation section shell (211) and fins (212), and the outer surface of the condensation section (21) is coated with a radiation coating (213).
5. An air conditioning cooling system based on radiant cooling and heat pipes according to claim 2, characterized in that: A fan (3) is provided on the outside of the heat pipe heat exchanger (2), and the fan (3) is used to enhance the convective heat transfer and cooling of the condensing section (21) with fins (212) of the heat pipe heat exchanger (2).
6. An air conditioning cooling system based on radiant cooling and heat pipes according to claim 1, characterized in that: The left side of the circulating water pump 1 (7) is connected to the return water end 1 (24) of the heat pipe heat exchanger (2), and the left side of the circulating water pump 2 (8) is connected to the return water end 2 (42) of the air-cooled chiller unit (4).
7. An air conditioning cooling system based on radiant cooling and heat pipes according to claim 1, characterized in that: The circulating water pump one (7) and the circulating water pump two (8) are variable frequency pumps.
8. An air conditioning cooling system based on radiant cooling and heat pipes according to claim 1, characterized in that: The switching valves 1 (9), 2 (10) and 3 (11) are electrically operated switching valves.
9. An air conditioning cooling system based on radiant cooling and heat pipes according to claim 1, characterized in that: The terminal equipment (1) is equipped with a monitoring device (5) on its top. The monitoring device (5) monitors the location data of the equipment accessories of the fan (3), air-cooled chiller (4), water treatment auxiliary facilities group (6), circulating water pump one (7) and circulating water pump two (8), switching valve one (9), switching valve two (10) and switching valve three (11), cold water return pipe (12) and cold water supply pipe (13), and performs overall system regulation based on the monitoring data.