CN211260985U - Multifunctional heat pipe type photovoltaic photo-thermal hot water heating system - Google Patents

Abstract

The utility model provides a multifunctional heat pipe type photovoltaic photo-thermal hot water heating system, which comprises a solar photovoltaic power generation system, a straight pipe type heat pipe forced water cooling system, a heat storage water tank, a closed loop heat pipe forced air cooling system, a heating room, a photoelectric accumulator solar storage battery and a solar inverse control all-in-one machine; straight tube type heat pipe forced water cooling system includes straight tube type microchannel heat pipe, microchannel water cooled heat exchanger and water pump, and straight tube type microchannel heat pipe is equipped with evaporating end and condensation end, and closed loop heat pipe forced air cooling system includes closed loop heat pipe evaporimeter, closed loop heat pipe condenser and fan, the utility model has the characteristics of miniaturization, easy and building combination etc, can realize that multi-functional output satisfies the different demands of building according to the illumination characteristics in different seasons.

Description

Multifunctional heat pipe photovoltaic photothermal hot water heating system

technical field

The utility model belongs to the technical field of photovoltaic light and heat, in particular to a multifunctional heat pipe type photovoltaic light heat hot water heating system.

Background technique

With the development of solar energy technology and the decline of the cost of solar energy products, solar energy is more and more popular as a reliable supplementary energy source, such as solar water heating system, distributed photovoltaic power generation system, etc. However, the current system has problems such as single function, low energy conversion efficiency and low heat transfer efficiency in practical application. Therefore, the research and development of photovoltaic and photothermal integrated systems that can achieve multi-function, high conversion efficiency and high utilization rate has become an important research direction to achieve building energy conservation and meet user needs.

At present, the photovoltaic system can use air or water as the heat exchange medium. Due to the low heat capacity and low density of the air, the heat transfer ability is weak, and the combination of the air cooling system and the building is complicated, so the current system mostly adopts the water cooling method. heat exchange. However, most of the water circulation heating is carried out in the form of floor heating. The solar energy has undergone multiple heat exchange processes such as solar modules, hot water storage tanks, floors, and indoor air from the photovoltaic photothermal system to the room. A large amount of heat is lost during the transfer process, and the overall heat transfer process At the same time, the water cooling method is easy to cause the pipeline to freeze in winter, causing the system to fail to operate normally.

The Chinese patent "A Solar Photovoltaic Photothermal System for Energy-Saving Buildings" (CN 201310573559.9) introduces a photovoltaic photothermal system that uses floor heating to provide heat for buildings, "a sweating heat transfer solar photovoltaic photothermal combined window" (CN CN201010224257.7) The photovoltaic photothermal module is combined with the building in the form of windows. These systems all have problems such as single function or low heating and heat transfer efficiency.

Utility model content

Aiming at the problems of single function of the existing photovoltaic photothermal system or difficult operation in winter in severe cold areas, the utility model proposes a heat pipe photovoltaic photothermal hot water heating system which can realize forced air cooling and forced water cooling. The system combines straight-pipe heat pipes with closed-loop heat pipes and photovoltaic photothermal modules to achieve the functions of heating water and heating by means of forced water cooling and forced air heat exchange. In the case of improving heat exchange efficiency, the problems of waterway freezing and low heat transfer efficiency in winter are solved.

For realizing the above-mentioned purpose of the utility model, the technical scheme of the present utility model is as follows:

A multifunctional heat pipe type photovoltaic photothermal hot water heating system, comprising a solar photovoltaic power generation system 1, a straight pipe type heat pipe forced water cooling system 4, a hot water storage tank 8, a closed loop heat pipe forced air cooling system 11, and a heating room 17 , photoelectric storage solar battery 20 and solar inverter integrated machine 21;

The solar photovoltaic power generation system 1 is installed outdoors, and the solar photovoltaic power generation system 1 includes a solar cell array 2 and a solar photovoltaic module substrate 3. The solar cell array 2 is laminated on the front surface of the solar photovoltaic module substrate 3 by hot melt adhesive, and absorbs and Converting solar energy to provide electrical energy and thermal energy for the system, the solar battery 20 is connected to the solar cell array 2, the solar inverter 21 is connected to the solar battery 20, and the solar battery 20 and the solar inverter 21 are combined to store and transmit electricity. to the client 19;

The straight-pipe heat pipe forced water cooling system 4 includes a straight-pipe micro-channel heat pipe 5, a micro-channel water-cooling heat exchanger 6 and a water pump 7, the straight-pipe micro-channel heat pipe 5 is provided with an evaporation end and a condensation end, and the straight-pipe micro-channel heat pipe 5 has an evaporation end. The backside of the solar photovoltaic module substrate 3 is laminated with hot melt adhesive for heat exchange with the solar photovoltaic module substrate 3, and the condensing end of the straight-pipe micro-channel heat pipe 5 is combined with the micro-channel water-cooling heat exchanger 6 by hot-melt adhesive lamination. And conduct heat exchange with the micro-channel water-cooled heat exchanger 6, the straight-tube micro-channel heat pipe 5 is provided with a refrigerant, and the evaporation end of the straight-tube micro-channel heat pipe 5 absorbs the heat of the solar photovoltaic module substrate 3 to form steam through the phase change of the refrigerant in the tube. After the steam rises to the condensing end, it performs forced convection heat exchange with the cold water in the micro-channel water-cooled heat exchanger 6, and the cold water absorbs the heat of the steam into hot water and enters the hot water storage tank 8 to store the heat from the solar photovoltaic module substrate 3. In the hot water storage tank 8, the outlet of the microchannel water-cooled heat exchanger 6 is connected to the inlet of the hot water storage tank 8 through the water pump 7, and the outlet of the hot water storage tank 8 is connected to the inlet of the microchannel water-cooled heat exchanger 6. The hot water in the hot water tank 8 is supplied to the user end 19 through the outlet valve 18 of the user end of the hot water storage tank;

The closed-loop heat pipe forced air cooling system 11 includes a closed-loop heat-pipe evaporator 12, a closed-loop heat-pipe condenser 13 and a fan 14, and the closed-loop heat-pipe evaporator 12 is laminated on the solar energy by hot melt adhesive. The back of the photovoltaic module substrate 3 is in heat exchange with the solar photovoltaic module substrate 3, the closed-loop heat pipe condenser 13 and the fan 14 are fixed together and placed indoors, and the closed-loop heat pipe condenser 13 and the fan 14 are located higher than The solar photovoltaic module substrate 3, the closed loop heat pipe evaporator 12 is provided with a refrigerant, and the closed loop heat pipe evaporator 12 absorbs the heat of the solar photovoltaic module substrate 3 through the phase change of the refrigerant in the tube to form hot steam, and the hot steam enters the closed loop. The loop heat pipe condenser 13 and the fan 14 are installed in the heating room 17 and connected to the end of the hot steam outlet of the condenser 13 .

As a preferred way, the straight-tube micro-channel heat pipe 5, the closed-loop heat-pipe evaporator 12, the closed-loop heat-pipe condenser 13 and the micro-channel water-cooled heat exchanger 6 all use the micro-channel flat tube structure as heat exchangers.

As a preferred way, the straight-pipe micro-channel heat pipes 5 and the closed-loop heat pipe evaporators 12 are alternately arranged on the backside of the solar photovoltaic module substrate 3 to fill the gap between each other's pipes and act as fins.

As a preferred way, the water pump 7 and the hot water storage tank 8 are installed outdoors.

As a preferred way, the outlet of the micro-channel water-cooled heat exchanger 6 is connected to the inlet of the hot-water storage tank 8 through the hot-water storage tank inlet valve 9; the inlet of the heat exchanger 6;

The outlet of the closed loop heat pipe evaporator 12 is connected to the inlet of the closed loop heat pipe condenser 13 through the steam pipe valve 15; the outlet of the closed loop heat pipe condenser 13 is communicated to the closed loop through the liquid return pipe valve 16 The inlet of the heat pipe evaporator 12 .

The use method of the above heating system includes the following steps:

The solar photovoltaic power generation system 1 absorbs light and converts it into electrical energy and heat energy. The solar battery 20 and the solar inverter integrated machine 21 operate in combination to store the electrical energy and transmit it to the user terminal 19; The evaporation end of the combined straight-tube microchannel heat pipe 5, the evaporation end of the straight-tube microchannel heat pipe 5 absorbs the heat of the solar photovoltaic module substrate 3 through the phase change of the refrigerant in the tube to form steam, and the steam rises to the condensation end and exchanges with the microchannel water cooling The cold water in the heater 6 is subjected to forced convection heat exchange, and the cold water absorbs the heat of the steam into hot water and enters the hot water storage tank 8 through the water pump 7, and stores the heat from the solar photovoltaic module substrate 3 in the hot water storage tank 8. The hot water in the hot water tank 8 is supplied to the user end 19 through the outlet valve 18 of the user end of the hot water storage tank;

The closed loop heat pipe evaporator 12 absorbs the heat of the solar photovoltaic module substrate 3 through the phase change of the refrigerant in the tube to form hot steam, and the hot steam enters the closed loop heat pipe condenser 13. The fan 14 is installed in the heating room 17 and connected to the condenser At the end of the hot steam outlet of the condenser 13, the condenser 13 is cooled by the rotation of the fan and the heat is transferred into the heating room 17;

As a preferred method, in the non-heating season, the steam pipe valve 15 and the liquid return pipe valve 16 are closed, the hot water storage tank inlet valve 9 and the hot water storage tank outlet valve 10 are opened, and the hot water storage tank 8 provides hot water to the user end 19 , the fan does not provide warm air to the heating room;

In the heating season, the steam pipe valve 15 and the liquid return pipe valve 16 are opened, the inlet valve 9 of the hot water storage tank and the outlet valve 10 of the hot water storage tank are closed, the hot water storage tank 8 does not provide hot water to the user end 19, and the fan provides heating The wind heats the room.

The technical conception of the system of the present utility model is as follows:

The solar photovoltaic photothermal system is used to provide hot water, electricity and heating for the building, of which the solar photovoltaic power generation system 1 can directly provide electricity for users. At the same time, two different types of heat pipes are combined with the solar photovoltaic module substrate to force water cooling and The function of heating water and heating is realized in the form of forced air cooling. In the non-heating season, the system transmits heat through the straight-pipe heat pipe forced water cooling system 4 and stores it in the hot water storage tank 8; in the heating season, the system transmits heat to the room 17 through the closed-loop heat pipe forced air cooling system 11 , to achieve the purpose of heating. The two systems can be started and stopped through the valve, without affecting each other, and achieve different functions in different seasons.

Compared with the prior art, the beneficial effects of the present utility model are as follows:

1. Two sets of different heat pipe systems used in this utility model conduct heat transfer. Compared with a single-function hot water or heating system, this utility model can realize year-round power supply, provide hot water in non-heating seasons and realize indoor heating in heating seasons. function to realize the diversification of system functions.

2. The heat exchange methods of the two different heat pipe condensing ends in the system are forced convection heat exchange, which has a high heat exchange coefficient and improves the overall photovoltaic photothermal efficiency of the system.

3. The straight-pipe micro-channel heat pipes 5 and the closed-loop heat pipe evaporators 12 are alternately arranged on the back of the solar photovoltaic module substrate 3 to fill the gap between the pipes of the other side and act as fins. This arrangement is reasonably used. At the same time, the heat exchange capacity of the heat pipe is improved.

4. Compared with the traditional straight-tube heat pipe, the heat exchange area of the micro-channel water-cooled heat exchanger 6 and the straight-tube micro-channel heat pipe 5 is adjustable, and its larger heat exchange area is another advantage to improve its heat transfer capacity. .

Description of drawings

1 is a schematic structural diagram of a heat pipe type photovoltaic photothermal hot water heating system that can realize forced air cooling and forced water cooling according to an embodiment of the present invention;

2 is a plan view of a straight-pipe micro-channel heat pipe and a closed-loop heat pipe evaporator alternately juxtaposed to each other according to an embodiment of the present utility model;

3 is a working plan view of a straight-pipe heat pipe of a system provided in a hot water mode according to an embodiment of the present invention;

4 is a working plan view of a closed-loop heat pipe of a system provided in a heating mode according to an embodiment of the present invention;

In the figure, 1 is a solar photovoltaic power generation system, 2 is a solar cell array, 3 is a solar photovoltaic module substrate, 4 is a straight-pipe heat pipe forced water cooling system, 5 is a straight-pipe micro-channel heat pipe, and 6 is a micro-channel water-cooled heat exchanger , 7 is the water pump, 8 is the hot water storage tank, 9 is the inlet valve of the hot water storage tank, 10 is the outlet valve of the hot water storage tank, 11 is the closed loop heat pipe forced air cooling system, and 12 is the closed loop heat pipe evaporation 13 is the closed loop heat pipe condenser, 14 is the fan, 15 is the steam pipe valve, 16 is the liquid return pipe valve, 17 is the heating room, 18 is the outlet valve of the user end of the hot water storage tank, 19 is the user end, 20 is a solar battery, and 21 is a solar inverter integrated machine.

Detailed ways

As shown in FIG. 1, a multifunctional heat pipe type photovoltaic photothermal hot water heating system of the present invention includes a solar photovoltaic power generation system 1, a straight pipe type heat pipe forced water cooling system 4, a hot water storage tank 8, a closed loop The heat pipe forced air cooling system 11, the heating room 17, the photoelectric storage solar battery 20 and the solar inverter integrated machine 21;

The solar photovoltaic power generation system 1 is installed outdoors, and the solar photovoltaic power generation system 1 includes a solar cell array 2 and a solar photovoltaic module substrate 3. The solar cell array 2 is laminated on the front surface of the solar photovoltaic module substrate 3 by hot melt adhesive, and absorbs and Converting solar energy to provide electrical energy and thermal energy for the system, the solar battery 20 is connected to the solar cell array 2, the solar inverter 21 is connected to the solar battery 20, and the solar battery 20 and the solar inverter 21 are combined to store and transmit electricity. to the client 19;

The straight-pipe heat pipe forced water cooling system 4 includes a straight-pipe micro-channel heat pipe 5, a micro-channel water-cooling heat exchanger 6 and a water pump 7, the straight-pipe micro-channel heat pipe 5 is provided with an evaporation end and a condensation end, and the straight-pipe micro-channel heat pipe 5 has an evaporation end. The backside of the solar photovoltaic module substrate 3 is laminated with hot melt adhesive for heat exchange with the solar photovoltaic module substrate 3, and the condensing end of the straight-pipe micro-channel heat pipe 5 is combined with the micro-channel water-cooling heat exchanger 6 by hot-melt adhesive lamination. And conduct heat exchange with the micro-channel water-cooled heat exchanger 6, the straight-tube micro-channel heat pipe 5 is provided with a refrigerant, and the evaporation end of the straight-tube micro-channel heat pipe 5 absorbs the heat of the solar photovoltaic module substrate 3 to form steam through the phase change of the refrigerant in the tube. After the steam rises to the condensing end, it performs forced convection heat exchange with the cold water in the micro-channel water-cooled heat exchanger 6, and the cold water absorbs the heat of the steam into hot water and enters the hot water storage tank 8 to store the heat from the solar photovoltaic module substrate 3. In the hot water storage tank 8, the outlet of the microchannel water-cooled heat exchanger 6 is connected to the inlet of the hot water storage tank 8 through the water pump 7, and the outlet of the hot water storage tank 8 is connected to the inlet of the microchannel water-cooled heat exchanger 6. The hot water in the hot water tank 8 is supplied to the user end 19 through the outlet valve 18 of the user end of the hot water storage tank;

The closed-loop heat pipe forced air cooling system 11 includes a closed-loop heat-pipe evaporator 12, a closed-loop heat-pipe condenser 13 and a fan 14, and the closed-loop heat-pipe evaporator 12 is laminated on the solar energy by hot melt adhesive. The back of the photovoltaic module substrate 3 is in heat exchange with the solar photovoltaic module substrate 3, the closed-loop heat pipe condenser 13 and the fan 14 are fixed together and placed indoors, and the closed-loop heat pipe condenser 13 and the fan 14 are located higher than The solar photovoltaic module substrate 3, the closed loop heat pipe evaporator 12 is provided with a refrigerant, and the closed loop heat pipe evaporator 12 absorbs the heat of the solar photovoltaic module substrate 3 through the phase change of the refrigerant in the tube to form hot steam, and the hot steam enters the closed loop. The loop heat pipe condenser 13 and the fan 14 are installed in the heating room 17 and connected to the end of the hot steam outlet of the condenser 13 .

The straight-tube micro-channel heat pipe 5, the closed-loop heat-pipe evaporator 12, the closed-loop heat-pipe condenser 13, and the micro-channel water-cooled heat exchanger 6 all use the micro-channel flat tube structure as heat exchangers.

The straight-pipe micro-channel heat pipes 5 and the closed-loop heat pipe evaporators 12 are alternately arranged on the backside of the solar photovoltaic module substrate 3 to fill the gaps between the pipes of each other and act as fins.

The water pump 7 and the hot water storage tank 8 are installed outdoors.

The outlet of the microchannel water-cooled heat exchanger 6 is connected to the inlet of the hot water storage tank 8 through the hot water storage tank inlet valve 9; the outlet of the hot water storage tank 8 is connected to the microchannel water-cooled heat exchanger 6 through the hot water storage tank outlet valve 10 entrance;

The outlet of the closed loop heat pipe evaporator 12 is connected to the inlet of the closed loop heat pipe condenser 13 through the steam pipe valve 15; the outlet of the closed loop heat pipe condenser 13 is communicated to the closed loop through the liquid return pipe valve 16 The inlet of the heat pipe evaporator 12 .

The method of using the above system includes the following steps:

The solar photovoltaic power generation system 1 absorbs light and converts it into electrical energy and heat energy. The solar battery 20 and the solar inverter integrated machine 21 operate in combination to store the electrical energy and transmit it to the user terminal 19; The evaporation end of the combined straight-tube microchannel heat pipe 5, the evaporation end of the straight-tube microchannel heat pipe 5 absorbs the heat of the solar photovoltaic module substrate 3 through the phase change of the refrigerant in the tube to form steam, and the steam rises to the condensation end and exchanges with the microchannel water cooling The cold water in the heater 6 is subjected to forced convection heat exchange, and the cold water absorbs the heat of the steam into hot water and enters the hot water storage tank 8 through the water pump 7, and stores the heat from the solar photovoltaic module substrate 3 in the hot water storage tank 8. The hot water in the hot water tank 8 is supplied to the user end 19 through the outlet valve 18 of the user end of the hot water storage tank;

The closed loop heat pipe evaporator 12 absorbs the heat of the solar photovoltaic module substrate 3 through the phase change of the refrigerant in the tube to form hot steam, and the hot steam enters the closed loop heat pipe condenser 13. The fan 14 is installed in the heating room 17 and connected to the condenser At the end of the hot steam outlet of the condenser 13, the condenser 13 is cooled by the rotation of the fan and the heat is transferred into the heating room 17;

In the non-heating season, the steam pipe valve 15 and the liquid return pipe valve 16 are closed, the hot water storage tank inlet valve 9 and the hot water storage tank outlet valve 10 are opened, the hot water storage tank 8 provides hot water to the user end 19, and the fan does not provide Warm air to heat the room;

In the heating season, the steam pipe valve 15 and the liquid return pipe valve 16 are opened, the inlet valve 9 of the hot water storage tank and the outlet valve 10 of the hot water storage tank are closed, the hot water storage tank 8 does not provide hot water to the user end 19, and the fan provides heating The wind heats the room.

The system proposed by the utility model is easy to install, very suitable for combining with buildings, and can realize multi-function output according to the lighting characteristics of different seasons to meet the different needs of users in the building.

The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings, but the present utility model is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive, and are common skills in the art. Under the inspiration of the present utility model, personnel can make many modifications without departing from the purpose of the present utility model and the protection scope of the claims, which all belong to the protection of the present utility model.

Claims (5)

1. A multifunctional heat pipe type photovoltaic photothermal hot water heating system is characterized in that: comprising a solar photovoltaic power generation system (1), a straight pipe type heat pipe forced water cooling system (4), a hot water storage tank (8), a closed type A loop heat pipe forced air cooling system (11), a heating room (17), a photovoltaic storage solar battery (20) and a solar inverter control integrated machine (21); A solar photovoltaic power generation system (1) is installed outdoors, the solar photovoltaic power generation system (1) includes a solar cell array (2) and a solar photovoltaic module substrate (3), and the solar cell array (2) is laminated by hot melt adhesive On the front side of the solar photovoltaic module substrate (3), solar energy is absorbed and converted to provide electrical and thermal energy for the system, the solar battery (20) is connected to the solar cell array (2), and the solar inverter (21) is connected to the solar battery (20) connected, the solar battery (20) and the integrated solar inverter (21) operate in combination to store electric energy and transmit it to the user end (19); The straight-pipe heat pipe forced water cooling system (4) includes a straight-pipe micro-channel heat pipe (5), a micro-channel water-cooling heat exchanger (6) and a water pump (7), and the straight-pipe micro-channel heat pipe (5) is provided with an evaporation end and a condensation end , the evaporating end of the straight-tube microchannel heat pipe (5) is laminated on the back of the solar photovoltaic module substrate (3) by hot melt adhesive for heat exchange with the solar photovoltaic module substrate (3), and the condensation end of the straight-tube microchannel heat pipe (5) It is combined with the microchannel water-cooled heat exchanger (6) by means of hot melt adhesive lamination, and conducts heat exchange with the microchannel water-cooled heat exchanger (6). The evaporating end of the micro-channel heat pipe (5) absorbs the heat of the solar photovoltaic module substrate (3) through the phase change of the refrigerant in the tube to form steam, and the steam rises to the condensing end and is forced with the cold water in the micro-channel water-cooling heat exchanger (6). Convective heat exchange, the cold water absorbs the heat of the steam into hot water and enters the hot water storage tank (8), and stores the heat from the solar photovoltaic module substrate (3) in the hot water storage tank (8), and the micro-channel water-cooled heat exchanger The outlet of (6) is connected to the inlet of the hot water storage tank (8) through the water pump (7), the outlet of the hot water storage tank (8) is connected to the inlet of the microchannel water-cooling heat exchanger (6), and the hot water storage tank ( The hot water in 8) is supplied to the user end (19) through the outlet valve (18) of the user end of the hot water storage tank; The closed-loop heat pipe forced air cooling system (11) includes a closed-loop heat-pipe evaporator (12), a closed-loop heat-pipe condenser (13) and a fan (14), and the closed-loop heat-pipe evaporator (12) 12) Laminate on the back of the solar photovoltaic module substrate (3) by hot melt adhesive and perform heat exchange with the solar photovoltaic module substrate (3), the closed loop heat pipe condenser (13) and the fan (14) are fixed together and juxtaposed Indoors, the position of the closed loop heat pipe condenser (13) and the fan (14) is higher than the solar photovoltaic module substrate (3), the closed loop heat pipe evaporator (12) is provided with a refrigerant, and the closed loop heat pipe The evaporator (12) absorbs the heat of the solar photovoltaic module substrate (3) through the phase change of the refrigerant in the tube to form hot steam, and the hot steam enters the closed-loop heat pipe condenser (13), and the fan (14) is arranged in the heating room (17) Inside and connected to the hot steam outlet end of the condenser (13), the condenser (13) is cooled by the rotation of the fan and the heat is transferred into the heating room (17). 2. The multifunctional heat pipe type photovoltaic photothermal hot water heating system according to claim 1, characterized in that: a straight pipe type micro-channel heat pipe (5), a closed loop heat pipe evaporator (12), a closed loop heat pipe Both the condenser (13) and the microchannel water-cooled heat exchanger (6) use a microchannel flat tube structure as the heat exchanger. 3. The multifunctional heat pipe type photovoltaic photothermal hot water heating system according to claim 1 or 2, wherein the straight pipe type micro-channel heat pipe (5) and the closed loop heat pipe evaporator (12) are alternately arranged side by side. It is arranged on the back of the solar photovoltaic module substrate (3) to fill the gap between the pipes of the opposite side and act as fins. 4. The multifunctional heat-pipe photovoltaic photothermal hot water heating system according to claim 1, wherein the water pump (7) and the hot water storage tank (8) are installed outdoors. 5. The multifunctional heat pipe photovoltaic photothermal hot water heating system according to claim 1, characterized in that: the outlet of the micro-channel water-cooled heat exchanger (6) is connected to the hot water storage tank through the inlet valve (9) of the hot water storage tank the inlet of the tank (8); the outlet of the hot water storage tank (8) is connected to the inlet of the microchannel water-cooled heat exchanger (6) through the outlet valve (10) of the hot water storage tank; The outlet of the closed loop heat pipe evaporator (12) is connected to the inlet of the closed loop heat pipe condenser (13) through the steam pipe valve (15); the outlet of the closed loop heat pipe condenser (13) passes through the liquid return pipe The valve (16) communicates to the inlet of the closed loop heat pipe evaporator (12).

Images