CN102937304A - Heat-pipe heating system by utilizing solar energy - Google Patents

Abstract

A heat pipe heating system using solar energy, characterized in that the system includes: a solar collector plate (1) is connected to a hot water storage tank (2) through an upper circulation pipe (3) and a lower circulation pipe (4), and the hot water storage The tank (2) has a built-in phase change heat storage block (12), and the water pump (7) is connected to the coil (5) in the heat storage tank (2) and the heat preservation heat exchange box (10 ), one end of the heat pipe (8) is inserted into the thermal insulation heat exchange box (10), and the other end has fins (9).

Description

A heat pipe heating system utilizing solar energy

technical field

The invention relates to a heat pipe heating system utilizing solar energy.

Background technique

my country's Tibet and northwest Sichuan have high altitude, strong solar radiation, large temperature difference between day and night, and harsh living conditions. Residents in these areas mainly use biomass energy such as crop stalks, animal dung, and firewood for heating for heating. The consumption of a large amount of biomass energy affects the survival of forest and grass vegetation. At the same time, due to the short growth period of plants, low grass yield, and overgrazing, the vegetation is seriously degraded and the ecological environment is worrying. There are many nomadic dwellings in Tibet and northwest Sichuan. Due to the scattered people in nomadic areas, most of them live in tents. The current situation of living by aquatic plants determines that they cannot use central heating systems.

Residents in Tibet and northwest Sichuan still rely on biomass energy for heating. The burning method is not conducive to returning straw to the field to improve the soil and animal husbandry. It consumes a lot of energy, which not only wastes resources but also pollutes the environment. These untreated solid fuels, such as firewood, charcoal, straw, and livestock dung, produce hundreds of chemical compounds when they are inefficient or incompletely burned, many of which are greenhouse gases that contribute to global climate change or pollutants harmful to human health.

my country's Tibet and Northwest Sichuan are areas rich in solar energy resources in my country. In view of the cold climate, difficult fuel supply and migration status in this area, solar energy, a natural energy source, should be fully utilized to heat the interior and improve the indoor temperature environment. For the winter heating status of residents, nomads, scattered outposts, military depots and detachment residential barracks in Tibet and northwest Sichuan, improving the use of solar energy in buildings is a very important way to save energy.

At present, more studies are conducted on the use of passive solar houses for winter heating, which is one of the important forms of solar thermal utilization in Tibet and Northwest Sichuan. Due to the poor heat storage performance of the envelope structure, the passive solar house still cannot provide heating during the whole night at night. The invention intends to use solar energy to store heat in the phase change material during the day, absorb the heat of the phase change material for heating at night, and use the heat pipe heating technology for indoor heating.

During the day, solar heat is stored in phase change materials. The application of phase change materials increases the heat storage and greatly reduces the volume of the heat storage tank, which is convenient for transportation and migration. The phase change material releases heat at night, and through the secondary heat exchange, the heat is transferred to the room by the heat pipe. Because the heat pipe has high-speed heat conduction effect, light weight and simple structure, large heat transfer capacity, no active components, and no heat transfer direction restrictions , durability, long life, easy storage and other advantages, therefore, the evaporation end of the heat pipe is inserted into the water exchange tank, and the heat release at the condensation end increases the indoor temperature to achieve the purpose of heating. Therefore, this system is suitable for places where solar energy is abundant, the heating area is small, and needs to be moved at any time, such as nomadic tent heating, residential heating, camp heating, etc.

Contents of the invention

Aiming at the meteorological characteristics of relatively abundant solar energy and relatively cold nights in the alpine regions of Tibet and northwest Sichuan in my country, as well as the characteristics of nomadic tent heating, resident heating and camp heating, the present invention provides a heat pipe heating system suitable for utilizing solar energy in Tibet and northwest Sichuan .

The basic idea of the invention is: the solar heat collector stores the heat collected during the day in the hot water storage tank, and the phase change heat storage block in the hot water storage tank stores the collected heat. At night, turn on the water pump, and the thermal insulation circulating hot water pipe connected to the hot water storage tank and the thermal insulation heat exchange box will send the heat in the thermal storage tank to the indoor thermal insulation heat exchange tank. The condensing end with fins in the indoor air uses natural convection to continuously dissipate heat into the room, increasing the indoor temperature and achieving the purpose of heating.

The technical solution adopted in the present invention is: a heat pipe heating system utilizing solar energy, which is characterized in that the system includes: The heat storage block is changed, and the water pump is connected to the coil in the hot water storage tank and the coil in the heat preservation heat exchange box through the thermal insulation circulating hot water pipe. One end of the heat pipe is inserted into the thermal insulation heat exchange box, and the other end has fins. Solar thermal collectors can be trough, flat and dish collectors. The heat pipe can be a gravity heat pipe, a capillary heat pipe, or a pulse heat pipe. The heat pipes are arranged in parallel, the condensing end is inserted into the thermal insulation heat exchange box, and the evaporating end is exposed in the air to dissipate heat. The end of the heat pipe exposed in the air has fins, and the connection mode between the fins and the heat pipe is integral processing or expansion pipe socket. The coil in the hot water storage tank is a serpentine coil. The coils in the thermal insulation heat exchange box are serpentine coils.

A further solution is: if the system is applied in an area without power supply, the solar power storage device can be used to provide electricity for the water pump.

The invention has the advantages that: the heat pipe heating system using solar energy comprehensively utilizes solar heat collection technology, phase change heat storage technology and heat pipe technology, and the reasonable system form makes the heating system have the advantages of compact structure and convenient transportation and management. Installing phase-change heat storage blocks in the solar heat storage tank not only greatly increases the heat storage capacity per unit volume of the heat storage tank, but also effectively reduces the volume of the heat storage tank, which facilitates nomadic transportation of the heating system and saves manpower and material resources. Broaden the beneficiaries. At the same time, because the heat transfer start temperature of the heat pipe is low, almost all the heat collected by the solar collector plate can be effectively used, and the thermal efficiency is high. The application of phase change heat storage block and heat pipe technology makes the heat collected by solar energy not only meet the heating heat required at night, but also meet the heating for a longer period of time. The heating system can not only be applied to the heating of tents of nomads, but also can meet the heating needs of residents and camps.

The equipment of the system is divided into two parts: outdoor and indoor. The solar collector plate and heat storage tank belong to the outdoor equipment, and the thermal insulation heat exchange box and heat pipe belong to the indoor part. The heating system can be disassembled into two parts only by disconnecting the thermal insulation circulating hot water pipe. Equally, after these two parts are placed in the suitable position, connect the thermal insulation circulating hot water pipe to replenish a small amount of necessary circulating water and the assembly is completed. On-site assembly and disassembly are easy to operate. After the heating system equipment is disassembled into two parts, it is very convenient to transport. The operation and management are simple, turn on the water pump when heating is needed at night, and turn off the water pump when heating is not needed. The above-mentioned advantages make the heating system practical and popular, and it is a livelihood project.

Description of drawings: This specification includes the following two drawings: Figure 1 is a diagram of a heat pipe heating system utilizing solar energy. Fig. 2 is a top view of the heat preservation and heat exchange box cover. In the figure: 1. heat collector, 2. hot water storage tank, 3. upper circulation pipe, 4. lower circulation pipe, 5. coil pipe, 6. thermal insulation circulating hot water pipe, 7. water pump, 8. heat pipe, 9 , fins, 10, thermal insulation heat exchange box, 11, coil pipe, 12, phase change heat storage block, 13, heat pipe jack, 14. thermal insulation heat exchange box cover.

The specific embodiment: below in conjunction with accompanying drawing, the present invention is further described: Fig. 1, Fig. 2, a kind of heat pipe heating system that utilizes solar energy, it is characterized in that this system comprises: solar heat collector plate 1 passes upper circulation pipe 3 and The lower circulation pipe 4 is connected to the hot water storage tank 2, the hot water storage tank 2 has a built-in phase change heat storage block 12, and the water pump 7 is connected to the coil 5 in the hot water storage tank 2 and the thermal insulation heat exchange pipe 6 through the thermal insulation circulating hot water pipe 6. Coil pipe 11 in the box 10, one end of heat pipe 8 is inserted in the thermal insulation heat exchange box 10, and the other end has fin 9, and solar heat collecting plate 1 can be trough type, flat plate and disc heat collecting plate. The heat pipe 8 can be a gravity heat pipe, a capillary heat pipe, or a pulsating heat pipe. The heat pipes 8 are arranged in parallel. The connection mode between the sheet and the heat pipe is overall processing or expansion tube socketing. The coil 5 placed in the hot water storage tank 2 is a serpentine coil, and the coil 11 placed in the thermal insulation and heat exchange tank 10 is a serpentine coil.

During the day, the solar collector stores the collected heat in the hot water storage tank, and the phase-change heat storage block in the hot water storage tank gradually stores a large amount of heat as the solar collector heat collection process prolongs. At night, turn on the water pump, and the thermal insulation circulating hot water pipe connected to the hot water storage tank and the thermal insulation heat exchange box will send the heat in the thermal storage tank to the indoor thermal insulation heat exchange tank. The condensing end with fins in the indoor air continuously dissipates heat into the room to increase the indoor temperature and achieve the purpose of heating.

For disassembly and assembly, the equipment of the system can be divided into two parts: outdoor and indoor. The solar collector plate and heat storage tank belong to the outdoor equipment, and the thermal insulation heat exchange box and heat pipe belong to the indoor part. The heating system can be disassembled into two parts only by disconnecting the thermal insulation circulating hot water pipe. Equally, after these two parts are placed in the suitable position, connect the thermal insulation circulating hot water pipe to replenish a small amount of necessary circulating water and the assembly is completed. On-site assembly and disassembly are easy to operate. The operation and management are simple, turn on the water pump when heating is needed at night, and turn off the water pump when heating is not needed.

When the heating system is used in areas without electricity supply, the solar power storage device can be used to provide electricity for water pumps.

Claims (6)

1. A heat pipe heating system using solar energy, characterized in that the system includes: the solar collector plate (1) is connected to the hot water storage tank (2) through the upper circulation pipe (3) and the lower circulation pipe (4), and the storage The hot water tank (2) has a built-in phase change heat storage block (12), and the water pump (7) is connected to the coil (5) in the hot water storage tank (2) and the heat preservation heat exchange box through the thermal insulation circulating hot water pipe (6) In the coil (11) in (10), one end of the heat pipe (8) is inserted into the thermal insulation heat exchange box (10), and the other end is provided with fins (9). 2. The heat pipe heating system utilizing solar energy according to claim 1, characterized in that the solar heat collector plate (1) can be a trough type, a flat plate or a dish type heat collector plate. 3. The heat pipe heating system using solar energy according to claim 1, characterized in that the heat pipe (8) can be a gravity heat pipe, a capillary heat pipe, or a pulse heat pipe. 4. The heat pipe heating system using solar energy according to claim 1, characterized in that the heat pipes (8) are arranged in parallel, the condensing end is inserted into the thermal insulation heat exchange box (10), and the evaporating end is exposed in the air to dissipate heat. 5. The heat pipe heating system using solar energy according to claim 1, characterized in that the end of the heat pipe (8) exposed in the air is provided with fins (9), and the fins and heat pipes are connected by integral processing or expansion sleeves catch. 6. The heat pipe heating system using solar energy according to claim 1, characterized in that the coil (5) placed in the hot water storage tank (2) is a serpentine coil. The coiled pipe (11) placed in the thermal insulation heat exchange box (10) is a serpentine coiled pipe.

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