CN101319808A - A solar semiconductor water-cooled air-conditioning system using soil for heat exchange - Google Patents

Abstract

A solar semiconductor water-cooled air-conditioning system that uses soil for heat exchange. The air-conditioning system can cool/heat small indoor spaces to provide the comfortable temperature required by the human body. The system contains solar photoelectric converters, controllers, storage batteries, semiconductor water-cooled air conditioners and soil heat exchangers. The semiconductor water-cooled air conditioner includes a fan, water inlet and outlet pipes, a water cooling tank, a fin radiator and a semiconductor thermopile. Solar cells are used to provide direct current, and the heat generated by the semiconductor thermopile during cooling or the cold generated during heating is taken away by circulating water. The soil heat exchanger provides circulating water at the hot end/cold end of semiconductor cooling/heating; the air conditioning system has high working efficiency and can be used for cooling/ Heating, the temperature of the indoor air conditioner in summer is between 16 and 26°C, and the temperature of the indoor air conditioner in winter is adjustable between 15 and 24°C.

Description

A solar semiconductor water-cooled air-conditioning system using soil for heat exchange

technical field

The invention relates to an air-conditioning system, which converts solar energy into electric energy and uses a semiconductor thermopile to perform refrigeration/heating, and the generated heat/cooling capacity is taken away by circulating water at a constant temperature provided by a soil heat exchanger to achieve indoor temperature A solar semiconductor water-cooled air-conditioning system that uses soil for heat exchange to maintain human comfort belongs to the technical field of solar refrigeration and heating, and also belongs to the technical field of new energy or renewable energy.

Background technique

With the continuous increase of primary energy consumption and the increasing scarcity of fossil energy, the development of new energy and renewable energy has been paid more and more attention. In the late 1990s, the use of CFCs was banned globally. Against the background of the urgency of energy saving and environmental protection, the penetration and promotion of new materials and other related technologies provided new development opportunities and impetus for thermoelectric air conditioners. Thermoelectric air conditioners can effectively control the temperature of the regulated room to meet the cooling and heating requirements of the room, and without compressors and refrigerants, they are easy to control, reliable in operation, and can be flexibly configured according to load conditions. They are completely green and environmentally friendly air conditioners. Chinese utility model patent CN200961920 discloses a thermoelectric air conditioning unit and a thermoelectric air conditioner with the thermoelectric air conditioning unit. EER of the unit's thermoelectric air conditioner. Chinese utility model patent CN2478007 discloses a solar air conditioner, which uses a semiconductor refrigerator for refrigeration, uses solar photovoltaic panels to supply power to semiconductor refrigeration blocks, and also uses circulating water to dissipate heat. In actual use, due to the high heat flux density of the thermoelectric unit, The circulating water heats up quickly, which reduces the efficiency after a long working time. Chinese invention patent CN1587868A discloses a solar semiconductor air-conditioning system, which has a simpler structure than water cooling, but lower efficiency.

Contents of the invention

The purpose of the present invention is to provide a solar semiconductor water-cooled air-conditioning system that utilizes soil for heat exchange. The temperature is between 16-26°C, and the indoor air-conditioning temperature can be adjusted between 15-24°C in winter.

Technical scheme of the present invention is as follows:

A solar semiconductor water-cooled air-conditioning system using soil for heat exchange, comprising a solar photoelectric converter 1, a controller 4, a storage battery 5, and a semiconductor water-cooled air conditioner 3. The semiconductor water-cooled air conditioner includes a fan, a water-cooled tank 12, a semiconductor water-cooled Air conditioner water inlet pipe 6, semiconductor water-cooled air conditioner outlet pipe 7, fin radiator 10 and semiconductor thermopile 15, semiconductor water-cooled air conditioner water inlet pipe and semiconductor water-cooled air conditioner outlet pipe are respectively connected with the inlet 13 of the water-cooled tank and the outlet of the water-cooled tank 14 connected, it is characterized in that: the solar semiconductor water-cooled air-conditioning system also includes a soil heat exchanger 8 and a circulating water pump 9 arranged underground, the water inlet of the soil heat exchanger is connected with the outlet pipe of the semiconductor water-cooled air conditioner, and the soil heat exchange The water outlet of the device is connected to the water inlet pipe of the semiconductor water-cooled air conditioner, and the circulating water pump is arranged on the water inlet pipe of the semiconductor water-cooled air conditioner or the water outlet pipe of the semiconductor water-cooled air conditioner; The water flowing out of the end passes through the soil heat exchanger for heat exchange, and is lifted by the water pump into the water cooling tank, where it is heated/cooled by the semiconductor in the water cooling tank and then enters the soil heat exchanger for circulation.

The technical feature of the present invention is also that: the water-cooling tank 12, the fin radiator and the semiconductor thermopile are arranged in two rows, and arranged symmetrically, and the water-cooling tank 12, the semiconductor thermopile 15 and the fin Radiator 10; the hot end of the semiconductor thermopile during cooling or the cold end during heating is in contact with the water cooling tank, the cold end during cooling or the hot end during heating is in contact with the fin radiator, and the contact surface is coated with thermal conductive silicone grease , the gap between the fin radiator and the water cooling tank is filled with thermal insulation cotton 11 .

Compared with the prior art, the present invention has the following advantages and prominent effects: the semiconductor water-cooled air-conditioning system using soil for heat exchange provided by the present invention is energy-saving, environment-friendly and easy to maintain. Powered by solar energy, no external power supply is required, especially suitable for outdoor use without grid. Under cooling conditions, when the outdoor temperature is about 35°C, the indoor temperature can be stabilized at about 20°C, and the refrigeration coefficient is 3.6; under heating conditions, when the outdoor temperature is about 3°C, the indoor temperature can be stabilized at At 32°C, the heating coefficient is 4.5. The connection mode of the semiconductor thermopile is convenient to change, so as to adapt to the electric power that solar energy can provide and different cooling and heating demands. The effect of cooling and heating is good, and the circulating water provided by the soil heat exchanger is close to constant temperature as the heat-absorbing or heat-releasing medium, which has a larger thermal conductivity and specific heat than air.

Description of drawings

Figure 1 is a schematic diagram of a semiconductor water-cooled air-conditioning system using soil for heat exchange.

Fig. 2 is a structural schematic diagram of the semiconductor water-cooled air conditioner in the system of the present invention.

Fig. 3 is a half-sectional view of the water cooling tank in the air conditioner of the present invention.

In the figure: 1-solar photoelectric converter; 2-cooling/heating space; 3-semiconductor water-cooled air conditioner; 4-controller; 5-battery; 6-semiconductor water-cooled air conditioner inlet pipe; Water pipe; 8-soil heat exchanger; 9-circulating water pump; 10-fin radiator; 11-insulation cotton; 12-water cooling tank; 13-inlet of water cooling tank; 14-outlet of water cooling tank; 15-semiconductor Thermopile; 16-wire; 17-water-cooling tank runner.

Detailed ways

The principle, working process and specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is a schematic diagram of the system of the present invention, comprising a solar photoelectric converter 1, a controller 4, a storage battery 5, a semiconductor water-cooled air conditioner 3, a semiconductor water-cooled air conditioner inlet pipe 6, a semiconductor water-cooled air conditioner outlet pipe 7, and the soil that is arranged on the ground Heat exchanger 8 and circulating water pump 9. The water inlet of the soil heat exchanger is connected to the outlet pipe of the semiconductor water-cooled air conditioner, and the water outlet of the soil heat exchanger is connected to the water inlet pipe of the semiconductor water-cooled air conditioner; the circulating water pump is set on the water inlet pipe of the semiconductor water-cooled air conditioner or the outlet pipe of the semiconductor water-cooled air conditioner ;The water flowing out from the hot end of the semiconductor thermopile during cooling/cold end during heating passes through the soil heat exchanger for heat exchange, is lifted by the water pump into the water cooling tank, and is heated/cooled by the semiconductor in the water cooling tank and then enters the soil heat exchanger cycle.

The solar photoelectric converter 1 is composed of a plurality of polycrystalline silicon solar panels, which are installed outdoors; the polycrystalline silicon solar panels are connected in series or in parallel to provide different charging voltages and system operating voltages. When the solar photoelectric converter 1 generates sufficient electricity, it directly supplies power to the semiconductor air conditioner, and stores excess electricity in the battery 5; when the solar photoelectric converter 1 generates insufficient electricity, the battery 5 supplies power to the semiconductor water-cooled air conditioner. The controller 4 automatically or manually controls the charging and discharging of the storage battery 5 and the switching and load regulation of the semiconductor water-cooled air conditioner. The process of automatically adjusting the load of the air-conditioning equipment is as follows: when the air-conditioning equipment just starts working, the controller 4 connects all semiconductor thermopiles 15 to the circuit, so that the cooling/heating space 2 can be cooled/heated as soon as possible; When the temperature reaches the set value, the controller 4 reduces the working number of the semiconductor thermopile 15 or reduces the operating voltage of the semiconductor thermopile to adjust the cooling capacity to maintain a constant room temperature; when the temperature of the cooling/heating space 2 is higher than/ If it is lower than the set value, the controller 4 increases the working number of the semiconductor thermopile 15 or increases the working voltage of the semiconductor thermopile to lower/raise the room temperature.

Fig. 2 is the structural representation of semiconductor water-cooled air conditioner, and this semiconductor water-cooled air conditioner contains fan, water-cooled tank 12, fin radiator 10 and semiconductor thermopile 15, and described water-cooled tank, fin radiator and semiconductor thermopile are equally divided into two parts. Arranged in rows and symmetrically arranged, from outside to inside are water cooling tank 12, semiconductor thermopile 15 and fin radiator 10; the hot end of semiconductor thermopile during cooling or the cold end during heating is in contact with the water cooling tank. The cold end or the hot end during heating is in contact with the fin radiator, the contact surface is evenly coated with heat-conducting silicone grease, and the gap between the fin radiator and the water cooling tank is filled with thermal insulation cotton 11 . This structure arranges the air flow of the fan to be short, and the heat exchange is uniform, so as to reduce the heat transfer temperature difference, enhance the heat exchange effect, and increase the cooling/heating efficiency of the system. Different numbers of semiconductor thermopiles 15 can be selected according to different actual loads. In the controller 4, the series and parallel connection of the semiconductor thermopile 15 can be changed by controlling the connection mode of the semiconductor thermopile wire 16, so as to facilitate adjustment of the heat load of the semiconductor thermopile. In the space where semiconductor thermopile 15 is not arranged in the middle of water cooling tank 12 and fin radiator 10, heat insulation cotton 11 is filled, so as to reduce the heat transfer from the hot end of semiconductor thermopile to the cold end, and keep the cold end of semiconductor thermopile at a lower temperature. temperature.

Figure 3 is a half-sectional view of the water-cooling tank. The circulating water flows out from the water outlet 14 of the water-cooling tank, and after heat exchange with the soil through the soil heat exchanger 8, the water-cooling tank passes through the water-cooling tank from the semiconductor water-cooled air conditioner inlet pipe 6 through the circulating water pump 9. After the inlet 13 enters the water-cooling tank 12, it flows along the four-way water-cooling tank flow channel 17, exchanges heat with the water-cooling tank 12, and then flows from the outlet 14 of the water-cooling tank to the outlet pipe 7 of the semiconductor water-cooled air conditioner, reciprocating , the soil heat exchanger 8 constantly exchanges heat with the soil. In the air conditioning system, the heat generated by the semiconductor thermopile during cooling or the cold generated during heating is taken away by the circulating water.

The switching of the cooling/heating function of the system is realized by changing the direction of the current. In the controller 4, changing the positive and negative polarities of the power supply can immediately switch the cooling/heating function of the semiconductor water-cooled air-conditioning system.

Claims (2)

1. solar semiconductor water cooling air conditioning system that utilizes soil to execute heat exchange, comprise solar photoelectric converter (1), controller (4), battery (5), semiconductor water cooling air-conditioner (3), described semiconductor water cooling air-conditioner contains fan, water-cooling groove (12), semiconductor water cooling air-conditioner water inlet pipe (6), semiconductor water cooling air-conditioner outlet pipe (7), fin radiator (10) and semiconductor thermoelectric module (15), semiconductor water cooling air-conditioner water inlet pipe links to each other with the import (13) of water-cooling groove and the outlet (14) of water-cooling groove respectively with semiconductor water cooling air-conditioner outlet pipe, it is characterized in that: this solar semiconductor water cooling air conditioning system also contains and is arranged on underground ground heat exchanger (8) and water circulating pump (9), the water inlet of described ground heat exchanger links to each other with semiconductor water cooling air-conditioner outlet pipe, the delivery port of ground heat exchanger links to each other with semiconductor water cooling air-conditioner water inlet pipe, and described water circulating pump is arranged on semiconductor water cooling air-conditioner water inlet pipe or the semiconductor water cooling air-conditioner outlet pipe; The water that the cold junction in the hot junction when semiconductor thermoelectric module freezes/when heating flows out enters water-cooling groove through the ground heat exchanger heat exchange by water pump lifting, is gone into the soil heat exchanger and circulates by semiconductor heating/cooling is laggard in water-cooling groove.

2. according to the described a kind of solar semiconductor water cooling air conditioning system that utilizes soil to execute heat exchange of claim 1, it is characterized in that: described water-cooling groove (12), fin radiator and semiconductor thermoelectric module are divided equally two rows and are arranged, and symmetric arrangement is followed successively by water-cooling groove (12), semiconductor thermoelectric module (15) and fin radiator (10) from outside to inside; The hot junction in semiconductor thermoelectric module when refrigeration or the cold junction when heating contact with water-cooling groove, cold junction during refrigeration or the hot junction when heating contact with fin radiator, contact-making surface is coated with heat-conducting silicone grease, is filled with insulation cotton (11) in the space between fin radiator and water-cooling groove.

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