CN201302302Y

CN201302302Y - Air-cooled heat pump defrosting compensation and energy storage device utilizing solar energy

Info

Publication number: CN201302302Y
Application number: CNU200820158930XU
Authority: CN
Inventors: 欧阳军; 黄越南; 雷国华
Original assignee: XIANGTAN YUHENG ELECTRICAL EQUIPMENT CO Ltd
Current assignee: XIANGTAN YUHENG ELECTRICAL EQUIPMENT CO Ltd
Priority date: 2008-10-24
Filing date: 2008-10-24
Publication date: 2009-09-02
Anticipated expiration: 2018-10-24

Abstract

The utility model relates to an air-cooled heat pump defrosting compensation and energy storage device utilizing solar energy. Aiming to overcome the defects of limited heat storage capacity of the present defrosting compensation and energy storage device, or poor heating capacity and low stability of the system, the utility model provides the following technical scheme that the device comprises a solar collector, an anti-freezing hot-media outlet pipe of the solar collector is connected with the bottom on one side of an energy storage device through a heat-preservation pipeline, and an anti-freezing hot-media inlet pipe of the solar collector is connected with the top on the other side of the energy storage device through a heat-preservation pipeline; and a plurality of thermal compensation branch pipes placed on the side of a heat exchanger for an outdoor unit of an air conditioner are connected with the energy storage device through heat-preservation pipelines, the outlet pipes of the thermal compensation branch pipes are positioned at the bottom of the energy storage device on the same side of the inlet pipe of the solar collector, and the inlet pipes of the thermal compensation branch pipes are positioned at the top of the energy storage device on the same side of the output pipe of the solar collector. The utility model has the advantages of simple structure, low cost, energy saving, environmental protection, good defrosting effect and stable system.

Description

Utilize the wind-cooling heat pump defrosting, compensating energy storage equipment of solar energy

Technical field

The utility model belongs to civil engineering class Building Environment and Equipment Engineering subject technology field, is specifically related to a kind of wind-cooling heat pump defrosting, compensating energy storage equipment that utilizes solar energy.

Background technology

Net for air-source heat pump units is as the Cooling and Heat Source of air-conditioning system, because characteristics such as it is easy for installation, operation is simple have obtained significant progress in recent years.But, for lower, the area that humidity is bigger of outside air temperature in winter, net for air-source heat pump units is because outdoor heat exchanger surface frosting easily in heating process, can reduce the heat transfer coefficient of heat exchanger like this, increase the flow resistance of air side, reduce the heat capacity of unit, particularly the interior on a large scale freezing weather of 2008 southern areas at the beginning of the year makes the air-cooled heat pump air-conditioning normally to use.Certain document has carried out the experimental study of frozen condition to a net for air-source heat pump units, the result shows, during 1200m3/h after the air mass flow of the air-side heat exchanger 4440m3/h when frostless drops to frosting (having descended 75%), the heat exchange amount of air side has descended 20%.And when source pump was converted to the defrosting operating condition operation, net for air-source heat pump units not only can not on the contrary from the air conditioning terminal draw heat, cause air-conditioned room heat supply instability, thermal comfort to descend to indoor supply heat.

In order to improve the defrosting ability of air source heat pump, shorten defrosting time, eliminate the influence of defrosting to the air-conditioned room thermal comfort, someone has proposed to adopt the method defrosting of hot-gas bypass, promptly utilize refrigeration system compressor blast pipe and outdoor heat exchanger and intercapillary bypass circulation, the high-temperature exhaust air of compressor is directly introduced in the outdoor heat exchanger, by the white melting layer of compressor air-discharging heat the heat exchanger outside.Certain document has been introduced three kinds of methods that adopt the heat storage technology defrosting, and these three kinds of methods all are that storage heater directly is connected with compressor assembly, and wherein, method one is to adopt the water hold over system, but amount of stored heat is very limited; Method two is on the basis of conventional heat pump air conditioner phase transition heat accumulation unit to be installed, and heat-storing material is an organic material, and relative to want simple, heat capacity to quicken also very fast than other two kinds of methods for the system pipeline of this method, but essential auxiliary electrical heating; Method three also is to utilize the phase-transition heat-storage technology, source pump is stored in the waste heat of self in the organic phase change material, when defrosting, source pump discharges, thereby realize the continuously heating of source pump, source pump still can be to indoor heating in defrost process, but the quick heating capacity of this method is relatively poor, and the stability of a system is also not so good.

Summary of the invention

The purpose of this utility model is at the above-mentioned defective that exists in the prior art, provides that a kind of heating capacity is good, the wind-cooling heat pump defrosting, compensating energy storage equipment that utilizes solar energy of system stability.

The utility model is to realize above-mentioned purpose by the following technical solutions: this utilizes the wind-cooling heat pump defrosting, compensating energy storage equipment of solar energy, comprise an accumulator that contains energy storage materials of phase change, it also comprises a solar thermal collector, the antifreeze hot media outlet of solar thermal collector is connected with accumulator one side bottom by utilidor, and the antifreeze hot media inlet tube of heat collector is connected with accumulator opposite side top by utilidor; Insulation material is made and be surrounded by to the shell of accumulator by steel plate or PVC sheet material, its inside is divided into three layers by two microwell plates, and the middle level is filled with energy storage materials of phase change, and middle level one side is provided with the energy-accumulation material filling port, and seal with plug, the center of the upper and lower is provided with vertical dividing plate; Some thermal compensation arms that are positioned over the heat exchanger of air conditioner outdoor unit side are connected with the accumulator connection by utilidor, the outlet of thermal compensation arm is positioned at bottom, its inlet tube with the accumulator of heat collector inlet tube homonymy and then is positioned at top with the accumulator of heat collector outlet homonymy, and the outlet conduit of thermal compensation arm is provided with tubing pump.

The utility model adopts the high efficiency energy storage material in energy storage equipment, solar energy is stored, and is used for the wind-cooling heat pump defrosting thermal compensation, to weaken the influence to the air-conditioned room comfortableness when defrosting of air-cooled heat pump air-conditioning.Winter, when air source heat pump air-conditioner moves by day, can rely on the solar energy defrosting fully, and solar energy can be the air source heat pump air-conditioner compensate for heat energy, reach purpose of energy saving, in evening, air source heat pump air-conditioner can extract the solar energy that stores daytime and defrost from energy storage equipment, can save the required electric energy of a large amount of defrostings.Operation by experiment, but the air-conditioning of 1.5P average every day than common air-cooled heat pump air-conditioning saves energy 2.5 degree, average defrosting time shortens greatly, defrosting effect is obvious, the room heat supply is stable, thermal comfort is good.The utility model is not only simple in structure, cost is low, and the more important thing is and utilize the nature solar energy, energy-conserving and environment-protective, economical and practical for individual family, for country, the energy savings resource, the offspring benefits future generations.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the perspective view of accumulator among Fig. 1.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is described in further detail.

Referring to Fig. 1, it is the structural representation of the utility model embodiment, it comprises an accumulator 2 that contains energy storage materials of phase change 1, hanging installation and level inclination are greater than the solar thermal collectors 3 of 30 degree less than 45 degree, the antifreeze hot media outlet 4 of solar thermal collector 3 connects with accumulator 2 left bottom by utilidor 5, the antifreeze hot media inlet tube 6 of heat collector 3 is by utilidor 5 and accumulator 2 right side top attachment, and antifreeze hot media can be freon, salt solution or the water that has added anti-icing fluid.In conjunction with Fig. 2, insulation material is made and be surrounded by to the shell 7 of accumulator 2 by steel plate or PVC sheet material, and its inside is divided into three layers by two microwell plates 8, and the middle level is filled with energy storage materials of phase change 1, the right side, middle level is provided with energy-accumulation material filling port 9, and the center of the upper and lower is provided with vertical dividing plate 10; Some thermal compensation arms 11 that are positioned over the heat exchanger of air conditioner outdoor unit side connect with accumulator 2 by utilidor, the outlet of thermal compensation arm 11 is positioned at the bottom, right side of accumulator, the left side top that its inlet tube then is positioned at accumulator, the outlet conduit of thermal compensation arm is provided with tubing pump 12, air in the thermal compensation arm is pressed into accumulator by tubing pump, and the heat exchange that intersects with the antifreeze hot media of the solar thermal collector that is pressed into accumulator by hot pressing.

From Fig. 1 and Fig. 2, also can see, also be provided with auxiliary electrical heat pipe 13 in the bottom of accumulator 2, so as in the rainy for days sky as auxiliary thermal source.

Following table is that the utility model is installed on air conditioner, the result of the test of being done in winter in south:

Air conditioning energy consumption test result (weather: fine)

By experimental data as can be known, the operation of air-conditioner time is long more, and energy-saving effect is obvious more, but because solar energy is subjected to the restriction of the heat storage capacity of the restriction of sunshine-duration and accumulator, this effect does not show temporarily.For the air-conditioning of 1.5P, but about every day, average save power 2.5 was spent, energy-conservation more than 30%, energy-saving effect was obvious.

The utility model also can be used for the thermal compensation device of other family's heating equipment, can replace local electricity Warmer, electric blanket etc., it has more the characteristics such as energy-conserving and environment-protective, safety.

Claims

1, a kind of wind-cooling heat pump defrosting, compensating energy storage equipment that utilizes solar energy, comprise an accumulator that contains energy storage materials of phase change, it is characterized in that: it also comprises a solar thermal collector, the antifreeze hot media outlet of solar thermal collector is connected with accumulator one side bottom by utilidor, and the antifreeze hot media inlet tube of heat collector is connected with accumulator opposite side top by utilidor; Insulation material is made and be surrounded by to the shell of accumulator by steel plate or PVC sheet material, its inside is divided into three layers by two microwell plates, and the middle level is filled with energy storage materials of phase change, and middle level one side is provided with the energy-accumulation material filling port, and seal with plug, the center of the upper and lower is provided with vertical dividing plate; Some thermal compensation arms that are positioned over the heat exchanger of air conditioner outdoor unit side connect with accumulator by utilidor, the outlet of thermal compensation arm is positioned at bottom, its inlet tube with the accumulator of heat collector inlet tube homonymy and then is positioned at top with the accumulator of heat collector outlet homonymy, and the outlet conduit of thermal compensation arm is provided with tubing pump.

2, the wind-cooling heat pump defrosting, compensating energy storage equipment that utilizes solar energy according to claim 1, it is characterized in that: described solar thermal collector is that hanging installation and level inclination are spent less than 45 greater than 30 degree, and described antifreeze hot media can be freon, salt solution or the water that has added anti-icing fluid.

3, the wind-cooling heat pump defrosting, compensating energy storage equipment that utilizes solar energy according to claim 1 and 2 is characterized in that: be provided with the auxiliary electrical heat pipe in the bottom of described accumulator.