CN1318724A

CN1318724A - Solar energy heat pump with integrated heat collector, heat accumulator and evaporator

Info

Publication number: CN1318724A
Application number: CN 00137579
Authority: CN
Inventors: 侴乔力; 王志强; 刘殿铭; 张选施; 李子智; 刀鑫刚; 权田
Original assignee: DALIAN BINGSHAN GROUP Co Ltd
Current assignee: DALIAN BINGSHAN GROUP Co Ltd
Priority date: 2000-12-28
Filing date: 2000-12-28
Publication date: 2001-10-24
Anticipated expiration: 2020-12-28
Also published as: CN1131399C

Abstract

A solar heat pump combined with heat collector, heat accumulator and evaporator consists of several parallel interphase solar vacuum heat collecting tubes on the diffuse reflection plate, the metal finned sheet in it having high efficiency heat conductive tube with high end inserting into the heat reservation box which is full of water and distributed evenly with evaporation tubes as well as heat accumulation tubeswith phase transition. The high end and the low end of evaporator out of the heat reservation box are connected in proper sequence with compressor, condenser and throttle valve to form the heating pump circulation loop.

Description

Solar energy heat pump with integrated heat collector, heat accumulator and evaporator

The present invention relates to a kind ofly penetrate the solar heat pump that radiation is adopted heat and utilized phase-transition heat-storage entirely from the sun.

Solar thermal collector is when heat-collecting temperature is higher, and the environment heat waste is bigger, causes collecting efficiency to reduce.This external heating area only depends on the daylighting area of a standard width of a room in an old-style house of house sunny side, and solar thermal collector can only provide the heating of 2/5 depth area, and the heating of all the other 3/5 depth areas needs to replenish by electric energy.And adopt solar heat pump can use the electric energy of 1/8-2/5, the heating of full depth area just can be provided; Therefore, solar energy heating technology and heat pump techniques are combined, just might guide the solar energy heating technology into market to a deeper level.

Solar heat pump is slowly failed business-like reason and is the instantaneity of solar energy and is interrupted round the clock, has determined the practicability of solar heat pump technology, must be prerequisite with comprehensive utilization solar energy heating technology, heat storage technology and heat pump techniques; Yet existing solar heat pump is just solar thermal collector, storage heater etc., link with the evaporimeter or the condenser of heat pump respectively by the heating agent circulatory system, thereby heat exchanger platform number, middle heat exchange link and the heating agent circulatory system have been increased undoubtedly, manufacturing cost is improved, and reduce the coefficient of heat supply of system.

The objective of the invention is to overcome the deficiencies in the prior art part, a kind of heat collector, storage heater, the Trinitarian solar heat pump of evaporimeter are provided.

The technical solution used in the present invention, be included in diffuse reflector and be provided with many parallel alternate solar vacuum heat-collecting pipes, be provided with the high-efficiency heat conduction pipe in the metal tab in it, the high-end peripheral hardware insulation material that all inserts of these high-efficiency heat conduction pipes, in the incubator of inner filled with water, it is characterized in that: in the water in above-mentioned incubator housing, the evaporation tube that cold-producing medium flows through from bottom to top and the phase-transition heat-storage pipe of internal memory phase-change working substance are arranged in evenly arranging simultaneously, wherein evaporation tube stretch out the high end interface of incubator and low end interface in turn with compressor, condenser, choke valve connects into the heat pump cycle loop.Said high-efficiency heat conduction pipe can be a general heat pipe, and this moment, heat went up cold setting down; Also thermal conductivity factor far above the inorganic heat-transfer tube of general heat pipe, this at present heat go up cold or be horizontally disposed with and all can.Said metal tab, its shape can be Ω shapes, also X-shaped; Its material can be aluminium, copper, iron or its alloy.Said phase-transition heat-storage pipe and evaporation tube can be straight tubes, also spiral coil.Said phase-change working substance can be a kind of of various crystalline hydrate salt, various paraffin, various ester acid, or its mixture.Said diffuse reflector can be the plane reflection plate, also can be combined by V-arrangement reflecting surface below the every solar vacuum heat-collecting pipe or compound parabolic reflecting surface.

Operation principle of the present invention in conjunction with the accompanying drawings 1, accompanying drawing 2 and accompanying drawing 3 are described as follows: daytime, the sun is penetrated radiation directly and after diffuse reflector 2 reflections entirely, absorbed by the selective coating of solar vacuum heat-collecting pipe 1 inboard wall outer surface, then the inwall inner surface mainly by with the conductive force of the metal tab 3 of its elasticity stressed joint, solar energy heating is passed to the lower end of high-efficiency heat conduction pipe 4, insert in the incubator 5 its upper end, finally solar energy heating is discharged to the water in the incubator 56 by convection type, phase-transition heat-storage pipe 7 and evaporation tube 8 are immersed in the water 6 in the incubator 5, evaporation tube 8 along the heat pump cycle direction in turn with compressor 9, condenser 10 and choke valve 11 link, constitute heat pump cycle, with a part of solar energy heating that evaporation tube 8 is absorbed from water 6, pump is given the heating agent in the condenser 10 continuously; Meanwhile water 6 also passes to phase-transition heat-storage pipe 7 to another part solar energy heating that absorbs by convection type, make wherein phase-change working substance dissolving and heat absorbing and accumulation of heat, there not to be the solar time at night, again by solidifying heat release in the phase-transition heat-storage pipe 7, and through twice convection action of water 6 phase-transition heat-storage is offered evaporation tube 8.

Compared with prior art, advantage of the present invention is as follows:

1, it is for the first time the evaporimeter in the heat collector in the solar energy utilization technique, storage heater and the heat pump techniques, by high-efficiency heat conduction pipe, phase-transition heat-storage pipe, evaporation tube, be incorporated in the water in the incubator housing, thereby both reduced the heat exchange link, also saved the heating agent circulatory system, manufacturing cost is reduced;

2, because the present invention passes through the acting in conjunction of thermal-arrest, accumulation of heat and the insulation of solar vacuum heat-collecting pipe, high-efficiency heat conduction pipe, phase-transition heat-storage pipe, incubator etc., can improve the thermo-compression evaporation temperature with respect to environment temperature and maintain a certain scope between 0-40 ℃, by heat exchange link and environment heat waste in the middle of reducing, improved the heat pump heat supply coefficient in addition;

3, since heat pump adopt heat request and phase-transition heat-storage process, can be solar energy heating temperature 50-90 ℃ from routine, be reduced to 0-40 ℃, this more approaches the temperature of environment, thereby by reducing its environment heat waste, and the good transfer of heat characteristic of water, the collecting efficiency of solar thermal collector among the present invention is further improved from existing 62%, thereby make the present invention on the level of system, more effectively utilize solar energy;

4, phase-change working substance is filled in the heat accumulation pipe, both can have alleviated, also can improve the interior thermal storage density of incubator, its volume is reduced because its thermal conductivity factor is low and produce the influence of the air gap institute to accumulation of heat, rate of heat release during solidification shrinkage;

5, water is as the hot media that has the good transfer of heat characteristic in the incubator, the heat release of high-efficiency heat conduction pipe, accumulation of heat one heat release of phase-transition heat-storage pipe, the heat exchange links such as heat absorption of evaporation tube are all kept efficiently, thereby, improve system of the present invention coefficient of heat supply once more by reducing heat transfer temperature difference; 6, the thermophysical property of the high specific heat of water, high heat of solution and 0 ℃ of molten point, make it both can utilize the sensible heat accumulation of heat at severe cold area, also can utilize phase-transition heat-storage, thereby under the molten point of phase-change working substance and water, respectively at twice phase transformation takes place in the phase-transition heat-storage pipe and in the incubator, become two warm phase-transition heat-storage bobbin carriages, thus guarantee evaporation tube among the present invention adopt that hot temperature is unlikely to be lower than 0 ℃.

Description of drawings:

Accompanying drawing 1 is the structural representation of the embodiment of the invention.

Accompanying drawing 2 is the profile of the embodiment of the invention.

Accompanying drawing 3 is the profile of solar thermal collector in the embodiment of the invention.

The heat collector that the present invention proposes, storage heater, embodiment of evaporimeter Trinity solar heat pump such as accompanying drawing 1, shown in accompanying drawing 2 and the accompanying drawing 3, now be described as follows: both sides respectively have on the diffuse reflector that 11 V-arrangement aluminium sheets are combined into, be provided with 22 long 1.5m altogether, external diameter 50mm, the solar vacuum heat-collecting pipe of parallel alternate 50mm, respectively be provided with a long 1.6m in the Ω shape aluminum fin in it, the inorganic heat-transfer tube of external diameter 8mm, all these are all downward-sloping with 5 degree both sides, angle with the concentric inorganic heat-transfer tube of solar vacuum heat-collecting pipe, and the middle high-end peripheral hardware insulation material that all inserts, inner filled with water, and high 3.0m, in the vertical incubator of internal diameter 380mm, in the water in above-mentioned incubator housing, evenly arranging an internal diameter 10mm, the spiral evaporation coil that has cold-producing medium to flow through from bottom to top, and 16 internal diameter 15mm, be filled with the phase-transition heat-storage straight tube of 40 ℃ of molten some paraffin, wherein evaporation coil stretch out the high end interface of incubator and low end interface in turn with compressor, condenser, choke valve connects into the heat pump cycle loop.The embodiment of the invention is penetrated radiation intensity daily mean 700W/m entirely at the sun ², 8 hours sunshine-durations, per day ambient air temperature-20 ℃ meteorological condition under, when heat supply temperature is 60 ℃, can realize 24 hourly average heating power 539W round the clock, coefficient of heat supply reaches 5.0, required power consumption is 108W.

Claims

1, a kind of heat collector, storage heater, evaporimeter Trinity solar heat pump, be included in diffuse reflector (2) and be provided with many parallel alternate solar vacuum heat-collecting pipes (1), be provided with high-efficiency heat conduction pipe (4) in the metal tab (3) in it, the high-end peripheral hardware insulation material that all inserts of these high-efficiency heat conduction pipes (4), in the incubator (5) of inner filled with water (6), it is characterized in that: in the water (6) in above-mentioned incubator (5) housing, the evaporation tube (8) that cold-producing medium flows through from bottom to top and the phase-transition heat-storage pipe (7) of internal memory phase-change working substance are arranged in evenly arranging simultaneously, wherein evaporation tube (8) stretch out the high end interface of incubator (5) and low end interface in turn with compressor (9), condenser (10), choke valve (11) connects into the heat pump cycle loop.

2, as claim 1, described solar heat pump, it is characterized in that: high-efficiency heat conduction pipe (4) can be a general heat pipe, and this moment, heat went up cold setting down; Also thermal conductivity factor far above the inorganic heat-transfer tube of general heat pipe, this at present heat go up cold or be horizontally disposed with and all can.

3, as claim 1, described solar heat pump, it is characterized in that: the shape of metal tab (3) can be a Ω shape, also X-shaped; Material can be aluminium, copper, iron or its alloy.