CN104061717A - Seasonal thermal storage solar low-temperature thermal electricity generation composite ground-source heat pump system - Google Patents

Seasonal thermal storage solar low-temperature thermal electricity generation composite ground-source heat pump system Download PDF

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CN104061717A
CN104061717A CN201410297229.6A CN201410297229A CN104061717A CN 104061717 A CN104061717 A CN 104061717A CN 201410297229 A CN201410297229 A CN 201410297229A CN 104061717 A CN104061717 A CN 104061717A
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China
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heat
heat exchanger
circulating pump
pump
valve
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CN201410297229.6A
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CN104061717B (en
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韩宗伟
宋晓蓓
林闽
张艳红
热孜望.坎吉
阴启明
张艳清
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新疆太阳能科技开发公司
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/46Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines

Abstract

The invention discloses a seasonal thermal storage solar low-temperature thermal electricity generation composite ground-source heat pump system. The system consists of a solar thermal collector, a ground heat exchanger, a first heat exchanger, a second heat exchanger, a third heat exchanger, a booster pump, an expansion machine, a generator, a ground-source heat pump cold and hot water unit, an electrical storage device and the like, wherein the first heat exchanger, the second heat exchanger, the booster pump, the expansion machine and the generator form an organic Rankine cycle low-temperature thermal electricity generation device; the solar thermal collector collects solar energy all the year round, in a non-heat supply period, the collected solar heat is used as a heat source of the low-temperature thermal electricity generation device by the first heat exchanger, cold is obtained from soil by a thermal storage series soil heat exchanger and is used as a cold source of the low-temperature thermal electricity generation device by the second heat exchanger, and the heat of condensation is stored in the soil. The system is applicable to civil architectures and office buildings in a severe cold area, and is particularly applicable to regions, which are far away from a centralized heating heat pipeline, are strict in atmospheric environment requirements and have frequent outage, of the severe cold area.

Description

A kind of seasonal storage solar energy low-temperature heat power generation composite ground source heat pump system
Technical field
The present invention relates to heat pump heating field of air conditioning and solar energy low-temperature heat power generation field, specifically a kind of seasonal storage solar energy low-temperature heat power generation composite ground source heat pump system, this system can be used as the heating air-conditioner system Cooling and Heat Source of severe cold area civil buildings and public building, is specially adapted to the architectural object that severe cold area is far away apart from central heating heat pipeline, atmospheric environment is required to strict frequent power-off area.
Background technology
China is vast in territory, overwhelming majority area is in severe cold and cold district, the building in these areas all needs to use heating air-conditioner system, and to earth-source hot-pump system, the application in building heating ventilation air-conditioning system has brought huge development potentiality in the fast development of urban architecture.The severe cold area heat supply in winter phase is long, thermic load is very large, and the summer air-conditioning phase is relatively short, refrigeration duty is less, the mean temperature of soil is lower, if use separately earth-source hot-pump system to heat, air-conditioning, will certainly cause inconsistent to soil heat-obtaining and concurrent heating of system, the soil heat exchanger soil moisture around will decline year by year, after long-play, buried tube heat exchanger Soil Temperature Field around there will be expendable deterioration, simultaneously along with heat exchanger surrounding soil temperature declines gradually, the coefficient of performance in heating of heat pump also declines gradually, even there will be the phenomenon of undercapacity.In order to realize the thermal balance of heat exchanger surrounding soil temperature field taking year as the cycle, ensure the efficient operation of source pump, must be to soil additional heat.Solar energy is inexhaustible, the nexhaustible energy; the solar heat that utilizes solar thermal collector to collect carries out concurrent heating to soil; intermittently heat as thermal source is a well selection simultaneously; although concurrent heating process is only moved circulating pump; but still will consume certain electric energy, if there is the loss of power accident, water pump cannot normally be worked; often can make solar thermal collector excess Temperature cause booster, the security of system is reduced.
For the problems referred to above, the present invention proposes a kind of seasonal storage solar energy low-temperature heat power generation composite ground source heat pump system, this system utilizes solar energy as high temperature heat source, using soil as low-temperature heat source, adopt organic Lang Ken circulating generation, to drive accumulation of heat circulating pump, cooling circulating pump etc., make this system can realize zero energy consumption accumulation of heat, can also avoid the heat collector failure problems causing because having a power failure to occur simultaneously.Compared with traditional solar energy low-temperature heat power generation system, this system has adopted the soil heat sink that temperature is lower, more stable, and generating efficiency improves greatly.
Summary of the invention
The invention provides a kind of seasonal storage solar energy low-temperature heat power generation composite ground source heat pump system, this device has been realized solar energy, thin solum heat energy efficiently utilizes, and system architecture compactness is convenient to install, and operation is controlled flexibly.
To achieve these goals, the present invention adopts following technical scheme:
1. a seasonal storage solar energy low-temperature heat power generation composite ground source heat pump system, its system comprises the compositions such as solar thermal collector 1, accumulation of heat series soil heat exchanger 2, cooling series soil heat exchanger 3, the first heat exchanger 4, the second heat exchanger 5, the 3rd heat exchanger 6, decompressor 7, generator 8, ground-source heat pump cold-hot water machine group 9, booster pump 10, the first circulating pump 11, the second circulating pump 12, the 3rd circulating pump 13, the 4th circulating pump 14, electrical storage device 24; The outlet of described solar thermal collector 1 is connected with the hot side entrance of the first heat exchanger 4 through the first valve 15; The hot side outlet of the first described heat exchanger 4 is connected with the import of solar thermal collector 1 through the first circulating pump 11; The cold side outlet of the first heat exchanger 4 is connected with the hot side entrance of the second heat exchanger 5 through decompressor 7; The hot side outlet of the second described heat exchanger 5 is connected with the cold side entrance of the first heat exchanger 4 through booster pump 10; The cold side outlet of the second heat exchanger 5 is connected with the entrance of accumulation of heat series soil heat exchanger 2 through the 3rd valve 17; The outlet of described accumulation of heat series soil heat exchanger 2 is connected with the cold side entrance of the second heat exchanger 5 through the second circulating pump 12; The outlet of described decompressor 7 is connected with generator 8, electrical storage device 24 successively; The outlet of described cooling series soil heat exchanger 3 is connected with the heat source side entrance of the 3rd heat exchanger 6 through the 3rd circulating pump 13, the 5th valve 19; The heat source side outlet of the 3rd described heat exchanger 6 is connected with the entrance of cooling series soil heat exchanger 3; Vaporizer side chilled water outlet when described ground-source heat pump cold-hot water machine group 9 supplies thermal condition is connected with the entrance of accumulation of heat series soil heat exchanger 2 through the 6th valve 20, the 4th valve 18; Vaporizer side chilled water inlet when ground-source heat pump cold-hot water machine group 9 supplies thermal condition is connected with the outlet of accumulation of heat series soil heat exchanger 2 through the second valve 16, the second circulating pump 12; Vaporizer side chilled water outlet when ground-source heat pump cold-hot water machine group 9 supplies thermal condition is connected with the entrance of cooling series soil heat exchanger 3 through the 6th valve 20; Vaporizer side chilled water inlet when ground-source heat pump cold-hot water machine group 9 supplies thermal condition is connected with the outlet of cooling series soil heat exchanger 3 through the 3rd circulating pump 13; Condenser side coolant outlet when ground-source heat pump cold-hot water machine group 9 supplies thermal condition is connected with user's water supply line through the 9th valve 23, the 4th circulating pump 14; Condenser side cooling water inlet when ground-source heat pump cold-hot water machine group 9 supplies thermal condition is connected with user's water return pipeline; The heat source side entrance of the 3rd described heat exchanger 6 is connected with the outlet of solar thermal collector 1; The heat source side outlet of the 3rd heat exchanger 6 is connected with the entrance of solar thermal collector 1 through the 7th valve 21, the first circulating pump 11; The user side inlet of the 3rd heat exchanger 6 is connected with user's water supply line through the 4th circulating pump 14; User's side outlet of the 3rd heat exchanger 6 is connected with user's water return pipeline through the 8th valve 22;
A kind of seasonal storage solar energy low-temperature heat power generation composite ground source heat pump system of the present invention, is characterized in that: described the first heat exchanger, the second heat exchanger and the 3rd heat exchanger are water cooling heat exchanger.
A kind of seasonal storage solar energy low-temperature heat power generation composite ground source heat pump system of the present invention, is characterized in that: described electrical storage device can be respectively to accumulation of heat circulating pump, cooling circulating pump and the power supply of household electricity equipment.
A kind of seasonal storage solar energy low-temperature heat power generation composite ground source heat pump system of the present invention, it is characterized in that: described the first heat exchanger, booster pump, the second heat exchanger, decompressor and generator form low-temperature heat power generating device, this device course of work adopts organic Rankine circulation, can adopt organic working medium to comprise R134a, R22 etc.
A kind of seasonal storage solar energy low-temperature heat power generation composite ground source heat pump system of the present invention, it is characterized in that: described solar thermal collector outlet fluid temperature (F.T.) is higher than 80 DEG C, can be high temperature heat collector, middle high temperature heat collector, middle low-temperature heat collection device, can adopt light-focusing type, vacuum tube type, flat plate collector.
The operation method of seasonal storage solar energy low-temperature heat power generation composite ground source heat pump system provided by the invention, is characterized in that: the operation method of described seasonal storage solar energy low-temperature heat power generation composite ground source heat pump system comprises following six kinds of operational modes:
solar energy thermal-power-generating soil thermal storage pattern, this mode operation is in the time that non-heating period or heating period system stop heating, the solar heat that solar thermal collector is collected passes to organic working medium by the first heat exchanger heat, promote decompressor acting, generator generating, institute's generated energy is used for driving the first circulating pump, unnecessary electric weight deposits in electrical storage device, and for other household electricity, low-temperature heat power generating device condensation heat stores in accumulation of heat series soil heat exchanger by the second heat exchanger.
the direct cooling pattern of solar energy thermal-power-generating soil thermal storage-soil, this mode operation is at the cooling initial stage, now buried tube heat exchanger surrounding soil temperature is lower, user's refrigeration duty is smaller, solar energy low-temperature heat power generation device institute generated energy is used for driving the first circulating pump, the second circulating pump, the 3rd circulating pump, the 4th circulating pump, unnecessary electric weight deposits in electrical storage device, and for other household electricity, low-temperature heat power generating device condensation heat stores in its surrounding soil by accumulation of heat series soil heat exchanger.Carry out solar energy low-temperature heat power generation to the accumulation of heat of accumulation of heat series soil heat exchanger surrounding soil in, get cold and supply with user by the 3rd heat exchanger by cooling series soil heat exchanger.
solar energy thermal-power-generating soil thermal storage-earth source heat pump cooling pattern, this mode operation is in the cooling middle and later periods, cooling series buried tube heat exchanger surrounding soil temperature is higher, do not reach cooling requirement, or user's refrigeration duty is larger, the direct cooling of soil is difficult to meet the demands, solar energy low-temperature heat power generation device institute generated energy is used for driving the first circulating pump, the second circulating pump, the 3rd circulating pump, the 4th circulating pump, unnecessary electric weight deposits in electrical storage device, for other household electricity, low-temperature heat power generating device condensation heat stores in its surrounding soil by accumulation of heat series soil heat exchanger.Carry out solar energy low-temperature heat power generation to the accumulation of heat of accumulation of heat series soil heat exchanger surrounding soil in, utilize cooling series soil heat exchanger to get low-temperature receiver that cold-working is ground-source heat pump cold-hot water machine group to user's cooling, condensation heat stores in cooling series soil heat exchanger surrounding soil.
solar energy direct heating pattern, this mode operation in In The Initial Period Of Heating or heating user's thermic load in latter stage hour, if solar thermal collector heat-collecting capacity can meet separately heating demand, the heat that solar thermal collector is collected is directly supplied with user by the 3rd heat exchanger.
solar energy-Heating by Ground Source Heat Pump pattern, this mode operation is heating mid-term, when solar thermal collector can not meet separately heating demand, start ground-source heat pump cold-hot water machine group auxiliary heating, cold is stored simultaneously in accumulation of heat series soil heat exchanger, cooling series soil heat exchanger surrounding soil.
heating by Ground Source Heat Pump pattern, this mode operation is in the time that heating period night, a cloudy snow day solar thermal collector can not be used for heating, utilize accumulation of heat series soil heat exchanger, cooling series soil heat exchanger heat-obtaining from its surrounding soil, low-temperature heat source as ground-source heat pump cold-hot water machine group heats to user, cold is stored in accumulation of heat series soil heat exchanger, cooling series soil heat exchanger surrounding soil simultaneously.
Beneficial effect of the present invention:
(1) energy-saving and emission-reduction, make full use of regenerative resource.Traditional heating air-conditioner system adopts the wide variety of conventional energy, causes the waste of the energy.Native system makes full use of the regenerative resource such as solar energy, geothermal energy, reduces the dependence to conventional energy resource, relies on the coupling of various energy resources, and energy saving of system improves greatly;
(2) have complementary advantages, realize soil heat balance.By compound to solar energy low-temperature heat power generation hold over system and earth-source hot-pump system, improve temperature and the source pump heating effect in winter of soil, can ensure when earth-source hot-pump system moves for a long time the thermal balance of ground heat exchanger surrounding soil;
(3) reliable, realize zero cooling, accumulation of heat energy consumption.Utilize soil and solar energy to drive water circulating pump as the Cooling and Heat Source generating of low-temperature heat power generating device, condensation heat is all stored in soil, in the time that remaining in addition, electric weight also can be used as supplying with user's household electricity, cooling, accumulation of heat zero energy consumption are realized, avoided because power-off causes collecting system overheated simultaneously, and then the hidden danger that causes collecting system to damage.
Brief description of the drawings
Fig. 1 is the structural representation of seasonal storage solar energy low-temperature heat power generation composite ground source heat pump system of the present invention;
Fig. 2 is the structural representation of solar energy thermal-power-generating soil thermal storage of the present invention;
Fig. 3 is the structural representation of the direct cooling of solar energy thermal-power-generating soil thermal storage-soil of the present invention;
Fig. 4 is the structural representation of solar energy thermal-power-generating soil thermal storage-earth source heat pump cooling of the present invention;
Fig. 5 is the structural representation of solar energy direct heating of the present invention;
Fig. 6 is the structural representation of solar energy-ground source heat pump heating of the present invention;
Fig. 7 is the structural representation of Heating by Ground Source Heat Pump of the present invention;
In Fig. 1-Fig. 7, the title of Reference numeral is as follows: 1-solar thermal collector, 2-accumulation of heat series soil heat exchanger, 3-cooling series soil heat exchanger, 4-the first heat exchanger, 5-the second heat exchanger, 6-the 3rd heat exchanger, 7-decompressor, 8-generator, 9-ground source heat pump hot water unit, 10-booster pump, 11-the first circulating pump, 12-the second circulating pump, 13-the 3rd circulating pump, 14-the 4th circulating pump, 15-the first valve, 16-the second valve, 17-the 3rd valve, 18-the 4th valve, 19-the 5th valve, 20-the 6th valve, 21-the 7th valve, 22-the 8th valve, 23-the 9th valve, 24-electrical storage device.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1, this is seasonal storage solar energy low-temperature heat power generation composite ground source heat pump system, and its system comprises the compositions such as solar thermal collector 1, accumulation of heat series soil heat exchanger 2, cooling series soil heat exchanger 3, the first heat exchanger 4, the second heat exchanger 5, the 3rd heat exchanger 6, decompressor 7, generator 8, ground-source heat pump cold-hot water machine group 9, booster pump 10, the first circulating pump 11, the second circulating pump 12, the 3rd circulating pump 13, the 4th circulating pump 14, electrical storage device 24; The outlet of described solar thermal collector 1 is connected with the hot side entrance of the first heat exchanger 4 through the first valve 15; The hot side outlet of the first described heat exchanger 4 is connected with the import of solar thermal collector 1 through the first circulating pump 11; The cold side outlet of the first heat exchanger 4 is connected with the hot side entrance of the second heat exchanger 5 through decompressor 7; The hot side outlet of the second described heat exchanger 5 is connected with the cold side entrance of the first heat exchanger 4 through booster pump 10; The cold side outlet of the second heat exchanger 5 is connected with the entrance of accumulation of heat series soil heat exchanger 2 through the 3rd valve 17; The outlet of described accumulation of heat series soil heat exchanger 2 is connected with the cold side entrance of the second heat exchanger 5 through the second circulating pump 12; The outlet of described decompressor 7 is connected with generator 8, electrical storage device 24 successively; The outlet of described cooling series soil heat exchanger 3 is connected with the heat source side entrance of the 3rd heat exchanger 6 through the 3rd circulating pump 13, the 5th valve 19; The heat source side outlet of the 3rd described heat exchanger 6 is connected with the entrance of cooling series soil heat exchanger 3; Vaporizer side chilled water outlet when described ground-source heat pump cold-hot water machine group 9 supplies thermal condition is connected with the entrance of accumulation of heat series soil heat exchanger 2 through the 6th valve 20, the 4th valve 18; Vaporizer side chilled water inlet when ground-source heat pump cold-hot water machine group 9 supplies thermal condition is connected with the outlet of accumulation of heat series soil heat exchanger 2 through the second valve 16, the second circulating pump 12; Vaporizer side chilled water outlet when ground-source heat pump cold-hot water machine group 9 supplies thermal condition is connected with the entrance of cooling series soil heat exchanger 3 through the 6th valve 20; Vaporizer side chilled water inlet when ground-source heat pump cold-hot water machine group 9 supplies thermal condition is connected with the outlet of cooling series soil heat exchanger 3 through the 3rd circulating pump 13; Condenser side coolant outlet when ground-source heat pump cold-hot water machine group 9 supplies thermal condition is connected with user's water supply line through the 9th valve 23, the 4th circulating pump 14; Condenser side cooling water inlet when ground-source heat pump cold-hot water machine group 9 supplies thermal condition is connected with user's water return pipeline; The heat source side entrance of the 3rd described heat exchanger 6 is connected with the outlet of solar thermal collector 1; The heat source side outlet of the 3rd heat exchanger 6 is connected with the entrance of solar thermal collector 1 through the 7th valve 21, the first circulating pump 11; The user side inlet of the 3rd heat exchanger 6 is connected with user's water supply line through the 4th circulating pump 14; User's side outlet of the 3rd heat exchanger 6 is connected with user's water return pipeline through the 8th valve 22; Fig. 2-Fig. 7 is respectively the structural representation of different operational modes of the present invention.
Below in conjunction with brief description of the drawings use procedure of the present invention:
As shown in Figure 2, this is solar energy thermal-power-generating soil thermal storage pattern, this mode operation is in the time that non-heating period or heating period system stop heating, open booster pump 10, the first circulating pump 11, the second circulating pump 12, the first valve 15, the 3rd valve 17, close all the other valves, the solar heat that solar thermal collector 1 is collected passes to organic working medium by the first heat exchanger 4 heat, promoting decompressor 7 does work, generator 8 generates electricity, institute's generated energy is used for driving the first circulating pump 11, unnecessary electric weight deposits in electrical storage device 24, for other household electricity, low-temperature heat power generating device condensation heat stores in accumulation of heat series soil heat exchanger 2 by the second heat exchanger 5.
As shown in Figure 3, this is the direct cooling pattern of solar energy thermal-power-generating soil thermal storage-soil, this mode operation is at the cooling initial stage, now buried tube heat exchanger surrounding soil temperature is lower, user's refrigeration duty is smaller, open booster pump 10, the first circulating pump 11, the second circulating pump 12, the 3rd circulating pump 13, the 4th circulating pump 14, the first valve 15, the 3rd valve 17, the 5th valve 19, the 8th valve 22, close all the other valves.Now, solar energy low-temperature heat power generation device institute generated energy is used for driving the first circulating pump 11, the second circulating pump 12, the 3rd circulating pump 13, the 4th circulating pump 14, unnecessary electric weight deposits in electrical storage device 24, for other household electricity, low-temperature heat power generating device condensation heat stores in its surrounding soil by accumulation of heat series soil heat exchanger 2.Carry out solar energy low-temperature heat power generation to the 2 surrounding soil accumulation of heats of accumulation of heat series soil heat exchanger in, get cold and supply with user by the 3rd heat exchanger 6 by cooling series soil heat exchanger 3.
As shown in Figure 4, this is the direct cooling pattern of solar energy thermal-power-generating accumulation of heat-earth source heat pump, and this mode operation is in the cooling middle and later periods, cooling series buried tube heat exchanger surrounding soil temperature is higher, do not reach cooling requirement, or user's refrigeration duty is larger, the direct cooling of soil is difficult to meet the demands.Now, open booster pump 10, the first circulating pump 11, the second circulating pump 12, the 3rd circulating pump 13, the 4th circulating pump 14, the first valve 15, the 3rd valve 17, the 6th valve 20, the 9th valve 23, close all the other valves, now, solar energy low-temperature heat power generation device institute generated energy is used for driving the first circulating pump 11, the second circulating pump 12, the 3rd circulating pump 13, the 4th circulating pump 14, unnecessary electric weight deposits in electrical storage device 24, for other household electricity, low-temperature heat power generating device condensation heat stores in its surrounding soil by accumulation of heat series soil heat exchanger 2.Carry out solar energy low-temperature heat power generation to the 2 surrounding soil accumulation of heats of accumulation of heat series soil heat exchanger in, utilize cooling series soil heat exchanger 3 to get low-temperature receiver that cold-working is ground-source heat pump cold-hot water machine group 9 to user's cooling, condensation heat stores in cooling series soil heat exchanger 3 surrounding soils.
As shown in Figure 5, this is solar energy direct heating pattern, this mode operation in In The Initial Period Of Heating or heating user's thermic load in latter stage hour, if solar thermal collector 1 heat-collecting capacity can meet separately heating demand, open the first circulating pump 11, the 4th circulating pump 14, the 7th valve 21, the 8th valve 22, close all the other valves, the heat that solar thermal collector 1 is collected is directly supplied with user by the 3rd heat exchanger 6.
As shown in Figure 6, this is solar energy-earth source heat pump direct heating pattern, this mode operation is heating mid-term, when solar thermal collector can not meet separately heating demand, start ground-source heat pump cold-hot water machine group 9 auxiliary heatings, open the first circulating pump 11, the second circulating pump 12, the 3rd circulating pump 13, the 4th circulating pump 14, the second valve 16, the 4th valve 18, the 6th valve 20, the 7th valve 21, the 8th valve 22, the 9th valve 23, close all the other valves, heat with solar energy and earth source heat pump, cold is stored at accumulation of heat series soil heat exchanger 2 simultaneously, in cooling series soil heat exchanger 3 surrounding soils.
As shown in Figure 7, this is earth source heat pump direct heating pattern, this mode operation is at heating period night, when a cloudy snow day solar thermal collector can not be used for heating, open the second circulating pump 12, the 3rd circulating pump 13, the 4th circulating pump 14, the second valve 16, the 4th valve 18, the 6th valve 20, the 9th valve 23, close all the other valves, utilize accumulation of heat series soil heat exchanger 2, cooling series soil heat exchanger 3 heat-obtaining from its surrounding soil, low-temperature heat source as ground-source heat pump cold-hot water machine group 9 heats to user, cold is stored at accumulation of heat series soil heat exchanger 2 simultaneously, in cooling series soil heat exchanger 3 surrounding soils.
In the present embodiment, the cold-producing medium of earth-source hot-pump system can adopt R22, R134a etc., and the heat-transfer working medium in organic Rankine circulation can adopt R134a, R22, R245fa, R407c, R123 etc.

Claims (6)

1. a seasonal storage solar energy low-temperature heat power generation composite ground source heat pump system, its system comprises the compositions such as solar thermal collector (1), accumulation of heat series soil heat exchanger (2), cooling series soil heat exchanger (3), the first heat exchanger (4), the second heat exchanger (5), the 3rd heat exchanger (6), decompressor (7), generator (8), ground-source heat pump cold-hot water machine group (9), booster pump (10), the first circulating pump (11), the second circulating pump (12), the 3rd circulating pump (13), the 4th circulating pump (14), electrical storage device (24); The outlet of described solar thermal collector (1) is connected with the hot side entrance of the first heat exchanger (4) through the first valve (15); The hot side outlet of described the first heat exchanger (4) is connected with the import of solar thermal collector (1) through the first circulating pump (11); The cold side outlet of the first heat exchanger (4) is connected with the hot side entrance of the second heat exchanger (5) through decompressor (7); The hot side outlet of described the second heat exchanger (5) is connected with the cold side entrance of the first heat exchanger (4) through booster pump (10); The cold side outlet of the second heat exchanger (5) is connected with the entrance of accumulation of heat series soil heat exchanger (2) through the 3rd valve (17); The outlet of described accumulation of heat series soil heat exchanger (2) is connected with the cold side entrance of the second heat exchanger (5) through the second circulating pump (12); The outlet of described decompressor (7) is connected with generator (8), electrical storage device (24) successively; The outlet of described cooling series soil heat exchanger (3) is connected with the heat source side entrance of the 3rd heat exchanger (6) through the 3rd circulating pump (13), the 5th valve (19); The heat source side outlet of the 3rd described heat exchanger (6) is connected with the entrance of cooling series soil heat exchanger (3); Vaporizer side chilled water outlet when described ground-source heat pump cold-hot water machine group (9) supplies thermal condition is connected with the entrance of accumulation of heat series soil heat exchanger (2) through the 6th valve (20), the 4th valve (18); Vaporizer side chilled water inlet when ground-source heat pump cold-hot water machine group (9) supplies thermal condition is connected with the outlet of accumulation of heat series soil heat exchanger (2) through the second valve (16), the second circulating pump (12); Vaporizer side chilled water outlet when ground-source heat pump cold-hot water machine group (9) supplies thermal condition is connected with the entrance of cooling series soil heat exchanger (3) through the 6th valve (20); Vaporizer side chilled water inlet when ground-source heat pump cold-hot water machine group (9) supplies thermal condition is connected with the outlet of cooling series soil heat exchanger (3) through the 3rd circulating pump (13); Condenser side coolant outlet when ground-source heat pump cold-hot water machine group (9) supplies thermal condition is connected with user's water supply line through the 9th valve (23), the 4th circulating pump (14); Condenser side cooling water inlet when ground-source heat pump cold-hot water machine group (9) supplies thermal condition is connected with user's water return pipeline; The heat source side entrance of the 3rd described heat exchanger (6) is connected with the outlet of solar thermal collector (1); The heat source side outlet of the 3rd heat exchanger (6) is connected with the entrance of solar thermal collector (1) through the 7th valve (21), the first circulating pump (11); The user side inlet of the 3rd heat exchanger (6) is connected with user's water supply line through the 4th circulating pump (14); User's side outlet of the 3rd heat exchanger (6) is connected with user's water return pipeline through the 8th valve (22).
2. a kind of seasonal storage solar energy low-temperature heat power generation composite ground source heat pump system according to claim 1, is characterized in that: described the first heat exchanger (4), the second heat exchanger (5) and the 3rd heat exchanger (6) are water cooling heat exchanger.
3. a kind of seasonal storage solar energy low-temperature heat power generation composite ground source heat pump system according to claim 1, is characterized in that: described electrical storage device (24) can be respectively to accumulation of heat circulating pump, cooling circulating pump and the power supply of household electricity equipment.
4. a kind of seasonal storage solar energy low-temperature heat power generation composite ground source heat pump system according to claim 1, it is characterized in that: described the first heat exchanger (4), booster pump (10), the second heat exchanger (5), decompressor (7) form low-temperature heat power generating device with generator (8), this device course of work adopts organic Rankine circulation, can adopt organic working medium to comprise R134a, R22, R245fa, R407c, R123 etc.
5. a kind of seasonal storage solar energy low-temperature heat power generation composite ground source heat pump system according to claim 1, it is characterized in that: described solar thermal collector (1) outlet fluid temperature (F.T.) is higher than 80 DEG C, can be high temperature heat collector, middle high temperature heat collector, middle low-temperature heat collection device, can adopt light-focusing type, vacuum tube type, flat plate collector.
6. the method for operation of seasonal storage solar energy low-temperature heat power generation composite ground source heat pump system according to claim 1, is characterized in that: the operation method of described seasonal storage solar energy low-temperature heat power generation composite ground source heat pump system comprises following six kinds of operational modes:
this system runs on described solar energy thermal-power-generating soil thermal storage pattern, this mode operation is in the time that non-heating period or heating period system stop heating, open booster pump (10), the first circulating pump (11), the second circulating pump (12), the first valve (15), the 3rd valve (17), close all the other valves, the solar heat that solar thermal collector (1) is collected passes to organic working medium by the first heat exchanger (4) heat, promote decompressor (7) acting, generator (8) generating, institute's generated energy is used for driving the first circulating pump (11), unnecessary electric weight deposits in electrical storage device (24), for other household electricity, low-temperature heat power generating device condensation heat stores in accumulation of heat series soil heat exchanger (2) by the second heat exchanger (5),
this system runs on the described direct cooling pattern of solar energy thermal-power-generating soil thermal storage-soil, this mode operation is at the cooling initial stage, now buried tube heat exchanger surrounding soil temperature is lower, user's refrigeration duty is smaller, open booster pump (10), the first circulating pump (11), the second circulating pump (12), the 3rd circulating pump (13), the 4th circulating pump (14), the first valve (15), the 3rd valve (17), the 5th valve (19), the 8th valve (22), close all the other valves; Now, solar energy low-temperature heat power generation device institute generated energy is used for driving the first circulating pump (11), the second circulating pump (12), the 3rd circulating pump (13), the 4th circulating pump (14), unnecessary electric weight deposits in electrical storage device (24), for other household electricity, low-temperature heat power generating device condensation heat stores in its surrounding soil by accumulation of heat series soil heat exchanger (2); Carry out solar energy low-temperature heat power generation to the surrounding soil accumulation of heat of accumulation of heat series soil heat exchanger (2) in, get cold and supply with user by the 3rd heat exchanger (6) by cooling series soil heat exchanger (3);
this system runs on described solar energy thermal-power-generating soil thermal storage-earth source heat pump cooling pattern, this mode operation is in the cooling middle and later periods, and cooling series buried tube heat exchanger surrounding soil temperature is higher, does not reach cooling requirement, or user's refrigeration duty is larger, the direct cooling of soil is difficult to meet the demands, now, open booster pump (10), the first circulating pump (11), the second circulating pump (12), the 3rd circulating pump (13), the 4th circulating pump (14), the first valve (15), the 3rd valve (17), the 6th valve (20), the 9th valve (23), close all the other valves, now, solar energy low-temperature heat power generation device institute generated energy is used for driving the first circulating pump (11), the second circulating pump (12), the 3rd circulating pump (13), the 4th circulating pump (14), unnecessary electric weight deposits in electrical storage device (24), for other household electricity, low-temperature heat power generating device condensation heat stores in its surrounding soil by accumulation of heat series soil heat exchanger (2), carry out solar energy low-temperature heat power generation to the surrounding soil accumulation of heat of accumulation of heat series soil heat exchanger (2) in, utilize cooling series soil heat exchanger (3) get cold-working be the low-temperature receiver of ground-source heat pump cold-hot water machine group (9) to user's cooling, condensation heat stores in cooling series soil heat exchanger (3) surrounding soil,
this system runs on described solar energy direct heating pattern, this mode operation in In The Initial Period Of Heating or heating user's thermic load in latter stage hour, if solar thermal collector (1) heat-collecting capacity can meet separately heating demand, open the first circulating pump (11), the 4th circulating pump (14), the 7th valve (21), the 8th valve (22), close all the other valves, the heat that solar thermal collector (1) is collected is directly supplied with user by the 3rd heat exchanger (6);
this device runs on described solar energy-Heating by Ground Source Heat Pump pattern, this mode operation is heating mid-term, when solar thermal collector can not meet separately heating demand, start ground-source heat pump cold-hot water machine group (9) auxiliary heating, open the first circulating pump (11), the second circulating pump (12), the 3rd circulating pump (13), the 4th circulating pump (14), the second valve (16), the 4th valve (18), the 6th valve (20), the 7th valve (21), the 8th valve (22), the 9th valve (23), close all the other valves, heat with solar energy and earth source heat pump, cold is stored at accumulation of heat series soil heat exchanger (2) simultaneously, in cooling series soil heat exchanger (3) surrounding soil,
this device runs on described Heating by Ground Source Heat Pump pattern, this mode operation is at heating period night, when a cloudy snow day solar thermal collector can not be used for heating, open the second circulating pump (12), the 3rd circulating pump (13), the 4th circulating pump (14), the second valve (16), the 4th valve (18), the 6th valve (20), the 9th valve (23), close all the other valves, utilize accumulation of heat series soil heat exchanger (2), cooling series soil heat exchanger (3) heat-obtaining from its surrounding soil, low-temperature heat source as ground-source heat pump cold-hot water machine group (9) heats to user, cold is stored at accumulation of heat series soil heat exchanger (2) simultaneously, in cooling series soil heat exchanger (3) surrounding soil.
CN201410297229.6A 2014-06-28 2014-06-28 A kind of seasonal storage solar energy low-temperature heat power generation composite ground source heat pump system CN104061717B (en)

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