CN104061717B - A kind of seasonal storage solar energy low-temperature heat power generation composite ground source heat pump system - Google Patents
A kind of seasonal storage solar energy low-temperature heat power generation composite ground source heat pump system Download PDFInfo
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- CN104061717B CN104061717B CN201410297229.6A CN201410297229A CN104061717B CN 104061717 B CN104061717 B CN 104061717B CN 201410297229 A CN201410297229 A CN 201410297229A CN 104061717 B CN104061717 B CN 104061717B
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- Y—GENERAL 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
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Abstract
A kind of seasonal storage solar energy low-temperature heat power generation composite ground source heat pump system, is made up of solar thermal collector, ground heat exchanger, the first heat exchanger, the second heat exchanger, the 3rd heat exchanger, booster pump, decompressor, generator, ground-source heat pump cold-hot water machine group, electrical storage device etc.Described first heat exchanger, the second heat exchanger, booster pump, decompressor, generator form Organic Rankine Cycle low-temperature heat power generating device; Described solar thermal collector collects solar energy throughout the year, at non-heating period using the solar heat collected by the thermal source of the first heat exchanger as low-temperature heat power generating device, get cold from soil by accumulation of heat series soil heat exchanger, by the second heat exchanger and the low-temperature receiver as low-temperature heat power generating device, condensation heat is stored in soil.This system is applicable to severe cold area civil buildings and office building object, is specially adapted to the area that severe cold area is comparatively far away apart from central heating network pipeline, atmospheric environment is required to strict and frequent power-off.
Description
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 comparatively far away apart from central heating heat pipeline, atmospheric environment is required to strict often 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 the fast development of urban architecture brings huge development potentiality to the application of earth-source hot-pump system in building heating ventilation air-conditioning system.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 be used alone earth-source hot-pump system to heat, air-conditioning, inconsistent to soil heat-obtaining and concurrent heating of system will certainly be caused, the soil moisture around soil heat exchanger will decline year by year, after long-play, Soil Temperature Field around buried tube heat exchanger 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 that heat exchanger surrounding soil temperature field take year as the cycle, ensure the Effec-tive Function of source pump, must to soil additional heat.Solar energy is inexhaustible, the nexhaustible energy; the solar heat utilizing solar thermal collector to collect carries out concurrent heating to soil; interval carries out heating as thermal source is simultaneously a well selection; although concurrent heating process only runs circulating pump; but still will consume certain electric energy, if there is the loss of power accident, water pump cannot normally work; often can make that solar energy heating actuator temperature is too high causes 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, employing Organic Rankine Cycle generates electricity, to drive accumulation of heat circulating pump, cooling circulating pump etc., making this system can realize zero energy consumption accumulation of heat, the heat collector failure problems caused because having a power failure can also being avoided simultaneously to occur.Compared with traditional solar energy low-temperature heat power generation system, system that employs the soil heat sink that temperature is lower, more stable, 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, the arrangement achieves solar energy, thin solum heat energy efficiency utilization, system architecture is compact, is convenient to install, and runs and controls 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, first heat exchanger 4, 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, first circulating pump 11, 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 through the hot side entrance of the first valve 15 with the first heat exchanger 4; 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 port of the first heat exchanger 4 is connected through the hot side entrance of decompressor 7 with the second heat exchanger 5; The hot side outlet of the second described heat exchanger 5 is connected through the cold side input port of booster pump 10 with the first heat exchanger 4; The cold side outlet port of the second heat exchanger 5 is connected through the entrance of the 3rd valve 17 with accumulation of heat series soil heat exchanger 2; The outlet of described accumulation of heat series soil heat exchanger 2 is connected through the cold side input port of the second circulating pump 12 with the second heat exchanger 5; 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; Described ground-source heat pump cold-hot water machine group 9 is connected with the entrance of accumulation of heat series soil heat exchanger 2 through the 6th valve 20, the 4th valve 18 for vaporizer side chilled water outlet during thermal condition; Ground-source heat pump cold-hot water machine group 9 is connected through the outlet of the second valve 16, second circulating pump 12 with accumulation of heat series soil heat exchanger 2 for vaporizer side chilled water inlet during thermal condition; Ground-source heat pump cold-hot water machine group 9 is connected through the entrance of the 6th valve 20 with cooling series soil heat exchanger 3 for vaporizer side chilled water outlet during thermal condition; Ground-source heat pump cold-hot water machine group 9 is connected through the outlet of the 3rd circulating pump 13 with cooling series soil heat exchanger 3 for vaporizer side chilled water inlet during thermal condition; Ground-source heat pump cold-hot water machine group 9 is connected with the water supply line of user through the 9th valve 23, the 4th circulating pump 14 for condenser side coolant outlet during thermal condition; Ground-source heat pump cold-hot water machine group 9 is connected with the water return pipeline of user for condenser side cooling water inlet during thermal condition; 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, first circulating pump 11; The user side inlet of the 3rd heat exchanger 6 is connected with the water supply line of user through the 4th circulating pump 14; User's side outlet of the 3rd heat exchanger 6 is connected with the water return pipeline of user 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: the first described 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 powered respectively to accumulation of heat circulating pump, cooling circulating pump and 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: the first described 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 bottoming cycle, and organic working medium can be adopted 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 exit fluid temperature is higher than 80 DEG C, can be high temperature heat collector, middle high temperature heat collector, middle low-temperature heat collection device, light-focusing type, vacuum tube type, flat plate collector can be adopted.
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 when non-heating period or heating period system stop heating, the solar heat collected by solar thermal collector passes to organic working medium by the first heat exchanger heat, promote decompressor acting, electrical power generators, institute's generated energy is for driving the first circulating pump, unnecessary electricity is stored in electrical storage device, and for other household electricity, low-temperature heat power generating device condensation heat is stored in accumulation of heat series soil heat exchanger by the second heat exchanger.
solar energy thermal-power-generating soil thermal storage-soil supplying cold directly pattern, 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 for driving the first circulating pump, the second circulating pump, the 3rd circulating pump, the 4th circulating pump, unnecessary electricity is stored in electrical storage device, and for other household electricity, low-temperature heat power generating device condensation heat is stored 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 while, got cold by cooling series soil heat exchanger and supplied user by the 3rd heat exchanger.
solar energy thermal-power-generating soil thermal storage-earth source heat pump cooling mode, 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 demand, or user's refrigeration duty is larger, soil supplying cold directly is difficult to meet the demands, solar energy low-temperature heat power generation device institute generated energy is for driving the first circulating pump, second circulating pump, 3rd circulating pump, 4th circulating pump, unnecessary electricity is stored in electrical storage device, for other household electricity, low-temperature heat power generating device condensation heat is stored 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 while, 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 The Initial Period Of Heating or heating latter stage, user's thermic load was less time, if solar thermal collector heat-collecting capacity can meet heating demands separately, the heat collected by solar thermal collector directly supplies 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 demands, 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 when heating period night, cloudy snow sky 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, is stored by cold 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, and rely on the coupling of various energy resources, energy saving of system improves greatly;
(2) have complementary advantages, realize soil heat balance.By solar energy low-temperature heat power generation hold over system and earth-source hot-pump system compound, improve temperature and the source pump heating effect in winter of soil, when can ensure earth-source hot-pump system longtime running, the thermal balance of ground heat exchanger surrounding soil;
(3) reliable, realize zero cooling, accumulation of heat energy consumption.Soil and solar energy is utilized 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, when electricity also has the household electricity that also can be used as supplying user during residue, achieve cooling, accumulation of heat zero energy consumption, avoid because power-off causes collecting system overheated simultaneously, and then the hidden danger causing collecting system to damage.
Accompanying drawing explanation
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 solar energy thermal-power-generating of the present invention soil thermal storage-soil supplying cold directly;
Fig. 4 is the structural representation of solar energy thermal-power-generating of the present invention soil thermal storage-earth source heat pump cooling;
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 of the present invention heating;
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-first heat exchanger, 5-second heat exchanger, 6-the 3rd heat exchanger, 7-decompressor, 8-generator, 9-ground source heat pump hot water unit, 10-booster pump, 11-first circulating pump, 12-second circulating pump, 13-the 3rd circulating pump, 14-the 4th circulating pump, 15-first valve, 16-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, first heat exchanger 4, 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, first circulating pump 11, 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 through the hot side entrance of the first valve 15 with the first heat exchanger 4; 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 port of the first heat exchanger 4 is connected through the hot side entrance of decompressor 7 with the second heat exchanger 5; The hot side outlet of the second described heat exchanger 5 is connected through the cold side input port of booster pump 10 with the first heat exchanger 4; The cold side outlet port of the second heat exchanger 5 is connected through the entrance of the 3rd valve 17 with accumulation of heat series soil heat exchanger 2; The outlet of described accumulation of heat series soil heat exchanger 2 is connected through the cold side input port of the second circulating pump 12 with the second heat exchanger 5; 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; Described ground-source heat pump cold-hot water machine group 9 is connected with the entrance of accumulation of heat series soil heat exchanger 2 through the 6th valve 20, the 4th valve 18 for vaporizer side chilled water outlet during thermal condition; Ground-source heat pump cold-hot water machine group 9 is connected through the outlet of the second valve 16, second circulating pump 12 with accumulation of heat series soil heat exchanger 2 for vaporizer side chilled water inlet during thermal condition; Ground-source heat pump cold-hot water machine group 9 is connected through the entrance of the 6th valve 20 with cooling series soil heat exchanger 3 for vaporizer side chilled water outlet during thermal condition; Ground-source heat pump cold-hot water machine group 9 is connected through the outlet of the 3rd circulating pump 13 with cooling series soil heat exchanger 3 for vaporizer side chilled water inlet during thermal condition; Ground-source heat pump cold-hot water machine group 9 is connected with the water supply line of user through the 9th valve 23, the 4th circulating pump 14 for condenser side coolant outlet during thermal condition; Ground-source heat pump cold-hot water machine group 9 is connected with the water return pipeline of user for condenser side cooling water inlet during thermal condition; 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, first circulating pump 11; The user side inlet of the 3rd heat exchanger 6 is connected with the water supply line of user through the 4th circulating pump 14; User's side outlet of the 3rd heat exchanger 6 is connected with the water return pipeline of user through the 8th valve 22; Fig. 2-Fig. 7 is respectively the structural representation of different operational mode of the present invention.
Below in conjunction with accompanying drawing, use procedure of the present invention is described:
As shown in Figure 2, this is solar energy thermal-power-generating soil thermal storage pattern, this mode operation is when non-heating period or heating period system stop heating, open booster pump 10, first circulating pump 11, second circulating pump 12, first valve 15, 3rd valve 17, close all the other valves, the solar heat collected by solar thermal collector 1 passes to organic working medium by the first heat exchanger 4 heat, promote decompressor 7 to do work, generator 8 generates electricity, institute's generated energy is for driving the first circulating pump 11, unnecessary electricity is stored in electrical storage device 24, for other household electricity, low-temperature heat power generating device condensation heat is stored in accumulation of heat series soil heat exchanger 2 by the second heat exchanger 5.
As shown in Figure 3, this is solar energy thermal-power-generating soil thermal storage-soil supplying cold directly pattern, 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, first circulating pump 11, second circulating pump 12, the 3rd circulating pump 13, the 4th circulating pump 14, 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 for driving the first circulating pump 11, second circulating pump 12, the 3rd circulating pump 13, the 4th circulating pump 14, unnecessary electricity is stored in electrical storage device 24, for other household electricity, low-temperature heat power generating device condensation heat is stored in its surrounding soil by accumulation of heat series soil heat exchanger 2.Carry out solar energy low-temperature heat power generation to the accumulation of heat of accumulation of heat series soil heat exchanger 2 surrounding soil while, got cold by cooling series soil heat exchanger 3 and supplied user by the 3rd heat exchanger 6.
As shown in Figure 4, this is solar energy thermal-power-generating and accumulation of heat-earth source heat pump supplying cold directly pattern, 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 demand, or user's refrigeration duty is comparatively large, soil supplying cold directly is difficult to meet the demands.Now, open booster pump 10, first circulating pump 11, second circulating pump 12, the 3rd circulating pump 13, the 4th circulating pump 14, 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 for driving the first circulating pump 11, second circulating pump 12, the 3rd circulating pump 13, the 4th circulating pump 14, unnecessary electricity is stored in electrical storage device 24, for other household electricity, low-temperature heat power generating device condensation heat is stored in its surrounding soil by accumulation of heat series soil heat exchanger 2.Carry out solar energy low-temperature heat power generation to the accumulation of heat of accumulation of heat series soil heat exchanger 2 surrounding soil while, 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 soil.
As shown in Figure 5, this is solar energy direct heating pattern, this mode operation In The Initial Period Of Heating or heating latter stage, user's thermic load was less time, if solar thermal collector 1 heat-collecting capacity can meet heating demands separately, 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 collected by solar thermal collector 1 directly supplies 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 demands, start ground-source heat pump cold-hot water machine group 9 auxiliary heating, open the first circulating pump 11, second circulating pump 12, 3rd circulating pump 13, 4th circulating pump 14, second valve 16, 4th valve 18, 6th valve 20, 7th valve 21, 8th valve 22, 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.
As shown in Figure 7, this is earth source heat pump direct heating pattern, this mode operation is at heating period night, when cloudy snow sky solar thermal collector can not be used for heating, open the second circulating pump 12, 3rd circulating pump 13, 4th circulating pump 14, second valve 16, 4th valve 18, 6th valve 20, 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.
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 bottoming cycle 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 solar thermal collector (1), accumulation of heat series soil heat exchanger (2), cooling series soil heat exchanger (3), first heat exchanger (4), second heat exchanger (5), 3rd heat exchanger (6), decompressor (7), generator (8), ground-source heat pump cold-hot water machine group (9), booster pump (10), first circulating pump (11), second circulating pump (12), 3rd circulating pump (13), 4th circulating pump (14), electrical storage device (24), the outlet of described solar thermal collector (1) is connected through the hot side entrance of the first valve (15) with the first heat exchanger (4), the hot side outlet of described the first heat exchanger (4) is connected through the import of the first circulating pump (11) with solar thermal collector (1), the cold side outlet port of the first heat exchanger (4) is connected through the hot side entrance of decompressor (7) with the second heat exchanger (5), the hot side outlet of described the second heat exchanger (5) is connected through the cold side input port of booster pump (10) with the first heat exchanger (4), the cold side outlet port of the second heat exchanger (5) is connected through the entrance of the 3rd valve (17) with accumulation of heat series soil heat exchanger (2), the outlet of described accumulation of heat series soil heat exchanger (2) is connected through the cold side input port of the second circulating pump (12) with the second heat exchanger (5), 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), described ground-source heat pump cold-hot water machine group (9) is connected with the entrance of accumulation of heat series soil heat exchanger (2) through the 6th valve (20), the 4th valve (18) for vaporizer side chilled water outlet during thermal condition, ground-source heat pump cold-hot water machine group (9) is connected with the outlet of accumulation of heat series soil heat exchanger (2) through the second valve (16), the second circulating pump (12) for vaporizer side chilled water inlet during thermal condition, ground-source heat pump cold-hot water machine group (9) is connected through the entrance of the 6th valve (20) with cooling series soil heat exchanger (3) for vaporizer side chilled water outlet during thermal condition, ground-source heat pump cold-hot water machine group (9) is connected through the outlet of the 3rd circulating pump (13) with cooling series soil heat exchanger (3) for vaporizer side chilled water inlet during thermal condition, ground-source heat pump cold-hot water machine group (9) is connected with the water supply line of user through the 9th valve (23), the 4th circulating pump (14) for condenser side coolant outlet during thermal condition, ground-source heat pump cold-hot water machine group (9) is connected with the water return pipeline of user for condenser side cooling water inlet during thermal condition, 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 the water supply line of user through the 4th circulating pump (14), user's side outlet of the 3rd heat exchanger (6) is connected with the water return pipeline of user 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 powered respectively to the second circulating pump (12), the 3rd circulating pump (13) and 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) and generator (8) form low-temperature heat power generating device, this device course of work adopts organic Rankine bottoming cycle, and the organic working medium of employing comprises R134a, R22, R245fa, R407c, R123.
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) exit fluid temperature is higher than 80 DEG C, can be high temperature heat collector, middle high temperature heat collector, middle low-temperature heat collection device, light-focusing type, vacuum tube type, flat plate collector can be adopted.
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:
(1) this system cloud gray model is in solar energy thermal-power-generating soil thermal storage pattern, this mode operation is when non-heating period or heating period system stop heating, open booster pump (10), first circulating pump (11), second circulating pump (12), first valve (15), 3rd valve (17), close all the other valves, the solar heat collected by solar thermal collector (1) passes to organic working medium by the first heat exchanger (4) heat, promote decompressor (7) acting, generator (8) generates electricity, institute's generated energy is for driving the first circulating pump (11), unnecessary electricity is stored in electrical storage device (24), for other household electricity, generator (8) condensation heat is stored in accumulation of heat series soil heat exchanger (2) by the second heat exchanger (5).
(2) this system cloud gray model is in solar energy thermal-power-generating soil thermal storage-soil supplying cold directly pattern, 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, generator (8) institute generated energy is for driving the first circulating pump (11), the second circulating pump (12), the 3rd circulating pump (13), the 4th circulating pump (14), unnecessary electricity is stored in electrical storage device (24), for other household electricity, generator (8) condensation heat is stored in its surrounding soil by accumulation of heat series soil heat exchanger (2).Carry out solar energy low-temperature heat power generation to accumulation of heat series soil heat exchanger (2) surrounding soil accumulation of heat while, by cooling series soil heat exchanger (3) get cold and by the 3rd heat exchanger (6) supply user.
(3) this system cloud gray model is in solar energy thermal-power-generating soil thermal storage-earth source heat pump cooling mode, 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 demand, or user's refrigeration duty is comparatively large, and soil supplying cold directly is difficult to meet the demands.Now, open booster pump (10), first circulating pump (11), second circulating pump (12), 3rd circulating pump (13), 4th circulating pump (14), first valve (15), 3rd valve (17), 6th valve (20), 9th valve (23), close all the other valves, now, generator (8) institute generated energy is for driving the first circulating pump (11), second circulating pump (12), 3rd circulating pump (13), 4th circulating pump (14), unnecessary electricity is stored in electrical storage device (24), for other household electricity, generator (8) condensation heat is stored in its surrounding soil by accumulation of heat series soil heat exchanger (2).Carry out solar energy low-temperature heat power generation to accumulation of heat series soil heat exchanger (2) surrounding soil accumulation of heat while, 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 store cooling series soil heat exchanger (3) surrounding soil in.
(4) this system cloud gray model is in solar energy direct heating pattern, this mode operation In The Initial Period Of Heating or heating latter stage, user's thermic load was less time, if solar thermal collector (1) heat-collecting capacity can meet heating demands separately, 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 collected by solar thermal collector (1) directly supplies user by the 3rd heat exchanger (6).
(5) this plant running is in 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 demands, start ground-source heat pump cold-hot water machine group (9) auxiliary heating, open the first circulating pump (11), second circulating pump (12), 3rd circulating pump (13), 4th circulating pump (14), second valve (16), 4th valve (18), 6th valve (20), 7th valve (21), 8th valve (22), 9th valve (23), close all the other valves, heat with solar energy and earth source heat pump, cold is stored in accumulation of heat series soil heat exchanger (2) simultaneously, in cooling series soil heat exchanger (3) surrounding soil.
(6) this plant running is in Heating by Ground Source Heat Pump pattern, this mode operation is at heating period night, when cloudy snow sky solar thermal collector can not be used for heating, open the second circulating pump (12), 3rd circulating pump (13), 4th circulating pump (14), second valve (16), 4th valve (18), 6th valve (20), 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 in accumulation of heat series soil heat exchanger (2) simultaneously, in cooling series soil heat exchanger (3) surrounding soil.
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| CN106196714B (en) * | 2016-08-20 | 2019-03-05 | 河北工业大学 | Solar energy-ground source heat pump with double buried nest of tubes couples energy supplying system |
| CN106382767B (en) * | 2016-08-30 | 2019-03-19 | 湖南中大经纬地热开发科技有限公司 | The underground heat utilization system in the poor region of groundwater run off |
| CN107131546A (en) * | 2017-05-31 | 2017-09-05 | 天津大学 | Hot-water type solar and superficial layer geothermal energy cogeneration of heat and power integral system and operation method |
| CN108105832A (en) * | 2017-12-29 | 2018-06-01 | 山西易通环能科技集团有限公司 | One kind is based on distributed solar energy heat utilization system and method |
| CN109028271A (en) * | 2018-07-11 | 2018-12-18 | 北京石油化工学院 | A kind of cooling heating and power generation system |
| CN109059149A (en) * | 2018-07-17 | 2018-12-21 | 山东建筑大学 | Solar energy-ground thermal energy photo-thermal electricity composite energy resource system and its application |
| CN110195991B (en) * | 2019-07-03 | 2024-05-24 | 国家能源大规模物理储能技术（毕节）研发中心 | Cross-season hybrid heat storage cold and hot combined supply system |
| CN113983544A (en) * | 2021-10-25 | 2022-01-28 | 珠海格力电器股份有限公司 | Operation control method and system and solar heat pump hot water system |
| CN114383184A (en) * | 2021-12-24 | 2022-04-22 | 日出东方控股股份有限公司 | Efficient large-area flat-plate solar collector and solar heating system |
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