CN101403521A - Solar energy absorption type refrigeration and ground source heat pump coupling combined supplying system - Google Patents
Solar energy absorption type refrigeration and ground source heat pump coupling combined supplying system Download PDFInfo
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- CN101403521A CN101403521A CNA2008101758849A CN200810175884A CN101403521A CN 101403521 A CN101403521 A CN 101403521A CN A2008101758849 A CNA2008101758849 A CN A2008101758849A CN 200810175884 A CN200810175884 A CN 200810175884A CN 101403521 A CN101403521 A CN 101403521A
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
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Abstract
The invention relates to a solar suction-typed cooling and ground source heat pump coupling and combined supplying system which comprises a solar heat collector, a buried heat exchanger as well as an evaporator, a compressor and a condenser that are connected end to end, and has the following structure characteristics: the solar heat collector is serially connected with a heat-accumulating hot water tank by a first inlet and outlet pipe bank, the heat-accumulating hot water tank is serially connected with a suction-typed cooling machine set by a second inlet and outlet pipe bank, the suction-typed cooling machine set is serially connected with a cooling tower by a third inlet and outlet pipe bank, the suction-typed cooling machine set is communicated with an air conditioner inside an air conditioning room by a fourth inlet and outlet pipe bank, the buried heat exchanger is communicated with the condenser by a fifth inlet and outlet pipe bank, and the evaporator is communicated with the air conditioner inside the air conditioning room by a sixth inlet and outlet pipe bank; water pumps, reversing valves and/or electromagnetic valves are arranged between the first, the second, the third, the fourth, the fifth and the sixth inlet and outlet pipe banks or in each pipe tank.
Description
Technical field
The present invention relates to a kind of solar energy absorption type refrigeration and ground source heat pump coupling combined supplying system of multi-state.
Background technology
In recent years along with Increase of population and expanding economy, non-renewable energy resources consumption is quickened, finiteness and environmental protection pressure in view of the conventional energy resource supply, people pay attention to the development and use of new and renewable sources of energy further, solar energy and geothermal energy are main clean energy resource and regenerative resources, in State Commission for Restructuring the Economic Systems has been listed research and development solar energy and renewable energy technologies by the Chinese government since " six or five ", promoted the development of correlation technique and industry.
The summer air-conditioning electricity consumption occupies quite great proportion in whole power consumption, use the working medium of traditional refrigeration modes to adopt freon etc. artificial synthetic, can cause global greenhouse effect and to the destruction of atmospheric ozone layer.
Solar thermal collector is that Penrod proposed first in 1956 with the imagination of burying ground coil pipe combination.1962, Penrod described the fundamental diagram of solar energy-ground source heat pump unit.1969, provided its design process again, the design that comprises solar thermal collector, buries the ground coil pipe.
Since the 1950's, China has just begun the exploratory development to heat pump techniques, but in the development that mainly concentrates on air source heat pump and water resource heat pump and the development and use, and to the research of solar energy-ground source heat pump unit seldom.
University Of Tianjin has carried out solar energy-soil combined type earth source heat pump unit experimental study first, has obtained the performance parameter such as heat input rate, coefficient of heat supply under the different service conditions.Harbin Institute of Technology has carried out analog study, has determined solar energy fraction and heat collector capacity from the angle of energy utilization efficiency cold district solar energy-soil source heat pump unit heating operation operating mode.Qingdao Technological University has carried out numerical simulation calculation to three kinds of patterns of solar energy-soil combined type earth source heat pump cooperation.Hebei University Of Engineering has set up solar energy-soil combined type earth source heat pump unit experimental provision and has carried out the experimental study of cooperation in 2004, the cooperation pattern is hot water storage tank accumulation of heat on daytime, the auxiliary heating in evening auxiliary heating and accumulation of heat limit, hot water storage tank limit.
With the combination of technology such as solar energy-Re, light-electricity, geothermal heat pump air-conditioner and building, combine together, build up the novelty building of comprehensive utilization new forms of energy (as solar energy or geothermal energy etc.); Adopt the GC-MS of solar heat-preservation and earth source heat pump to realize freeze summer winter heating, four seasons hot-water supply, to reduce the capability of energy dissipation of building, integrated other new forms of energy and power-saving technology or the like will be the development trends of solar energy-ground source heat pump technology and product.New forms of energy such as solar energy, geothermal energy provide energy for building more than 80%, and energy savings expense 82% has the significant social economic and environmental benefit.The expert of 15 countries of the 1980's International Energy Agency tissue unites tackling key problem to the solar building technology, and American-European developed country builds comprehensive utilization solar energy demonstration building one after another.Test shows, the solar building fractional energy savings is about about 75%, has become one of the most promising field.
Conventional solar energy and earth source heat pump combined operation system are designed to adopt summer earth source heat pump unit refrigeration more, adopt solar heat pump and earth source heat pump combined heat winter.But the southern area in China, building required refrigeration duty in summer will be much larger than required thermic loads in winter, and source pump often all be heating capacity greater than refrigerating capacity, the heating capacity of source pump is 1.1～1.3 times of refrigerating capacity usually.It causes when the machine group selection, if by refrigeration duty Standard Selection unit in summer, can cause the thermic load demand of the heating capacity of unit well beyond building; And if according to thermic load Standard Selection in winter, the not enough situation of refrigerating capacity in summer then can appear.
A kind of Solar energy-ground source jointly heating, electricity supplying and refrigerating system and operating method thereof is disclosed among the Chinese patent literature CN1987211A, the solar energy-ground source united heat supply, hot water supply, power supply and refrigerating system comprises electric power system, solar energy heating system, water system, earth source heat pump unit; It is characterized in that solar energy heating system couples together by heat storage tank and water system, solar energy heating system is realized in parallel with the earth source heat pump unit by two reversal valves between these two systems or is connected, electric power system links to each other with each system respectively, and solar energy heating system is connected with thermoelectric cell by auxiliary heater with electric power system.Electric power system is by thermoelectric cell, battery, inverter, double-point double-throw switch, synchro switch, switch, thermal relay, ammeter, other electrical appliance is formed, thermoelectric cell and double-point double-throw switch, diode, the battery series connection, power supply after all electrical appliances are changed through inverter by battery in the electric power system, two to pump, thermal relay, insert in the electric power system after the synchro switch parallel connection, wherein two of thermal relay inputs are connected to B point in the outlet A point of solar energy heat collection pipe and the heat storage tank, auxiliary heater respectively, compressor, water source heat pump units and other electrical appliance are connected respectively and are inserted in the electric power system behind the switch.Solar energy heating system is made up of to pump, room solar energy heat collection pipe, thermal relay, heat storage tank, auxiliary heater, safety valve, room heating adjuster, two, wherein two to pump, water circulation system of solar energy heat collection pipe composition, the solar energy heat collection pipe upper surface is one deck thermoelectric cell, the face be close to thermoelectric cell in the solar energy heat collection pipe adopt the printing opacity diathermancy all preferably material make, other faces are the same with the material of general solar energy heat collection pipe, safety valve is installed on the heat storage tank, and auxiliary heater is installed on the heat storage tank.The earth source heat pump unit by compressor, reversal valve, choke valve, bury ground heat exchanger, water source heat pump units and form, choke valve is installed in heat storage tank and buries between the ground heat exchanger, compressor is installed in and buries between ground heat exchanger and the water source heat pump units, and controls refrigeration or heating by reversal valve.Water system is made up of cold water supply, heat storage tank, blender, and cold water supply one end links to each other with blender through heat storage tank, and an end directly links to each other with blender.This solar energy-ground source united heat supply, hot water supply, power supply and refrigerating system complex structure, cost of manufacture are high, operating cost is also than higher, make us not too satisfied.
Summary of the invention
Purpose of the present invention aims to provide a kind of underground water energy resource and solution earth source heat pump simple and reasonable, that utilize regenerative resource, annual energy-efficient operation, protection earth source heat pump and thermally distinguishes in the warm summer in winter; summer in winter load does not seriously match, the multi-state solar energy absorption type refrigeration and the ground source heat pump coupling combined supplying system of earth source heat pump evaporating temperature and problems such as the condensation temperature fluctuation is big, the source pump operational efficiency is lower and solar energy utilizes intermittence and unreliability, to overcome weak point of the prior art.
A kind of solar energy absorption type refrigeration and ground source heat pump coupling combined supplying system by this purpose design, comprise solar thermal collector, buried heat exchanger, and end to end evaporimeter, compressor and condenser, its architectural feature is that solar thermal collector passes through the first turnover Guan Zuyu heat accumulation boiler series connection, the heat accumulation boiler is by the second turnover Guan Zuyu absorption refrigeration unit series connection, the absorption refrigeration unit is by the 3rd turnover Guan Zuyu cooling tower series connection, the absorption refrigeration unit communicates by the air-conditioner in the 4th turnover Guan Zuyu air-conditioned room, buried heat exchanger communicates by the 5th turnover Guan Zuyu condenser, and evaporimeter communicates by the air-conditioner in the 6th turnover Guan Zuyu air-conditioned room; The first turnover pipe group, the second turnover pipe group, the 3rd turnover pipe group, the 4th turnover pipe group, the 5th turnover pipe group and the 6th turnover pipe group are provided with water pump, reversal valve and/or magnetic valve each other or in each pipe group.
The described first turnover pipe group comprises first pipe and second pipe, and solar thermal collector and heat accumulation boiler constitute circulation after being communicated with respectively by first pipe and second pipe, and first water pump is serially connected on second pipe.
The described second turnover pipe group comprises the 3rd pipe and the 4th pipe, and heat accumulation boiler and absorption refrigeration unit constitute circulation after being communicated with respectively by the 3rd pipe and the 4th pipe, and second water pump is serially connected in the 3rd pipe; The 4th turnover pipe group comprises the 5th pipe and the 6th pipe, and the air-conditioner in absorption refrigeration unit and the air-conditioned room constitutes circulation after communicating respectively by the 5th pipe and the 6th pipe, and the 3rd magnetic valve is serially connected in the 6th pipe; The 6th turnover pipe group comprises the 15 pipe, the 16 pipe, the 23 pipe and the 24 pipe; The a end and the c end of the 3rd reversal valve are serially connected in the 3rd pipe, one end of the 15 pipe communicates with the b of the 3rd reversal valve end, the other end of the 15 pipe communicates with a end of the 8th reversal valve, one end of the 23 pipe communicates with the c of the 8th reversal valve end, the other end of the 23 pipe communicates with the return pipe of evaporimeter, one end of the 24 pipe communicates with the outlet pipe of evaporimeter, the other end of the 24 pipe communicates with the 21 pipe, promptly the 23 pipe and the 24 pipe communicate with the return pipe and the outlet pipe of evaporimeter respectively, carry out exchange heat.
Be serially connected with the 6th magnetic valve in described the 15 pipe, one end of the 6th magnetic valve is communicated with the b end of the 3rd reversal valve, the other end of the 6th magnetic valve is communicated with a end of the 8th reversal valve, the b end of the 8th reversal valve communicates with an end of the 21 pipe, and the other end of the 21 pipe communicates with the 6th pipe by the 5th water pump; Be serially connected with second magnetic valve and the 5th magnetic valve in the 16 pipe, one end of second magnetic valve communicates with the 4th pipe, the other end of second magnetic valve communicates with an end of the 5th magnetic valve, the other end of the 5th magnetic valve communicates with the 5th pipe, one end of first magnetic valve is serially connected between a end of the other end of the 6th magnetic valve and the 8th reversal valve, and the other end of first magnetic valve is serially connected between the other end and the 5th pipe of the 5th magnetic valve; The 5th turnover pipe group comprises the 11 pipe and the 12 pipe, after one and the above buried heat exchanger parallel connection, with the water inlet pipe and water outlet pipe of condenser by the 11 pipe and the 12 pipe respectively after the connection, constitute circulation, wherein, the 12 pipe, the water inlet pipe and water outlet pipe of condenser and the 11 pipe are communicated with successively, carry out exchange heat, the a end and the b end of first reversal valve are serially connected in the 5th pipe, the a end and the b end of the 7th reversal valve are serially connected in the 12 pipe, the a end of the 7th reversal valve communicates with the buried heat exchanger after the parallel connection, the c end of first reversal valve communicates with the 7th reversal valve c end by the 9th pipe, and the tenth pipe one end is serially connected in the 6th pipe, and its other end is serially connected between the b end and the 12 pipe of the 7th reversal valve, the 7th magnetic valve is serially connected in the middle of the tenth pipe, and the b end and a end of the 4th reversal valve are serially connected in the 11 pipe.
Described the 3rd turnover pipe group comprises the 7th pipe and the 8th pipe, after absorption refrigeration unit and cooling tower communicate respectively by the 7th pipe and the 8th pipe, constitute circulation, the b end and a end of second reversal valve are serially connected in the 8th pipe, the 3rd water pump one end communicates with a end of second reversal valve, its other end communicates with cooling tower, the b end and a end of the 5th reversal valve are serially connected in the 11 pipe, the c of the 5th reversal valve end is communicated with the 7th pipe by the 20 pipe, and the c end of second reversal valve inserts between the b end of a end of the 4th reversal valve and the 5th reversal valve by the 19 pipe.
Be serially connected with the 4th water pump in described the 12 pipe, an end of the 4th check valve communicates with the b of the 7th reversal valve end, and its other end communicates with water inlet pipe one end of condenser, and the other end of the outlet pipe of condenser communicates with the 11 pipe.
The c end of described the 4th reversal valve inserts between second magnetic valve and the 5th magnetic valve by the 22 pipe.
Be provided with the 6th reversal valve between a end of described the 7th reversal valve and the buried heat exchanger, the b end of the 6th reversal valve communicates with buried heat exchanger, the a of the 6th reversal valve end communicates with a end of the 7th reversal valve, the c end of the 6th reversal valve by the 14 pipe insert in the 15 pipe, between the b of an end of the 6th magnetic valve and the 3rd reversal valve holds; Be provided with the 4th magnetic valve between the b end of the 4th reversal valve and the buried heat exchanger, between the b end that one termination of the 4th magnetic valve is gone into the 4th reversal valve and the buried heat exchanger, its other end by the 13 pipe be linked in the 15 pipe, between the b of an end of the 6th magnetic valve and the 3rd reversal valve holds.
Be provided with the hot and cold water tank between the air-conditioner in described absorption refrigeration unit and the air-conditioned room, the hot and cold water tank communicates with the 3rd magnetic valve one end by the 17 pipe, manages with air-conditioner in the air-conditioned room by the 18 to communicate.The hot and cold water tank is provided with the second switch of hot water valve externally is provided.
Described heat accumulation boiler is provided with first switch valve that hot water externally is provided.
The present invention is built together solar energy and earth source heat pump, and " learn from other's strong points to offset one's weaknesses, rationally supply " designs a cover manifold type new heat-supplying refrigeration system, this system not only have separately the characteristic of peculiar economy, environmental protection, also have tangible energy-saving and emission-reduction potentiality.
Summer, when temperature is higher, required air-conditioning cold flow is bigger, adopt solar energy cooling in parallel with earth source heat pump this moment, because earth source heat pump because of the condensing condition variation, causes refrigerating capacity to reduce, but this moment, the hot water temperature of solar thermal collector was higher, make the solar absorption refrigerating machine group produce bigger cold, be enough to remedy the cold that earth source heat pump reduces, satisfy the needs of maximum air conditioner load; When summer temperature not too high, required air-conditioning cold flow is little, and the hot water temperature of solar thermal collector can drive absorption refrigeration unit when work, adopt solar energy and ground source heat pump coupling combined supplying refrigeration this moment, the cold that utilizes the absorption refrigeration unit to produce absorbs the partial condensation heat of earth source heat pump, has reduced the heat that buried heat exchanger is discharged into soil; When temperature is low, required air-conditioning cold flow is less, adopt the independent cooling of earth source heat pump this moment, because of the hot water temperature of solar thermal collector low excessively, can not drive the work of absorption refrigeration unit, the absorption refrigeration unit is out of service, and the cooling water that utilizes this moment the cooling tower of absorption system to produce absorbs the partial condensation heat of earth source heat pump, to reduce the condensation heat load of buried heat exchanger.
In winter, when the hot water temperature who provides when solar thermal collector was higher, heating demand was provided by solar energy fully; When the hot water temperature of solar thermal collector does not reach heat supply temperature, by connecting or be coupled with earth source heat pump, can be with the heat transferred evaporimeter of heat collector, improve the coefficient of heat supply of unit, or transfer to underground storage, soil moisture field was recovered faster, can improve coefficient of heat supply again.
The present invention is fully studying on the basis of whole year operation operating mode and meteorological condition; the outstanding underground water energy resource of earth source heat pump of having protected; having solved earth source heat pump thermally distinguished in the warm summer in winter; summer in winter, load did not seriously match; earth source heat pump evaporating temperature and condensation temperature fluctuation are bigger; problems such as intermittence that the source pump operational efficiency is low and solar energy utilizes and unreliability; new type solar energy-earth source heat pump coupling principle is proposed; a kind of regenerative resource of utilizing is provided; the annual energy-efficient operation of energy is to the indoor co-feeding system and the method for operating of carrying out air-conditioning and the domestic hot-water being provided simultaneously.
Description of drawings
Fig. 1 is that one embodiment of the invention is at T 〉=T
AThe time the system works structural representation.
Fig. 2 is that the present invention is at T
A〉=T 〉=T
BThe time the system works structural representation.
Fig. 3 is that the present invention is at T＜T
BThe time the system works structural representation.
Fig. 4 is that the present invention is at T 〉=T
BThe time the system works structural representation.
Fig. 5 is that the present invention is at T
BSystem works structural representation during＞T 〉=40 ℃.
Fig. 6 is the system works structural representation during in 40 ℃＞T 〉=30 ℃ for the present invention.
Fig. 7 is the system works structural representation during in 30 ℃＞T 〉=15 ℃ for the present invention.
Fig. 8 is the system works structural representation during in 15 ℃＞T 〉=5 ℃ for the present invention.
Fig. 9 is the system works structural representation of the present invention when 5 ℃＞T.
Figure 10 is a system works situation summary sheet of the present invention.
Figure 11 is each reversal valve and the state table of magnetic valve under different operating modes among the present invention.
Among the figure: 1 is solar thermal collector, and 2 is first water pump, and 3 is the heat accumulation boiler, 4 is second water pump, and 5 are the absorption refrigeration unit, and 6 is the 3rd water pump, 7 is cooling tower, and 8 is the hot and cold water tank, and 9 is air-conditioned room, 10 is the 5th water pump, and 11 is compressor, and 12 is evaporimeter, 13 is expansion valve, and 14 is condenser, and 15 is the 4th water pump, 16 is buried heat exchanger, and 17 is first switch valve, and 18 is the second switch valve, 31 is first pipe, and 32 is the 5th pipe, and 33 is the 9th pipe, 34 is the tenth pipe, and 35 is the 6th pipe, and 36 is the 18 pipe, 37 is the 16 pipe, and 38 is the 21 pipe, and 39 is the 15 pipe, 40 is the 12 pipe, 41 is the 20 pipe, and 42 is the 19 pipe, and 43 is the 22 pipe, 44 is the 11 pipe, 45 is the 13 pipe, and 46 is the 14 pipe, and 47 is the 7th pipe, 48 is the 8th pipe, 49 is the 4th pipe, and 50 is the 3rd pipe, and 51 is second pipe, 52 is the 17 pipe, 53 is the 23 pipe, and 54 is the 24 pipe, and FI is first reversal valve, F2 is second reversal valve, F3 is the 3rd reversal valve, and F4 is the 4th reversal valve, and F5 is the 5th reversal valve, F6 is the 6th reversal valve, F7 is the 7th reversal valve, and F8 is the 8th reversal valve, and V1 is first magnetic valve, V2 is second magnetic valve, V3 is the 3rd magnetic valve, and V4 is the 4th magnetic valve, and V5 is the 5th magnetic valve, V6 is the 6th magnetic valve, and V7 is the 7th magnetic valve.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is further described.
Referring to Fig. 1-Fig. 9, this solar energy absorption type refrigeration and ground source heat pump coupling combined supplying system, comprise solar thermal collector 1, buried heat exchanger 16, and end to end evaporimeter 12, compressor 11 and condenser 14, solar thermal collector is by 3 series connection of the first turnover Guan Zuyu heat accumulation boiler, heat accumulation boiler 3 is by 5 series connection of the second turnover Guan Zuyu absorption refrigeration unit, absorption refrigeration unit 5 is by 7 series connection of the 3rd turnover Guan Zuyu cooling tower, absorption refrigeration unit 5 communicates by the air-conditioner in the 4th turnover Guan Zuyu air-conditioned room 9, buried heat exchanger 16 communicates by the 5th turnover Guan Zuyu condenser 14, and evaporimeter 12 communicates by the air-conditioner in the 6th turnover Guan Zuyu air-conditioned room; The first turnover pipe group, the second turnover pipe group, the 3rd turnover pipe group, the 4th turnover pipe group, the 5th turnover pipe group and the 6th turnover pipe group are provided with water pump, reversal valve and/or magnetic valve each other or in each pipe group.
The first turnover pipe group comprises first pipe, 31 and second pipe 51, and solar thermal collector 1 and heat accumulation boiler 3 constitute circulation after being communicated with respectively by first pipe, 31 and second pipe 51, and first water pump 2 is serially connected on second pipe 51.
The second turnover pipe group comprises the 3rd pipe the 50 and the 4th pipe 49, and heat accumulation boiler 3 and absorption refrigeration unit 5 constitute circulation after being communicated with respectively by the 3rd pipe the 50 and the 4th pipe 49, and second water pump 4 is serially connected in the 3rd pipe 50; The 4th turnover pipe group comprises the 5th pipe the 32 and the 6th pipe 35, and the air-conditioner in absorption refrigeration unit 5 and the air-conditioned room 9 constitutes circulation after communicating respectively by the 5th pipe the 32 and the 6th pipe 35, and the 3rd magnetic valve V3 is serially connected in the 6th pipe 35; The 6th turnover pipe group comprises the 15 pipe 39, the 16 pipe 37, the 23 pipe the 53 and the 24 pipe 54, the a end of the 3rd reversal valve F3 and c end are serially connected in the 3rd pipe 50, one end of the 15 pipe 39 communicates with the b of the 3rd reversal valve F3 end, the other end of the 15 pipe 39 communicates with a of the 8th reversal valve F8 end, one end of the 23 pipe 53 communicates with the c of the 8th reversal valve F8 end, the other end of the 23 pipe 53 communicates with the return pipe of evaporimeter 12, one end of the 24 pipe 54 communicates with the outlet pipe of evaporimeter 12, the other end of the 24 pipe 54 communicates with the 21 pipe 38, one end of the 16 pipe 37 communicates with the 4th pipe 49, and the other end of the 16 pipe 37 communicates with the 5th pipe 32.
Be serially connected with the 6th magnetic valve V6 in the 15 pipe 39, the end of the 6th magnetic valve V6 is communicated with the b end of the 3rd reversal valve F3, the other end of the 6th magnetic valve V6 is communicated with a end of the 8th reversal valve F8, the a end of the 8th reversal valve F8 communicates with the 15 pipe 39 other ends, one end of the 23 pipe 53 communicates with the c of the 8th reversal valve F8 end, the b end of the 8th reversal valve F8 communicates with an end of the 21 pipe 38, and the other end of the 21 pipe 38 communicates with the 6th pipe 35 by the 5th water pump 10; Be serially connected with the second magnetic valve V2 and the 5th magnetic valve V5 in the 16 pipe 37, the end of the second magnetic valve V2 communicates with the 4th pipe 49, the other end of the second magnetic valve V2 communicates with the end of the 5th magnetic valve V5, the other end of the 5th magnetic valve V5 communicates with the 5th pipe 32, the end of the first magnetic valve V1 is serially connected between a end of the other end of the 6th magnetic valve V6 and the 8th reversal valve F8, and the other end of the first magnetic valve V1 is serially connected between the other end and the 5th pipe 32 of the 5th magnetic valve V5; The 5th turnover pipe group comprises the 11 pipe the 44 and the 12 pipe 40, after one and above buried heat exchanger 16 parallel connections, with advancing of condenser 14, after outlet pipe is communicated with respectively by the 11 pipe and the 12 pipe 40, constitute circulation, wherein, the 12 pipe 40, advancing of condenser, outlet pipe and the 11 pipe are communicated with successively, carry out exchange heat, the a end of the first reversal valve F1 and b end are serially connected in the 5th pipe 32, the a end of the 7th reversal valve F7 and b end are serially connected in the 12 pipe 40, the a end of the 7th reversal valve communicates with the buried heat exchanger after the parallel connection, the c end of the first reversal valve F1 communicates with the c end of the 7th reversal valve F7 by the 9th pipe 33, the tenth pipe 34 1 ends are serially connected in the 6th pipe 35, its other end is serially connected between the b end and the 12 pipe 40 of the 7th reversal valve F7, the 7th magnetic valve V7 is serially connected in the middle of the tenth pipe 34, and b end and a end of the 4th reversal valve F4 are serially connected in the 11 pipe 44.
The 3rd turnover pipe group comprises the 7th pipe the 47 and the 8th pipe 48, after absorption refrigeration unit 5 and cooling tower 7 communicate respectively by the 7th pipe the 47 and the 8th pipe 48, constitute circulation, the b end of the second reversal valve F2 and a end are serially connected in the 8th pipe 48, the 3rd water pump 6 one ends communicate with a end of the second reversal valve F2, its other end communicates with cooling tower 7, the b end of the 5th reversal valve F5 and a end are serially connected in the 11 pipe 44, the c of the 5th reversal valve F5 end is communicated with the 7th pipe 47, the second reversal valve F2 by the 20 pipe 41 c end inserts between the b end of a end of the 4th reversal valve F4 and the 5th reversal valve F5 by the 19 pipe 42.
An end that is serially connected with the 4th water pump 15, the four water pumps 15 in the 12 pipe 40 communicates with the b end of the 7th reversal valve V7, and its other end communicates with the water inlet pipe of condenser 14, and the outlet pipe of condenser 14 communicates with the 11 pipe 44.The c end of the 4th reversal valve F4 inserts between the second magnetic valve V2 and the 5th magnetic valve V5 by the 22 pipe 43.
Be provided with the 6th reversal valve F6 between a end of the 7th reversal valve F7 and the buried heat exchanger 16, the b end of the 6th reversal valve F6 communicates with buried heat exchanger 16, the a of the 6th reversal valve F6 end communicates with a end of the 7th reversal valve F7, the c end of the 6th reversal valve F6 by the 14 pipe 46 insert in the 15 pipe 39, between the b of the end of the 6th magnetic valve V6 and the 3rd reversal valve F3 holds; Be provided with the 4th magnetic valve V4 between the b end of the 4th reversal valve F4 and the buried heat exchanger 16, between the b end that the termination of the 4th magnetic valve V4 is gone into the 4th reversal valve F4 and the buried heat exchanger 16, its other end by the 13 pipe 45 be linked in the 15 pipe 39, between the b of the end of the 6th magnetic valve V6 and the 3rd reversal valve holds.
Be provided with hot and cold water tank 8 between the air-conditioner in absorption refrigeration unit 5 and the air-conditioned room 9, hot and cold water tank 8 communicates with the 3rd magnetic valve V3 one end by the 17 pipe 52, communicate with air-conditioner in the air-conditioned room by the 18 pipe 36, hot and cold water tank 8 is provided with the second switch of hot water valve 18 externally is provided.Heat accumulation boiler 3 is provided with first switch valve 17 that hot water externally is provided.
The present invention is built together solar energy and earth source heat pump, " learning from other's strong points to offset one's weaknesses supply rationally ", one cover combined type new heat-supplying refrigeration system is provided, and the duty of each reversal valve and magnetic valve is provided under nine kinds of different mode of operations, mode of operation is seen Figure 10, and duty is seen Figure 11.
" a-b " expression a end and b end among Figure 11 are communicated with, and " a-c " expression a end and c end are communicated with, and the rest may be inferred; Not conducting is blocked in "-" expression.
One, summer during refrigerating operaton,
The hot water temperature who sets the solar energy heat-storage boiler is T ℃; Be limited to T under the optimal heat source temperature of absorption refrigeration unit
A, generally get 80 ℃; Be limited to T under the heat source temperature of absorption refrigeration unit
B, generally get 60 ℃.
Summer, the refrigerating operaton operating mode was as follows:
1) as T 〉=T
AThe time, see Fig. 1, solar absorption refrigerating machine group and source pump parallel running, the air conditioning terminal in air-conditioned room 9, just air-conditioner provides chilled water.Source pump is pressed the operation of earth source heat pump refrigeration mode, and this moments two, the cover refrigeration unit was worked simultaneously, and air conditioner cold water is provided, and had guaranteed the needs of maximum cold load.
2) work as T
A＞T 〉=T
BThe time, see Fig. 2, the work of solar absorption refrigerating machine group.The source pump operation, the air conditioning terminal of evaporimeter in air-conditioned room 9 provides chilled water; The cooling water of condenser 14 is by absorption refrigeration unit 5, evaporimeter 12 and buried heat exchanger 16 trains cooling.At this moment, the refrigeration duty demand is little, source pump cooling only, and the refrigerating capacity that absorption refrigeration unit 5 provides is used to reduce the condensation temperature of source pump, improves unit COP value, and reduces the soil heat absorption and load.
3) as T＜T
BThe time, see Fig. 3, the solar absorption refrigerating machine group quits work.Source pump is pressed the refrigeration mode operation, and the air conditioning terminal of evaporimeter 12 in air-conditioned room 9 provides chilled water; The cooling water of condenser 14 is by cooling tower 7 and buried heat exchanger 16 trains cooling.At this moment, the refrigeration duty demand is little, and source pump cooling only, the cooling tower 7 of absorption refrigeration unit 5 and soil are born the condensation heat load jointly.
Two, winter heating's operation, the solar absorption refrigerating machine group quits work.
At this moment, the hot water temperature of solar energy heat-storage boiler is T ℃.
1) as T 〉=T
BThe time, see Fig. 4, solar water directly utilizes, and source pump is closed.
2) as T＜T
BThe time, source pump is pressed the heating mode operation.
1. work as T
BDuring＞T 〉=40 ℃, see Fig. 5, the hot water that the heat accumulation boiler 3 of solar energy provides is connected with the hot water that heat pump condenser provides, the terminal backwater of preheating.At this moment, the thermic load that heat pump is born is little, is beneficial to energy-conservation.
2. when 40 ℃＞T 〉=30 ℃, see Fig. 6, the hot water that the heat accumulation boiler 3 of solar energy provides enters buried heat exchanger 16, behind the heating soil, enters evaporator with heat pump.At this moment, the low-temperature heat source of heat pump has utilized solar energy, and the soil moisture is improved.
3. when 30 ℃＞T 〉=15 ℃, see Fig. 7, the hot water that the heat accumulation boiler 3 of solar energy provides directly enters evaporator with heat pump.At this moment, the low-temperature heat source of heat pump has utilized solar energy, and the soil moisture is recovered.
4. when 15 ℃＞T 〉=5 ℃, see Fig. 8, the hot water that the heat accumulation boiler 3 of solar energy provides enters evaporator with heat pump after being introduced into and entering buried heat exchanger 16 and be heated again.At this moment, the low-temperature heat source of heat pump has utilized solar heat, has reduced soil heat release load.
5) when 5 ℃＞T, see Fig. 9, solar thermal collector 1 quits work, and heat accumulation boiler 3 stops outwards to provide hot water, heat pump to press the operation of earth source heat pump form.
Three, domestic hot-water supply
Provide heat by solar thermal collector 1 summer, and provide the domestic hot-water by heat accumulation boiler 3; Then provide the domestic hot-water by heat pump winter, obtains hot water from hot and cold water tank 8.
Claims (10)
1. solar energy absorption type refrigeration and ground source heat pump coupling combined supplying system, comprise solar thermal collector (1), buried heat exchanger (16), and end to end evaporimeter (12), compressor (11) and condenser (14), it is characterized in that solar thermal collector passes through first turnover Guan Zuyu heat accumulation boiler (3) series connection, the heat accumulation boiler is by second turnover Guan Zuyu absorption refrigeration unit (5) series connection, the absorption refrigeration unit is by the 3rd turnover Guan Zuyu cooling tower (7) series connection, the absorption refrigeration unit communicates by the air-conditioner in the 4th turnover Guan Zuyu air-conditioned room (9), buried heat exchanger communicates by the 5th turnover Guan Zuyu condenser, and evaporimeter communicates by the air-conditioner in the 6th turnover Guan Zuyu air-conditioned room; The first turnover pipe group, the second turnover pipe group, the 3rd turnover pipe group, the 4th turnover pipe group, the 5th turnover pipe group and the 6th turnover pipe group are provided with water pump, reversal valve and/or magnetic valve each other or in each pipe group.
2. according to described solar energy absorption type refrigeration of claim 1 and ground source heat pump coupling combined supplying system, it is characterized in that the described first turnover pipe group comprises first pipe (31) and second pipe (51), after solar thermal collector (1) and heat accumulation boiler (3) are communicated with respectively by first pipe and second pipe, constitute circulation, first water pump (2) is serially connected on second pipe.
3. according to described solar energy absorption type refrigeration of claim 1 and ground source heat pump coupling combined supplying system, it is characterized in that the described second turnover pipe group comprises the 3rd pipe (50) and the 4th pipe (49), after heat accumulation boiler (3) and absorption refrigeration unit (5) are communicated with respectively by the 3rd pipe and the 4th pipe, constitute circulation, second water pump (4) is serially connected in the 3rd pipe; The 4th turnover pipe group comprises the 5th pipe (32) and the 6th pipe (35), and the air-conditioner in absorption refrigeration unit and the air-conditioned room (9) constitutes circulation after communicating respectively by the 5th pipe and the 6th pipe, and the 3rd magnetic valve (V3) is serially connected in the 6th pipe; The 6th turnover pipe group comprises the 15 pipe (39), the 23 pipe (53), the 24 pipe (54) and the 16 pipe (37), the a end and the c end of the 3rd reversal valve (F3) are serially connected in the 3rd pipe, one end of the 15 pipe communicates with the b of the 3rd reversal valve end, the other end of the 15 pipe communicates with a end of the 8th reversal valve (F8), one end of the 23 pipe (53) communicates with the c of the 8th reversal valve end, the other end of the 23 pipe communicates with the return pipe of evaporimeter (12), one end of the 24 pipe (54) communicates with the outlet pipe of evaporimeter (12), the other end of the 24 pipe (54) communicates with the 21 pipe (38), one end of the 16 pipe communicates with the 4th pipe, and the other end of the 16 pipe communicates with the 5th pipe (32).
4. according to described solar energy absorption type refrigeration of claim 3 and ground source heat pump coupling combined supplying system, it is characterized in that being serially connected with the 6th magnetic valve (V6) in described the 15 pipe (39), one end of the 6th magnetic valve is communicated with the b end of the 3rd reversal valve (F3), the other end of the 6th magnetic valve is communicated with a end of the 8th reversal valve, the b end of the 8th reversal valve (F8) communicates with an end of the 21 pipe (38), and the other end of the 21 pipe communicates with the 6th pipe (35) by the 5th water pump (10); Be serially connected with second magnetic valve (V2) and the 5th magnetic valve (V5) in the 16 pipe (37), one end of second magnetic valve communicates with the 4th pipe (49), the other end of second magnetic valve communicates with an end of the 5th magnetic valve, the other end of the 5th magnetic valve communicates with the 5th pipe (32), one end of first magnetic valve (V1) is serially connected between a end of the other end of the 6th magnetic valve and the 8th reversal valve (F8), and the other end of first magnetic valve is serially connected between the other end and the 5th pipe of the 5th magnetic valve; The 5th turnover pipe group comprises the 11 pipe (44) and the 12 pipe (40), after one and above buried heat exchanger (16) parallel connection, and the water inlet pipe and water outlet pipe of condenser (14) by the 11 the pipe and the 12 the pipe respectively the connection after, constitute circulation, wherein, the 12 pipe, the water inlet pipe and water outlet pipe of condenser and the 11 pipe are communicated with successively, carry out exchange heat, the a end of first reversal valve (F1) and b end are serially connected in the 5th pipe (32), the a end and the b end of the 7th reversal valve (F7) are serially connected in the 12 pipe, the a end of the 7th reversal valve communicates with the buried heat exchanger after the parallel connection, the c end of first reversal valve communicates with the 7th reversal valve c end by the 9th pipe (33), the tenth pipe (34) one ends are serially connected in the 6th pipe (35), its other end is serially connected between the b end and the 12 pipe of the 7th reversal valve, the 7th magnetic valve (V7) is serially connected in the middle of the tenth pipe, and the b end and a end of the 4th reversal valve (F4) are serially connected in the 11 pipe.
5. according to described solar energy absorption type refrigeration of claim 4 and ground source heat pump coupling combined supplying system, it is characterized in that described the 3rd turnover pipe group comprises the 7th pipe (47) and the 8th pipe (48), after absorption refrigeration unit (5) and cooling tower (7) communicate respectively by the 7th pipe and the 8th pipe, constitute circulation, the b end and a end of second reversal valve (F2) are serially connected in the 8th pipe, the 3rd water pump (6) one ends communicate with a end of second reversal valve, its other end communicates with cooling tower, the b end of the 5th reversal valve (F5) and a end are serially connected in the 11 pipe (44), the c of the 5th reversal valve end is communicated with the 7th pipe (47) by the 20 pipe (41), and the c end of second reversal valve inserts between the b end of a end of the 4th reversal valves (F4) and the 5th reversal valve by the 19 pipe (42).
6. according to described solar energy absorption type refrigeration of claim 4 and ground source heat pump coupling combined supplying system, it is characterized in that being serially connected with the 4th water pump (15) in described the 12 pipe (40), one end of the 4th water pump communicates with the b end of the 7th reversal valve (V7), its other end communicates with the water inlet pipe of condenser (14), and the outlet pipe of condenser (14) communicates with the 11 pipe (44).
7. according to described solar energy absorption type refrigeration of claim 4 and ground source heat pump coupling combined supplying system, it is characterized in that the c end of described the 4th reversal valve (F4) inserts between second magnetic valve (V2) and the 5th magnetic valve (V5) by the 22 pipe (43).
8. according to described solar energy absorption type refrigeration of claim 4 and ground source heat pump coupling combined supplying system, it is characterized in that being provided with the 6th reversal valve (F6) between a end of described the 7th reversal valve (F7) and the buried heat exchanger (16), the b end of the 6th reversal valve communicates with buried heat exchanger, the a of the 6th reversal valve end communicates with a end of the 7th reversal valve, the c end of the 6th reversal valve by the 14 pipe (46) insert in the 15 pipe (39), between the b of an end of the 6th magnetic valve (V6) and the 3rd reversal valve (F3) holds; Be provided with the 4th magnetic valve (V4) between the b end of the 4th reversal valve (F4) and the buried heat exchanger (16), between the b end that one termination of the 4th magnetic valve is gone into the 4th reversal valve and the buried heat exchanger, its other end by the 13 manage that (45) are linked in the 15 pipe, between the b of an end of the 6th magnetic valve and the 3rd reversal valve holds.
9. according to described solar energy absorption type refrigeration of claim 3 and ground source heat pump coupling combined supplying system, it is characterized in that being provided with hot and cold water tank (8) between the air-conditioner in described absorption refrigeration unit (5) and the air-conditioned room (9), the hot and cold water tank communicates with the 3rd magnetic valve (V3) end by the 17 pipe (52), and the air-conditioner interior by the 18 pipe (36) and air-conditioned room communicates; Hot and cold water tank (8) is provided with the second switch of hot water valve (18) externally is provided.
10. according to described solar energy absorption type refrigeration of claim 2 and ground source heat pump coupling combined supplying system, it is characterized in that described heat accumulation boiler (3) is provided with externally provides first switch valve of hot water (17).
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| CN101832682A (en) * | 2009-03-13 | 2010-09-15 | 潘戈 | Energy-storing solar absorption refrigeration system |
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