The auxiliary carbon dioxide heat-pump associating of solar energy air-conditioning system
Technical field
What the present invention relates to is the system of a kind of solar energy utilization and air-conditioning technical field, specifically is the auxiliary carbon dioxide heat-pump associating of a kind of solar energy air-conditioning system.
Background technology
The aggravation of the in short supply and greenhouse effects of global fossil energy has brought many negative effects for environment and social development, the active demand of high-efficiency energy-saving technology has been promoted the fast development of solar airconditioning and air source heat pump application technology.Wherein, carbon dioxide heat-pump is owing to adopt natural refrigerant, and conventional relatively freon working medium has great advantage aspect environmental protection, more and more paid attention to.In addition, step into 21 century, the proportion of building energy consumption account whole nation energy consumption is more and more higher, and wherein most of energy consumption is from air-conditioning and domestic hot-water's part, and this researches and develops this field related system and has higher requirement.
Carbon dioxide heat-pump is because it strides the characteristic of critical cycle, in heating with provide and have the performance that surmounts conventional freon heat pump aspect the domestic hot-water.Simultaneously as mentioned above, it is a natural refrigerant, to the destruction of ozone layer and the effect of gathering of greenhouse effects, almost can ignore.Because above 2 points, the carbon dioxide heat-pump water heater has obtained development energetically in recent years in American-European-Japanese area, totally sells more than 700 ten thousand by 2010 in Japan, is described as " ecological smart (Eco-cute) ".Heating relatively, it is not fully up to expectations that carbon dioxide heat-pump circulates in refrigeration aspect performance, related experiment device or product refrigeration performance are relatively poor, compare with conventional freon working medium product, do not have competitiveness, so " raising of carbon dioxide heat-pump refrigeration performance " becomes the research focus of colleges and universities, research institution and enterprise in recent years.Simultaneously, the cry to renewable energy utilization is more and more higher in recent years, and regenerative resource, particularly Application of Solar Energy in heat pump type air conditioning system, will be significantly reduced the dependence of conventional heat pump air conditioner to electric energy.Therefore, develop a kind of not only satisfy building heating and hot water demand, also can satisfy refrigeration demand, reach superior performance, can utilize simultaneously the carbon dioxide heat-pump product of solar energy, promptly satisfy year round cooling, heating and domestic hot-water's demand, that utilize solar energy, the carbon dioxide heat-pump air-conditioning system efficiently of building, become a target of the energy-conservation environment-friendly products research and development in this field.
Find through retrieval the prior art document, the Chinese patent publication number is: CN1453516A, denomination of invention has proposed a kind of equipment that solar energy is combined with air source heat pump system for the patent of " solar heat pump air conditioner system and solar energy+air-source heat pump air conditioning system ", solar energy collecting heat energy in this invention, as the low-temperature heat source under the heat pump heating pattern, auxiliary cooling not, refrigeration is mainly still provided by air source heat pump, and condensation is reclaimed heat and is used for the domestic hot-water.With respect to the circulation of the conventional air source heat pump in this patent, the carbon dioxide heat-pump periodic duty is in the higher critical zone of striding, and the operation interval of its pressure and temperature is all different, so at the aspect such as withstand voltage of concrete equipment specific (special) requirements is arranged.And this patent does not design more targetedly at carbon dioxide working medium.
The Chinese patent Granted publication number is: CN2529115Y, the patent that the utility model name is called " solar heat pump air conditioner " adopts the main means of air source heat pump as refrigeration, the heat of solar energy is not converted into cold, the auxiliary air source heat pump refrigeration.In addition, also do not describe the critical characteristic of striding at the special working medium of carbon dioxide, which kind of concrete improvement heat exchanging device and compressor carry out.
The Chinese patent publication number is: CN1888726A, denomination of invention uses condenser as vitals for the patent of " solar heat pump and use the winter and summer two-purpose air conditioner system of this heat pump ", in fact, if use carbon dioxide as working medium, because it is operated in and strides the critical zone, need to use gas cooler and substitute the condenser of using in the conventional hot working fluid pumping system.
The Chinese patent Granted publication number is: CN100470170C, denomination of invention has been considered carbon dioxide working medium characteristic for the patent of " solar auxiliary air source CO 2 trans-critical heat pump integrated air-conditioning system ", stronger specific aim is arranged, but its solar thermal collector is collected heat and is not converted into the additional carbon dioxide heat-pump refrigeration of cold, and just under heating and hot water pattern, assisted heat pump produces heat, and heat perhaps independently is provided.Therefore, refrigeration remains by carbon dioxide heat-pump and independently bears.As previously mentioned, the carbon dioxide heat-pump refrigeration performance is relatively poor, heats and to heat outlet capacity stronger, and the introducing of solar energy is not carried out balance with its superiority and inferiority, remedied the original deficiency on refrigeration of carbon dioxide heat-pump circulation.
Patent publication No. is WO2006124776 (A2), denomination of invention is HYBRID VAPOR COMPRESSION-ABSORPTION CYCLE, Chinese translation is for mixing compression-absorption circulation, this invention at first on the circulation configuration with conventional absorption heat pump circulation (ABSC, ABSorption Cycle) and gas compression circulation (VCC, Vapor Compression Cycle) difference, be called combined-circulation (VCCSC, Vapor Compression Cycles with Solution Circuits) traditionally.This kind circulation has all proposed new requirement to compressor design and cycle fluid, be generally compound two yuan or ternary working medium, the carbon dioxide natural refrigerant does not adapt in the working medium scope in this circulation, and also not relevant at present patent or report VCCSC recycle the thermal source of solar energy as auxiliary cooling.Similarly the Patent document number of international monopoly is US4031712 (A), name is called Combined absorption and vapor-compression refrigeration system (Chinese translation: unite the absorption pressure compression type refrigerating system) and Patent document number is US7765823 (B2), and name is called Hybrid vapor compression-absorption cycle (Chinese translation: the absorption circulation of compound compressed).
Three patents of NIPPONDENSO company application, Patent document number is respectively JP11223414-A (Solar heat utilization type combined cycle refrigeration system for air conditioning of residential and factory buildings-desorbs refrigerant from absorbent by solar heat inabsorption refrigerating cycle which cools refrigerant discharged from compressor of vapor compression refrigerating cycle, Chinese translation: suitable family and workshop building air conditioner, use the solar energy desorbs refrigerant in the Solar Energy Heat Utilization System of joint refrigeration circulation-absorption refrigeration circulation, the cold that produces is used for the compressor discharging refrigerant in the cooled compressed kind of refrigeration cycle), JP11223415-A (Solar heat utilization type combined cycle refrigeration system for air conditioning of residential and factory buildings-uses vapor compression refrigerating cycle to cool condenser of absorption refrigerating cycle which uses solar heat for desorption of refrigerant from absorber, Chinese translation: suitable family and workshop building air conditioner, the cold of the Solar Energy Heat Utilization System of joint refrigeration circulation-compression refrigeration circulation is used for the condenser in the cooling and absorbing kind of refrigeration cycle, solar energy is used for desorbs refrigerant in the absorption refrigeration circulation), JP11223416-A (Solar heat utilization type combined cycle refrigeration system for air conditioning of residential and factory buildings-uses evaporator of vapor compression refrigerating cycle to recool air cooled with absorption refrigerating cycle, Chinese translation: suitable family and workshop building air conditioner, the cold of the Solar Energy Heat Utilization System of joint refrigeration circulation-compression refrigeration circulation is used for cooling off again, air cooling in the auxiliary absorption refrigeration circulation), the common ground of these three patents of invention is to have designed a kind of refrigeration system, this system applies Driven by Solar Energy absorption refrigeration unit, produce cold and compression-type refrigeration cooperating, difference is to replenish the position difference that cold uses, and wherein Patent document number is after this part cold that JP11223414-A produces the Driven by Solar Energy Absorption Refrigerator is applied to the condenser of compression-type refrigeration circulation, before the choke valve.But this patented invention is with respect to previously described desired product---the associating air-conditioning system of the auxiliary carbon dioxide heat-pump of applied solar energy still has several deficiencies: first, purposes is single, only be refrigeration system, do not consider satisfying the building integration requirement in the annual time period; The second, the compression-type refrigeration part is not considered the relevant many transformations at the carbon dioxide characteristic, such as: condenser portion does not represent to transform as gas cooler etc.; The 3rd, absorption type refrigerating unit and compression-type refrigeration device are independent two table apparatus, though connect by pipeline, its patent of invention is described or diagram is not considered to merge into a single whole in actual product.
Summary of the invention
The present invention is directed to the prior art above shortcomings, the auxiliary carbon dioxide heat-pump associating of a kind of solar energy air-conditioning system is provided, this system can realize building year round cooling, heating and domestic hot-water's integration requirement, can make the refrigeration and the heating capacity of entire system obtain balance, the complete machine performance is comparatively perfect, has higher performance indications, the working medium environmental protection, utilize regenerative resource, reduced the dependence of entire system primary energy.
The present invention is achieved by the following technical solutions, the present invention includes: end system in collecting system, hold over system, domestic hot-water supply system, heat pump type air conditioning system and the air conditioning chamber, wherein: collecting system is connected with hold over system and domestic hot-water supply system successively, and hold over system is connected with end system in heat pump type air conditioning system and the air conditioning chamber successively.
Described heat pump type air conditioning system comprises: the solar refrigeration valve, the heat pump Control Component, solar water pump, heat pump work alone water pump and associated working main frame, described associated working main frame is made up of Absorption Refrigerator that is connected in series and water collector, wherein: an end of solar refrigeration valve is connected with the heat pump Control Component with hold over system, the other end of solar refrigeration valve is connected with an end of Absorption Refrigerator, the other end of Absorption Refrigerator is connected with the heat pump Control Component with an end of solar water pump, the other end of solar water pump is connected with hold over system, a work alone end of water pump of heat pump is connected with water collector, the work alone other end of water pump of heat pump is connected with the heat pump Control Component, and the heat pump Control Component is connected with end system in the air conditioning chamber with hold over system respectively.
The input of described water collector is provided with carbon dioxide heat-pump, this carbon dioxide heat-pump adopts carbon dioxide as working medium, the working pressure range of this heat pump is 3MPa to 15MPa, operating temperature range is-20 ℃ to 95 ℃, and the equipment original paper that carbon dioxide heat-pump inside is adopted can satisfy strides critical working medium characteristic.
Described heat pump Control Component comprises: two triple valves and four valves, wherein: the accumulation of heat end of first triple valve is connected with hold over system, the host side of first triple valve is connected with the solar refrigeration valve, the control end of first triple valve is connected with an end of first valve, an end of the end system and second valve is connected in the other end of first valve and the air conditioning chamber, the other end of second valve is connected with water collector, the accumulation of heat end of second triple valve is connected with solar water pump, the host side of second triple valve is connected with Absorption Refrigerator, the control end of second triple valve is connected with an end of the 4th valve, an end of end system and the 3rd valve is connected in the other end of the 4th valve and the air conditioning chamber, and the other end of the 3rd valve and the heat pump water pump that works alone is connected.
Described collecting system comprises: solar energy acquisition EGR and heat-exchange device, and wherein: the solar energy acquisition EGR is connected with heat-exchange device, and heat-exchange device is connected with hold over system.
Described hold over system comprises: the insulation cyclic water tank, temperature sensing controller and the electric heater that have heat-exchange tube, wherein: temperature sensing controller all is connected with the insulation cyclic water tank with electric heater, the insulation cyclic water tank is connected with heat pump type air conditioning system with collecting system respectively, and the heat-exchange tube of insulation cyclic water tank is connected with the domestic hot-water supply system.
Described domestic hot-water supply system comprises: mix water valve, two water supply valves and hot water water pump, wherein: the control end that mixes water valve is connected with first water supply valve and hot water water pump successively, and the hot water water pump is connected with the water tank end of second water supply valve, hold over system and mixed water valve successively.
The working medium of described Absorption Refrigerator adopts lithium-bromide solution.
The present invention has five kinds of mode of operations, comprising: refrigeration mode, the double heat supply aqueous mode of refrigeration, heating mode, double heat supply aqueous mode of heating and hot water pattern.Simultaneously, according to the solar irradiance difference, heating has solar energy direct heating and two kinds of operation forms of heat pump heating, refrigeration has solar absorption separate refrigeration, carbon dioxide heat-pump separate refrigeration and solar energy absorption type refrigeration and three kinds of operation forms of carbon dioxide heat-pump joint refrigeration, hot water that solar-heating and the auxiliary two kinds of operation forms of electrical heating are arranged.
In sum, switching is described to the different system operational mode.Under the refrigeration mode, when the measured temperature of temperature sensing controller is higher than 85 ℃, use Driven by Solar Energy Absorption Refrigerator refrigeration; When the measured temperature of temperature sensing controller is lower than 85 ℃, use the carbon dioxide heat-pump refrigeration.Under the heating mode, when the measured temperature of temperature sensing controller is higher than 45 ℃, use solar energy to store hot water direct heating; When the measured temperature of temperature sensing controller is lower than 45 ℃, use the carbon dioxide heat-pump heating.Under hot water pattern, the double heat supply aqueous mode of refrigeration and the double heat supply aqueous mode of heating, when the measured temperature of temperature sensing controller was lower than 55 ℃, all opening electric heater was assisted heating to the hot water in the attemperater.
The present invention can realize building year round cooling, heating and domestic hot-water's integration requirement; Under the summer refrigeration mode, by the auxiliary carbon dioxide heat-pump of Absorption Refrigerator, remedied the relatively poor inferior position of its refrigerating capacity, make the refrigeration of entire system and heating capacity obtain balance, the complete machine performance is comparatively perfect, has higher performance indications; Use carbon dioxide as main working medium, replace conventional freon, environmental protection; Applied solar energy has reduced the dependence of entire system to primary energy.
Description of drawings
Fig. 1 and Fig. 2 are embodiment 1 system schematic.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
As shown in Figure 1, present embodiment comprises: end system 5 in collecting system 1, hold over system 2, domestic hot-water supply system 3, heat pump type air conditioning system 4 and the air conditioning chamber, wherein: collecting system 1 is connected with hold over system 2 and domestic hot-water supply system 3 successively, and hold over system 2 is connected with end system 5 in heat pump type air conditioning system 4 and the air conditioning chamber successively.
As illustrated in fig. 1 and 2, described heat pump type air conditioning system 4 comprises: solar refrigeration valve 6, heat pump Control Component 7, solar water pump 8, heat pump work alone water pump 9 and associated working main frame 10, described associated working main frame 10 is made up of Absorption Refrigerator 11 that is connected in series and water collector 12, wherein: an end of solar refrigeration valve 6 is connected with heat pump Control Component 7 with hold over system 2, the other end of solar refrigeration valve 6 is connected with an end of Absorption Refrigerator 11, the other end of Absorption Refrigerator 11 is connected with heat pump Control Component 7 with an end of solar water pump 8, the other end of solar water pump 8 is connected with hold over system 2, a work alone end of water pump 9 of heat pump is connected with water collector 12, the work alone other end of water pump 9 of heat pump is connected with heat pump Control Component 7, and heat pump Control Component 7 is connected with end system 5 in the air conditioning chamber with hold over system 2 respectively.
The input of described water collector 12 is provided with carbon dioxide heat-pump 13.
Described heat pump Control Component 7 comprises: first triple valve 14, second triple valve 15, first valve 16, second valve 17, the 3rd valve 18 and the 4th valve 19, wherein: the accumulation of heat end of first triple valve 14 is connected with hold over system 2, the host side of first triple valve 14 is connected with solar refrigeration valve 6, the control end of first triple valve 14 is connected with an end of first valve 16, an end of the end system 5 and second valve 17 is connected in the other end of first valve 16 and the air conditioning chamber, the other end of second valve 17 is connected with water collector 12, the accumulation of heat end of second triple valve 15 is connected with solar water pump 8, the host side of second triple valve 15 is connected with Absorption Refrigerator 11, the control end of second triple valve 15 is connected with an end of the 4th valve 19, an end of end system 5 and the 3rd valve 18 is connected in the other end of the 4th valve 19 and the air conditioning chamber, and the other end of the 3rd valve 18 and the heat pump water pump 9 that works alone is connected.
Described collecting system 1 comprises: solar energy acquisition EGR 20, the 5th valve 21, first circulating pump 22 and heat-exchange device 23, wherein: solar energy acquisition EGR 20 is connected with the 5th valve 21, heat-exchange device 23 and first circulating pump 22 successively, and heat-exchange device 23 is connected with hold over system 2.
Described hold over system 2 comprises: the insulation cyclic water tank 24 that has heat-exchange tube, the 6th valve 25, second circulating pump 26, temperature sensing controller 27 and electric heater 28, wherein: temperature sensing controller 27 all is connected with insulation cyclic water tank 24 with electric heater 28, temperature sensing controller 27 is connected with electric heater 28, insulation cyclic water tank 24 is connected with an end of the 6th valve 25 and an end of second circulating pump 26 respectively, the other end of the other end of the 6th valve 25 and second circulating pump 26 all is connected with heat exchanger, insulation cyclic water tank 24 is connected with the accumulation of heat end of solar water pump 8 with first triple valve 14 respectively, and the heat-exchange tube of insulation cyclic water tank 24 is connected with domestic hot-water supply system 3.
Described domestic hot-water supply system 3 comprises: mix water valve 29, first water supply valve 30, hot water water pump 31 and second water supply valve 32, wherein: the control end that mixes water valve 29 is connected with first water supply valve 30 and hot water water pump 31 successively, and hot water water pump 31 is connected with the water tank end of second water supply valve 32, hold over system 2 and mixed water valve 29 successively.
Described carbon dioxide heat-pump 13 adopts carbon dioxide as working medium, and the working pressure range of this heat pump is 3MPa to 15MPa, and operating temperature range is-20 ℃ to 95 ℃, and the equipment original paper that adopt carbon dioxide heat-pump 13 inside can satisfy strides critical working medium characteristic.
The working medium of described Absorption Refrigerator 11 adopts lithium-bromide solution.
This device has five kinds of mode of operations, comprising: refrigeration mode, refrigeration hold concurrently heat supply aqueous mode, heating mode, heating hold concurrently heat supply aqueous mode and hot water pattern.Simultaneously, according to the solar irradiance difference, heating has solar energy direct heating and two kinds of operation forms of heat pump heating, refrigeration has solar absorption separate refrigeration, carbon dioxide heat-pump 13 separate refrigeration and solar energy absorption type refrigeration and three kinds of operation forms of carbon dioxide heat-pump 13 joint refrigerations, hot water that solar-heating and the auxiliary two kinds of operation forms of electrical heating are arranged.
Described solar energy acquisition EGR 20 can be arranged in facades such as roof, balcony, realizes that the building solar energy equipment is integrated.
Described solar energy acquisition EGR 20 is collected solar radiation heat energy, passes to working-medium water, and water circulates in loop by first circulating pump 22, continues heat transferred heat-exchange device 23.
Described heat-exchange device 23 by second circulating pump 26, circulates the heat transferred working-medium water in loop, continue heat is stored in the temperature-sensitive attemperater.
Described insulation cyclic water tank 24 is with the working-medium water in the heat transferred heat-exchange tube that stores.This working-medium water is from city planting ductwork, it is by hot water water pump 31, be divided into two branch roads, lead up to second water supply valve 32, through the heat-exchange tube of insulation cyclic water tank 24, intensification becomes hot water, another road keeps low water temperature, the water of two-way different temperatures by first water supply valve 30, mix by mixing water valve 29, supply with the domestic hot-water.Be lower than 55 ℃ when temperature sensing controller 27 records water temperature, then opening electric heater 28, and additional heat enters attemperater.
Under the hot water pattern, except that the said equipment, all the other equipment are not all opened in the system, and refrigeration or heating output only do not provide the domestic hot-water.
Under the refrigeration mode, described hydro-thermal water water pump 31, first water supply valve 30, second water supply valve 32 and mixed water valve 29 are closed, and the domestic hot-water is not provided.Insulation cyclic water tank 24 is by solar water pump 8, with the hot water supply that stores lithium-bromide absorption-type refrigerating machine 11 to associated working main frame 10 inside, produce cold, this moment, first triple valve 14 made current direction solar refrigeration valve 6, solar refrigeration valve 6 is opened, first valve 16 is closed, and second triple valve 15 makes current direction solar water pump 8.Described lithium-bromide absorption-type refrigerating machine 11 is passed to water collector 12 with the cold that produces.Described water collector 12 also is connected with carbon dioxide heat-pump 13, when cold is not enough, opens carbon dioxide heat-pump 13, auxiliary cooling.
Under the refrigeration mode, described hydro-thermal water water pump 31, first water supply valve 30, second water supply valve 32 and mixed water valve 29 are closed, and the domestic hot-water is not provided.When recording water temperature, temperature sensing controller 27 is lower than 85 ℃, then lithium-bromide absorption-type refrigerating machine 11 does not start, solar water pump 8 does not start, solar refrigeration valve 6, first valve 16 and the 4th valve 19 are closed, second valve 17 and the 3rd valve 18 are opened, work alone water pump 9 of heat pump is opened carbon dioxide heat-pump 13 separate refrigeration.
The refrigeration mode heat supply aqueous mode of holding concurrently, on aforesaid refrigeration mode basis, described hydro-thermal water water pump 31, first water supply valve 30, second water supply valve 32 and mixed water valve 29 are opened, and the domestic hot-water is provided.
Under the heating mode, described hydro-thermal water water pump 31, first water supply valve 30, second water supply valve 32 and mixed water valve 29 are closed, and the domestic hot-water is not provided.Hot water in the described insulation cyclic water tank 24, by first triple valve 14 and first valve 16 end system 5 to the air conditioning chamber, again by the 4th valve 19, second triple valve 15 and solar water pump 8, get back to insulation cyclic water tank 24, finish the solar water individual heating, carbon dioxide heat-pump 13 is not opened, and at this moment, solar refrigeration valve 6, second valve 17 and the 3rd valve 18 are closed.
Under the heating mode, described hydro-thermal water water pump 31, first water supply valve 30, second water supply valve 32 and mixed water valve 29 are closed, and the domestic hot-water is not provided.Water temperature is lower than 45 ℃ in temperature sensing controller 27, no longer adopt the solar water individual heating, and use carbon dioxide heat-pump 13 to heat, at this moment, solar refrigeration valve 6, first valve 16, the 4th valve 19 and solar water pump 8 are closed, carbon dioxide heat-pump 13 is opened, and the heat pump water pump 9 that works alone is opened.Described carbon dioxide heat-pump 13 hot-water supplies by heat pump water pump 9, water collector 12 and second valve 17 end system 5 to the air conditioning chamber that works alone, are supplied with heat to indoor, get back to the heat pump water pump 9 that works alone by the 3rd valve 18 thereafter.
The heating mode heat supply aqueous mode of holding concurrently, on aforesaid heating mode basis, described hydro-thermal water water pump 31, first water supply valve 30, second water supply valve 32 and mixed water valve 29 are opened, and the domestic hot-water is provided.Described water collector 12, be connected with the heat pump water pump 9 that works alone, make in the loop working-medium water keep circulation by the heat pump water pump 9 that works alone, after working-medium water leaves water collector 12, by second valve 17, arrive end system 5 in the air conditioning chamber,, get back to the heat pump water pump 9 that works alone by the 3rd valve 18 thereafter to indoor conveying cold or heat.
In sum, switching is described to the different system operational mode.Under the refrigeration mode, when temperature sensing controller 27 measured temperature are higher than 85 ℃, use Driven by Solar Energy Absorption Refrigerator 11 refrigeration; When temperature sensing controller 27 measured temperature are lower than 85 ℃, use carbon dioxide heat-pump 13 refrigeration.Under the heating mode, when temperature sensing controller 27 measured temperature are higher than 45 ℃, use solar energy to store hot water direct heating; When temperature sensing controller 27 measured temperature are lower than 45 ℃, use carbon dioxide heat-pump 13 heating.Under hot water pattern, the double heat supply aqueous mode of refrigeration and the double heat supply aqueous mode of heating, when temperature sensing controller 27 measured temperature were lower than 55 ℃, all the hot water in 28 pairs of attemperaters of opening electric heater was assisted heating.