CN104864631A - Compound type district heating and cooling system - Google Patents

Compound type district heating and cooling system Download PDF

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Publication number
CN104864631A
CN104864631A CN201510293887.2A CN201510293887A CN104864631A CN 104864631 A CN104864631 A CN 104864631A CN 201510293887 A CN201510293887 A CN 201510293887A CN 104864631 A CN104864631 A CN 104864631A
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China
Prior art keywords
cooling
cooling system
heating
central
cold
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CN201510293887.2A
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CN104864631B (en
Inventor
傅远雄
游洋
南补连
尹立新
樊少林
师诚
黄婷
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System In Beijing Jing Can Following Combustion Gas Thermal Power Co Ltd
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System In Beijing Jing Can Following Combustion Gas Thermal Power Co Ltd
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Publication of CN104864631A publication Critical patent/CN104864631A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B29/00Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
    • F25B29/003Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00Hot-water central heating systems
    • F24D3/18Hot-water central heating systems using heat pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/001Compression cycle type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00Details or features not otherwise provided for
    • F24F2221/54Heating and cooling, simultaneously or alternatively

Abstract

The invention provides a compound type district heating and cooling system which performs cooling and heating for users in a district through a district conveying pipe network. The compound type district heating and cooling system comprises a central heating system, a central cooling system, ground-source heat pump systems and ice storage cooling systems. The ground-source heat pump systems are respectively connected with the central heating system and the central cooling system respectively, the ice storage cooling systems are connected with the central cooling system; and the central heating system and the central cooling system are arranged in a concentrated energy supply station of the district. According to green space conditions and energy supply tail end loads in the district, a plurality of ground-source heat pump systems are arranged so as to provide heat supply compensation for the energy supply tail end; during the heat supply, the ground-source heat pump systems serve as basic heat sources, and the central heating system is used for peak regulation; according to the energy supply tail end load in the district, a plurality of ice storage cooling systems are arranged so as to provide cooling compensation for the energy supply tail end; during the cooling, the ground-source heat pump systems and the ice storage cooling systems serve as basic cold sources, and the central cooling system is used for peak regulation.

Description

A kind of compound district heating and cooling system
Technical field
The present invention relates to cold, heat and electricity triple supply field, particularly relate to the compound district heating and cooling system in the planning of a kind of urban energy.
Background technology
Regional Energy system, public utilities as city water, electric power, one of the infrastructure in city, the central cooling in order to meet Building group in a certain specific region, heat demand, by special energy centre centralized system refrigeration water, hot water etc., the one or more extensive domestic hot-water being undertaken supplying by region pipe network, central air-conditioning cold and heat source system.At present, the development of Regional Energy system mainly concentrates on and utilizes single source point to be the energy supply of whole region, the single and compensation lacked energy supply end of energy supply form.Especially for garden expansion project, original energy supply source point and pipe network system cannot meet enlarging regional demand, and newly-built source point then needs new pollution source emission.
Summary of the invention
The invention provides a kind of compound district heating and cooling system, be district's intra domain user cooling and heat supply by region transmission pipeline network, described compound heating and cooling system comprises central heating system, central cooling system, earth-source hot-pump system and ice conserve cold cold supply system; Described earth-source hot-pump system connects described central heating system and central cooling system respectively, and described ice conserve cold cold supply system connects described central cooling system, and described central heating system and central cooling system are arranged on the central energy supply station in described region; According to the greenery patches situation in described region and energy supply end load, multiple earth-source hot-pump system is set, to provide the heating compensation to described energy supply end; During heat supply, thermal source based on described earth-source hot-pump system, described central heating system is as peak regulation; According to the energy supply end load in described region, multiple ice conserve cold cold supply system is set, to provide, the cooling of described energy supply end is compensated; During cooling, low-temperature receiver based on described earth-source hot-pump system and ice conserve cold refrigeration system, described central cooling system is as peak regulation.
Further, in one embodiment, described central heating system adopts gas combustion-gas vapor combined cycle unit, adopts high temperature municipal administration hot water as driving heat source.
Further, in one embodiment, described compound heating and cooling system also comprises multiple large temperature difference heat-exchange unit, connects described central heating system, after the hot water in described central heating system is carried out secondary heat exchange, is delivered to described district intra domain user.
Further, in one embodiment, described large temperature difference heat-exchange unit and earth-source hot-pump system, ice-storage system are arranged in the multiple energy source stations in described region.
Further, in one embodiment, described central cooling system adopts large temperature difference cooling unit, comprises first order refrigeration unit and second level refrigeration unit, described first order refrigeration unit and second level refrigeration unit tandem working, to realize large temperature difference cooling; Described first order refrigeration unit comprises multiple stage absorption refrigeration unit, carries out first order refrigeration, generates a cold water; Described second level refrigeration unit comprises multiple stage centrifugal refrigerating unit, carries out second level refrigeration, generates secondary cold water.
Further, in one embodiment, described absorption refrigeration unit is lithium bromide absorption refrigerating set.
Further, in one embodiment, described region transmission pipeline network carries hot water when heat supply, carries cold water when cooling.
Further, in one embodiment, described central cooling system is electric refrigeration system or lithium bromide absorption chiller system.
Compound district heating and cooling system of the present invention, utilizes large temperature difference technology, expands the conveying capacity of original pipe network; When not increasing new source point, make full use of the energy supply of existing resource feasible region.That is, make full use of the hot-cool demand that regenerative resource solves garden, reach maximise power-saving, the lowest coursing cost; Make full use of regional location advantage, utilize municipal heat supply network supplementing as thermal source, thus the maximized security reliability that ensure that system cloud gray model; Make full use of residual heat of electric power plant, cooling in summer, improve efficiency of energy utilization.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those skilled in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of compound district heating and cooling system of the embodiment of the present invention;
Fig. 2 is the system schematic of central heating system and earth-source hot-pump system combined heat;
Fig. 3 is the system connection diagram of a kind of combustion gas cold, heat and power triple supply system and earth-source hot-pump system Function Coupling;
The structural representation of the large temperature difference cooling unit of the central cooling system of Fig. 4 the present embodiment;
Fig. 5 is the structural representation of the specific embodiment of large temperature difference cooling unit of the present invention;
Fig. 6 is the system schematic of a specific embodiment of compound district heating and cooling system of the present invention;
Fig. 7 is the structural representation of compound district heating and cooling system embodiment illustrated in fig. 6.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the structural representation of a kind of compound district heating and cooling system of the embodiment of the present invention.As shown in the figure, the compound district heating and cooling system of the present embodiment comprises central heating system, central cooling system, earth-source hot-pump system and ice conserve cold cold supply system.Wherein, described central heating system is municipal heating system; Described central cooling system is electric refrigeration system or lithium bromide absorption chiller system.
Described earth-source hot-pump system connects described central heating system and central cooling system respectively, and described ice conserve cold cold supply system connects described central cooling system, and described central heating system and central cooling system are arranged on the central energy supply station in described region.
According to the greenery patches situation in described region and energy supply end load, multiple earth-source hot-pump system is set, to provide the heating compensation to described energy supply end; During heat supply, thermal source based on described earth-source hot-pump system, described central heating system is as peak regulation; According to the energy supply end load in described region, multiple ice conserve cold cold supply system is set, to provide, the cooling of described energy supply end is compensated; During cooling, low-temperature receiver based on described earth-source hot-pump system and ice conserve cold refrigeration system, described central cooling system is as peak regulation.
In the present embodiment, described central heating system adopts gas combustion-gas vapor combined cycle unit, adopts high temperature municipal administration hot water as driving heat source.
In the present embodiment, as shown in Figure 2, described compound heating and cooling system also comprises multiple large temperature difference heat-exchange unit, connects described central heating system, after the hot water in described central heating system is carried out secondary heat exchange, is delivered to described district intra domain user.Described large temperature difference heat-exchange unit and earth-source hot-pump system, ice-storage system are arranged in the multiple energy source stations in described region.Such as shown in Fig. 2, have two energy source station #1 and #2, each energy source station comprises a large temperature difference heat-exchange unit, an earth-source hot-pump system and an ice-storage system respectively.But the present invention is not limited thereto, each energy source station is not to comprise large temperature difference heat-exchange unit and earth-source hot-pump system, ice-storage system, can only have large temperature difference heat-exchange unit yet, or only have earth-source hot-pump system, or both comprising wherein.
In the present embodiment, described central cooling system adopts large temperature difference cooling unit, comprises first order refrigeration unit and second level refrigeration unit, described first order refrigeration unit and second level refrigeration unit tandem working, to realize large temperature difference cooling; Described first order refrigeration unit comprises multiple stage absorption refrigeration unit, carries out first order refrigeration, generates a cold water; Described second level refrigeration unit comprises multiple stage centrifugal refrigerating unit, carries out second level refrigeration, generates secondary cold water.In the present embodiment, described absorption refrigeration unit is lithium bromide absorption refrigerating set.As shown in Figure 3, the central cooling system of the present embodiment adopts large temperature difference cooling unit, comprises first order refrigeration unit 11 and second level refrigeration unit 12, described first order refrigeration unit 11 and second level refrigeration unit 12 tandem working, to realize large temperature difference cooling; Described first order refrigeration unit 11 comprises multiple stage absorption refrigeration unit, carries out first order refrigeration, generates a cold water; Described second level refrigeration unit 12 comprises multiple stage centrifugal refrigerating unit and/or adopts ice storage technology, carries out second level refrigeration, generates secondary cold water.In the present embodiment, described absorption refrigeration unit is lithium bromide absorption refrigerating set, and its refrigerating capacity is 7100KW.
Fig. 4 is the structural representation of the specific embodiment of large temperature difference cooling unit of the present invention.As shown in Figure 4, described first order refrigeration unit is 4 lithium bromide absorption refrigerating set, and described second level refrigeration unit is 4 centrifugal refrigerating unit.Return water temperature is down to 8 DEG C from 13 DEG C by 4 lithium bromide absorption refrigerating set of the first order, and 4 centrifugal refrigerating unit of the second level are down to 3 DEG C by 8 DEG C, to realize large temperature difference cooling.
In a replacement scheme, the refrigeration unit of the second level can adopt ice conserve cold refrigeration unit to replace, and centrifugal refrigerating unit and ice conserve cold refrigeration unit also can be adopted jointly to carry out secondary refrigeration.In the present embodiment, maximum sharpness cooling ability 56270kW (16000RT), total is DN700 for cold water pipe caliber, service building area about 900,000 square metres.
In the present embodiment, described region transmission pipeline network carries hot water when heat supply, carries cold water when cooling.
In the present embodiment, described central cooling system is electric refrigeration system or lithium bromide absorption chiller system, also can be electricity refrigeration and ice-storage system.
First, refrigeration system in the compound district heating and cooling system of the embodiment of the present invention adopts large temperature difference cooling, refrigeration distance becomes large, technique is comparatively simple, it is comparatively easy to realize, and effectively can reduce the transmission & distribution energy consumption of chilled water conveying system, reduces the supply water yield of chilled water system, reduce the consumption of water resource, the scale of chilled water subsystem can be reduced simultaneously.
Secondly, the compound district heating and cooling system of the embodiment of the present invention can realize cold and hot same net, i.e. heat supply, cooling caliber can be mated mutually, significantly shorten the pipeline network construction cycle, reduces pipe-networks engineering investment, has saved pipeline network construction land used; The demand of hot and cold load is different, and operation reserve is also different.Run by " cold and hot same net ", analyze the difference of the factors such as pipe network pipe damage, running resistance, circulating pump energy consumption when determining hot and cold network operation and pipe material, caliber to the impact of hot and cold pipe network operation, improve pipe network operation level; Reduce pipe network repair and maintenance workload and maintenance cost, improve pipe network utilization rate.
Finally, the compound district heating and cooling system of the embodiment of the present invention when not increasing new source point, can make full use of the energy supply of existing resource feasible region.That is, make full use of the hot-cool demand that regenerative resource solves garden, reach maximise power-saving, the lowest coursing cost; Make full use of regional location advantage, utilize municipal heat supply network supplementing as thermal source, thus the maximized security reliability that ensure that system cloud gray model; Make full use of residual heat of electric power plant, cooling in summer, improve efficiency of energy utilization.
It is implemented as follows:
During heat supply: by adopting large temperature difference unit in energy source station, utilize the high temperature municipal administration hot water of 130 DEG C as driving heat source, produce the heating hot water of low temperature, the system of air-conditioning heat supply is adopted to adopt direct supply system for user's end, for the terminal temperature difference adopting floor panel heating, multifunctional pump can be set up at user entry place, the water temperature of compatibly board radiation heating is provided.
Earth-source hot-pump system is that the novel energy utilizing superficial-layer geothermal energy to carry out heating and refrigerating utilizes the eco-friendly power source of technology to utilize system.Earth-source hot-pump system normally to shift in underground heat or cold to required place, also use the heat storage and cold accumulation ability that underground is huge, source, ground in winter is transferred to heat in building from underground, summer is transferred to the cold of underground in building again, a year forms a cooling and heating circulation system, realizes the function of energy-saving and emission-reduction.Central heating system provides driving electric power for earth-source hot-pump system, and earth-source hot-pump system can also bear the cooling and heating load in trough-electricity stage.Two kinds of energy-provision way supplement mutually, and energy supply form more flexibly, economy is better, and the efficiency utilization of clean energy resource and regenerative resource can the discharges of decreasing pollution thing.
Fig. 5 is the system schematic of large temperature difference heat-exchange unit in energy source station and earth-source hot-pump system combined heat.As shown in Figure 5, carry 130 DEG C of high temperature municipal administration hot water of coming first to enter energy source station from central heating center, as driving heat source, large temperature difference heat-exchange unit is adopted at energy source station, absorption type heat pump assembly in excessive temperature difference heat-exchange unit and water/water-to-water heat exchanger carry out heat exchange, exchange the heating hot water of low temperature 55 DEG C for, be delivered to user.Meanwhile, earth-source hot-pump system also provides the low-temperature water heating of 55 DEG C to be delivered to user, utilizes earth-source hot-pump system to improve energy utilization rate.
About the connection of central heating system and earth-source hot-pump system, prior art much all discloses, and repeats no more herein.
In embodiments of the present invention, compound district heating and cooling system is when cooling, and low-temperature receiver based on described earth-source hot-pump system 3 and ice conserve cold refrigeration system 4, described central cooling system 2 is as peak regulation.
Compound district heating and cooling system of the present invention adopts large temperature difference cold supply system, backwater temperature difference becomes large, then refrigeration distance becomes large, technique is comparatively simple, it is comparatively easy to realize, and effectively can reduce the transmission & distribution energy consumption of chilled water conveying system, reduces the supply water yield of chilled water system, reduce the consumption of water resource, the scale of chilled water subsystem can be reduced simultaneously.Secondly, the compound cooling installation scheme adopting hot water type lithium bromide absorption cooling water unit and centrifugal electric Refrigeration Technique to combine.I.e. Absorption Refrigerator (first order is just cold) and centrifugal refrierator (second level deep cooling) tandem work, cooling temperature scope is reached 10 DEG C (13 DEG C-3 DEG C), achieve " large temperature difference cooling ", expand cooling scope to 5 kilometers by traditional 3 kilometers.Reduce the caliber requirement of cooling pipe network, heating and cooling caliber is mated mutually, " cold and hot same net " is accomplished.
Secondly, the compound cooling installation scheme adopting hot water type lithium bromide absorption cooling water unit and centrifugal electric Refrigeration Technique to combine.I.e. Absorption Refrigerator (first order is just cold) and centrifugal refrierator (second level deep cooling) tandem work, cooling temperature scope is reached 10 DEG C (13 DEG C-3 DEG C), achieve " large temperature difference cooling ", expand cooling scope to 5 kilometers by traditional 3 kilometers.Reduce the caliber requirement of cooling pipe network, heating and cooling caliber is mated mutually, " cold and hot same net " is accomplished.In the present embodiment, as shown in Figure 5, it be 7100KW (2000RT) centrifugal unit and 4 refrigerating capacitys is 7100KW (2000RT) hot water absorption chiller that 4 refrigerating capacitys have been installed at central refrigerating station, maximum sharpness cooling ability 56270kW (16000RT).Total is DN700 for cold water pipe caliber, service building area about 900,000 square metres.
Fig. 6 is the system schematic of a specific embodiment of compound district heating and cooling system of the present invention; Fig. 7 is the structural representation of compound district heating and cooling system embodiment illustrated in fig. 6.In this specific embodiment, for the planning situation of a certain garden and the energy supply situation of periphery, adopt compound green, low-carbon energy supply option, in conjunction with periphery greenery patches situation, adopt thermal source based on earth-source hot-pump system, municipal heat supply network compound heat supply scheme as a supplement.
In order to realize the energy supply of whole garden, intend the energy implementing though adopting " station, a source two multitube net ".
" source "---refer to the thermoelectricity center in garden.At the thermoelectricity center of garden, utilize existing place, then extend 1 9E type gas combustion-gas vapor combined cycle unit, profit uses it as thermal source, for garden solves the heating demand of 70%.Build a central refrigerating station again at thermoelectricity center, refrigeration scale is 80MW, and wherein 40MW utilizes generating waste-heat to freeze simultaneously, and remaining 40MW realizes large temperature difference cooling by adopting ice storage technology, improves the economy of system.
" two stations "---refer at park building 2 energy source stations.Carry from thermoelectricity center the high-temperature-hot-water of coming first to enter energy source station, adopt large temperature difference heat-exchange unit at energy source station, after exchanging low-temperature water heating for, be delivered to each user of garden.Wherein 1# energy source station is also provided with earth-source hot-pump system and ice-storage system, winter, and a thermal source part for the external heat supply of 1# energy source station is the heat of coming from thermoelectricity center, the hot water that another part provides for earth-source hot-pump system; In summer, 1# energy source station externally can also realize central cooling, and cooling low-temperature receiver combines the low-temperature cold water provided for the earth-source hot-pump system in energy source station and ice-storage system.2# energy source station carries the high-temperature-hot-water of coming and low-temperature cold water to realize the external heating and cooling of Summer and winter by utilizing from steam power plant completely.
" multitube net "---refer to the existing DN800 heating power main line running through north and south in garden, and this heating power main line enter garden after to the once pipeline of two energy source stations, also have from energy source station out to the secondary pipeline of each user of garden in addition.
The equipment arranged in each station is as shown in table 1 below, and table 2 is energy supply device category in each station.
Energy supply mode and ability in each station of table 1
Energy supply device category table in each station of table 2
Compound district heating and cooling system of the present invention, utilizes large temperature difference technology, expands the conveying capacity of original pipe network; When not increasing new source point, make full use of the energy supply of existing resource feasible region.That is, make full use of the hot-cool demand that regenerative resource solves garden, reach maximise power-saving, the lowest coursing cost; Make full use of regional location advantage, utilize municipal heat supply network supplementing as thermal source, thus the maximized security reliability that ensure that system cloud gray model; Make full use of residual heat of electric power plant, cooling in summer, improve efficiency of energy utilization.
Apply specific embodiment in the present invention to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.

Claims (8)

1. a compound district heating and cooling system, be district's intra domain user cooling and heat supply by region transmission pipeline network, it is characterized in that, described compound heating and cooling system comprises central heating system, central cooling system, earth-source hot-pump system and ice conserve cold cold supply system;
Described earth-source hot-pump system connects described central heating system and central cooling system respectively, and described ice conserve cold cold supply system connects described central cooling system, and described central heating system and central cooling system are arranged on the central energy supply station in described region;
According to the greenery patches situation in described region and energy supply end load, multiple earth-source hot-pump system is set, to provide the heating compensation to described energy supply end; During heat supply, thermal source based on described earth-source hot-pump system, described central heating system is as peak regulation;
According to the energy supply end load in described region, multiple ice conserve cold cold supply system is set, to provide, the cooling of described energy supply end is compensated; During cooling, low-temperature receiver based on described earth-source hot-pump system and ice conserve cold refrigeration system, described central cooling system is as peak regulation.
2. compound district heating and cooling system according to claim 1, is characterized in that, described central heating system adopts gas combustion-gas vapor combined cycle unit, adopts high temperature municipal administration hot water as driving heat source.
3. compound district heating and cooling system according to claim 2, it is characterized in that, described compound heating and cooling system also comprises multiple large temperature difference heat-exchange unit, connect described central heating system, after hot water in described central heating system is carried out secondary heat exchange, be delivered to described district intra domain user.
4. compound district heating and cooling system according to claim 3, is characterized in that, described large temperature difference heat-exchange unit and earth-source hot-pump system, ice-storage system are arranged in the multiple energy source stations in described region.
5. compound district heating and cooling system according to claim 1, it is characterized in that, described central cooling system adopts large temperature difference cooling unit, comprise first order refrigeration unit and second level refrigeration unit, described first order refrigeration unit and second level refrigeration unit tandem working, to realize large temperature difference cooling;
Described first order refrigeration unit comprises multiple stage absorption refrigeration unit, carries out first order refrigeration, generates a cold water;
Described second level refrigeration unit comprises multiple stage centrifugal refrigerating unit, carries out second level refrigeration, generates secondary cold water.
6. compound district heating and cooling system according to claim 3, is characterized in that, described absorption refrigeration unit is lithium bromide absorption refrigerating set.
7. compound district heating and cooling system according to claim 1, is characterized in that, described region transmission pipeline network carries hot water when heat supply, carries cold water when cooling.
8. compound district heating and cooling system according to claim 1, is characterized in that, described central cooling system is electric refrigeration system or lithium bromide absorption chiller system.
CN201510293887.2A 2015-06-01 2015-06-01 A kind of compound district heating and cooling system Active CN104864631B (en)

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CN204718180U (en) * 2015-06-01 2015-10-21 北京京能未来燃气热电有限公司 A kind of compound district heating and cooling system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4103706A (en) * 1975-05-21 1978-08-01 Canada Square Management Ltd. Reservoir
CN201104041Y (en) * 2007-11-15 2008-08-20 南京五洲制冷集团有限公司 Large temperature difference low-temperature water supply units
CN101344291A (en) * 2008-08-19 2009-01-14 华南理工大学 High-efficiency energy-saving air conditioning system used for area cold supplying and its implementing method
CN103256119A (en) * 2012-06-19 2013-08-21 湖南大学 Integration system for religion architecture
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