CN101893293B - Centralized multi-connected cold (heat) source central air conditioning system - Google Patents

Centralized multi-connected cold (heat) source central air conditioning system Download PDF

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CN101893293B
CN101893293B CN201010204530XA CN201010204530A CN101893293B CN 101893293 B CN101893293 B CN 101893293B CN 201010204530X A CN201010204530X A CN 201010204530XA CN 201010204530 A CN201010204530 A CN 201010204530A CN 101893293 B CN101893293 B CN 101893293B
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heat
source
exchange
water
pipe
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CN101893293A (en
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方国明
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方国明
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/10Geothermal energy

Abstract

The invention discloses a centralized multi-connected cold (heat) source central air conditioning system which comprises a central air conditioning device, a cold/heat source system and a circulation pipeline system, wherein the central air conditioning device comprises water-cooling heat pump type central air conditioners in a plurality of regions, the cold/heat source system comprises a plurality of heat exchange systems which are connected in parallel, the connection pipe of each heat exchange system is provided with a corresponding temperature-difference electrically operated valve, and the opening of the valve is controlled by the temperature of heat exchange media and cold/heat sources. By decomposing a bigger simplex central air conditioning device into the smaller regional central air conditioners, the invention thoroughly eliminates energy consumption caused by pipeline insulation, improves the safety and the heat exchange efficiency of the central air conditioning, lowers the operating cost of the central air conditioning system by using the multiple cold/heat sources, and utilizes energy in natural environment and wastes to the greatest extent, thereby achieving the purpose of energy saving and consumption reduction.

Description

Centralized multi-connected cold (heat) source central air conditioner system
Technical field
The present invention relates to a kind of air handling system, refer more particularly to a kind of loss less and take full advantage of centralized multi-connected cold (heat) the source central air conditioner system of natural environment energy.
Background technology
in air-conditioning system, common domestic air conditioner, comprise compressor, be arranged on indoor evaporimeter and be arranged on outdoor condenser, under the effect of compressor, cold-producing medium is delivered to indoor cold or heat in outdoor condenser and then is diffused in atmosphere or absorbs heat from atmosphere by closed conduct, complete the air conditioning process, installation due to off-premises station, easily destroy the attractive in appearance of external wall, and the easy dust stratification of condenser fin, cause heat exchanger effectiveness to reduce, therefore for relatively large air-conditioning system and inapplicable, the general larger centralized secondary heat exchange of central air conditioning plant employing system, by being provided with compressor, the unit of water-cooled evaporimeter and water-cooled condenser is placed in reserved area, the chilled water that unit is produced or hot water are sent into by pipeline and are located at indoor airhandling equipment or end chilled water device, reach the purpose that air-conditioning is regulated, and the cooling water of water-cooled condenser is disposed in atmosphere by cooling tower, be CN200310117449.8 as China Patent No., name is called the patent of invention of energy-saving central air conditioning system, comprise be used to the main frame that air conditioning needed cold (heat) water source is provided, be used for the unit chilled water is transported to the chilled water device of airhandling equipment or end, be used for air cooling-down, heating, humidification, dehumidifying and the end equipment of purification filtering and be used for unit, airhandling equipment and air-conditioning process carry out artificial or automatically regulate and the air-conditioner control system of monitoring, described air-conditioner control system is processed according to the dynamic changing data of a large amount of Real-time Collections, draw the optimal dynamic operating instruction of cooling on demand, real-time monitoring is one of " cold-storage operation " or " letting cool operation " two kinds of patterns, although this system can be used for all types of central air conditioner systems, optimization by air-conditioner control system, can reach the saving electric energy, low consumed effect is fallen, but because the pipeline of chilled water is longer, through complex circuit, make the heat insulating work amount of pipeline larger, cost of manufacture is higher, cold or thermal losses in transmitting procedure are more, be unfavorable for the energy-saving and cost-reducing of air-conditioning, the heat of discharging can only be by cooling tower to airborne release, environment is exerted a certain influence, and also there is consumption to a certain degree in cooling water, simultaneously, the central air-conditioning unit of concentrating is huge, floor space is more, foundation requirement is higher, give the setting of unit and install and all bring some inconvenience, also there is certain hidden danger in safe operation to unit.
Summary of the invention
The present invention mainly solves chilled water or the hot water pipeline technical problem that length, heat insulating work amount are large, loss is higher and Cooling and Heat Source is single of ordinary central air-conditioner system, solve simultaneously the deficiency that larger central air conditioner system unit is huge, occupations of land is more, the foundation requirement higher-security is not high, installation and maintenance are difficult, provide a kind of and be provided with a plurality of Cooling and Heat Source, loss is less, installation and maintenance are convenient, can take full advantage of centralized multi-connected cold (heat) the source central air conditioner system of natural environment and discarded object energy.
In order to solve the technical problem of above-mentioned existence, the present invention adopts following technical proposals:
centralized multi-connected cold of the present invention (heat) source central air conditioner system comprises central air conditioning plant, cold (heat) origin system and circulating pipe system, described central air conditioning plant comprises a plurality of regional central air conditionings, described regional central air conditioning is water cooling heat pump type, described circulating pipe system comprises into water supervisor and water outlet supervisor, water inlet supervisor be connected with water outlet respectively with regional central air conditioning be connected (heat) origin system and be connected, the cooling water pipe influent side of described regional central air conditioning is connected with the water inlet supervisor, the water outlet side of cooling water pipe is connected with the water outlet supervisor, described cold (heat) origin system comprises a plurality of heat-exchange systems parallel with one another, the tube connector of described each heat-exchange system is provided with corresponding temperature difference motor-driven valve, described temperature difference motor-driven valve comes to be equipped with corresponding central air conditioning in by-pass valve control unlatching regional by the temperature that the heat transferring medium in circulation line is imported and exported the temperature difference and cold (heat) source, influencing each other between air conditioner is less, less central air conditioner system cost is low, easy for installation, floor space is little, energy loss, energy-conserving and environment-protective, the heat transferring medium parallel connection of a plurality of Cooling and Heat Source concentrates in same circulation line, make the connection of central air conditioning become more convenient and reasonable, adaptive capacity to load fluctuation is stronger, simultaneously, circulation line can be taked Insulation, simplified the mounting process of pipeline, reduced cost of manufacture, the temperature difference motor-driven valve in each loop can be according to the temperature of heat transferring medium and Cooling and Heat Source, the comprehensive unlatching of determining each heat-exchange system, situation according to different load, when reducing energy resource consumption, take full advantage of the energy of Cooling and Heat Source.
as preferably, described regional central air conditioning comprises unit and some fan coils, described unit comprises compressor, water cooled condenser and control device, described fan coil is connected with unit by refrigerator pipes respectively, the influent side pipeline of described cooling water pipe is provided with the driving water pump, butterfly valve, check (non-return) valve, Pressure gauge and shockproof flexible pipe, the water outlet side pipeline of described cooling water pipe is provided with butterfly valve, Pressure gauge and shockproof flexible pipe, described central air conditioning also is provided with waste-heat recovery device and health hot water heating storage bin, every regional central air conditioning directly connects circulation line by driving water pump and check (non-return) valve, a plurality of fan coils can satisfy instructions for use, shockproof flexible pipe can be eliminated pipeline resonance, waste-heat recovery device and health hot water heating storage bin can take full advantage of the heat generation health hot water that central air conditioning is discharged, saved the energy.
As preferably, described cold (heat) origin system comprise the air-source heat-exchange system, source heat-exchange system, water source heat-exchange system and wastewater heat exchange system, described heat-exchange system is parallel with one another and be connected with water outlet with water inlet supervisor respectively and be connected, dissimilar heat-exchange system parallel combination, can take full advantage of the absorption equilibrium function of the Nature and discarded object, reduce the consumption of the energy, reduce the use cost of air-conditioning.
as preferably, described wastewater heat exchange system comprises the wastewater heat exchange device, waste water temperature difference motor-driven valve, connecting pipe, described wastewater heat exchange device is placed in wastewater disposal basin, described connecting pipe comprises water inlet pipe and outlet pipe, described water inlet pipe is connected with the water inlet supervisor, described outlet pipe is connected with the water outlet supervisor, described waste water temperature difference motor-driven valve is located on inlet channel, also be provided with butterfly valve on described water inlet pipe, Pressure gauge and thermometer, also be provided with butterfly valve on described outlet pipe, Pressure gauge and thermometer, take full advantage of the waste water of building discharging and the temperature difference between heat transferring medium, by the wastewater heat exchange system, cold or heat that central air conditioning is discharged are taken away by waste water, make that in the waste water of discharging, Conversion of Energy is useful energy, belong to the utilization of resource regeneration circulation comprehensive.
as preferably, source, described ground heat-exchange system comprises buried source heat exchanger, ground source temperature difference motor-driven valve and connecting pipe, described connecting pipe comprises water inlet pipe and outlet pipe, described water inlet pipe is connected with the water inlet supervisor, described outlet pipe is connected with the water outlet supervisor, source, described ground temperature difference motor-driven valve is located on inlet channel, also be provided with butterfly valve on described water inlet pipe, Pressure gauge and thermometer, also be provided with butterfly valve on described outlet pipe, Pressure gauge and thermometer, in the winter time during air-conditioning heating, the condenser of central air conditioner recirculated water of low temperature enters the circulation supervisor also and then the inflow place buried tube heat exchanger, absorb the condenser that reenters central air conditioning after stratum heat heats up by ground heat exchanger, with the thermal release that absorbs out, by source, ground heat-exchange system, take full advantage of the thermal balance function of the earth, with the cold of discharging or transfer of heat in the stratum with very big accumulation of energy.
as preferably, described water source heat-exchange system comprises the water source heat exchanger, water source temperature difference motor-driven valve, connecting pipe and water source water pump, water intake well, back water well, described connecting pipe comprises water inlet pipe and outlet pipe, described water inlet pipe is connected with the water inlet supervisor, described outlet pipe is connected with the water outlet supervisor, described water source temperature difference motor-driven valve and water source water pump are located on inlet channel, also be provided with butterfly valve on described water inlet pipe, Pressure gauge and thermometer, also be provided with butterfly valve on described outlet pipe, Pressure gauge and thermometer, the water source heat exchanger comprises primary side loop and secondary side circuit, heat transferring medium flows into the primary side loop of water source heat exchanger by water source temperature difference motor-driven valve, water source water pump string is serially connected in secondary side circuit, with the adiabatic exchange of heat transferring medium in the phreatic water that extracts in water intake well or surface water and primary side loop, the cold that central air conditioning is discharged or transfer of heat are to underground water or surface water place, take full advantage of the energy in underground water or surface water, used phreatic water or surface water send back in back water well again, saved resource.
as preferably, described air-source heat-exchange system comprises the open type heat exchange columns, air-source temperature difference motor-driven valve and connecting pipe, described connecting pipe comprises water inlet pipe and outlet pipe, described water inlet pipe is connected with the water inlet supervisor, described outlet pipe is connected with the water outlet supervisor, described air-source temperature difference motor-driven valve is located on water inlet pipe, described water inlet pipe is provided with butterfly valve, Pressure gauge and thermometer, also be provided with butterfly valve on described outlet pipe, Pressure gauge and thermometer, by the air-source heat-exchange system, utilize the huge thermal capacitance equilibrium function of atmosphere, the cold that condenser is discharged or heat diffusion are in air, reach energy-conservation purpose.
as preferably, described air-source heat-exchange system also comprises the air-source heat exchanger, described air-source heat exchanger comprises the first heat exchange pipeline and the second heat exchange pipeline, described the first heat exchange pipeline is connected in parallel by tube connector and circulation line, described the second heat exchange pipeline is connected in series by tube connector and open type heat exchange columns, also be provided with cooling water pump and water supply tank on described the second heat exchange pipeline, circulation line and open type heat exchange columns are separated, pollution and the loss that can prevent the interior heat transferring medium of circulation line from directly contacting with atmosphere when the heat exchange columns evaporation and heat-exchange and cause, keep the heat transferring medium cleaning in circulation line, when summer air-conditioning freezes, the condensation heat of central air conditioning enters circulation line water inlet supervisor also by heat transferring medium and then flows into the first heat exchange pipeline of air-source heat exchanger, return to the outlet pipe of circulation line after cooling water temperature by air-source heat exchanger the second heat exchange pipeline, simultaneously, the cooling water that absorbs after heat also heats up passes through open type heat exchange columns evaporation and heat-exchange, with the heat of vaporization that absorbs in atmosphere.
As preferably, described pipe-line system is provided with expansion tank, and the heat transferring medium of pipe-line system is anti-icing fluid,
Can provide certain buffering under different operating modes, guarantee the safe operation of e-quipment and pipe, simultaneously, expansion tank can provide the water yield to replenish to circulation line again.
As preferably, described pipe-line system is provided with the solution concentration automaton, and solution concentration is controlled automatically
But the concentration of device Real Time Monitoring anti-icing fluid is added at any time and discharges according to designing requirement, has guaranteed the system safety operation under different operating modes.
As preferably, the control method of described centralized multi-connected cold heat-source central air-conditioning system is as described below, central air conditioner system comprises regional central air conditioning, cold (heat) origin system and circulating pipe system, described cold (heat) origin system by the wastewater heat exchange system, source heat-exchange system, water source heat-exchange system, air-source heat-exchange system form or formed by wherein two or three heat-exchange systems, the order that each heat-exchange system puts into operation is: wastewater heat exchange system-source, ground heat-exchange system-water source heat-exchange system-air-source heat-exchange system, control method comprises the steps:
When getting in the winter time dim operation, the thermal source minimum temperature scope that controller is set is 2~7 ℃, and the setting temperature range of heat transferring medium is 2~7 ℃;
1) open regional central air conditioning, controller is measured the temperature of heat transferring medium and thermal source;
2) when wastewater temperature is set the thermal source minimum temperature greater than controller, open waste water temperature difference motor-driven valve, the wastewater heat exchange system puts into operation;
3) when the temperature difference of the heat transferring medium of turnover wastewater heat exchange device greater than setting the temperature difference or wastewater temperature when setting minimum temperature, switch to i.e. the source heat-exchange system of next order heat-exchange system, open source, ground temperature difference motor-driven valve, source, ground heat-exchange system puts into operation, heat transferring medium flows into ground heat exchanger, simultaneously, when wastewater temperature when setting minimum temperature, the wastewater heat exchange system closing;
4) when the heat transferring medium temperature difference of turnover ground heat exchanger greater than setting the temperature difference or formation temperature when setting minimum temperature, switching to next order heat-exchange system is the water source heat-exchange system, open the moving valve of water source thermoelectric, open the water source water pump, the water source heat-exchange system puts into operation, heat exchanging medium flow entry source heat exchanger, simultaneously, when setting minimum temperature, close source, ground heat-exchange system when the stratum temperature;
5) when the heat transferring medium temperature difference of Inlet and outlet water source heat exchanger when setting the temperature difference, switching to next order heat-exchange system is the air-source heat-exchange system, open air-source temperature difference motor-driven valve, the air-source heat-exchange system puts into operation, and heat transferring medium flows into the air-source heat exchanger;
During refrigerating operaton, the low-temperature receiver maximum temperature scope that controller is set is 34~38 ℃ in summer, and the setting temperature range of heat transferring medium is 2~7 ℃;
A) open regional central air conditioning, controller is measured the temperature of heat transferring medium and low-temperature receiver;
B) when wastewater temperature when setting maximum temperature, open waste water temperature difference motor-driven valve, the wastewater heat exchange system puts into operation;
C) when the heat transferring medium temperature difference of turnover wastewater heat exchange device greater than setting the temperature difference or wastewater temperature when setting maximum temperature, switch to i.e. the source heat-exchange system of next order heat-exchange system, open source, ground temperature difference motor-driven valve, source, ground heat-exchange system puts into operation, heat transferring medium flows into ground heat exchanger, simultaneously, when setting maximum temperature, close the wastewater heat exchange system when wastewater temperature;
D) when the heat transferring medium temperature difference of turnover ground heat exchanger greater than setting the temperature difference or formation temperature when setting maximum temperature, switching to next order heat-exchange system is the water source heat-exchange system, open the moving valve of water source thermoelectric, open the water source water pump, the water source heat-exchange system puts into operation, heat exchanging medium flow entry source heat exchanger, simultaneously, when setting maximum temperature, close source, ground heat-exchange system when the stratum temperature;
E) when the heat transferring medium temperature difference of Inlet and outlet water source heat exchanger when setting the temperature difference, switching to next order heat-exchange system is the air-source heat-exchange system, open air-source temperature difference motor-driven valve, the air-source heat-exchange system puts into operation, and heat transferring medium flows into the air-source heat exchanger;
when central air-conditioning system puts into operation, heat transferring medium and cold (heat) source that the order that comes into operation according to predefined cold (heat) source and controller are measured, controller determines the unlatching of each heat-exchange system, when the first order heat-exchange system can not satisfy the burden requirement of central air conditioner system, open the second order heat-exchange system, by that analogy, until the heat-exchange system of last order puts into operation, guarantee that system the most rationally moves, because waste water is discarded object, stratum energy or underground water and surface water are all green energy resources, all available throughout the year, therefore corresponding heat-exchange system does not consume any resource, do not produce other any expenses except safeguarding the expense that produces, belong to the resource regeneration comprehensive utilization, and the air-source heat-exchange system is also to have utilized the energy in the atmosphere, except the blower fan power consumption and cooling-water consumption of heat exchange columns, do not consume other energy yet, also belong to comprehensive utilization of resources, simultaneously, cold (heat) source or a huge storage body, can make the operation of air-conditioning system more steady.
The invention has the beneficial effects as follows: single central air conditioning plant that will be larger is decomposed into some less regional central air conditionings, thoroughly eliminated the energy consumption that causes because of pipe insulation, installation and maintenance cost have been reduced, improved the security of central air-conditioning, the installation and maintenance of air-conditioning system is convenient; The use of a plurality of Cooling and Heat Source, reduced the operating cost of central air conditioner system, the use of the temperature difference motor-driven valve in different Cooling and Heat Source heat-exchange systems loop, reasonable distribution flow into the heat transferring medium flow of each heat-exchange system, maximally utilise the energy in natural environment and discarded object, reached energy-saving and cost-reducing purpose.
Description of drawings
Fig. 1 is the structural representation of the first embodiment of the present invention.
Fig. 2 is the central air conditioning plant structural representation in Fig. 1.
Fig. 3 is the air-source heat-exchange system structural representation in Fig. 1.
Fig. 4 is the wastewater heat exchange system architecture schematic diagram in Fig. 1.
Fig. 5 is the structural representation of the second embodiment of the present invention.
Fig. 6 is the structural representation of the third embodiment of the present invention.
Fig. 7 is source, the ground heat-exchange system structural representation in Fig. 5.
Fig. 8 is the water source heat-exchange system structural representation in Fig. 6.
1. regional central air conditionings in figure, 11. the unit with waste-heat recovery device, 12. fan coil, 13. driving water pump, 14. shockproof flexible pipe, 15. health hot water heating storage bin, 2. water inlet is responsible for, 21. expansion tank, 3. water outlet is responsible for, 4. air-source heat-exchange system, 41. air-source heat exchanger, 42. open type heat exchange columns, 43. air-source temperature difference motor-driven valve, 44. cooling water pump, 45. water supply tank, 5. wastewater heat exchange system, 51. wastewater heat exchange device, 52. waste water temperature difference motor-driven valve, 53. wastewater disposal basin, 6. source heat-exchange system, 61. ground source heat exchanger, 62. source, ground temperature difference motor-driven valve, 7. water source heat-exchange system, 71. water source heat exchanger, 72. water source temperature difference motor-driven valve, 73. water source water pump, 74. water intake well, 75. back water well.
The specific embodiment
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment one: centralized multi-connected cold (heat) the source central air conditioner system of the present embodiment, as shown in Figure 1,
comprise central air conditioning plant, cold and heat source system and circulating pipe system, circulating pipe system comprises into water supervisor 2 and water outlet supervisor 3, the water inlet supervisor is connected with water outlet respectively and is connected with cold and heat source system with central air conditioning plant, expansion tank 21 is installed on cycle cooling plating drum, heat transferring medium in cycle cooling plating drum is anti-icing fluid, pipe-line system also is designed with the solution concentration automaton, but the concentration of Real-Time Monitoring and control anti-icing fluid, central air conditioning plant comprises the central air conditioning 1 in five zones, as shown in Figure 2, central air conditioning is water cooling heat pump type, comprise unit 11 and some fan coils 12, unit comprises compressor, water cooled condenser and control device, fan coil is arranged in the room, fan coil is connected with unit by refrigerator pipes respectively, and by cold-producing medium, the heat in the room or cold are brought in the condenser of unit, the cooling water pipe influent side of water-cooled condenser is connected with the water inlet supervisor, the water outlet side of cooling water pipe is connected with the water outlet supervisor, need cold or the heat of discharging to bring to circulation line by tube connector, and be diffused in corresponding Cooling and Heat Source, on cooling water pipe influent side pipeline, butterfly valve is installed, shockproof flexible pipe 14, check (non-return) valve, Pressure gauge and driving water pump 13, on the water outlet side pipeline of cooling water pipe, butterfly valve is installed successively, shockproof flexible pipe and Pressure gauge, central air conditioning also is designed with waste-heat recovery device and health hot water heating storage bin 15, cold water is through the condenser circulating-heating of central air conditioning and be stored in and can offer at any time the user in health hot water heating storage bin and use, cold and heat source system comprises wastewater heat exchange system 5 and air-source heat-exchange system 4, as shown in Figure 3 and Figure 4, two heat-exchange systems are parallel with one another and be connected with circulation line, the wastewater heat exchange system comprises wastewater heat exchange device 51, waste water temperature difference motor-driven valve 52, connecting pipe, connecting pipe comprises water inlet pipe and outlet pipe, waste water temperature difference motor-driven valve is arranged on water inlet pipe, butterfly valve, Pressure gauge and thermometer also are installed on water inlet pipe, butterfly valve, Pressure gauge and thermometer are installed on outlet pipe, and the wastewater heat exchange device is arranged in wastewater disposal basin 53, the air-source heat-exchange system comprises air-source heat exchanger 41, open type heat exchange columns 42, air-source temperature difference motor-driven valve 43 and connecting pipe, connecting pipe comprises water inlet pipe and outlet pipe, air-source temperature difference motor-driven valve is arranged on water inlet pipe, butterfly valve also is installed on water inlet pipe, Pressure gauge and thermometer, butterfly valve also is installed on outlet pipe, Pressure gauge and thermometer, the air-source heat exchanger comprises the first heat exchange pipeline and the second heat exchange pipeline, the first heat exchange pipeline is connected in parallel by tube connector and circulation line, the second heat exchange pipeline is connected in series by tube connector and open type heat exchange columns, cooling water pump 44 and water supply tank 45 also are installed on the second heat exchange pipeline, the course of work of the present embodiment is: when freezing the cycle in summer, the zone central air conditioning is opened, each fan coil work, opening needs to use the butterfly valve of regional central air conditioning cooling circuit and drives water pump, make the anti-icing fluid in circulation line flow into condenser, the heat that absorbs from the room is delivered on circulation line by condenser, by job order, at first open butterfly valve and the waste water temperature difference motor-driven valve of wastewater heat exchange system circuit, the wastewater heat exchange system puts into operation, can't absorb the condensation heat of central air conditioning fully when the wastewater heat exchange system circuit, the import and export temperature difference that makes wastewater heat exchange system circuit anti-icing fluid during greater than 5 ℃ or wastewater temperature greater than 35 ℃, the air-source heat-exchange system puts into operation, air-source temperature difference motor-driven valve is opened, anti-icing fluid flows into the first heat exchange pipeline of air-source heat exchanger, with come back to circulation line after the adiabatic exchange cooling of cooling water in the second heat exchange pipeline and enter the condenser of central air conditioning, cooling water after heating up in the second heat exchange pipeline passes through open type heat exchange columns evaporation and heat-exchange and radiating and cooling, and come back to circulation heat absorption in the air-source heat exchanger, water replanishing device can replenish the cooling water inflow because of blowdown or evaporation loss, make cooling water inflow keep constant, and cold water through the waste-heat recovery device of central air conditioner system repeatedly circulating-heating form the high-temperature-hot-water of 50~60 ℃ and be stored in health hot water heating storage bin for the user.when heating in the winter time the cycle, the cold that zone central air conditioning condenser produces enters circulation line, in circulation line, the anti-icing fluid of lower temperature absorbs by being placed on wastewater heat exchange device in wastewater disposal basin that heat in waste water heats up and the condenser that again enters into central air conditioning absorbs cold, system can not satisfy the dim ability of adopting of central air conditioning when wastewater heat exchange, make the anti-icing fluid of wastewater heat exchange system circuit import and export the temperature difference greater than the wastewater temperature in 5 ℃ or wastewater disposal basin during less than 5 ℃, the air-source heat-exchange system puts into operation, air-source temperature difference motor-driven valve is opened, anti-icing fluid flows into the first heat exchange pipeline of air-source heat exchanger, with come back to circulation line after the adiabatic exchange cooling of cooling water in the second heat exchange pipeline and enter the condenser of central air conditioning, cooling water after heating up in the second heat exchange pipeline passes through open type heat exchange columns evaporation and heat-exchange and radiating and cooling, and come back to circulation heat absorption in the air-source heat exchanger, operating cost descends 30%~40% than common central air conditioner system, expansion tank and solution concentration automaton also do not freeze heat transferring medium under arctic weather, guaranteed the safety of pipeline and equipment,
The system control method of the present embodiment is as described below:
When getting in the winter time dim operation, the thermal source minimum temperature that controller is set is 5 ℃, and the setting temperature difference of anti-icing fluid is 5 ℃;
1) open regional central air conditioning, controller is measured the temperature of anti-icing fluid and thermal source;
2) during greater than 5 ℃, open waste water temperature difference motor-driven valve when wastewater temperature, the wastewater heat exchange system puts into operation;
3) when the temperature difference of the anti-icing fluid of turnover wastewater heat exchange device greater than 5 ℃ or wastewater temperature during less than 5 ℃, switch to the air-source heat-exchange system, open air-source temperature difference motor-driven valve, the air-source heat-exchange system puts into operation, anti-icing fluid flows into the air-source heat exchanger, simultaneously, when wastewater temperature during less than 5 ℃, the wastewater heat exchange system closing;
During refrigerating operaton, the low-temperature receiver maximum temperature that controller is set is 35 ℃ in summer, and the setting temperature difference of heat transferring medium is 5 ℃;
A) open regional central air conditioning, controller is measured the temperature of anti-icing fluid and low-temperature receiver;
B) during less than 35 ℃, open waste water temperature difference motor-driven valve when wastewater temperature, the wastewater heat exchange system puts into operation;
C) during greater than 35 ℃, switch to the air-source heat-exchange system greater than 5 ℃ or wastewater temperature when the anti-icing fluid temperature difference of turnover wastewater heat exchange device, open air-source temperature difference motor-driven valve, the air-source heat-exchange system puts into operation, and anti-icing fluid flows into the air-source heat exchanger;
embodiment two: centralized multi-connected cold (heat) the source central air conditioner system of the present embodiment, as Fig. 5 and shown in Figure 7, the difference of the present embodiment and embodiment one is, the Cooling and Heat Source of central air conditioner system is different, Cooling and Heat Source in embodiment one is wastewater heat exchange system 5 and air-source heat-exchange system 4, the Cooling and Heat Source of the present embodiment is ground source heat-exchange system 6 and air-source heat-exchange system 4, two heat-exchange system parallel connections also are connected with circulation line, source, ground heat-exchange system comprises ground heat exchanger 61, ground source temperature difference motor-driven valve 62 and connecting pipe, connecting pipe comprises water inlet pipe and outlet pipe, water inlet pipe is connected with the water inlet supervisor, outlet pipe is connected with the water outlet supervisor, source, ground temperature difference motor-driven valve is arranged on inlet channel, butterfly valve also is installed on water inlet pipe, Pressure gauge and thermometer, butterfly valve also is installed on outlet pipe, Pressure gauge and thermometer, heat or cold that the central air conditioning condenser is discharged directly are discharged in the stratum by ground heat exchanger 61, the air-source heat-exchange system of the present embodiment does not comprise air-source heat exchanger 41, anti-icing fluid in circulation line is directly by open type heat exchange columns 42 evaporation and heat-exchanges, water supply tank 45 is connected in the air-source heat-exchange system, what at first put into operation is source, ground heat-exchange system, next is sequentially the air-source heat-exchange system.
embodiment three: centralized multi-connected cold (heat) the source central air conditioner system of the present embodiment, as Fig. 6 and shown in Figure 8, the difference of the present embodiment and embodiment one and embodiment two is, increased the quantity of Cooling and Heat Source, the Cooling and Heat Source of the present embodiment is wastewater heat exchange system 5, source, ground heat-exchange system 6, water source heat-exchange system 7 and air-source heat-exchange system 4, the parallel connection mutually of each heat-exchange system also is connected with circulation line, the order that the Cooling and Heat Source of the present embodiment puts into operation is: be at first the wastewater heat exchange system, secondly be source, ground heat-exchange system, be the water source heat-exchange system more afterwards, be the air-source heat-exchange system at last, the water source heat-exchange system of the present embodiment comprises water source heat exchanger 71, water source temperature difference motor-driven valve 72, connecting pipe and water source water pump 73, water intake well 74, back water well 75, connecting pipe comprises water inlet pipe and outlet pipe, water inlet pipe is connected with the water inlet supervisor, outlet pipe is connected with the water outlet supervisor, water source temperature difference motor-driven valve and water source water pump are arranged on inlet channel, also be provided with butterfly valve on water inlet pipe, Pressure gauge and thermometer, also be provided with butterfly valve on outlet pipe, Pressure gauge and thermometer, the water source heat exchanger comprises primary side loop and secondary side circuit, heat transferring medium flows into the primary side loop of water source heat exchanger by water source temperature difference motor-driven valve, the water source water pump is serially connected in the secondary side circuit of water source heat exchanger, with phreatic water or the adiabatic exchange of the heat transferring medium in surface water and heat exchanger primary side loop, water source of extracting in water intake well, phreatic water or surface water after heat exchange is processed return in back water well 75, fully saved resource.
The other parts of embodiment two and embodiment three all with the appropriate section of embodiment one roughly the same, this paper repeats no more.
Above explanation is not that the present invention has been done restriction; the present invention also is not limited only to giving an example of above-mentioned explanation; the variation that those skilled in the art have done in essential scope of the present invention, retrofit, increase or replace, all should be considered as protection scope of the present invention.

Claims (9)

1. a centralized multi-connected cold (heat) source central air conditioner system, comprise central air conditioning plant, cold (heat) origin system and circulating pipe system, it is characterized in that: described central air conditioning plant comprises a plurality of regional central air conditionings (1), described regional central air conditioning is water cooling heat pump type, described circulating pipe system comprises into water supervisor (2) and water outlet supervisor (3), water inlet supervisor be connected with water outlet respectively with regional central air conditioning be connected (heat) origin system and be connected, the cooling water pipe influent side of described regional central air conditioning is connected with the water inlet supervisor, the water outlet side of cooling water pipe is connected with the water outlet supervisor, described cold (heat) origin system comprises a plurality of heat-exchange systems parallel with one another, the water inlet pipe that each heat-exchange system is connected with water inlet manifold is provided with corresponding temperature difference motor-driven valve, described temperature difference motor-driven valve comes by-pass valve control to open by the import and export temperature difference of recirculated water in corresponding heat-exchange system circulation line and the temperature in corresponding cold (heat) source.
2. centralized multi-connected cold according to claim 1 (heat) source central air conditioner system, it is characterized in that: described regional central air conditioning (1) comprises unit (11) and some fan coils (12), described unit comprises compressor, water cooled condenser and control device, described fan coil is connected with unit by refrigerator pipes respectively, the influent side pipeline of described cooling water pipe is provided with and drives water pump (13), butterfly valve, check (non-return) valve, Pressure gauge and shockproof flexible pipe (14), the water outlet side pipeline of described cooling water pipe is provided with butterfly valve, Pressure gauge and shockproof flexible pipe, described regional central air conditioning also is provided with waste-heat recovery device and health hot water heating storage bin (15).
3. centralized multi-connected cold according to claim 1 (heat) source central air conditioner system, it is characterized in that: described cold (heat) origin system comprise wastewater heat exchange system (5), source heat-exchange system (6), water source heat-exchange system (7) and air-source heat-exchange system (4), described heat-exchange system is parallel with one another and be connected with water outlet with water inlet supervisor and be connected.
4. centralized multi-connected cold according to claim 3 (heat) source central air conditioner system, it is characterized in that: described wastewater heat exchange system (5) comprises wastewater heat exchange device (51), waste water temperature difference motor-driven valve (52), connecting pipe, described wastewater heat exchange device is placed in wastewater disposal basin (53), described connecting pipe comprises water inlet pipe and outlet pipe, described water inlet pipe is connected with water inlet supervisor (2), described outlet pipe is connected with water outlet supervisor (3), described waste water temperature difference motor-driven valve is located on water inlet pipe, also be provided with butterfly valve on described water inlet pipe, Pressure gauge and thermometer, also be provided with butterfly valve on described outlet pipe, Pressure gauge and thermometer.
5. centralized multi-connected cold according to claim 3 (heat) source central air conditioner system, it is characterized in that: source, described ground heat-exchange system (6) comprises buried source heat exchanger (61), ground source temperature difference motor-driven valve (62) and connecting pipe, described connecting pipe comprises water inlet pipe and outlet pipe, described water inlet pipe is connected with water inlet supervisor (2), described outlet pipe is connected with water outlet supervisor (3), source, described ground temperature difference motor-driven valve is located on water inlet pipe, also be provided with butterfly valve on described water inlet pipe, Pressure gauge and thermometer, also be provided with butterfly valve on described outlet pipe, Pressure gauge and thermometer.
6. centralized multi-connected cold according to claim 3 (heat) source central air conditioner system, it is characterized in that: described water source heat-exchange system (7) comprises water source heat exchanger (71), water source temperature difference motor-driven valve (72), connecting pipe and water source water pump (73), water intake well (74), back water well (75), described connecting pipe comprises water inlet pipe and outlet pipe, described water inlet pipe is connected with water inlet supervisor (2), described outlet pipe is connected with water outlet supervisor (3), described water source temperature difference motor-driven valve is located on water inlet pipe, also be provided with butterfly valve on described water inlet pipe, Pressure gauge and thermometer, also be provided with butterfly valve on described outlet pipe, Pressure gauge and thermometer.
7. centralized multi-connected cold according to claim 3 (heat) source central air conditioner system, it is characterized in that: described air-source heat-exchange system (4) comprises open type heat exchange columns (42), air-source temperature difference motor-driven valve (43) and connecting pipe, described connecting pipe comprises water inlet pipe and outlet pipe, described water inlet pipe is connected with water inlet supervisor (2), described outlet pipe is connected with water outlet supervisor (3), described air-source temperature difference motor-driven valve is located on water inlet pipe, described water inlet pipe is provided with butterfly valve, Pressure gauge and thermometer, also be provided with butterfly valve on described outlet pipe, Pressure gauge and thermometer.
8. according to claim 3 or 7 described centralized multi-connected cold (heat) source central air conditioner systems, it is characterized in that: described air-source heat-exchange system also comprises air-source heat exchanger (41), described air-source heat exchanger comprises the first heat exchange pipeline and the second heat exchange pipeline, described the first heat exchange pipeline is connected in parallel by tube connector and circulation line, described the second heat exchange pipeline is connected in series by tube connector and open type heat exchange columns, also is serially connected with cooling water pump (44) and water supply tank (45) on described the second heat exchange pipeline.
9. a centralized multi-connected cold (heat) source central air conditioner system control method, central air conditioner system comprises regional central air conditioning, cold (heat) origin system and circulating pipe system, described cold (heat) origin system by the wastewater heat exchange system, source heat-exchange system, water source heat-exchange system, air-source heat-exchange system form or formed by wherein two or three heat-exchange systems, the order that each heat-exchange system puts into operation is: wastewater heat exchange system-source, ground heat-exchange system-water source heat-exchange system-air-source heat-exchange system, control method comprises the steps:
When getting in the winter time dim operation, the thermal source minimum temperature scope that controller is set is 2~7 ℃, and the setting temperature range of heat transferring medium is 2~7 ℃;
1) open regional central air conditioning, controller is measured the temperature of heat transferring medium and thermal source;
2) when wastewater temperature is set the thermal source minimum temperature greater than controller, open waste water temperature difference motor-driven valve, the wastewater heat exchange system puts into operation;
3) when the temperature difference of the heat transferring medium of turnover wastewater heat exchange device greater than setting the temperature difference or wastewater temperature when setting minimum temperature, switch to i.e. the source heat-exchange system of next order heat-exchange system, open source, ground temperature difference motor-driven valve, source, ground heat-exchange system puts into operation, heat transferring medium flows into ground heat exchanger, simultaneously, when wastewater temperature when setting minimum temperature, the wastewater heat exchange system closing;
4) when the heat transferring medium temperature difference of turnover ground heat exchanger greater than setting the temperature difference or formation temperature when setting minimum temperature, switching to next order heat-exchange system is the water source heat-exchange system, open the moving valve of water source thermoelectric, open the water source water pump, the water source heat-exchange system puts into operation, heat exchanging medium flow entry source heat exchanger, simultaneously, when setting minimum temperature, close source, ground heat-exchange system when the stratum temperature;
5) when the heat transferring medium temperature difference of Inlet and outlet water source heat exchanger when setting the temperature difference, switching to next order heat-exchange system is the air-source heat-exchange system, opens air-source temperature difference motor-driven valve, the air-source heat-exchange system puts into operation, heat transferring medium flows into the air-source heat exchanger;
During refrigerating operaton, the low-temperature receiver maximum temperature scope that controller is set is 34~38 ℃ in summer, and the setting temperature range of heat transferring medium is 2~7 ℃;
A) open regional central air conditioning, controller is measured the temperature of heat transferring medium and low-temperature receiver;
B) when wastewater temperature when setting maximum temperature, open waste water temperature difference motor-driven valve, the wastewater heat exchange system puts into operation;
C) when the heat transferring medium temperature difference of turnover wastewater heat exchange device greater than setting the temperature difference or wastewater temperature when setting maximum temperature, switch to i.e. the source heat-exchange system of next order heat-exchange system, open source, ground temperature difference motor-driven valve, source, ground heat-exchange system puts into operation, heat transferring medium flows into ground heat exchanger, simultaneously, when setting maximum temperature, close the wastewater heat exchange system when wastewater temperature;
D) when the heat transferring medium temperature difference of turnover ground heat exchanger greater than setting the temperature difference or formation temperature when setting maximum temperature, switching to next order heat-exchange system is the water source heat-exchange system, open the moving valve of water source thermoelectric, open the water source water pump, the water source heat-exchange system puts into operation, heat exchanging medium flow entry source heat exchanger, simultaneously, when setting maximum temperature, close source, ground heat-exchange system when the stratum temperature;
E) when the heat transferring medium temperature difference of Inlet and outlet water source heat exchanger when setting the temperature difference, switching to next order heat-exchange system is the air-source heat-exchange system, opens air-source temperature difference motor-driven valve, the air-source heat-exchange system puts into operation, heat transferring medium flows into the air-source heat exchanger.
CN201010204530XA 2010-06-22 2010-06-22 Centralized multi-connected cold (heat) source central air conditioning system CN101893293B (en)

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