CN109442783A - A kind of cold-heat combined Regional Energy Supply Method of ultrahigh energy efficiency and system - Google Patents
A kind of cold-heat combined Regional Energy Supply Method of ultrahigh energy efficiency and system Download PDFInfo
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- CN109442783A CN109442783A CN201811311950.0A CN201811311950A CN109442783A CN 109442783 A CN109442783 A CN 109442783A CN 201811311950 A CN201811311950 A CN 201811311950A CN 109442783 A CN109442783 A CN 109442783A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/0015—Domestic hot-water supply systems using solar energy
- F24D17/0021—Domestic hot-water supply systems using solar energy with accumulation of the heated water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/02—Domestic hot-water supply systems using heat pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
A kind of cold-heat combined Regional Energy Supply Method of ultrahigh energy efficiency and system, its method includes: (1) refrigerant circuit: carrying out gas-liquid separation and heat exchange to the cryogenic gaseous refrigerant of evaporator output, it is re-compressed into medium temperature and medium pressure superheated refrigerant steam, and respectively enters low temperature side branch and high temperature side branch；(2) high temperature side branch: the degree of superheat of medium temperature and medium pressure superheated refrigerant steam is reduced, it is re-compressed into high-temperature high-pressure refrigerant steam, cool down again through warm condenser condensation, subcooler, then after being depressurized to the pressure of low temperature side by expansion valve, converges with the refrigerant of low temperature side branch；(3) low temperature side branch: medium temperature and medium pressure superheated refrigerant steam enter in low-temperature condenser condense after, converge to form refrigerant air-liquid mixture with the refrigerant of high temperature side branch, then with evaporator output Low Temperature Steam carry out heat exchange.The invention also includes a kind of cold-heat combined Regional Energy supply systems of ultrahigh energy efficiency.The present invention have it is high-efficient, it is stable, the advantages that save the cost, energy-saving effect is significant.
Description
Technical field
The present invention relates to energy technology field, the cold-heat combined Regional Energy Supply Method of especially a kind of ultrahigh energy efficiency and it is
System.
Background technique
Conventional air conditioning system is mainly by refrigerant circulation, cooling water (or air) circulation, chilled water (or air) circulation group
At.The refrigeration duty of air-conditioned room enters refrigerant circulation by evaporator, becomes a part for condensing heat extraction, then pass through cooling water
(or air) cycle bleeder is into atmosphere.Therefore, for conventional air-conditioning refrigeration machine, the condensation heat of air-conditioning system is directly discharged to
It is not used in atmosphere.A large amount of condensation heat is discharged to atmospheric environment when refrigeration unit is run under air conditioning condition, usually
Condensation heat can reach 1.15~1.3 times of refrigerating capacity.A large amount of condensation heat is directly discharged into atmosphere, loses, causes larger in vain
Energy waste, distributing and increasing ambient temperature for these heats cause serious environmental thermal pollution and atmospheric greenhouse
Effect.If being recycled the condensation heat that refrigeration machine is released for heating domestic hot water and production technology hot water, can not only subtract
Few condensation heat thermal pollution caused by environment, but also be a kind of power-economizing method turned waste into wealth.
In recent years, in world wide energy and environment problem be on the rise, to condensing heat of air conditioner system recuperation of heat
It studies also more and more with application.
Existing condensation heat heat recovery technology is will to need the domestic hot-water of heating that cooling medium is replaced to be passed directly into condenser
And iterative cycles improve water temperature, cause condensing pressure fluctuation so greatly, seriously affect the stable operation of refrigeration machine, both increased
The power consumption of compressor, and reduce the service life of compressor.Often temperature is not high enough by the domestic hot-water produced simultaneously, needs to take it
His technical measures, such as using heat pump techniques (air-source or water source) and electric-heating technology or combustion gas as heat recovery system
Auxiliary, if Teat pump boiler will increase a large amount of initial costs.It not only will increase just according to electric heater or oil-burning gas-fired boiler
Investment, and using electricity, fuel oil or gas heating, domestic hot-water is such as provided, then the non-renewable energy that will lead to whole system uses
Efficiency reduces.And simple raising condensation temperature can be such that the efficiency of refrigeration system reduces.
Therefore, it is necessary to further strengthen matched to the global optimization of condensation heat recovery type heat air-conditioning system theoretical and experiment
Research, formulates and optimizes air-conditioning refrigeration system heat recovery technology standards and specifications.
Summary of the invention
The purpose of the present invention is overcome the above-mentioned insufficient of the prior art and provide it is a kind of high-efficient, it is stable, save at
This, the cold-heat combined Regional Energy Supply Method of the significant ultrahigh energy efficiency of energy-saving effect and system.
The technical scheme is that
A kind of cold-heat combined Regional Energy Supply Method of ultrahigh energy efficiency of the present invention, comprising the following steps:
(1) refrigerant circuit: gas-liquid separation and heat exchange are carried out to the cryogenic gaseous refrigerant of evaporator output, it is low to form low temperature
Warm refrigerant steam is pressed through, then is compressed into medium temperature and medium pressure superheated refrigerant steam through low pressure compressor, and respectively enter low temperature side
In branch and high temperature side branch；
(2) high temperature side branch: running under high condensation temperature, reduces the degree of superheat of medium temperature and medium pressure superheated refrigerant steam to meet
The degree of superheat requirement of high pressure compressor, then high-temperature high-pressure refrigerant steam, high-temperature high-pressure refrigerant are compressed into through high pressure compressor
Steam is condensed through warm condenser, subcooler cools down again, then after being depressurized to the pressure of low temperature side by expansion valve, with low temperature side point
The refrigerant on road converges to form refrigerant air-liquid mixture, and the Low Temperature Steam of refrigerant air-liquid mixture and evaporator output carries out
Heat exchange, so that low pressure compressor sucking has the steam of certain degree of superheat；
(3) low temperature side branch: running under lower condensation temperature, and medium temperature and medium pressure superheated refrigerant steam enters cold in low-temperature condenser
After solidifying, converge to form refrigerant air-liquid mixture with the refrigerant of high temperature side branch, refrigerant air-liquid mixture and evaporator are defeated
Low Temperature Steam out carries out heat exchange, so that low pressure compressor sucking has the steam of certain degree of superheat.
Further, it is expanded after the refrigerant air-liquid mixture and the low-temperature steam of evaporator output carry out heat exchange
After valve expansion, low-temperature low-pressure refrigerant is formed, and be evaporated into evaporator, so recycled.
Further, the cryogenic gaseous refrigerant of the evaporator output, which enters, carries out gas-liquid in the gas-liquid separator with backheat
Separation, and the refrigerant of the refrigerant of high temperature side branch and low temperature side branch converges in the regenerator of gas-liquid separator and gas-liquid
Liquid after separating in separator carries out heat exchange, and high pressure liquid refrigerant is subcooled, while has low pressure compressor sucking
Meet the steam of degree of superheat requirement.
Further, in the low temperature side branch, the cooling water in low-temperature condenser after heat exchange heats up is followed by first
Ring water pump and valve are delivered to domestic water or sanitary water region is recycled.
It further, further include the operating procedure of heat recovery water pipeline, specifically:
Domestic hot-water's water supply enters hot water feed-tank from municipal water supply, and hot water follows between heat recovery water pipeline and hot water feed-tank
Ring, hot water is successively heated by subcooler, excessively heat regenerator and warm condenser or hot water is condensed by subcooler and high temperature
Device successively heats；Temperature from low to high, and hot water flow direction with heat transferring medium counter-flow arrangement.
Further, when the inflow temperature of warm condenser reaches set temperature low value, second circulation water pump is opened, simultaneously
The valve for opening municipal water supply, makes part water supply enter solar heat-preservation water tank, enters roof by second circulation water pump lifting
Solar thermal collector absorb heat after, return to solar heat-preservation water tank, enter back into hot water feed-tank, given for domestic hot-water
Water；When the inflow temperature of warm condenser reaches set temperature high level, second circulation water pump stops, while reducing municipal water supply
Valve opening or close solar water heating system.
It further, further include the operating procedure of lubricating oil pipeline, specifically: medium temperature and medium pressure superheated refrigerant steam is through high pressure
Compressor compresses enter oil eliminator, isolate high temperature and pressure at high-temperature high-pressure refrigerant steam, high-temperature high-pressure refrigerant steam
Lubricating oil in refrigerant vapour, the lubricating oil isolated enter oil cooler and are cooled down；Lubricating oil after cooling enters back into
High pressure compressor is recycled.
A kind of cold-heat combined Regional Energy supply system of ultrahigh energy efficiency of the present invention, including refrigerant circuit systems, high temperature
Side branch system and low temperature side branch system；
The refrigerant circuit systems include:
Evaporator absorbs the heat of cooled object, to reach refrigeration, refrigerant, which enters, to be taken back for evaporating by refrigerant
The gas-liquid separator of heat；
Gas-liquid separator with backheat, for separating the gas-liquid mixture of refrigerant, to prevent liquid from entering compressor
It generates liquid hammer, and refrigerating capacity when using liquid re-evaporation after separating in separator, high pressure liquid refrigerant is subcooled, reduces
Restriction loss；
Low pressure compressor compresses it into medium temperature and medium pressure superheat refrigeration for aspirating the low-temp low-pressure superheated refrigerant steam
Agent steam, and respectively enter in low temperature side branch system and high temperature side branch system；
The high temperature side branch system includes:
Heat regenerator is crossed, the mistake of high pressure compressor is met for reducing the degree of superheat of the medium temperature and medium pressure superheated refrigerant steam
Temperature requirement；
High pressure compressor, for medium temperature and medium pressure superheated refrigerant is steam compressed at high-temperature high-pressure refrigerant steam；
Warm condenser, for being condensed to high-temperature high-pressure refrigerant steam；Warm condenser also successively with subcooler, expansion
Valve and gas-liquid separator piping connection with backheat；
The low temperature side branch system includes:
Low-temperature condenser, for condensing to the medium temperature and medium pressure superheated refrigerant steam, low-temperature condenser is also and with backheat
Gas-liquid separator piping connection, the refrigerant for exporting with high temperature side branch system converges in the gas-liquid separator with backheat
It closes, and carries out heat exchange with the Low Temperature Steam of evaporator output, make low pressure compressor sucking that there is the steam of certain degree of superheat.
Wherein, pass through electric T-shaped valve between refrigerant circuit systems and low temperature side branch system and high temperature side branch system
Connection；Or motor-driven valve is equipped between every branch and refrigerant circuit system.
Further, energy supply system further includes heat recovery water pipe-line system, and the heat recovery water pipe-line system includes heat
The water inlet tube of water feed-tank, hot water feed-tank connects municipal water supply system；Or municipal water supply system is through solar water
The water inlet of auxiliary system connection hot water feed-tank；The water outlet of hot water feed-tank successively with subcooler, cross heat regenerator and height
Warm condenser tubes connection；Or the water outlet of hot water feed-tank is successively connect with subcooler and warm condenser pipeline；It is described
The water outlet pipeline of hot water feed-tank connects hot water supply system for domestic use；The water outlet of the warm condenser is through second circulation water
Pump connection hot water feed-tank, the water outlet of warm condenser are equipped with temperature sensor.
Further, the cooling water in the low-temperature condenser after heat exchange heats up is defeated by first circulation water pump and valve
It send to domestic water or sanitary water region and is recycled.
The operation principle of the present invention is that:
The cryogenic gaseous refrigerant come out from evaporator, first passes through the gas-liquid separation with backheat before entering low pressure compressor
Device, low-temperature steam carries out heat exchange with the high temperature refrigerant from warm condenser in regenerator, so that low pressure compressor is inhaled
Enter the steam with certain degree of superheat, low pressure compressor sucks a certain amount of low-temp low-pressure superheated refrigerant steam, is compressed into
After middle benefit gas presses through hot refrigerant vapor refrigerant, into electric T-shaped valve, high temperature is adjusted according to domestic hot-water's demand by electric T-shaped valve
Side and condensation side refrigerant flow.
In high temperature side branch, the superheated refrigerant steam of medium temperature and medium pressure, which first passed through heat regenerator, reduces the degree of superheat, reaches
To saturation state, heat release is to domestic hot-water while reducing the degree of superheat.It is sucked again by high pressure compressor and carries out temperature and pressure
It is promoted again, subsequently into being condensed in warm condenser, by subcooler, then by expansion valve reducing pressure by regulating flow to low temperature side
Converge with low temperature side refrigerant into the gas-liquid separator with backheat after high pressure.
In low temperature side branch, it is directly entered in low-temperature condenser and is condensed by the refrigerant vapour of electric T-shaped valve,
Then enter the gas-liquid separator for taking back heat after converging with the refrigerant of high temperature side.
The refrigerant air-liquid mixture converged, in the gas-liquid separator with backheat with the low-temperature steam of evaporator outlet into
Row heat exchange carries out one not so that the high-temperature high-pressure refrigerant into expansion valve E has certain degree of supercooling in expansion valve
Reversible adiabatic expansion process, the low temperature and low pressure liquid for expanding end of a period enter evaporator and are evaporated.So circulation is completed one and is surpassed
The cold-heat combined circulation of high energy efficiency.
For solar water auxiliary system, city planting ductwork inlet valve aperture is adjusted according to moisturizing demand, needs to heat
Water enter solar heat-preservation water tank, subsequently enter solar thermal collector absorb heat, increase temperature, enter back into domestic hot-water's case
It is mixed with reclaiming system for condensation heat hot water preparing.
Beneficial effects of the present invention:
(1) present invention provides different condensation temperatures, is applicable to the occasion of different heat sources temperature；Recyclable refrigeration system is cold
Solidifying heat reaches 50%-70%, efficiently solves energy waste caused by condensation heat Additional discharges and environmental problem；And system can be reduced
High-grade energy consumption needed for standby production, domestic hot-water.
(2) present invention does not need to take heat pump, combustion gas, and the technical measures such as electricity carry out the second lift of hot water temperature, uses
Solar water is supplemented, cleaning, efficiently；Though initial cost is higher, operating cost reduces about 50% than electricity auxiliary.
(3) present invention uses double-compressor double-condenser refrigeration cycle, it is possible to provide different condensation temperatures is applicable to
The occasion of different heat sources temperature；Since different condensation temperatures corresponds to different pressure, different compressions is can be used in double-compressor
Than height pressure difference is bigger, and energy-saving effect is more obvious.
(4) compression ratio of the high-low pressure compressor of high temperature side and low temperature side is reasonably combined, it is possible to reduce crosses heat loss, can have
Effect reduces total wasted work amount of compressor.
(5) using solar water heating system as auxiliary thermal source, the domestic hot-water that reclaiming system for condensation heat is not produced into
The second lift of trip temperature, but 70-80 DEG C of hot water is directly supplemented when water demand is big；Solar energy as renewable energy,
Reserves are big, and no pollution to the environment.
(6) water outlet of hot water feed-tank is successively connect with subcooler, excessively heat regenerator and warm condenser pipeline, or
The water outlet of hot water feed-tank is successively connect with subcooler and warm condenser pipeline；It is more lower when excessive discharge temperature
The water flow of temperature pass through heat regenerator, when delivery temperature is too low, the water of most of lower temperature be not passed through heat regenerator into
Row heat exchange, to guarantee the stable operation of heat recovery system.
(7) with the gas-liquid separator of recuperation of heat, carry out the low-temperature refrigerant of flash-pot, first pass through band before entering compressor
The gas-liquid separator of recuperation of heat, using in separator separate after liquid re-evaporation when refrigerating capacity, make high pressure liquid refrigerant
Supercooling reduces restriction loss, and guarantees that low pressure compressor sucking has the steam of certain degree of superheat；
(8) need the hot water line that heats successively to pass through subcooler, cross heat regenerator, warm condenser, temperature from low to high, by
Step is heated, and hot water flow direction and heat transferring medium counter-flow arrangement, increases heat transfer efficiency.
(9) system structure is simple, and can be transformed to existing refrigeration system, need to only increase high temperature lateral line and equipment
The preparation that domestic hot-water can be completed, greatlys save cost；
(10) heat for reasonably having recycled each section, reduces the heat exchange area of high/low temperature condenser, and raising system can imitate
Rate 5%-10%.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention.
Appended drawing reference:
1- evaporator；2- gas-liquid separator；3- low pressure compressor；4- electric T-shaped valve A；5- crosses heat regenerator；6- high pressure compressed
Machine；7- oil eliminator；8- warm condenser；9- subcooler；10- expansion valve D；11- low-temperature condenser；12- expansion valve E；13- electricity
Dynamic triple valve B；14- oil cooler；15- water circulating pump A；16- electric T-shaped valve C；17- heat dissipation water body；18- accumulation of heat water body；19-
Hot water feed-tank；20- solar heat-preservation water tank；21- solar thermal collector；22- water circulating pump B；23- temperature controller；The city 24-
Political affairs water supply；25- domestic hot-water's water supply；26- municipal water supply.
Specific embodiment
The present invention is described in further details below with reference to Figure of description and specific embodiment.
A kind of cold-heat combined Regional Energy supply system of ultrahigh energy efficiency, including evaporator, low pressure compressor, high pressure compressed
Machine, warm condenser, low-temperature condenser, expansion valve, electric T-shaped valve, water circulating pump, temperature sensor, the gas-liquid with recuperation of heat
Separator, solar thermal collector and solar heat-preservation water tank form double-compressor double-condenser and solar water auxiliary system.
The waste heat for taking full advantage of cold-heat combined Regional Energy supply system makes the efficiency of supply system improve 5%-10%.Recycling refrigeration
System condensing heat reaches 50%-70%.The cooperation between high pressure and low pressure compressor and high temperature and low-temperature condenser is comprehensively utilized, is realized
The total heat recovery of condensation heat makes domestic hot-water's leaving water temperature up to 70-80 DEG C, does not need to combine heat pump unit, combustion gas, coal-fired pot
Furnace or electricity assist this high-grade heat source to carry out secondary temperature elevation.Wherein, the function of above equipment are as follows:
Evaporator is evaporated by refrigerant, absorbs the heat of cooled object, to reach refrigeration.
Low pressure compressor, the low-temp low-pressure gaseous refrigerant that suction carrys out flash-pot are allowed to be pressurized, and improve its saturation temperature,
Reach setting value.
High pressure compressor, the pressurized gaseous refrigerant for being aspirated through heat regenerator are allowed to be pressurized again, and saturation temperature is again
It is primary to improve, reach setting value.
Heat regenerator is crossed, the delivery temperature of low pressure compressor is made to be cooled to saturation state.
Low-temperature condenser gives the medium temperature and medium pressure gaseous refrigerant that low pressure compressor is discharged under lower condensation temperature
It is cooling, it is allowed to liquefy, so that refrigerant is recycled in systems.
Warm condenser gives the high temperature and high pressure gaseous refrigerant that high pressure compressor is discharged under higher condensation temperature
It is cooling, it is allowed to liquefy, so that refrigerant is recycled in systems.
Expansion valve D makes the liquid refrigerant of medium temperature high pressure throttle, is allowed to the refrigerant pressure with low-temperature condenser exit
Unanimously.
Expansion valve E, first is that making the liquid refrigerant of medium temperature high pressure by its moist steam of the throttling as low-temp low-pressure, then
Refrigerant moist steam absorbs heat in evaporator and reaches refrigeration effect；Second is that the refrigerant flow for feeding evaporator is adjusted, with
Adapt to the variation of evaporator thermic load.
Electric T-shaped valve, for adjusting the flow of steam or hot and cold water；Wherein:
Electric T-shaped valve A, it is different to the demand of domestic hot-water according to seasonal variations, it adjusts and passes through low pressure compressor and high pressure
The refrigerant flow of compressor；
Electric T-shaped valve B controls the delivery temperature of high pressure compressor, passes through overheat according to the adjusting of the delivery temperature of high pressure compressor
The water flow of recover；Such as: when excessive discharge temperature, the water flow of more lower temperature passes through heat regenerator, when exhaust temperature
When spending low, the water of most of lower temperature is bypassed from electric T-shaped valve, was not passed through heat regenerator and is exchanged heat, to guarantee
The stable operation of heat recovery system.
Water circulating pump, for trandfer fluid or the equipment for being pressurized it.
Oil eliminator, the lubricating oil in high steam for high pressure compressor to be discharged separates, to guarantee device
Safely and efficiently run；According to reducing air velocity and changing point oily principle of airflow direction, the elaioleucite in high steam is made to exist
It is separated under gravity.
Oil cooler makes two kinds of fluid media (medium)s with certain temperature difference realize heat exchange, to reach reduction oil temperature, guarantees
The purpose that system operates normally.
Gas-liquid separator separates the gas-liquid mixture of refrigerant, generates liquid hammer to prevent liquid from entering compressor,
And refrigerating capacity when using liquid re-evaporation after separating in separator, high pressure liquid refrigerant is subcooled, reduces restriction loss,
The coefficient of performance of raising system.
Subcooler is a kind of heat exchanger, absorbs heat by refrigerant itself throttling and evaporation to make another part freeze
Agent is subcooled, and the specific refrigerating effect of circulation and coefficient of refrigerating performance can be made to increase, while being subcooled using liquid, can also be prevented from making
Cryogen liquid is vaporized before throttle mechanism, guarantees throttle mechanism the operation is stable.
It will be told about cold and hot using this ultrahigh energy efficiency by taking certain pit restoration of the ecosystem utilizing works ice and snow world item as an example below
Coproduction Regional Energy supply system carries out condensing units.
Project profile:
This engineering is ice and snow world item, belongs to public style entertainment building, and building function is large-scale ice and snow paradise, outdoor snow paradise
And its matched entrance hall, lounge of changing one's clothes, food and drink etc., moderate snow paradise construction area are 9.1 ten thousand m2, outdoor water amusement park building sides
Product is about 10000m2.Avenging paradise main part construction area is about 3.7 ten thousand m2, it is single layer 24m headroom；Public mating region
2 layers of underground, underground layer 2-3, building general height about 14.5m.Outdoor water amusement park by roof water amusement park, enter epistome water amusement park and
The big theme subregion composition of area's water amusement park three under cheating.
Condenser heat of this system for snow paradise in recovery room, indoor snow paradise uses technique ammonia machine, ammonia refrigeration
The condensing units of machine have a large amount of surplus other than paradise is antifreeze and defrosting for snow, the most of the time from 700-3700kW not
Deng.Condensing units are carried out to this partial heat, produce domestic hot-water.
Food and drink in the ice and snow world in this project, employee's shower, laundry, water amusement park food and drink, water amusement park tourist shower all need
Massive life hot water.Wherein food and drink in the ice and snow world, employee's shower, laundry etc. hot water demand measure annual substantially suitable, the winter
Season is slightly higher.And hot water needed for water amusement park food and drink and water amusement park tourist take a shower then reaches peak value in summer, rises compared to three season of winter in spring and autumn
Width is obvious, thus summer can make full use of solar water auxiliary system.
Ice and snow world engineering design condition:
Business hours: 09:00-22:00；
Artificial snow-making and maintenance time: 22:00-07:00；
Outdoor temperature (summer): dry-bulb temperature: 35.7 DEG C, wet-bulb temperature: 27 DEG C；
Outdoor temperature (winter): dry-bulb temperature: -6 DEG C, 2.3g/kg HR；
Indoor skiing area air themperature: -1 ~ -3 DEG C, relative humidity: 70% R.H；
The indoor attached room of skiing area: 23-26 DEG C, relative humidity: 50% R.H；
Ammonia refrigeration system evaporating temperature: -15 DEG C；
Ammonia refrigeration system condensation temperature: 40 DEG C.
As shown in Figure 1, the workflow in system refrigerant circuit specifically:
When into operation condition in summer, the cryogenic gaseous refrigerant come out from evaporator 1 first passes through before entering low pressure compressor 3
Cross the gas-liquid separator 2 with regenerator, in regenerator low-temperature steam and the high temperature refrigerant from warm condenser 8 into
Row heat exchange, so that the sucking of low pressure compressor 3 has the steam of certain degree of superheat, low pressure compressor 3 sucks a certain amount of low temperature
Low area overheat refrigerant vapour, after being compressed into medium temperature and medium pressure superheated refrigerant steam, into electric T-shaped valve A, under summer operating mode
Since constant temperature natatorium water body needs heat at night, thus the aperture of electric T-shaped valve A is adjusted according to natatorium institute's calorific requirement,
Thus high temperature side and low temperature side refrigerant flow are controlled.
In high temperature side branch, the superheated refrigerant steam of medium temperature and medium pressure, which first passed through heat regenerator 5, reduces the degree of superheat, reaches
To saturation state, heat release is to domestic hot-water while reducing the degree of superheat；It is sucked again by high pressure compressor 6 and carries out temperature and pressure
It is promoted again, the high-temperature high-pressure refrigerant steam after promotion enters oil eliminator 7, isolates in high-temperature high-pressure refrigerant steam
Lubricating oil, the lubricating oil isolated enter oil cooler 14 and are cooled down, and reduce oil temperature；Lubricating oil after cooling enters back into high pressure
Compressor 6 is recycled.And the high-temperature high-pressure refrigerant steam after separating enters in warm condenser 8 and is condensed, and passes through
Subcooler 9, then by converging with low temperature side refrigerant after the pressure of expansion valve D10 reducing pressure by regulating flow to low temperature side into band regenerator
Gas-liquid separator 2.
In low temperature side branch, it is directly entered by the refrigerant vapour of electric T-shaped valve A4 cold in low-temperature condenser 11
It is solidifying, the gas-liquid separator 2 for taking back hot device is entered after then converging with the refrigerant of high temperature side.Wherein low-temperature condenser uses two kinds
Chilled water unit, including accumulation of heat water body 18 and heat dissipation water body 17.Cooling water in low-temperature condenser after heat exchange heats up passes through
Water circulating pump A15 and electric T-shaped valve C enters accumulation of heat water body 18 and the recuperation of heat of the realization cooling water of water body 17 of radiating.Wherein accumulation of heat
Water body 18 is swimming-pool water side, needs to heat in summer evenings.Heat dissipation water body 17 is pit swimmer's pool, as auxiliary, is given birth to meeting
It is remaining if there are also heats after hot water living and accumulation of heat water body institute calorific requirement, pass through heat dissipation water body discharge, it is ensured that refrigeration system is efficient
Operation.
The refrigerant air-liquid mixture converged, the low-temperature steam exported in the gas-liquid separator 2 with backheat with evaporator 1
Carry out heat exchange so that into expansion valve E12 high-temperature high-pressure refrigerant have certain degree of supercooling, in expansion valve E12 into
One irreversible adiabatic expansion process of row, the low temperature and low pressure liquid after expansion enter evaporator 1 and are evaporated.So circulation, it is complete
At the cold-heat combined circulation of a ultrahigh energy efficiency.
The workflow of system domestic hot-water specifically:
Domestic hot-water's water supply enters hot water feed-tank 19 from municipal water supply 24, and hot water is in heat recovery water pipeline and hot water feed-tank 19
Between recycle, pass through hot water feed-tank flow by gravity water supply.After electric T-shaped valve B13 is opened, hot water passes through subcooler 9, overheat
Recover 5, warm condenser 8 successively heat, temperature from low to high, and hot water flow direction with heat transferring medium counter-flow arrangement, increase
Heat transfer efficiency.
The start-up and shut-down control mode of water circulating pump B22: when the inflow temperature of warm condenser 8 reaches 70 DEG C of set temperature low value
When, water circulating pump B22 is opened, and opens simultaneously the valve of municipal water supply 26, part water supply is made to enter solar heat-preservation water tank 20, is passed through
Cross water circulating pump B22 be lifted into roof solar thermal collector 21 absorb heat after, return to solar heat-preservation water tank 20, then into
Enter hot water feed-tank 19, reach the supplementary function of domestic hot-water, that is, can provide domestic hot-water's water supply 25.When warm condenser 8
When inflow temperature reaches 75 DEG C of high level of setting, water circulating pump B22 stops, while reducing valve opening or the pass of municipal water supply 26
Close solar water heating system.
Under winter and conditioning in Transition Season operating condition, because water amusement park utilization rate is low, water amusement park shower water is largely reduced, after main maintenance
Hot water needed for diligent food and drink and laundry is computed the recycling of refrigeration system condenser heat and has substantially met domestic hot-water's demand, because
And in winter with transition season, solar energy resources deficiency do not influence this project, solar water heating system may be selected to close or
Person part is run.
The cold-heat combined Regional Energy supply system of the ultrahigh energy efficiency of the present embodiment makes the efficiency of supply system improve 8%, recycling
Refrigeration system condensation heat is up to 60%；The total heat recovery for realizing condensation heat makes domestic hot-water's leaving water temperature up to 75 DEG C, obtains effect
Meet engineering demand.
In addition, it should be noted that, done equivalent of all structure, feature and principles described according to the invention patent design or
Simple change is included in the scope of protection of the invention patent.Person of ordinary skill in the field can be to described
Specific embodiment does various changes or supplement or is substituted in a similar manner, structure without departing from the invention patent or
Beyond the scope defined by this claim, it should belong to the scope of protection of the patent of the present invention.
Claims (10)
1. a kind of cold-heat combined Regional Energy Supply Method of ultrahigh energy efficiency, which comprises the following steps:
(1) refrigerant circuit: gas-liquid separation and heat exchange are carried out to the cryogenic gaseous refrigerant of evaporator output, it is low to form low temperature
Warm refrigerant steam is pressed through, then is compressed into medium temperature and medium pressure superheated refrigerant steam through low pressure compressor, and respectively enter low temperature side
In branch and high temperature side branch；
(2) high temperature side branch: running under high condensation temperature, reduces the degree of superheat of medium temperature and medium pressure superheated refrigerant steam to meet
The degree of superheat requirement of high pressure compressor, then high-temperature high-pressure refrigerant steam, high-temperature high-pressure refrigerant are compressed into through high pressure compressor
Steam is condensed through warm condenser, subcooler cools down again, then after being depressurized to the pressure of low temperature side by expansion valve, with low temperature side point
The refrigerant on road converges to form refrigerant air-liquid mixture, and the Low Temperature Steam of refrigerant air-liquid mixture and evaporator output carries out
Heat exchange, so that low pressure compressor sucking has the steam of certain degree of superheat；
(3) low temperature side branch: running under lower condensation temperature, and medium temperature and medium pressure superheated refrigerant steam enters cold in low-temperature condenser
After solidifying, converge to form refrigerant air-liquid mixture with the refrigerant of high temperature side branch, refrigerant air-liquid mixture and evaporator are defeated
Low Temperature Steam out carries out heat exchange, so that low pressure compressor sucking has the steam of certain degree of superheat.
2. the cold-heat combined Regional Energy Supply Method of ultrahigh energy efficiency according to claim 1, which is characterized in that the refrigerant
After gas-liquid mixture and the low-temperature steam of evaporator output carry out heat exchange, after expanded valve expansion, low-temp low-pressure refrigeration is formed
Agent, and be evaporated into evaporator, so recycle.
3. the cold-heat combined Regional Energy Supply Method of ultrahigh energy efficiency according to claim 1, which is characterized in that the evaporator
The cryogenic gaseous refrigerant of output, which enters, carries out gas-liquid separation in the gas-liquid separator with backheat, and the refrigerant of high temperature side branch
Converge in the regenerator of gas-liquid separator with the refrigerant of low temperature side branch and is carried out with the liquid after being separated in gas-liquid separator
High pressure liquid refrigerant is subcooled in heat exchange, while low pressure compressor sucking being made to have the steam for meeting degree of superheat requirement.
4. the according to claim 1 or 2 or 3 cold-heat combined Regional Energy Supply Methods of ultrahigh energy efficiency, which is characterized in that described
In low temperature side branch, the cooling water in low-temperature condenser after heat exchange heats up is delivered to life by first circulation water pump and valve
It applies flexibly water or sanitary water region is recycled.
5. the according to claim 1 or 2 or 3 cold-heat combined Regional Energy Supply Methods of ultrahigh energy efficiency, which is characterized in that also wrap
The operating procedure of heat recovery water pipeline is included, specifically:
Domestic hot-water's water supply enters hot water feed-tank from municipal water supply, and hot water follows between heat recovery water pipeline and hot water feed-tank
Ring, hot water is successively heated by subcooler, excessively heat regenerator and warm condenser or hot water is condensed by subcooler and high temperature
Device successively heats；Temperature from low to high, and hot water flow direction with heat transferring medium counter-flow arrangement.
6. the cold-heat combined Regional Energy Supply Method of ultrahigh energy efficiency according to claim 5, which is characterized in that when high temperature condenses
When the inflow temperature of device reaches set temperature low value, second circulation water pump is opened, and is opened simultaneously the valve of municipal water supply, is made part
Water supply enters solar heat-preservation water tank, after the solar thermal collector that second circulation water pump lifting enters roof absorbs heat,
Solar heat-preservation water tank is returned to, hot water feed-tank is entered back into, is used for domestic hot-water's water supply；When the inflow temperature of warm condenser reaches
When to set temperature high level, second circulation water pump stops, while reducing the valve opening of municipal water supply or closing solar heat
Water system.
7. the according to claim 1 or 2 or 3 cold-heat combined Regional Energy Supply Methods of ultrahigh energy efficiency, which is characterized in that also wrap
The operating procedure of lubricating oil pipeline is included, specifically: medium temperature and medium pressure superheated refrigerant steam is compressed into high temperature height through high pressure compressor
Compression refrigerant steam, high-temperature high-pressure refrigerant steam enter oil eliminator, isolate the lubrication in high-temperature high-pressure refrigerant steam
Oil, the lubricating oil isolated enter oil cooler and are cooled down；Lubricating oil after cooling enters back into high pressure compressor and is recycled
It utilizes.
8. a kind of cold-heat combined Regional Energy supply system of ultrahigh energy efficiency, which is characterized in that including refrigerant circuit systems, high temperature
Side branch system and low temperature side branch system；
The refrigerant circuit systems include:
Evaporator absorbs the heat of cooled object, to reach refrigeration, refrigerant, which enters, to be taken back for evaporating by refrigerant
The gas-liquid separator of heat；
Gas-liquid separator with backheat forms low-temp low-pressure for making the gas-liquid mixture of refrigerant carry out separation and heat exchange
Superheated refrigerant steam；
Low pressure compressor compresses it into medium temperature and medium pressure superheat refrigeration for aspirating the low-temp low-pressure superheated refrigerant steam
Agent steam, and respectively enter in low temperature side branch system and high temperature side branch system；
The high temperature side branch system includes:
Heat regenerator is crossed, the mistake of high pressure compressor is met for reducing the degree of superheat of the medium temperature and medium pressure superheated refrigerant steam
Temperature requirement；
High pressure compressor, for medium temperature and medium pressure superheated refrigerant is steam compressed at high-temperature high-pressure refrigerant steam；
Warm condenser, for being condensed to high-temperature high-pressure refrigerant steam；Warm condenser also successively with subcooler, expansion
Valve and gas-liquid separator piping connection with backheat；
The low temperature side branch system includes:
Low-temperature condenser, for condensing to the medium temperature and medium pressure superheated refrigerant steam, low-temperature condenser is also and with backheat
Gas-liquid separator piping connection, the refrigerant for exporting with high temperature side branch system converges in the gas-liquid separator with backheat
It closes, and carries out heat exchange with the Low Temperature Steam of evaporator output, make low pressure compressor sucking that there is the steam of certain degree of superheat.
9. the cold-heat combined Regional Energy supply system of ultrahigh energy efficiency according to claim 8, which is characterized in that energy supply system
System further includes heat recovery water pipe-line system, and the heat recovery water pipe-line system includes hot water feed-tank, and hot water feed-tank enters water
Mouth pipeline connects municipal water supply system；Or municipal water supply system entering through solar water auxiliary system connection hot water feed-tank
The mouth of a river；The water outlet of hot water feed-tank is successively connect with subcooler, excessively heat regenerator and warm condenser pipeline；Or hot water is given
The water outlet of water tank is successively connect with subcooler and warm condenser pipeline；The water outlet pipeline of the hot water feed-tank connects life
Hot water water supply system living；The water outlet of the warm condenser connects hot water feed-tank, warm condenser through second circulation water pump
Water outlet be equipped with temperature sensor.
10. the cold-heat combined Regional Energy supply system of ultrahigh energy efficiency according to claim 8 or claim 9, which is characterized in that described low
Cooling water in warm condenser after heat exchange heats up is delivered to domestic water by first circulation water pump and valve or health is used
Water area is recycled.
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| CN109579337A (en) * | 2018-11-26 | 2019-04-05 | 江苏天舒电器有限公司 | A kind of superposition type hot wind control system and method |
| CN110425733A (en) * | 2019-07-08 | 2019-11-08 | 北京万达文旅规划设计院有限公司 | Condensation heat recovery device, artificial snow-making system and condensing units method |
| CN115528518A (en) * | 2022-11-29 | 2022-12-27 | 中国航天三江集团有限公司 | Consumption type cold accumulation system for laser system |
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