CN101457964A - Cold storage air conditioner system with test function - Google Patents
Cold storage air conditioner system with test function Download PDFInfo
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- CN101457964A CN101457964A CNA200910028653XA CN200910028653A CN101457964A CN 101457964 A CN101457964 A CN 101457964A CN A200910028653X A CNA200910028653X A CN A200910028653XA CN 200910028653 A CN200910028653 A CN 200910028653A CN 101457964 A CN101457964 A CN 101457964A
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Abstract
The invention discloses a cold accumulation air conditioner system having test function, which comprises a refrigerant cycling system, a secondary refrigerant cycling system and an air conditioner chilled water cycling system; wherein, the refrigerant cycling system and the secondary refrigerant cycling system can interchange heat by an evaporator, the refrigerant cycling system and the air conditioner chilled water cycling system interchange heat by a heat interchanger, a preheater is internally filled with a heat transferring medium (such as water and the like), a cold accumulation barrel is internally provided with a cold accumulation ball or board which is internally encapsulated with cold accumulation materials, secondary refrigerant fluid passes through a gap flow passage outside the cold accumulation ball or board and interchanges heat with the cold accumulation materials in the cold accumulation ball or board, and refrigeration capacity is stored into the cold accumulation ball or board. The invention can be used for testing the performance of the cold accumulation air conditioner system under the working conditions of refrigeration, cold accumulation, cold release and normal cold supply, can test the low temperature air supply characteristics of the cold accumulation air conditioner system, and can test the characteristics of cold accumulation and cold release of an ice ball type or an ice plate type cold accumulation air conditioner system.
Description
Technical field
The present invention relates to a kind of refrigeration air-conditioner, specifically a kind of chilling air conditioning system with test function.
Background technology
Energy-conservation and environmental protection are most important problems in the field of energy utilization, and the storage (cold-storage, accumulation of heat) that utilizes the latent heat of phase change of phase-change material to carry out energy is an environment-friendly energy-saving technology.Phase-change material is in the process that itself undergoes phase transition, and the heat of absorbing environmental (cold) is measured, and emits heat (cold) amount to environment when needed, thereby reaches control ambient temperature and purpose of energy saving.It all has wide practical use in fields such as refrigeration low-temperature, solar energy utilization, building energy conservation, energy recovery, Aero-Space.
Though the power industry of China has obtained tremendous development, but the needs of fast development of national economy and people's lives electricity consumption sharp increase are not still satisfied in the growth of electric power, and national short of electricity situation still exists.At present, power supply shortage mainly shows following aspect:
(1) the network load rate is low, and system's peak-valley difference strengthens, and the peak power deficiency causes the frequent power cuts to limit consumption of electrical network.Peak-valley difference accounts for the ratio of peak load up to more than 30%.
(2) urban electric power consumption increases rapidly, and urban distribution network can not adapt to.Controller switching equipment overload operation situation all appears in summer high temperature weather, many cities.
The peak-valley difference of electrical network is big characteristics of modern power network, and the trend of aggravation is arranged along with economic development.Along with the continuous development of Chinese national economy, build power plant though department of State Grid consumes a large amount of financial resource and material resource, but still do not satisfy annual power consumption with 5%-7% needs that increase.Particularly in recent years along with the continuous development of urbanization process, the urban architecture energy consumption presents the trend of accelerated growth.According to statistics, air conditioning electricity has just accounted for more than 30% in the power consumption of the metropolitan peak of domestic part, makes the power system peak-valley difference sharply increase like this, and the network load rate obviously descends, and this has greatly influenced the cost of generating and the safe operation of electrical network.
Under the situation that the supply of electric power peak-valley difference strengthens, because the enforcement of time-of-use tariffs policy, for cool storage air conditioning technology provides vast potential for future development.
So-called cold accumulation air-conditioner is meant electrical network low ebb time at night (also being the very low time of air conditioner load simultaneously), the refrigeration host computer start is freezed and by energy storage system cold is stored, treat electrical network peak Elapsed Time on daytime (also being air conditioner load rush hour simultaneously), again cold is discharged the needs that satisfy the peak air conditioner load.Like this, most of power consumption of refrigeration system occurs in electricity consumption at night low peak period, and by day peak times of power consumption have only auxiliary equipment in operation, thereby realize power load " peak load shifting ".
At present, main water cold-storage and the ice cold-storage of adopting all carried out some researchs both at home and abroad to eutectic salt cold-storage and gas hydrate cold-storage in cold accumulation air-conditioner, do not use but be put to engineering mostly.
The water cold-storage can use conventional air-conditioning unit, can realize cold-storage and accumulation of heat double duty, and the air-conditioning unit all can be kept rated capacity and efficient under these two kinds of operating conditions.But the miscible shortcoming of cold water that the water cold-storage exists, and storage density of cold is low, the cold-storage groove volume reaches different temperatures in the groove greatly.Mainly be divided into forms such as layer-stepping, labyrinth formula, multi-groove type, more easily implement technically.
The ice cold-storage has the big advantage of energy storage density, but there is bigger degree of supercooling (4-6 ℃) in the ice cold-storage when ice-reserving, make the evaporating temperature of its air-conditioner host must be low to moderate-8 ℃---and 10 ℃, this will make the operational efficiency of air-conditioning unit reduce.In addition, when air conditioning condition and ice-reserving operating mode, to dispose duplexing condition air-conditioner host, increase the complexity of system.
The ice cold-storage mainly is divided into static ice-reserving and dynamic ice-storage, and static ice-reserving is divided into outer ice-reserving of coil pipe (interior ice-melt and outer ice-melt) and encapsulation ice (ice hockey and slab) again, and dynamic ice-storage mainly is divided into ice crystal formula and borneol landing formula.Use more outer ice-reserving of still static ice storage system, particularly coil pipe and ice hockey ice storage system at present.
The advantage of eutectic salt cold-storage is that the evaporating temperature of its phase transition temperature and air-conditioner host matches, and selects that a refrigeration host computer can freeze for use, the operation of cold-storage operating mode.Shortcoming is that its storage density of cold is lower, has surfusion when phase transformation is solidified, and the easy aged deterioration of material, cold-storage performance easily decay.
The gas hydrate cold-storage is to utilize some refrigerant vapour and water to do the time spent can form hydrate under 5-12 ℃ of conditions, and the crystallization latent heat of phase change is bigger.Its cold-storage temperature and air conditioning condition match, and cold-storage, to release when cold heat transfer efficiency higher.Because also there are some problems in the gas hydrate cold-storage, substitute, the removing of refrigerant vapour entrapped moisture, prevent the hydrate problems such as obstruction that expand that as cold-producing medium therefore, this cold-storage technology does not also have practical application at present.
Cool storage air conditioning technology is not only the effective means of reply current power situation in short supply, even and in supply of electric power equilibration time from now on, cool storage air conditioning technology remains the important peak load shifting technical measures of demand Side Management.
No matter be water cold accumulation air-conditioner or ice-storage air-conditioning, its systematic function all is different from the existing conventional air-conditioning system, therefore be necessary to develop the chilling air conditioning system that a cover can test out self chilling air conditioning system operation conditions and performance, for the efficient utilization of chilling air conditioning system lays the foundation.Yet there are no the report of chilling air conditioning system with test function.
Summary of the invention
The purpose of this invention is to provide a kind of chilling air conditioning system with test function.This system can be used to test chilling air conditioning system in cooling condition, cold-storage operating mode, release the performance of cold operating mode and normal cooling operating mode; Can test chilling air conditioning system cold air distribution characteristic; Can be used for testing the cold-storage of ice ball type, slab formula chilling air conditioning system and putting cold characteristic.
The objective of the invention is to be achieved through the following technical solutions:
A kind of chilling air conditioning system with test function is characterized in that: it comprises refrigerant-cycle systems, the refrigerating medium circulatory system and air conditioner coolant water circulation system;
Refrigerant-cycle systems comprises compressor, condenser, throttling expansion device and evaporimeter; Compressor one end is connected with the throttling expansion device by condenser, and the other end is by being connected with the throttling expansion device with evaporimeter; Between condenser and throttling expansion device, be provided with flowmeter F1, Pressure gauge P3 and temperature sensor T3; Be respectively equipped with Pressure gauge P1 and P2, temperature sensor T1 and T2 at the compressor two ends;
The refrigerating medium circulatory system comprises preheater, cold-storage bucket, first circulating pump, heat exchanger, control valve, first magnetic valve, second magnetic valve, the 3rd magnetic valve, the 4th magnetic valve, the 5th magnetic valve, the 6th magnetic valve; Preheater is made up of heat exchange coil and electric heater, and the cold-storage bucket is made up of outlet distributor, cold-storage ball, inlet distributor;
The refrigerating medium import of evaporimeter is connected with second magnetic valve, the 5th magnetic valve, the 6th magnetic valve respectively, and its outlet is connected with control valve, first magnetic valve, the 3rd magnetic valve respectively; The import of the heat exchange coil in the preheater is connected with first magnetic valve, second magnetic valve respectively, and the outlet of heat exchange coil is connected with the inlet distributor of cold-storage bucket; The outlet distributor of cold-storage bucket is connected with the 4th magnetic valve; Inlet of circulating pump is connected with control valve, and outlet is connected with the 5th magnetic valve with the refrigerating medium import of heat exchanger respectively; The refrigerating medium outlet of heat exchanger is connected with the 6th magnetic valve; Be provided with flowmeter F2 before first circulating pump, the import of flowmeter F2 is connected with the 3rd magnetic valve, the 4th magnetic valve respectively, and its outlet is connected with control valve with first circulating pump respectively; Refrigerating medium import and export and chilled water import and export at heat exchanger are equipped with temperature sensor;
The air conditioner coolant water circulation system comprises second circulating pump and indoor fan group; The chilled water outlet of heat exchanger is connected with the import of indoor units by second circulating pump, and the chilled water import of heat exchanger is connected with the outlet of indoor units; Between the import of second circulating pump and indoor fan group, be provided with flowmeter F3;
The refrigerant-cycle systems and the refrigerating medium circulatory system are carried out heat exchange by evaporimeter, and the refrigerating medium circulatory system and air conditioner coolant water circulation system are carried out heat exchange by heat exchanger.
Be filled with heat transferring medium (as water etc.) in the preheater of the present invention, cold-storage ball or plate are housed in the cold-storage bucket, in cold-storage ball or plate, be packaged with cool storage material, pass through in the space runner of coolant fluid outside cold-storage ball or plate, and carry out heat exchange with cool storage material in cold-storage ball or the plate, cold is stored in cold-storage ball or the plate.
Described compressor adopts piston type, screw, vortex or centrifugal.
Described condenser employing air cooling fin tubular type or water-cooled shell-tube type, bushing type or board-like.
Described throttling expansion device adopts heating power expansion valve or electric expansion valve.
Described evaporimeter adopts water-cooled shell-tube type, bushing type or board-like.
Described preheater adopts the insulation staving of cylindrical or rectangle.
Heat exchange coil in the described preheater adopts spiral coil, serpentine coil or " U " shape coil pipe.
Be provided with electric heater in the described preheater, be used for regulating refrigerant temperature.
The stop valve of described preheater setting is used for emitting the heat medium in the preheater.
Temperature when described preheater is controlled refrigerating medium and entered cold-storage bucket 6 is so that test cold-storage performance under the different refrigerant temperatures.
Described cold-storage bucket adopts the insulation staving of cylindrical or rectangle.
Cold-storage ball in the described cold-storage bucket can be substituted by hold-over plate, and the cool storage material in cold-storage ball or the hold-over plate adopts ice or other cool storage material.
Outlet distributor in the described cold-storage bucket and inlet distributor are used for the refrigerating medium in the cold-storage bucket is carried out uniform distribution.
Described heat exchanger adopts water-cooled shell-tube type, bushing type or board-like.
Flow when described control valve is used for regulating refrigerating medium and enters the cold-storage bucket is so that test cold-storage performance under the different refrigerating medium flow situations.
Described cold-producing medium is R22, R134a or R410a etc.
Described refrigerating medium is ethylene glycol solution or other heat exchanging fluid.
Compared with prior art, its remarkable advantage of the present invention is:
(1) this system can test chilling air conditioning system in cooling condition, cold-storage operating mode, release the performance under cold operating mode and the normal cooling operating mode, as temperature, pressure, flow, refrigerating capacity, cold storage capacity, put performance parameters such as cold, cooling amount, system power dissipation, refrigerating efficiency, cold-storage efficient.
(2) can test chilling air conditioning system cold air distribution characteristic, as wind pushing temperature, air output and air-supply cold etc.
(3) can be used to test the cold-storage of ice ball type, slab formula cold accumulation system and put cold characteristic.Change and refrigerating capacity, the cold storage capacity of system and put cold and change as the variations in temperature in cold-storage and the discharging cold course, pressure.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Description of reference numerals
11-compressor 12-condenser
13-throttling expansion device 14-evaporimeter
21-preheater 22-cold-storage bucket
The 23-first circulating pump 24-heat exchanger
25-control valve 31-second circulating pump
32-indoor fan group 261-first magnetic valve
The 262-second magnetic valve 263-the 3rd magnetic valve
264-the 4th magnetic valve 265-the 5th magnetic valve
266-the 6th magnetic valve 211-heat exchange coil
212-electric heater 213-stop valve
221-outlet distributor 222-cold-storage ball
The 223-inlet distributor
The specific embodiment
Among Fig. 1, flowmeter F1 is used for measuring refrigerant flow, flowmeter F2 is used for measuring the refrigerating medium flow, flowmeter F3 is used for measuring air conditioner coolant discharge, pressure sensor P1 is used for measuring compressor air suction pressure, pressure sensor P2 is used for measuring Compressor Discharge Pressure, pressure sensor P3 is used for measuring condensing pressure, pressure sensor P4 is used for measuring evaporating pressure, temperature sensor T1 is used for measuring the compressor air suction temperature, temperature sensor T2 is used for measuring compressor exhaust temperature, temperature sensor T3 is used for measuring condensation temperature, temperature sensor T4 is used for measuring evaporating temperature, temperature sensor T5 is used for measuring refrigerating medium and advances evaporator temperature, temperature sensor T6 is used for measuring refrigerating medium and goes out evaporator temperature, temperature sensor T7 is used for measuring refrigerating medium and advances the cold-storage barrel temperature, temperature sensor T8 is used for measuring refrigerating medium and goes out the cold-storage barrel temperature, temperature sensor T9 is used for measuring cold-storage bucket bottom temp, temperature sensor T10 is used for measuring cold-storage bucket middle part temperature, temperature sensor T11 is used for measuring cold-storage bucket head temperature, temperature sensor T12 is used for measuring refrigerating medium and advances heat exchange temperature, temperature sensor T13 is used for measuring refrigerating medium and goes out heat exchange temperature, temperature sensor T14 is used for measuring air conditioner coolant water and advances heat exchange temperature, temperature sensor T15 is used for measuring air conditioner coolant water and goes out heat exchange temperature, temperature sensor T16 is used for measuring the indoor units EAT, temperature sensor T17 is used for measuring the indoor units leaving air temp.
More than in the various measuring instruments of She Zhiing, can adjust as required.
A kind of chilling air conditioning system with test function of the present invention is made of refrigerant-cycle systems, the refrigerating medium circulatory system and air conditioner coolant water circulation system three parts.Refrigerant-cycle systems is formed by connecting by pipeline by compressor 11, condenser 12, throttling expansion device 13, evaporimeter 14.
The refrigerating medium circulatory system is formed by connecting by pipeline by preheater 21, cold-storage bucket 22, first circulating pump 23, heat exchanger 24, control valve 25 and hexad magnetic valve 261,262,263,264,265,266, wherein preheater 21 is made up of heat exchange coil 211, electric heater 212 and stop valve 213, and cold-storage bucket 22 has outlet distributor 221, cold-storage ball (plate) 222, inlet distributor 223 to form.
The air conditioner coolant water circulation system is formed by connecting by pipeline by second circulating pump 31 and indoor fan group 32.
The refrigerant-cycle systems and the refrigerating medium circulatory system are carried out heat exchange by evaporimeter 14, and the refrigerating medium circulatory system and air conditioner coolant water circulation system are carried out heat exchange by heat exchanger 24.
Operation principle of the present invention is described below:
Device for drying and filtering, gas-liquid separator, liquid distributor, electronic control part have been omitted among Fig. 1.
(1) chilling air conditioning system is carried out conventional air conditioner refrigerating operating mode
1) the refrigerant-cycle systems course of work is as follows: cold-producing medium is discharged by compressor 11 compression backs, enter condenser 12 and emit heat, condensed refrigerant liquid carries out the throttling step-down through throttling expansion device 13, refrigerant liquid after the step-down evaporates the heat that absorbs the refrigerating medium side and gasifies in evaporimeter 14, and refrigerating medium reduces because of temperature after emitting heat, refrigerant gas after the evaporation gasification is inhaled into compressor 11 and compresses, and moves in circles, finishes cold-producing medium periodic duty process.
2) the refrigerating medium circulatory system course of work is as follows: magnetic valve 261,262,264,265 and control valve 25 are closed, and magnetic valve 263,266 is opened, and first circulating pump 23 is opened.Sucked by first circulating pump 23 through magnetic valve 263 and flowmeter F2 by the refrigerating medium after evaporimeter 14 coolings, first circulating pump 23 enters the heat that absorbs air conditioner coolant water side in the heat exchanger 24 with refrigerating medium and heats up, air conditioner coolant water then reduces because of temperature after emitting heat, refrigerating medium after the intensification is got back to evaporimeter 14 through magnetic valve 266 and is carried out the heat release cooling again, moves in circles, finishes refrigerating medium periodic duty process.
3) the air conditioner coolant water circulation system course of work is as follows: second circulating pump 31 is opened, sucked by second circulating pump 31 by the air conditioner coolant water after heat exchanger 24 coolings, air conditioner coolant water absorbs the heat of room air by second circulating pump 31 and heats up in flowmeter F3 enters indoor units 32, room air then reduces because of temperature after emitting heat, air conditioner coolant water after the intensification is got back to heat exchanger 24 and is carried out the heat release cooling once more, moves in circles, finishes air conditioner coolant water periodic duty process.
(2) chilling air conditioning system is carried out independent cold-storage operating mode
1) the refrigerant-cycle systems course of work is as follows: cold-producing medium is discharged by compressor 11 compression backs, enter condenser 12 and emit heat, condensed refrigerant liquid carries out the throttling step-down through throttling expansion device 13, refrigerant liquid after the step-down evaporates the heat that absorbs the refrigerating medium side and gasifies in evaporimeter 14, and refrigerating medium reduces because of temperature after emitting heat, refrigerant gas after the evaporation gasification is inhaled into compressor 11 and compresses, and moves in circles, finishes cold-producing medium periodic duty process.
2) the refrigerating medium circulatory system course of work is as follows: magnetic valve 262,263,266 cuts out, magnetic valve 261,264,265 is opened, control valve 25 can according to enter refrigerating medium flow sizes in the cold-storage bucket 22 regulate (when the refrigerating medium flow hour, at this moment control valve 25 can leave to maximum; When the refrigerating medium flow was maximum, at this moment control valve 25 can leave to minimum.), first circulating pump 23 is opened.By the heat exchange coil 211 of refrigerating medium in magnetic valve 261 enters preheater 21 after evaporimeter 14 coolings, needs according to cold accumulation system are regulated by the temperature of 212 pairs of refrigerating mediums of electric heater, refrigerating medium after the adjusting temperature enters in the cold-storage bucket 22 and carries out heat exchange with cold-storage ball (plate) 222 interior cool storage materials, cool storage material in the cold-storage ball (plate) 222 solidifies phase transformation because of heat release cold is stored, refrigerating medium after heat absorption heats up is then sucked by first circulating pump 23 through magnetic valve 264 and flowmeter F2, refrigerating medium after first circulating pump 23 will heat up carries out the heat release cooling again in magnetic valve 265 enters evaporimeter 14, move in circles, finish refrigerating medium periodic duty process.
When needs are regulated process of cool refrigerating medium flow, the refrigerating medium that comes out from evaporimeter 14 is divided into two-way: one road refrigerating medium enters in the cold-storage bucket 22 and finishes process of cool, another road refrigerating medium does not participate in process of cool and enters first circulating pump 23 through control valve 25, and the two-way refrigerating medium converges the back and sucked by first circulating pump 23 in first circulating pump, 23 porch.
3) the air conditioner coolant water circulation system course of work is as follows: second circulating pump 31 cuts out, and this circulatory system is not worked.
(3) chilling air conditioning system is carried out conventional air conditioner refrigerating and cold-storage operating mode simultaneously
1) the refrigerant-cycle systems course of work is as follows: cold-producing medium is discharged by compressor 11 compression backs, enter condenser 12 and emit heat, condensed refrigerant liquid carries out the throttling step-down through throttling expansion device 13, refrigerant liquid after the step-down evaporates the heat that absorbs the refrigerating medium side and gasifies in evaporimeter 14, and refrigerating medium reduces because of temperature after emitting heat, refrigerant gas after the evaporation gasification is inhaled into compressor 11 and compresses, and moves in circles, finishes cold-producing medium periodic duty process.
2) the refrigerating medium circulatory system course of work is as follows: magnetic valve 262,263,265 cuts out, magnetic valve 261,264,266 is opened, control valve 25 can according to enter refrigerating medium flow sizes in the cold-storage bucket 22 regulate (when the refrigerating medium flow hour, at this moment control valve 25 can leave to maximum; When the refrigerating medium flow was maximum, at this moment control valve 25 can leave to minimum.), first circulating pump 23 is opened.By the heat exchange coil 211 of refrigerating medium in magnetic valve 261 enters preheater 21 after evaporimeter 14 coolings, needs according to cold accumulation system are regulated by the temperature of 212 pairs of refrigerating mediums of electric heater, refrigerating medium after the adjusting temperature enters in the cold-storage bucket 22 and carries out heat exchange with cold-storage ball (plate) 222 interior cool storage materials, cool storage material in the cold-storage ball (plate) 222 solidifies phase transformation because of heat release cold is stored, refrigerating medium after heat absorption heats up is then sucked by first circulating pump 23 through magnetic valve 264 and flowmeter F2, first circulating pump 23 enters the heat that absorbs air conditioner coolant water side in the heat exchanger 24 with refrigerating medium and heats up once more, air conditioner coolant water then reduces because of temperature after emitting heat, refrigerating medium after the intensification is got back to evaporimeter 14 through magnetic valve 266 and is carried out the heat release cooling again, moves in circles, finish refrigerating medium periodic duty process.
When needs are regulated process of cool refrigerating medium flow, the refrigerating medium that comes out from evaporimeter 14 is divided into two-way: one road refrigerating medium enters in the cold-storage bucket 22 and finishes process of cool, another road refrigerating medium does not participate in process of cool and enters first circulating pump 23 through control valve 25, the two-way refrigerating medium converges the back and is sucked by first circulating pump 23 in first circulating pump, 23 porch, enter the heat that absorbs air conditioner coolant water sides in the heat exchanger 24 then and heat up, the refrigerating medium after the intensification is got back to evaporimeter 14 through magnetic valve 266 and is carried out the heat release cooling again.
3) the air conditioner coolant water circulation system course of work is as follows: second circulating pump 31 is opened, sucked by second circulating pump 31 by the air conditioner coolant water after heat exchanger 24 coolings, air conditioner coolant water absorbs the heat of room air by second circulating pump 31 and heats up in flowmeter F3 enters indoor units 32, room air then reduces because of temperature after emitting heat, air conditioner coolant water after the intensification is got back to heat exchanger 24 and is carried out the heat release cooling once more, moves in circles, finishes air conditioner coolant water periodic duty process.
(4) chilling air conditioning system is carried out the independent cold operating mode of putting
1) the refrigerant-cycle systems course of work is as follows: compressor 11 cuts out, and this circulatory system is not worked.
2) the refrigerating medium circulatory system course of work is as follows: magnetic valve 262,263,265 cuts out, magnetic valve 261,264,266 is opened, control valve 25 can according to enter refrigerating medium flow sizes in the cold-storage bucket 22 regulate (when the refrigerating medium flow hour, at this moment control valve 25 can leave to maximum; When the refrigerating medium flow was maximum, at this moment control valve 25 can leave to minimum.), first circulating pump 23 is opened.Refrigerating medium after being heated up by heat exchanger 24 heat absorption is through magnetic valve 266, evaporimeter 14, magnetic valve 261, enter behind the preheater 21 in the cold-storage bucket 22 and and carry out heat exchange with cold-storage ball (plate) 222 interior cool storage materials, cool storage material in the cold-storage ball (plate) 222 melts phase transformation because of heat absorption cold is discharged, refrigerating medium after the heat release cooling is then sucked by first circulating pump 23 through magnetic valve 264 and flowmeter F2, refrigerating medium after first circulating pump 23 will be lowered the temperature enters the heat that absorbs air conditioner coolant water side in the heat exchanger 24 and heats up, air conditioner coolant water then reduces because of temperature after emitting heat, refrigerating medium after the intensification is through magnetic valve 266, evaporimeter 14, magnetic valve 261, enter once more behind the preheater 21 and carry out the heat release cooling in the cold-storage bucket 22, move in circles, finish refrigerating medium periodic duty process.
When needs are regulated discharging cold course refrigerating medium flow, the refrigerating medium that comes out from evaporimeter 14 is divided into two-way: one road refrigerating medium enters in the cold-storage bucket 22 and finishes discharging cold course, another road refrigerating medium does not participate in discharging cold course and enters first circulating pump 23 through control valve 25, the two-way refrigerating medium converges the back and is sucked by first circulating pump 23 in first circulating pump, 23 porch, enter the heat that absorbs air conditioner coolant water sides in the heat exchanger 24 then and heat up, the refrigerating medium after the intensification is got back to once more behind magnetic valve 266, evaporimeter 14, magnetic valve 261, preheater 21 and is carried out the heat release cooling in the cold-storage bucket 22.
3) the air conditioner coolant water circulation system course of work is as follows: second circulating pump 31 is opened, sucked by second circulating pump 31 by the air conditioner coolant water after heat exchanger 24 coolings, air conditioner coolant water absorbs the heat of room air by second circulating pump 31 and heats up in flowmeter F3 enters indoor units 32, room air then reduces because of temperature after emitting heat, air conditioner coolant water after the intensification is got back to heat exchanger 24 and is carried out the heat release cooling once more, moves in circles, finishes air conditioner coolant water periodic duty process.
(5) chilling air conditioning system is carried out evaporimeter and cold-storage bucket series connection associating cooling operating mode
1) the refrigerant-cycle systems course of work is as follows: cold-producing medium is discharged by compressor 11 compression backs, enter condenser 12 and emit heat, condensed refrigerant liquid carries out the throttling step-down through throttling expansion device 13, refrigerant liquid after the step-down evaporates the heat that absorbs the refrigerating medium side and gasifies in evaporimeter 14, and refrigerating medium reduces because of temperature after emitting heat, refrigerant gas after the evaporation gasification is inhaled into compressor 11 and compresses, and moves in circles, finishes cold-producing medium periodic duty process.
2) the refrigerating medium circulatory system course of work is as follows: magnetic valve 262,263,265 and control valve 25 are closed, and magnetic valve 261,264,266 is opened, and first circulating pump 23 is opened.By the refrigerating medium heat release cooling in magnetic valve 266 enters evaporimeter 14 after the heat exchanger 24 heat absorption intensifications, refrigerating medium after the cooling is through magnetic valve 261, preheater 21 enters in the cold-storage bucket 22, carry out heat exchange with cool storage material in the cold-storage ball (plate) 222, cool storage material in the cold-storage ball (plate) 222 melts phase transformation because of heat absorption and cold is discharged, refrigerating medium after the cooling is then sucked by first circulating pump 23 through magnetic valve 264 and flowmeter F2 once more, refrigerating medium after first circulating pump 23 will be lowered the temperature enters the heat that absorbs air conditioner coolant water side in the heat exchanger 24 and heats up, air conditioner coolant water then reduces because of temperature after emitting heat, refrigerating medium after the intensification carries out the heat release cooling in magnetic valve 266 enters evaporimeter 14 once more, move in circles, finish refrigerating medium periodic duty process.
3) the air conditioner coolant water circulation system course of work is as follows: second circulating pump 31 is opened, sucked by second circulating pump 31 by the air conditioner coolant water after heat exchanger 24 coolings, air conditioner coolant water absorbs the heat of room air by second circulating pump 31 and heats up in flowmeter F3 enters indoor units 32, room air then reduces because of temperature after emitting heat, air conditioner coolant water after the intensification is got back to heat exchanger 24 and is carried out the heat release cooling once more, moves in circles, finishes air conditioner coolant water periodic duty process.
(6) chilling air conditioning system is carried out evaporimeter and cold-storage bucket associating in parallel cooling operating mode
1) the refrigerant-cycle systems course of work is as follows: cold-producing medium is discharged by compressor 11 compression backs, enter condenser 12 and emit heat, condensed refrigerant liquid carries out the throttling step-down through throttling expansion device 13, refrigerant liquid after the step-down evaporates the heat that absorbs the refrigerating medium side and gasifies in evaporimeter 14, and refrigerating medium reduces because of temperature after emitting heat, refrigerant gas after the evaporation gasification is inhaled into compressor 11 and compresses, and moves in circles, finishes cold-producing medium periodic duty process.
2) the refrigerating medium circulatory system course of work is as follows: magnetic valve 261,265 and control valve 25 are closed, and magnetic valve 262,263,264,266 is opened, and first circulating pump 23 is opened.Be divided into two-way by the refrigerating medium after the heat exchanger 24 heat absorption intensifications behind magnetic valve 266: one road refrigerating medium enters heat release cooling in the evaporimeter 14, and the refrigerating medium after the cooling enters flowmeter F2 through magnetic valve 263; Another road refrigerating medium enters in the cold-storage bucket 22 behind magnetic valve 262 and preheater 21, carry out heat exchange with cool storage material in the cold-storage ball (plate) 222, cool storage material in the cold-storage ball (plate) 222 melts phase transformation because of heat absorption and cold is discharged, refrigerating medium after the heat release cooling enters flowmeter F2 through magnetic valve 264, refrigerating medium after the two-way cooling converges the back and is sucked by first circulating pump 23 in flowmeter F2 porch, refrigerating medium after first circulating pump 23 will be lowered the temperature enters the heat that absorbs air conditioner coolant water side in the heat exchanger 24 and heats up, air conditioner coolant water then reduces because of temperature after emitting heat, refrigerating medium after the intensification is divided into two-way again through magnetic valve 266 and enters cooling in evaporimeter 14 and the cold-storage bucket 22 respectively, moves in circles, finish refrigerating medium periodic duty process.
3) the air conditioner coolant water circulation system course of work is as follows: second circulating pump 31 is opened, sucked by second circulating pump 31 by the air conditioner coolant water after heat exchanger 24 coolings, air conditioner coolant water absorbs the heat of room air by second circulating pump 31 and heats up in flowmeter F3 enters indoor units 32, room air then reduces because of temperature after emitting heat, air conditioner coolant water after the intensification is got back to heat exchanger 24 and is carried out the heat release cooling once more, moves in circles, finishes air conditioner coolant water periodic duty process.
Utilize the present invention can test chilling air conditioning system in cooling condition, cold-storage operating mode, release the performance under cold operating mode and the normal cooling operating mode, as temperature, pressure, flow, refrigerating capacity, cold storage capacity, put performance parameters such as cold, cooling amount, system power dissipation, refrigerating efficiency, cold-storage efficient.Can test chilling air conditioning system cold air distribution characteristic, as wind pushing temperature, air output and air-supply cold etc.Can be used to test the cold-storage of ice ball type, slab formula cold accumulation system and put cold characteristic.Change and refrigerating capacity, the cold storage capacity of system and put cold and change as the variations in temperature in cold-storage and the discharging cold course, pressure.The present invention can provide data for the efficient utilization of chilling air conditioning system.
Claims (10)
1, a kind of chilling air conditioning system with test function is characterized in that: it comprises refrigerant-cycle systems, the refrigerating medium circulatory system and air conditioner coolant water circulation system;
Refrigerant-cycle systems comprises compressor (11), condenser (12), throttling expansion device (13) and evaporimeter (14); Compressor (11) one ends are connected with throttling expansion device (13) by condenser (12), and the other end is by being connected with throttling expansion device (13) with evaporimeter (14); Between condenser (12) and throttling expansion device (13), be provided with flowmeter F1, pressure sensor P3 and temperature sensor T3; Be respectively equipped with pressure sensor P1 and P2, temperature sensor T1 and T2 at compressor (11) two ends;
The refrigerating medium circulatory system comprises preheater (21), cold-storage bucket (22), first circulating pump (23), heat exchanger (24), control valve (25), first magnetic valve (261), second magnetic valve (262), the 3rd magnetic valve (263), the 4th magnetic valve (264), the 5th magnetic valve (265), the 6th magnetic valve (266); Preheater (21) is made up of heat exchange coil (211) and electric heater (212), and cold-storage bucket (22) is made up of outlet distributor (221), cold-storage ball (222), inlet distributor (223);
The refrigerating medium import of evaporimeter (14) is connected with second magnetic valve (262), the 5th magnetic valve (265), the 6th magnetic valve (266) respectively, and its outlet is connected with control valve (25), first magnetic valve (261), the 3rd magnetic valve (263) respectively; The import of the heat exchange coil (211) in the preheater (21) is connected with first magnetic valve (261), second magnetic valve (262) respectively, and the outlet of heat exchange coil (211) is connected with the inlet distributor (223) of cold-storage bucket (22); The outlet distributor (221) of cold-storage bucket (22) is connected with the 4th magnetic valve (264); The import of circulating pump (23) is connected with control valve (25), and outlet is connected with the 5th magnetic valve (265) with the refrigerating medium import of heat exchanger (24) respectively; The refrigerating medium outlet of heat exchanger (24) is connected with the 6th magnetic valve (266); At the preceding flowmeter F2 that is provided with of first circulating pump (23), the import of flowmeter F2 is connected with the 3rd magnetic valve (263), the 4th magnetic valve (264) respectively, and its outlet is connected with control valve (25) with first circulating pump (23) respectively; Refrigerating medium import and export and chilled water import and export at heat exchanger (24) are equipped with temperature sensor;
The air conditioner coolant water circulation system comprises second circulating pump (31) and indoor fan group (32); The chilled water outlet of heat exchanger (24) is connected with the import of indoor units (32) by second circulating pump (31), and the chilled water import of heat exchanger (24) is connected with the outlet of indoor units (32); Between the import of second circulating pump (31) and indoor fan group (32), be provided with flowmeter F3;
The refrigerant-cycle systems and the refrigerating medium circulatory system are carried out heat exchange by evaporimeter (24), and the refrigerating medium circulatory system and air conditioner coolant water circulation system are carried out heat exchange by heat exchanger (24).
2, the chilling air conditioning system with test function according to claim 1 is characterized in that: described condenser (12) adopts air cooling fin tubular type, water-cooled shell-tube type, bushing type or board-like.
3, the chilling air conditioning system with test function according to claim 1 is characterized in that: described throttling expansion device (13) adopts heating power expansion valve or electric expansion valve.
4, the chilling air conditioning system with test function according to claim 1 is characterized in that: described evaporimeter (14) adopts water-cooled shell-tube type, bushing type or board-like.
5, the chilling air conditioning system with test function according to claim 1 is characterized in that: described preheater (21) adopts the insulation staving of cylindrical or rectangle.
6, the chilling air conditioning system with test function according to claim 1 is characterized in that: the heat exchange coil 51 in the described preheater (21) adopts spiral coil, serpentine coil or " U " shape coil pipe.
7, the chilling air conditioning system with test function according to claim 1 is characterized in that: described preheater (21) is provided with the stop valve (213) that is used for emitting the interior heat medium of preheater (21).
8, the chilling air conditioning system with test function according to claim 1 is characterized in that: described cold-storage bucket (22) adopts the insulation staving of cylindrical or rectangle.
9, the chilling air conditioning system with test function according to claim 1 is characterized in that: the cool storage material in the described cold-storage ball (222) adopts ice.
10, the chilling air conditioning system with test function according to claim 1 is characterized in that: described heat exchanger (24) adopts water-cooled shell-tube type, bushing type or board-like.
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- 2009-01-08 CN CN200910028653XA patent/CN101457964B/en not_active Expired - Fee Related
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