CN100595490C - Water chilling unit based on hot moisture independent process as well as air-treatment method thereof - Google Patents
Water chilling unit based on hot moisture independent process as well as air-treatment method thereof Download PDFInfo
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- CN100595490C CN100595490C CN200810023234A CN200810023234A CN100595490C CN 100595490 C CN100595490 C CN 100595490C CN 200810023234 A CN200810023234 A CN 200810023234A CN 200810023234 A CN200810023234 A CN 200810023234A CN 100595490 C CN100595490 C CN 100595490C
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- evaporimeter
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- chilled water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 119
- 238000000034 method Methods 0.000 title claims description 24
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000009408 flooring Methods 0.000 claims description 20
- 238000007710 freezing Methods 0.000 claims description 12
- 238000009834 vaporization Methods 0.000 claims description 6
- -1 floor Substances 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 abstract description 4
- 239000003507 refrigerant Substances 0.000 abstract 4
- 238000001816 cooling Methods 0.000 description 17
- 238000004378 air conditioning Methods 0.000 description 4
- 238000007791 dehumidification Methods 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000003750 conditioning Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001105 regulatory Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Abstract
The invention provides a cold water unit based on independent humidity control and an air treatment method thereof, relating to the cold water unit which is capable of achieving the independent humidity control and uses floor radiation to undertake an indoor sensible heat load, wherein refrigerant enters a condenser for condensing after being compressed in and discharged from a compressor, entersa reservoir after being condensed into liquid, is filtered via a filter, is out of the filter and enters a first evaporator after being throttled and decompressed via a first electronic expansion valve and changed into gas-liquid two-phase, and is performed with a heat exchange with chilled water in the first evaporator so as to absorb heat for evaporation and prepare high-temperature chilled water; the refrigerant is changed into overheating gas after being completely evaporated and enters into the compressor from a first suction end of the compressor, and is compressed and discharged once again; the refrigerant of the other path passes through a second electronic expansion valve, enters a second evaporator after being throttled and decompressed, is performed with the heat exchange with the chilled water in the second evaporator so as to absorb heat for evaporation and prepare low-temperature chilled water. In a circuit of the low-temperature chilled water, the chilled water is performed with the heat exchange with the refrigerant in the second evaporator to reduce the temperature.
Description
Technical field
The present invention relates to a kind of flooring radiation that utilizes of the wet independent process of heat of realizing and bear indoor sensible heat load, the accessory fan coil pipe is born the handpiece Water Chilling Units and the air-treatment method thereof of indoor humidity load, the technical field that belongs to the refrigerated air-conditioning system design and make.
Background technology
Raising along with people's living standard, to work, the requirement of studying and living environmental amenity is also more and more higher, air-conditioning is used widely, but exhaustion along with fossil energy, energy shortage has become the major issue that whole world development is faced, how on the basis of satisfying people's comfortableness demand, realizes that the saving of the energy seems extremely important, the floor radiant cooling technology just has such characteristics, and floor radiant cooling has advantages such as comfortableness height, energy savings.But the greatest problem that floor radiant cooling exists is that " dewfall " phenomenon appears in floor surface easily, and the dewfall phenomenon has seriously hindered the development and the application of floor radiant cooling technology.Existing floor radiant cooling system scheme is taked the mode that handpiece Water Chilling Units+the flooring radiation coil pipe combines with displacement ventilation system mostly, perhaps take handpiece Water Chilling Units+flooring radiation coil pipe to combine with solution dehumidification, this dual mode all causes whole air-conditioning system equipment huge, the initial cost height, control is complicated, and whole air-conditioning system economy is reduced.
Summary of the invention
Technical problem: the objective of the invention is to have system complex for solving existing floor radiant cooling system, initial cost is big, problems such as control accuracy is lower propose the handpiece Water Chilling Units device and the air-treatment method of the realization floor radiant cooling that a kind of system is simple, control accuracy is high, economic performance is good.
Technical scheme: the present invention is based in the water chilling unit system device of the wet independent process of heat, compressor outlet connects the input of condenser, the input of the output termination reservoir of condenser, the output of reservoir links to each other with the input of filter, the output of filter connects the input of first electric expansion valve and the input of second electric expansion valve respectively, the outlet of first electric expansion valve connects the input of first evaporimeter, the first input end of the output termination compressor of first evaporimeter, the outlet of second electric expansion valve connects the input of second evaporimeter, second input of the output termination compressor of second evaporimeter.The input of chilled water output termination first water pump of first evaporimeter, the output of first water pump connects the input of flooring radiation coil pipe, and the outlet of flooring radiation coil pipe connects the chilled water input of first evaporimeter.The chilled water outlet of second evaporimeter connects the input of second water pump, the input of the output termination accessory fan coil pipe of second water pump, and the outlet of accessory fan coil pipe connects the input of second evaporimeter.
The air-treatment method of the wet independent process of heat based on the dehumidifying of floor radiant cooling and accessory fan coil pipe of the present invention, its concrete grammar is that the compressor of handpiece Water Chilling Units has the double suction atmospheric pressure, handpiece Water Chilling Units has two evaporimeters, produce the different temperatures chilled water respectively, first evaporimeter is produced high temperature chilled water (12～14 ℃), supply with the flooring radiation coil pipe, be used to bear indoor main thermic load; Second evaporimeter is produced cryogenic freezing water (about 7 ℃), supplies with the accessory fan coil pipe, is used to bear indoor humidity load and fraction thermic load.During indoor section air process accessory fan coil pipe, be lower than the dew-point temperature of air because of the chilled water temperature in the fan coil, water in air part is condensed in fan coil, after coming out from the accessory fan coil pipe, air is dry air, after room air mixes, enter the circulation of accessory fan coil pipe once more, thereby indoor humidity load is eliminated, make the dew-point temperature of room air be lower than floor surface temperature, guarantee that " dewfall " phenomenon does not appear in the floor in the floor radiant cooling process.Room air carries out convection current and radiation heat transfer with the floor that is embedded with radiant coil simultaneously, and cold is passed to air and indoor equipment, personnel from the floor, and this moment, the flooring radiation coil pipe was born indoor sensible heat load, thereby realizes the wet independent process of heat of room conditioning load.The flooring radiation coil pipe is not born dehumidification function, can take the chilled water of higher temperature, thereby improves the refrigeration system evaporating temperature, and unit performance is improved greatly, realizes energy-conservation.
The scheme of being taked based on the handpiece Water Chilling Units device of the wet independent process of heat is: cold-producing medium enters condenser condenses be compressed discharge in compressor after, enter reservoir after being condensed into liquid, filter through filter then, coming out afterwards from filter, cold-producing medium is divided into two-way, one the tunnel becomes gas-liquid two-phase through cold-producing medium after the first electric expansion valve throttling step-down enters first evaporimeter, cold-producing medium carries out heat exchange with chilled water therein, absorbs heat of vaporization, produces the high temperature chilled water.Become overheated gas after cold-producing medium evaporates fully and enter compressor, be compressed discharge once more, thereby realize circulation from compressor first suction end.Another road cold-producing medium is entered second evaporimeter through second electric expansion valve after the throttling step-down, cold-producing medium therein with the chilled water heat exchange, absorb heat of vaporization, produce cryogenic freezing water.Become overheated gas after cold-producing medium evaporates fully and enter compressor, compressed the back again by compressor and discharge, thereby realize circulation from compressor second suction end.In the high temperature chilled water circuit, chilled water in first evaporimeter with the cold-producing medium heat exchange, temperature reduces, come out to be entered the flooring radiation coil pipe after first water pump suction pressurization from first evaporimeter, chilled water, floor, air conduct, convection current and radiation heat transfer, chilled water temperature raises, and enters once more after the flooring radiation coil pipe comes out first evaporimeter and the cold-producing medium heat exchange, reduces self temperature.Thereby form circulation.In the cryogenic freezing water loop, chilled water in second evaporimeter with the cold-producing medium heat exchange, temperature reduces, come out to be entered the accessory fan coil pipe after second water pump suction pressurization from second evaporimeter, chilled water carries out exchange heat with air therein, and water in air steam condenses, chilled water temperature raises, after the accessory fan coil pipe comes out, enter first evaporimeter and cold-producing medium heat exchange once more, emit heat and reduce self temperature, thereby form circulation.
Whole device is realized floor radiant cooling and the floor key of dewfall do not occur and is, by chilled-water flow and wind speed in the control accessory fan coil pipe, realization is to the adjusting of indoor air humidity, thereby the dew-point temperature that guarantees room air is lower than floor surface temperature, prevents the appearance of floor " dewfall " phenomenon.By the frequency of controlling second water pump is the adjusting that rotating speed can be realized accessory fan coil pipe chilled-water flow, can realize the control of wind speed by the operation shelves number (high, medium and low third gear) that changes blower fan in the accessory fan coil pipe.
Beneficial effect: should be: simply, effectively eliminate the condensation trouble of floor radiant cooling, remedied long deficiency transit time at cooling initial stage that floor radiant cooling exists based on the handpiece Water Chilling Units of the wet independent process of heat and the advantage of air-treatment method thereof.Whole apparatus structure is simple, the control accuracy height, and initial cost is less.Because take the high temperature chilled water to bear indoor sensible heat load, unit performance is greatly enhanced, and has realized the efficient, energy-conservation of whole machine set system, has good and economic simultaneously.
Description of drawings
Fig. 1 is the water chilling unit system schematic flow sheet that the present invention is based on the wet independent process of heat.
Have among the above figure: compressor 1; Compressor first input end 1a; The compressor second input 1b; Condenser 2; Reservoir 3; Filter 4; First electric expansion valve 5; First evaporimeter 6; Second electric expansion valve 7; Second evaporimeter 8; First water pump 9; Floor radiant cooling coil pipe 10; Second water pump 11; Accessory fan coil pipe 12.
The specific embodiment
1 further specify the specific embodiment of the present invention in conjunction with the accompanying drawings: compressor 1 outlet connects the input of condenser 2, the input of the output termination reservoir 3 of condenser 2, the output of reservoir 3 links to each other with the input of filter 4, the output of filter 4 links to each other with the input of first electric expansion valve 5 and the input of second electric expansion valve 7 respectively, the output of first electric expansion valve 5 connects the input of first evaporimeter 6, the first input end 1a of the output termination compressor 1 of first evaporimeter 6, the input of output termination second evaporimeter 8 of second electric expansion valve 7, the second input 1b of the output termination compressor 1 of second evaporimeter 8.The input of chilled water output termination first water pump 9 of first evaporimeter 6, the output of first water pump 9 connects the input of flooring radiation coil pipe 10, the chilled water input of output termination first evaporimeter 6 of flooring radiation coil pipe 10.The input of chilled water output termination second water pump 11 of second evaporimeter 8, the input of the output termination accessory fan coil pipe 12 of second water pump 11, the input of output termination second evaporimeter 8 of accessory fan coil pipe 12.Wherein, compressor 1 is a double suction atmospheric pressure compressor, as the multi-cylinder piston compressor, or the middle air-breathing helical-lobe compressor of band, or digital scroll compressor.
Air in the processing procedure of the water chilling unit system of the independent process that wets based on heat is: the indoor section air is at first sucked by the accessory fan coil pipe, be lower than the dew-point temperature of air because of the chilled water temperature in the fan coil, water in air steam condenses on the fan coil fin, air humidity reduces, air comes out the back with after room air mixes from the accessory fan coil pipe, enter the circulation of accessory fan coil pipe once more, thereby indoor humidity load is eliminated, make the dew-point temperature of room air be lower than floor surface temperature, guarantee " dewfall " phenomenon not occur in the floor radiant cooling process.Room air carries out convection current and radiation heat transfer with the floor that is embedded with radiant coil simultaneously, and cold is passed to air and indoor equipment, personnel from the floor, and the flooring radiation coil pipe is born indoor sensible heat load.Realize the wet independent process of heat of room conditioning load, flooring radiation is not born dehumidification function simultaneously, can take the chilled water of higher temperature, thereby improves the refrigeration system evaporating temperature, and the performance of unit is improved greatly, realizes energy-conservation.
Detailed process based on the handpiece Water Chilling Units device of the wet independent process of heat is: cold-producing medium enters condenser condenses be compressed discharge in compressor after, enter reservoir after being condensed into liquid, filter through filter then, coming out afterwards from filter, cold-producing medium is divided into two-way, one the tunnel becomes gas-liquid two-phase through cold-producing medium after the first electric expansion valve throttling step-down enters first evaporimeter, cold-producing medium carries out heat exchange with chilled water therein, absorb heat of vaporization, produce the high temperature chilled water, become overheated gas after cold-producing medium evaporates fully and enter compressor from compressor first suction end, be compressed discharge once more, thereby realize circulation.Another road cold-producing medium is through second electric expansion valve, entered second evaporimeter after the throttling step-down, cold-producing medium therein with the chilled water heat exchange, absorb heat of vaporization, produce cryogenic freezing water, become overheated gas after cold-producing medium evaporates fully and enter compressor, compressed the back again by compressor and discharge, thereby realize circulation from compressor second suction end.In the high temperature chilled water circuit, chilled water in first evaporimeter with the cold-producing medium heat exchange, temperature reduces, come out to enter the flooring radiation coil pipe after the back is sucked pressurization by first water pump from first evaporimeter, chilled water, floor, air conduct, convection current and radiation heat transfer, chilled water temperature raises, and enters once more after the flooring radiation coil pipe comes out first evaporimeter and the cold-producing medium heat exchange, reduces self temperature.Thereby form circulation.In the cryogenic freezing water loop, chilled water in second evaporimeter with the cold-producing medium heat exchange, temperature reduces, come out to be entered the accessory fan coil pipe after second water pump suction pressurization from second evaporimeter, chilled water carries out exchange heat with air therein, and chilled water temperature raises, and enters after the accessory fan coil pipe comes out first evaporimeter and cold-producing medium heat exchange once more, emit heat and reduce self temperature, thereby form circulation.
In the floor radiant cooling initial start stage, by strengthening the accessory fan coil pipe wind speed and the freezing water yield, can make indoor air temperature reach desired value rapidly, remedy the deficiency that floor radiant cooling starts the precooling overlong time.
When indoor humidity load changes, by regulating second water pump, fan operation shelves number, control enters the freezing water yield and the wind speed of accessory fan coil pipe, when humidity load is big, increase the freezing water yield and the wind speed that enter the accessory fan coil pipe, humidity load hour reduces to enter the freezing water yield and the wind speed of accessory fan coil pipe.
Claims (7)
1. handpiece Water Chilling Units device based on the wet independent process of heat, it is characterized in that compressor (1) outlet connects the input of condenser (2), the input of the output termination reservoir (3) of condenser (2), the output of reservoir (3) links to each other with the input of filter (4), the output of filter (4) connects the input of first electric expansion valve (5) and the input of second electric expansion valve (7) respectively, the output of first electric expansion valve (5) connects the input of first evaporimeter (6), the first input end (1a) of the output termination compressor (1) of first evaporimeter (6), the input of output termination second evaporimeter (8) of second electric expansion valve (7), second input (1b) of the output termination compressor (1) of second evaporimeter (8); The input of chilled water output termination first water pump (9) of first evaporimeter (6), the output of first water pump (9) connects the input of flooring radiation coil pipe (10), the chilled water input of output termination first evaporimeter (6) of flooring radiation coil pipe (10); The input of chilled water output termination second water pump (11) of second evaporimeter (8), the input of the output termination accessory fan coil pipe (12) of second water pump (11), the input of output termination second evaporimeter (8) of accessory fan coil pipe (12).
2. the handpiece Water Chilling Units device based on the wet independent process of heat according to claim 1 is characterized in that compressor (1) is a double suction atmospheric pressure compressor.
3. the handpiece Water Chilling Units device based on the wet independent process of heat according to claim 2 is characterized in that described double suction atmospheric pressure compressor is air-breathing helical-lobe compressor or a digital scroll compressor in the middle of multi-cylinder piston compressor or the band.
4. the handpiece Water Chilling Units device based on the wet independent process of heat according to claim 1 is characterized in that first evaporimeter (6) and second evaporimeter (8), produces high temperature chilled water and cryogenic freezing water respectively.
5. the handpiece Water Chilling Units device based on the wet independent process of heat according to claim 1 is characterized in that accessory fan coil pipe (12) bears the room air humidity load, and the blower fan wind speed is adjustable in the accessory fan coil pipe (12).
6. the handpiece Water Chilling Units device based on the wet independent process of heat according to claim 1 is characterized in that first water pump (9), second water pump (11) are variable frequency pump or adjustable speed water pump.
7. the air-treatment method of the handpiece Water Chilling Units device based on the wet independent process of heat as claimed in claim 1, it is characterized in that entering condenser condenses cold-producing medium is compressed discharge in compressor after, enter reservoir after being condensed into liquid, filter through filter then, coming out afterwards from filter, cold-producing medium is divided into two-way, one the tunnel becomes gas-liquid two-phase through cold-producing medium after the first electric expansion valve throttling step-down enters first evaporimeter, cold-producing medium carries out heat exchange with chilled water therein, absorb heat of vaporization, produce the high temperature chilled water; Become overheated gas after cold-producing medium evaporates fully and enter compressor, be compressed discharge once more, thereby realize circulation from compressor first suction end;
Another road cold-producing medium is entered second evaporimeter through second electric expansion valve after the throttling step-down, cold-producing medium therein with the chilled water heat exchange, absorb heat of vaporization, produce cryogenic freezing water; Become overheated gas after cold-producing medium evaporates fully and enter compressor, compressed the back again by compressor and discharge, thereby realize circulation from compressor second suction end; In the high temperature chilled water circuit, chilled water in first evaporimeter with the cold-producing medium heat exchange, temperature reduces, come out to enter the flooring radiation coil pipe after the back is sucked pressurization by first water pump from first evaporimeter, chilled water, floor, air conduct, convection current and radiation heat transfer, raise from the flooring radiation coil pipe back chilled water temperature that comes out, and enter once more in first evaporimeter and the cold-producing medium heat exchange, reduce self temperature, thereby form circulation;
In the cryogenic freezing water loop, chilled water in second evaporimeter with the cold-producing medium heat exchange, temperature reduces, come out to be entered the accessory fan coil pipe after second water pump suction pressurization from second evaporimeter, chilled water carries out exchange heat with air therein, and water in air part is condensed, chilled water temperature raises, after the accessory fan coil pipe comes out, enter second evaporimeter and cold-producing medium heat exchange once more, emit heat and reduce self temperature, thereby form circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810023234A CN100595490C (en) | 2008-04-03 | 2008-04-03 | Water chilling unit based on hot moisture independent process as well as air-treatment method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810023234A CN100595490C (en) | 2008-04-03 | 2008-04-03 | Water chilling unit based on hot moisture independent process as well as air-treatment method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101251282A CN101251282A (en) | 2008-08-27 |
| CN100595490C true CN100595490C (en) | 2010-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810023234A Expired - Fee Related CN100595490C (en) | 2008-04-03 | 2008-04-03 | Water chilling unit based on hot moisture independent process as well as air-treatment method thereof |
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| CN (1) | CN100595490C (en) |
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2008
- 2008-04-03 CN CN200810023234A patent/CN100595490C/en not_active Expired - Fee Related
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