CN201074881Y - Independent fresh air air-conditioning system and water ring heat pump as fresh air unit - Google Patents
Independent fresh air air-conditioning system and water ring heat pump as fresh air unit Download PDFInfo
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- CN201074881Y CN201074881Y CNU2007200545545U CN200720054554U CN201074881Y CN 201074881 Y CN201074881 Y CN 201074881Y CN U2007200545545 U CNU2007200545545 U CN U2007200545545U CN 200720054554 U CN200720054554 U CN 200720054554U CN 201074881 Y CN201074881 Y CN 201074881Y
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Abstract
The utility model relates to a dedicated outdoor air system and a water-loop heat pump which is used as a fresh air handling unit, wherein the dedicated outdoor air system comprises a total heat exchanger, a water-loop heat pump fresh air handling unit and an induced tuyere, which are connected via conduits. The water-loop heat pump used as the fresh air handling unit comprises a finned tubular evaporator, a compressor, a plate-type water cooling condenser (or a bushing type water cooling condenser), an electronic expansion valve, a centrifugal fan and an auto-control component. The cooling water loops of a plurality of water-loop heat pumps in the system are connected in parallel to form a water ring, the finned tubular evaporator is redesigned for being suitable for the low temperature and big enthalpy difference processing in the dedicated outdoor air system, the leaving air temperature of fresh air is controlled in 7 DEG C or so by using the electronic expansion valve and the auto-control component. The utility model provides the dedicated outdoor air system with a fresh air handling unit which is flexible and convenient to install and use, and enables the complete air-conditioning system to have the characteristics of energy saving and consumption reduction, moreover, the indoor air quality is also high.
Description
Technical field
The utility model relates to a kind of independent fresh air conditioner system, refers in particular to the air-conditioning system that its new blower fan group adopts water-loop heat pump.
Background technology
Independent fresh air conditioner system refers to a kind of whole fresh wind air-condition system, new blower fan group adopts the cold air distribution unit, except bearing new wind load, also bear indoor whole latent heat load and part sensible heat load or complete sensible heat load, sensible heat load and separately processing of latent heat load in the air conditioning area have been realized, do not have condensed water to produce in the air conditioning area, realized the operation of air-conditioner tail end equipment capable dry cooling condition, therefore dedicated outdoor air system be otherwise known as " dry coil system " sometimes.
Independent fresh air conditioner system is compared with the all-air system of conventional belt return air, cancelled return air, but the air that air conditioning terminal (as the fan coil 3 of Fig. 1) is handled remains indoor return air, and just the return air in each room can not intersect mixings, has avoided the propagation of pollution and communicable disease.Energy of exhaust air reclaims by total-heat exchanger 5, has energy-saving significance; And the common directly discharge of the air draft of all-air system is outdoor, is not reclaimed.In addition, owing to the air output of resh air requirement far fewer than all-air system, the air duct blow energy consumption is little, so independent fresh air conditioner system had both had the feature that good air quality is provided, has considerable energy saving consumption reduction characteristic again.
Building energy conservation is one of great sign of Building technology progress, and in the annual total energy consumption of building air conditioning, the novel wind energy consumption accounts for 15%～24%, and promptly 1/6 to 1/5 of the annual energy consumption of air-conditioning will be used to handle new wind.Along with people require more and more higher to indoor air quality, U.S. heating refrigerating conditioner engineering Shi Xuehui standard will design resh air requirement and increase to original 2～4 times, China's national standard is also revised ventilation, and resh air requirement increases will further increase building energy consumption.
Independent fresh air conditioner system has considerable energy saving consumption reduction characteristic, classified as one of the most promising, state-of-the-art 15 air conditioner energy saving technology of 21 century commercial building by USDOE, its technical energy-saving potential index is number three in these 15 air conditioner energy saving technology.
The water-loop heat pump unit is meant a kind of application form of water/air heat pump type unit, promptly small-sized water/air heat pump unit is connected in parallel with water loops, form a closed loop, constitute a cover to reclaim the interior of building waste heat as the heat pump heating of its low level heat energy, the air-conditioning system of refrigeration.Its great advantage is: inner region is needed cooling, and outskirt needs the large tracts of land building of heat supply can realize refrigeration simultaneously simultaneously again and heats, and heat recovery function is arranged.
Its new blower fan group of independent fresh air conditioner system of implementing mostly needs extra low-temperature receiver cooling at present; handle new wind such as the form that adopts handpiece Water Chilling Units to add new wind wind cabinet; this just requires handpiece Water Chilling Units to provide not to be higher than 5 ℃ cold water; new wind wind pushing temperature is remained on below 7 ℃, therefore cause the handpiece Water Chilling Units low-temperature protection easily.And handpiece Water Chilling Units is taken up an area of greatly the use inconvenience.
Summary of the invention
Technical problem to be solved in the utility model is: the new blower fan group that carries low-temperature receiver is provided for independent fresh air conditioner system, make the installation and the flexible operation of new blower fan group convenient, make independent fresh air conditioner system have the characteristic and the high advantage of indoor air quality of energy-conserving and environment-protective concurrently.
For reaching this purpose, provide following technical scheme.
Independent fresh air conditioner system comprises total-heat exchanger, new blower fan group, induces the air port, is linked in sequence by pipeline, adopts water-loop heat pump as new blower fan group.The whole new wind load of new blower fan group burden is also born indoor whole latent heat load, and the part sensible heat load.Other sensible heat loads in the air-conditioned room still add the end-equipment burden by the cooling-water machine of routine, but its return air only circulates in same air-conditioned room, can not intersect with the return air in other rooms and mix.Outdoor new wind enters independent fresh air conditioner system, at first passes through total-heat exchanger, absorbs the cold of air draft, enters the new blower fan group of water-loop heat pump then and is cooled to required temperature, and is final through inducing the air port air-conditioned room of blowing.
Water-loop heat pump as the new blower fan group of independent fresh air conditioner system comprises evaporimeter, compressor, condenser, choke valve, centrifugal fan and self controlled element, and evaporimeter adopts the fin-tube heat exchanger of copper pipe cover aluminium foil, and front face area is 0.234～0.324m
2, evaporator tube row number is 8～10 rows, number of tube passes is 4～5 journeys, heat transfer area 35.6～46.1m
2, centrifugal fan air output 1500～1700m
3/ h.
As the water-loop heat pump of the new blower fan group of independent fresh air conditioner system, condenser adopts board-like water-cooled condenser.
As the water-loop heat pump of the new blower fan group of independent fresh air conditioner system, condenser adopts the bushing type water-cooled condenser.
As the water-loop heat pump of the new blower fan group of independent fresh air conditioner system, choke valve adopts electric expansion valve.
As the water-loop heat pump of the new blower fan group of independent fresh air conditioner system, compressor adopts frequency-changeable compressor.
As the water-loop heat pump of the new blower fan group of independent fresh air conditioner system, at evaporimeter and new wind air outlet place two thermistors are set respectively, monitoring evaporating temperature and evaporimeter leaving air temp obtain degree of superheat signal.
Because new wind comes from the external environment, the instability so new wind EAT fluctuates up and down, and new wind-warm syndrome degree after handling through new blower fan group will be maintained at about 7 ℃, this just requires water-loop heat pump fresh air processor group to possess automatic control ability.Existing water-loop heat pump unit adopts capillary as restricting element, and compressor is an invariable frequency compressor, and cold is regulated and adopted the dibit regulative mode of driving, stop compressor.The utility model then adopts electric expansion valve and frequency-changeable compressor, in conjunction with temperature sensor and microprocessor and control circuit, according to the variation of leaving air temp, reconcile compressor frequency, according to the evaporator outlet degree of superheat, reconcile electronic expansion valve opening, guaranteed the constant of new wind leaving air temp.
The beneficial effects of the utility model are, have high, the energy-saving and cost-reducing advantage of simple, flexible, energy-conservation characteristics of water-loop heat pump and independent fresh air conditioner system indoor air quality (IAQ) concurrently, the air-supply end-equipment can keep the dry cooling condition operation, breed bacteria not, whole air-conditioning system have considerable energy saving consumption reduction characteristic.
Description of drawings
Fig. 1 is the embodiment of the utility model independence fresh air conditioner system;
Fig. 2 is the embodiment of the utility model as the water-loop heat pump of new blower fan group.
The specific embodiment
In conjunction with the accompanying drawings, the specific embodiment is described.
As shown in Figure 1, independent fresh air conditioner system comprises air-to-air total heat exchanger 5, the new blower fan group 1 of water-loop heat pump, induces air port 2, is connected in order by pipeline.The thermic load of air-conditioned room 4 and humidity load are by two system burden.Independent fresh air conditioner system has been born whole new wind loads, and whole humidity loads of air-conditioned room 4.Fan coil 3 is in conjunction with the some or all of thermic load of handpiece Water Chilling Units (Fig. 1 is not shown) burden air-conditioned room 4.
Return air in the air-conditioned room 4 is voluntarily in indoor circulation, but do not intersect with the return air in other rooms.The air-conditioned room air draft discharge outdoor before through air-to-air total heat exchanger 5, self cold is passed to new wind 51, finally become air draft 52 and discharge.
Because new wind is cold air distribution, in order to prevent the air outlet condensation and to avoid Cryogenic air to fall to causing blowing feeling that the air port of inducing of adopting big induction ratio takes place.Inducing the air port is to adopt the isothermal jet principle.When air is the spout of Do by diameter, inject with air supply velocity Vo in the space of same temperature and spread, under the condition that be not subjected to interface surface restriction on every side, promptly form free jet.Because the turbulent momentum-exchange between jet boundary and surrounding medium, static on every side air constantly is involved in jet, along the range direction, jet constantly enlarges, jet flow constantly increases, and body stream axis speed is then decayed gradually, and constantly changes along range: along with flow range direction constantly increases, jet diameter strengthens, but the aggregated momentum of each section remains unchanged.The new wind of low temperature of inducing the air port to make to send is very fast near air outlet to be heated to indoor temperature by room air, has avoided the air outlet condensation, and make room air more evenly, improved the comfortableness of air-conditioning.
With the new blower fan group of water-loop heat pump as independent fresh air conditioner system, also the cooling water pipeline of many water-loop heat pumps can be together in parallel, form water ring.With other need the room of heat supply to link up in water loops and the large-area construction area, finish cooling and heat supply simultaneously, therefore have obvious energy-saving effect.
The new blower fan group of water-loop heat pump shown in Figure 2 has three circulations.
Cold-producing medium circular flow in the water-loop heat pump pipeline, according to the compression refigerating machine direction of routine, cold-producing medium arrives condenser 13 in the heat absorption vaporization of evaporimeter 11 places through compressor 12, after the water cooling that is cooled, gets back to evaporimeter 11 through choke valve 14.
Cooling water enters condenser 13 by water inlet pipe 131, will discharge along outlet pipe 132 after the refrigerant cools.As the new blower fan group of the independent fresh air conditioner system of building, the resh air requirement that separate unit water-loop heat pump unit provides is limited, therefore in actual conditions often some water-loop heat pumps move simultaneously.Can and link up the chilled(cooling) water return (CWR) of many water-loop heat pumps, water loops with needing the system of heat supply to couple together in other zones of building, has been realized the coproduction of cooling and heat supply, have considerable energy saving consumption reduction effect.
New wind enters the new blower fan group of water-loop heat pump by new wind air inlet 17 under the effect of centrifugal blower 15,11 places are cooled to needed temperature at evaporimeter, discharge from new wind air outlet 18, along pipeline by inducing air port 2 to enter into air-conditioned room 4.
The existing conventional water-loop heat pump is to use as the air conditioner end equipment that carries low-temperature receiver, be used to handle the waste heat of air-conditioned room, surplus wet amount, its cold wind only between 13～24kJ/kg, can not be used for the processing of the new wind of the big enthalpy difference of independent fresh air conditioner system low temperature than little.The utility model has been done novel design to water-loop heat pump, and make it to be fit to the new wind of the big enthalpy difference of low temperature and handle: the evaporimeter of employing is the fin-tube heat exchanger of copper pipe cover aluminium foil, and face velocity is 1.5～2.5m/s, and front face area is 0.234～0.324m
2, evaporator tube row number is 8～10 rows, number of tube passes is 4～5 journeys, heat transfer area 35.6～46.1m
2, centrifugal fan air output 1500～1700m
3/ h.The freon refrigerant that flows in the pipe evaporates at low temperatures, carries out heat exchange with the outer new wind that flows of pipe, and making new wind handle dry-bulb temperature is 6～7 ℃, the air condition of relative humidity 90%～95%, and cold wind is than between 50～60kJ/kg.
At evaporimeter 11 and new wind air outlet 18 places two thermistors are set respectively, monitoring evaporating temperature and evaporimeter leaving air temp, with the degree of superheat (evaporimeter leaving air temp-evaporating temperature) with the setting value deviation as controlled quentity controlled variable, micro computer is provided with the adjusting program, change electronic expansion valve opening, regulate refrigerant flow, change the refrigeratory capacity of evaporimeter.As controlled quentity controlled variable, micro computer is provided with the adjusting program with the deviation of leaving air temp and setting value, adjusts compressor frequency, as be overgauge, then increases compressor frequency, improves the compressor refrigeratory capacity, with the reduction leaving air temp; As be minus deviation, then reduce compressor frequency, reduce the compressor refrigeratory capacity, to improve leaving air temp.Reach the purpose of the new blower fan group of automatic control leaving air temp with this.
Claims (7)
1. independent fresh air conditioner system, comprise total-heat exchanger, new blower fan group and induce the air port, be linked in sequence by pipeline, it is characterized in that: new blower fan group is a water-loop heat pump, the evaporimeter of described water-loop heat pump is the fin-tube heat exchanger of copper pipe cover aluminium foil, and front face area is 0.234～0.324m
2, evaporator tube row number is 8～10 rows, and number of tube passes is 4～5 journeys, and heat transfer area is 35.6～46.1m
2, the centrifugal fan air output is 1500～1700m
3/ h.
2. water-loop heat pump as the new blower fan group of independent fresh air conditioner system, comprise evaporimeter, compressor, condenser, choke valve, centrifugal fan and self controlled element, it is characterized in that: evaporimeter is the fin-tube heat exchanger of copper pipe cover aluminium foil, and front face area is 0.234～0.324m
2, evaporator tube row number is 8～10 rows, and number of tube passes is 4～5 journeys, and heat transfer area is 35.6～46.1m
2, the centrifugal fan air output is 1500～1700m
3/ h.
3. the water-loop heat pump of the new blower fan group as independent fresh air conditioner system as claimed in claim 2, it is characterized in that: condenser is board-like water-cooled condenser.
4. the water-loop heat pump of the new blower fan group as independent fresh air conditioner system as claimed in claim 2, it is characterized in that: condenser is the bushing type water-cooled condenser.
5. the water-loop heat pump of the new blower fan group as independent fresh air conditioner system as claimed in claim 2, it is characterized in that: choke valve is an electric expansion valve.
6. the water-loop heat pump of the new blower fan group as independent fresh air conditioner system as claimed in claim 2, it is characterized in that: compressor is a frequency-changeable compressor.
7. the water-loop heat pump of the new blower fan group as independent fresh air conditioner system as claimed in claim 2 is characterized in that: two thermistors are set, monitoring evaporating temperature and evaporimeter leaving air temp respectively at evaporimeter and new wind air outlet place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200545545U CN201074881Y (en) | 2007-07-24 | 2007-07-24 | Independent fresh air air-conditioning system and water ring heat pump as fresh air unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200545545U CN201074881Y (en) | 2007-07-24 | 2007-07-24 | Independent fresh air air-conditioning system and water ring heat pump as fresh air unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201074881Y true CN201074881Y (en) | 2008-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200545545U Expired - Fee Related CN201074881Y (en) | 2007-07-24 | 2007-07-24 | Independent fresh air air-conditioning system and water ring heat pump as fresh air unit |
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| CN (1) | CN201074881Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292423A (en) * | 2013-06-21 | 2013-09-11 | 特灵空调系统(中国)有限公司 | Method for linking multiple online indoor units and total heat exchanger |
| CN105222292A (en) * | 2015-08-21 | 2016-01-06 | 浙江理工大学 | All-air conditioning experimental system |
| CN105940271A (en) * | 2014-01-31 | 2016-09-14 | 大金工业株式会社 | Ventilation device |
| CN108302731A (en) * | 2018-02-24 | 2018-07-20 | 佛山市知而行信息科技有限公司 | A kind of control method of fan coil supply air system |
-
2007
- 2007-07-24 CN CNU2007200545545U patent/CN201074881Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292423A (en) * | 2013-06-21 | 2013-09-11 | 特灵空调系统(中国)有限公司 | Method for linking multiple online indoor units and total heat exchanger |
| CN103292423B (en) * | 2013-06-21 | 2016-02-17 | 特灵空调系统(中国)有限公司 | A kind of method of multi-online indoor machine and total-heat exchanger interlock |
| CN105940271A (en) * | 2014-01-31 | 2016-09-14 | 大金工业株式会社 | Ventilation device |
| CN105940271B (en) * | 2014-01-31 | 2017-05-03 | 大金工业株式会社 | Ventilation device |
| CN105222292A (en) * | 2015-08-21 | 2016-01-06 | 浙江理工大学 | All-air conditioning experimental system |
| CN105222292B (en) * | 2015-08-21 | 2018-06-26 | 浙江理工大学 | All-air conditioning experimental system |
| CN108302731A (en) * | 2018-02-24 | 2018-07-20 | 佛山市知而行信息科技有限公司 | A kind of control method of fan coil supply air system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080618 Termination date: 20120724 |