CN1826498A - Humidity control utilizing heat pump concept - Google Patents
Humidity control utilizing heat pump concept Download PDFInfo
- Publication number
- CN1826498A CN1826498A CNA2004800183365A CN200480018336A CN1826498A CN 1826498 A CN1826498 A CN 1826498A CN A2004800183365 A CNA2004800183365 A CN A2004800183365A CN 200480018336 A CN200480018336 A CN 200480018336A CN 1826498 A CN1826498 A CN 1826498A
- Authority
- CN
- China
- Prior art keywords
- air
- flow
- circuit
- heat pump
- cooling circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F3/153—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification with subsequent heating, i.e. with the air, given the required humidity in the central station, passing a heating element to achieve the required temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/06—Several compression cycles arranged in parallel
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Central Air Conditioning (AREA)
Abstract
A vapor compression system for allowing humidity control includes a plurality of vapor compression circuits including at least one cooling circuit and at least one heat pump operable circuit; the plurality of circuits being adapted to act upon a stream of air whereby a first portion is cooled by the at least one cooling circuit and a second portion is heated by the heat pump operable circuit whereby the stream of air can be dehumidified while maintaining a desired air stream temperature. As a result, such a system can have three modes of operation; cooling, heating and dehumidification with low sensible capacity as well as multiple steps of unloading. Furthermore, system reliability and complexity are improved and operation and control functions are enhanced.
Description
Background of invention
The present invention relates to a kind of steam compression system, relate more specifically to a kind of steam compression system and method for operating thereof that is used to provide humidity and sensible capacity control.
For example those are combined in heating, ventilation, air-conditioning and refrigeration (HVAC﹠amp; R) steam compression system in the system usually needs to provide humidity control and temperature control.
Moisture control function provides so that as required moisture is condensed from air-flow by cooling blast usually.Regrettably, this can cause air-flow to be cooled to the required degree well beyond the user.
The whole bag of tricks that is used to address this problem is known, and great majority relate to the hot gas that is used to from vapor compression circuit and come the hot air that has cooled off and dehumidified again.This hot gas can carry out heat exchange with the air that cools off and dehumidify, so that heat this air-flow and required end product is provided again.
Regrettably, this system has especially to descend and the relevant problem of cold-producing medium electric charge migration in cold environmental conditions (low ambientcondition), and the problem that occurs the systematic function marked change under the varying environment condition.Other method of having utilized refrigerant bypass to walk around condenser coil also has similar problem.In addition, other method, for example " geothermal liquid " is hot again, does not allow the sensible capacity (sensible capacity) that keeps low.
Therefore, still need a kind of improvement system and method for operating thereof that is easy to realize temperature control and humidity control.
Therefore, main purpose of the present invention provides such system and method.
But another object of the present invention provides a kind of multipurpose ground is used to the system and method that cools off, heat and/or dehumidify.
Other purpose of the present invention and advantage are as described in hereinafter.
Brief summary of the invention
According to the present invention, can easily realize above-mentioned purpose and advantage.
According to the present invention, a kind of steam compression system that comprises many vapor compression circuit that allows to carry out humidity control is provided, described many vapor compression circuit comprise at least one cooling circuit and at least one heat pump operable circuit; Described many loops are suitable for acting on the air-flow, make first be cooled off by described at least one cooling circuit, and second portion is heated by described heat pump operable circuit, thereby described air-flow is dehumidified, and keeps required air themperature simultaneously.
In addition,, provide a kind of method that is used to control the temperature and humidity of air-flow, may further comprise the steps: pending air-flow is provided according to the present invention; The steam compression system that comprises many vapor compression circuit is provided, and described many vapor compression circuit comprise at least one cooling circuit and at least one heat pump operable circuit; The first of described air-flow is supplied to described at least one cooling circuit, so that the air-flow through cooling and dehumidifying is provided; And the second portion of described air-flow is supplied to described heat pump operable circuit, so that heated air stream is provided; Therefore, described air-flow can be dehumidified, and keeps required air themperature simultaneously.
Brief description
Describe the preferred embodiments of the present invention in detail below with reference to accompanying drawing, wherein:
Fig. 1 schematically illustrates according to system of the present invention.
Describe in detail
The present invention relates to a kind of steam compression system and method for operating thereof, it allows dehumidifying, and can advantageously cool off, heats and reduce sensible capacity as required.
According to the present invention, realize this function like this, that is, be suitable for preferred by the loop that makes multiloop system can reverse mode operating as heat pump, thereby portion of air to be regulated can be heated, and other vapor compression circuit cooling air is so that dehumidify to it simultaneously.This can sequentially or individually carry out as required.
Fig. 1 schematically illustrates according to system 10 of the present invention, and it comprises many loops 12,14,16, each loop all be shown as have compressor 18, outdoor coil pipe used 20, expansion gear 22 and indoor coil 24.Air-flow 26 process indoor coil 24 are so that handle this air-flow as required.
According to the present invention, many loops 12,14,16 comprise a loop 12 that can be used as heat pump operation, and in this embodiment, reversal valve 28 is located in this loop.In this case, other loop 14,16 is configured to the refrigerating function that can provide required.Therefore, loop 14,16 is used to cool off the part 30,32 of evaporator air 26 in this embodiment, thereby therefrom removes moisture.Simultaneously, the loop 12 that can be used as heat pump operation is used for the heating part 34 of heating fumigators air 26, and these air part combinations in the downstream have caused forming that humidity reduces and can root need reduce or avoid basically the air-flow of sensible capacity.
The figure illustrates the part 30,32 of air-flow 26 and 34 independent or parallel processing.On the contrary, belong to and in the scope of the invention be, for example be supplied to air-flow 34 then so that carry out heat again, come air-flow 26 is carried out the processing of order by air-flow 32 being supplied to air-flow 30.Equally, can come air-flow 26 is carried out order and parallel processing by identical method with this two parts serial connection of air-flow and with third part and connect.
In addition, air-flow 26 or its part can be mixed with undressed air as required, for example, mix with outdoor air and/or the air that do not utilize coil pipe 24 to handle.
The operation in loop 12,14,16 shown in Figure 1 is well-known for a person skilled in the art, that is, cold-producing medium is flowed acting on the cold-producing medium so that provide between each parts of required function at coil pipe 20,24 places along refrigerant lines.
System 10 according to the present invention advantageously allows cold-producing medium to be used as the therefrom heat medium in the coil pipe 24 of process of part 34, and the wherein loop 14,16 of unit is used for part 20,32 is dehumidified as the remainder of refrigerating circuit operation.System 10 allows to return air and is cooled, so that remove moisture (latent heat load) by cooling circuit from the air of adjusted mistake.Simultaneously, heat pump circuit is used to increase heat and reduces the overall sensible capacity of unit therefrom, therefore in case chilled and heated air stream for example in the blower fan supply air system, mix, just can in occupied space, keep required dry dry bulb state.
Should be appreciated that loop 12,14,16 can advantageously be controlled to permission system 10 and possess three kinds of independently operator schemes.
At first, system 10 can operate under complete cold pattern, and wherein, reversal valve 28 is configured to make the loop 12 as cooling circuit to operate together together with loop 14,16.Full cold energy power just can be provided under this pattern, dehumidify as required and cool off allowing.Should be appreciated that if loop 12 is not provided with switching capability, so can by make loop 12 off lines and only individually operation circuit 14,16 this identical function is provided.
Second operator scheme as mentioned above, it is also referred to as low sensible dehumidification mode in this article, wherein, the dehumidifying of air-flow provides minimum cooling because of utilizing heat pump operable circuit to carry out heat to air-flow again.Should be appreciated that low sensible capacity cooling or heating can be operated according to the quantity of heat pump and at the cooling circuit of particular moment realizes.
At last, system 10 can operate with heating mode by using loop 12, and loop 12 is configured to can be used as heat pump and operates, and coincidence circuit 14,16 keeps inoperative basically.This flexibility according to system 10 of the present invention provides very big advantage.In addition, overcome the problem that is run in the legacy system.
As mentioned above, hot gas systems can have the refrigerant migration under cold environmental conditions and the problem of significant capacity variation usually.This problem has been eliminated by system of the present invention, and has improved the reliability of the systematic function under the cold environmental conditions.In addition, owing to the more accurate coupling of specified conditions and the remarkable reduction of startup/stall cycles quantity, therefore just improved the reliability and the control function of system.Equally, should be noted that each loop can be provided with the interior arrangement of the unloading or the ability of reduction in heating or cooling, thereby further improved the operation of system.
Similarly, in utilizing the system of geothermal liquid, the space that these systems occur through regular meeting is crossed cold problem and is also eliminated.
Understand easily, the invention provides improved dry bulb control and wet-out property, in addition, the present invention allows to reduce cost and reduce system complexity.
Be to be understood that, although system shown in Figure 1 10 has shown three loops, wherein one can be located between cooling circuit and the heat pump, yet, obviously belong in the scope of the invention is the loop that can provide other, wherein, one or more loop can be used as heat pump operation, and one or more loop can be operated under refrigerating mode.
It should also be understood that, although shown the present invention allows to utilize cooling circuit to handle a part of air-flow, and utilize heat pump circuit to handle different air-flow parts, yet belong to and in the scope of the invention be, can carry out the processing of order to this air, that is to say, whole air-flow is handled, at heat pump coil pipe place whole air-flow is handled then at the cooling coil place.
Should be appreciated that the handled air in heating and cooling loop can or mix with the combination of the undressed air of a part, perhaps these air parts backflow that can come from external environment condition or come from conditioned space.
It is also understood that this system can be configured to have the cooling and the heating circuit of any amount, and the parts of different size can be arranged to have in these loops.
Be appreciated that the present invention be not limited to described herein and shown in example, these examples are regarded as only having shown preferred forms of the present invention, can carry out the modification of form, size, parts setting and details of operation aspect to these embodiments.On the contrary, the present invention is intended to comprise all such modifications that belong in the spirit and scope of the invention that claims limit.
Claims (12)
1. one kind allows to carry out the steam compression system that humidity is controlled, and comprising:
Many vapor compression circuit, it comprises at least one cooling circuit and at least one heat pump operable circuit;
Described many loops are suitable for acting on the air-flow, make first be cooled off by described at least one cooling circuit, and second portion is heated by described heat pump operable circuit, thereby described air-flow is dehumidified, and keeps required gas flow temperature simultaneously.
2. system according to claim 1, it is characterized in that, described at least one heat pump operable circuit is optionally operated as cooling circuit with as heat pump circuit, therefore, described system can three kinds of operator schemes operate at least, comprise: refrigerating mode, operate as cooling circuit in wherein said many loops; Low sensible dehumidification mode wherein can be operated described at least one cooling circuit and cool off described first, and can be operated described at least one heat pump operable circuit and heat described second portion; And heating mode, wherein said at least one heat pump operable circuit can be used as heat pump and operates, and it is inoperative that described at least one cooling circuit keeps.
3. system according to claim 1 is characterized in that described loop has inner relieving capacity, therefore can control the temperature and humidity of described air-flow.
4. system according to claim 1 is characterized in that, described loop is arranged to sequentially to handle one air-flow.
5. system according to claim 1 is characterized in that, described loop is arranged to handle described first and described second portion concurrently.
6. system according to claim 1 is characterized in that, described loop be arranged to can to the serial connection that comprises described first and described second portion and and the described air-flow that connects the combination of part handle.
7. method that is used to control the temperature and humidity of air-flow may further comprise the steps:
Pending air-flow is provided;
The steam compression system that comprises many vapor compression circuit is provided, and described many vapor compression circuit comprise at least one cooling circuit and at least one heat pump operable circuit;
The first of described air-flow is supplied to described at least one cooling circuit, so that the air-flow through cooling and dehumidifying is provided; With
The second portion of described air-flow is supplied to described at least one heat pump operable circuit, so that provide through heated air stream; Therefore, described air-flow can be dehumidified, and keeps required air themperature simultaneously.
8. method according to claim 7 is characterized in that, described first and described second portion are located in reason separately, merges to get up so that combined airflow to be provided then.
9. method according to claim 8 is characterized in that, described method also comprises the flow rate of optionally controlling in described first and the described second portion, thereby controls the temperature and humidity of described combined airflow.
10. method according to claim 7 is characterized in that, described air-flow is supplied to described at least one cooling circuit as described first, and sequentially is supplied to described heat pump operable circuit as described second portion.
11. method according to claim 7 is characterized in that, described method also comprise to the serial connection that comprises described first and described second portion and and the described air-flow that connects the combination of part handle.
12. method according to claim 7 is characterized in that, described method also comprises makes mixing one of at least in be untreated air-flow and described first and the described second portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/610,984 | 2003-06-30 | ||
| US10/610,984 US20040261429A1 (en) | 2003-06-30 | 2003-06-30 | Humidity control utilizing heat pump concept |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1826498A true CN1826498A (en) | 2006-08-30 |
Family
ID=33541230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004800183365A Pending CN1826498A (en) | 2003-06-30 | 2004-06-24 | Humidity control utilizing heat pump concept |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20040261429A1 (en) |
| EP (1) | EP1642068A1 (en) |
| JP (1) | JP2007527494A (en) |
| CN (1) | CN1826498A (en) |
| WO (1) | WO2005005895A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7726140B2 (en) * | 2002-11-08 | 2010-06-01 | York International Corporation | System and method for using hot gas re-heat for humidity control |
| US9080798B2 (en) * | 2012-11-07 | 2015-07-14 | Hussmann Corporation | Control method for modular refrigerated merchandiser |
| US11555627B2 (en) | 2017-07-12 | 2023-01-17 | Emerson Climate Technologies, Inc. | Compressor capacity stage profile systems and methods for multi-compressor circuits each of which having multiple compressors |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2238689A (en) * | 1937-03-13 | 1941-04-15 | Honeywell Regulator Co | Air conditioning system |
| US2296822A (en) * | 1938-04-23 | 1942-09-22 | Westinghouse Electric & Mfg Co | Air conditioning apparatus |
| US2284764A (en) * | 1939-03-16 | 1942-06-02 | Vapor Car Heating Co Inc | Temperature controlled apparatus |
| US3994335A (en) * | 1975-03-06 | 1976-11-30 | Robertshaw Controls Company | Multizone air conditioning system |
| JP3799732B2 (en) * | 1997-04-17 | 2006-07-19 | 株式会社デンソー | Air conditioner |
| US5953926A (en) * | 1997-08-05 | 1999-09-21 | Tennessee Valley Authority | Heating, cooling, and dehumidifying system with energy recovery |
| US5992160A (en) * | 1998-05-11 | 1999-11-30 | Carrier Corporation | Make-up air energy recovery ventilator |
| US6644049B2 (en) * | 2002-04-16 | 2003-11-11 | Lennox Manufacturing Inc. | Space conditioning system having multi-stage cooling and dehumidification capability |
| US6705093B1 (en) * | 2002-09-27 | 2004-03-16 | Carrier Corporation | Humidity control method and scheme for vapor compression system with multiple circuits |
-
2003
- 2003-06-30 US US10/610,984 patent/US20040261429A1/en not_active Abandoned
-
2004
- 2004-06-24 CN CNA2004800183365A patent/CN1826498A/en active Pending
- 2004-06-24 JP JP2006518672A patent/JP2007527494A/en active Pending
- 2004-06-24 WO PCT/US2004/020130 patent/WO2005005895A1/en active Application Filing
- 2004-06-24 EP EP04755956A patent/EP1642068A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| WO2005005895A1 (en) | 2005-01-20 |
| US20040261429A1 (en) | 2004-12-30 |
| JP2007527494A (en) | 2007-09-27 |
| EP1642068A1 (en) | 2006-04-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |