WO2007106080A2 - Systeme de conditionnement d'air hybride a haut rendement - Google Patents

Systeme de conditionnement d'air hybride a haut rendement Download PDF

Info

Publication number
WO2007106080A2
WO2007106080A2 PCT/US2006/008685 US2006008685W WO2007106080A2 WO 2007106080 A2 WO2007106080 A2 WO 2007106080A2 US 2006008685 W US2006008685 W US 2006008685W WO 2007106080 A2 WO2007106080 A2 WO 2007106080A2
Authority
WO
WIPO (PCT)
Prior art keywords
air conditioning
conditioning system
temperature
hybrid
cooling
Prior art date
Application number
PCT/US2006/008685
Other languages
English (en)
Other versions
WO2007106080A3 (fr
Inventor
Xiaomei Yu
Lei Chen
Original Assignee
Carrier Corporation
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Carrier Corporation filed Critical Carrier Corporation
Priority to US12/224,775 priority Critical patent/US20090094991A1/en
Priority to EP06737824A priority patent/EP1994340A4/fr
Priority to PCT/US2006/008685 priority patent/WO2007106080A2/fr
Priority to CN2006800544945A priority patent/CN101636623B/zh
Publication of WO2007106080A2 publication Critical patent/WO2007106080A2/fr
Publication of WO2007106080A3 publication Critical patent/WO2007106080A3/fr
Priority to HK10104305.0A priority patent/HK1138355A1/xx

Links

Classifications

    • 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
    • F25B21/00—Machines, plants or systems, using electric or magnetic effects
    • F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
    • F25B21/04—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect reversible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0042—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater characterised by the application of thermo-electric units or the Peltier effect
    • 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
    • F25B2321/00—Details of machines, plants or systems, using electric or magnetic effects
    • F25B2321/02—Details of machines, plants or systems, using electric or magnetic effects using Peltier effects; using Nernst-Ettinghausen effects
    • F25B2321/021—Control thereof
    • 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
    • F25B2321/00—Details of machines, plants or systems, using electric or magnetic effects
    • F25B2321/02—Details of machines, plants or systems, using electric or magnetic effects using Peltier effects; using Nernst-Ettinghausen effects
    • F25B2321/025—Removal of heat
    • F25B2321/0251—Removal of heat by a gas

Definitions

  • the invention relates to a hybrid air conditioning system that uses conventional air conditioning equipment to provide primary temperature control and thermoelectric cooling and/or heating devices to provide localized temperature control.
  • the efficiency of hydronic cooling systems is dependent upon the chilled water setting temperature or the evaporator setting temperature. For a given system and a fixed ambient environment, the higher the temperature setting, the greater will be the system efficiency. Similarly, the efficiency of a heating system is directly dependent upon the condenser or heating water temperature in a conventional system. In this instance, again, for a given system and a fixed ambient environment, the lower the temperature setting the greater the system efficiency will be.
  • thermoelectric device consists of semiconductor materials that transfer heat from the first side or heat source side to a second side or heat sink side as charge carriers move through the materials.
  • Thermoelectric cooling and heating systems operate at higher efficiency when there is a small temperature difference between the heat source side and the heat sink side.
  • a thermoelectric device is also more responsive to the change in temperature settings, higher reliability and lower maintenance needs because they have fewer moving parts than conventional systems. Such systems are also more responsive to temperature settings, lower in weight, quieter and can be more accurately controlled.
  • Vapor compression and absorption based air conditioning systems are used for cooling residential and commercial buildings where multiple zone temperature control is the most efficient mode and provides the greatest comfort to occupants.
  • This on-demand zoning comfort control is difficult and expensive to realize using a conventional air conditioning system because the entire evaporator and condenser units have to be activated whenever there is a cooling need.
  • a hybrid air conditioning system incorporating thermoelectric cooling devices has the capability to operate for partial cooling without running the prime cooling system at all times. Such a hybrid air conditioning system will achieve both efficiency and comfort for users.
  • the conventional equipment can operate at a higher evaporator temperature or chilled water temperature compared to non-hybrid equipment. Therefore the cooling system is able to operate at a higher cooling efficiency.
  • a hybrid system for heating allows its conventional equipment to operate at a lower condenser or heating water temperature compared to the conventional application and the thermoelectric devices may operate at small temperature differential condition, whereby the hybrid system operates at a higher efficiency.
  • thermoelectric distributed system that enhances overall system efficiency and improved comfort level by utilizing waste heat and/or cool and redirected electricity in a more reliable and responsive system for zoned temperature control.
  • thermoelectric elements that can selectively provide zoned heating and/or cooling in the air conditioned space.
  • thermoelectric heating/cooling elements it is still yet a further object of the present invention to provide a hybrid system for an air conditioned space that uses conventional and the waste heat from thermoelectric heating/cooling elements to enhance the overall efficiency of the hybrid system.
  • FIG. 1 illustrates a block diagram of a conventional air conditioned space
  • Fig. 2 illustrates a block diagram of the hybrid system for the air conditioned space of the present invention
  • Fig. 3 illustrates a diagram of the operation of a thermoelectric element of the hybrid system of Fig. 2. according to the present invention
  • FIG. 4 illustrates a schematic view of a hybrid air conditioned space according to the present invention.
  • Fig. 5 illustrates a schematic view of a hybrid air conditioning system that uses return air as the heat sink of a thermoelectric cooling unit and is controlled by sensors.
  • FIG. 1 there is a block diagram of an air conditioned space 10, e.g. a large office, that is heated and cooled using a conventional air conditioning system of prior art.
  • a conventional space cooling system is operated using a compressor, and evaporator, an air diffuser and a thermostat (not shown).
  • Space 10 has an interior space 15 that may be subdivided into several units, e.g. rooms 20, 25, 30 and 35, having temperatures Ti, T 2 , T n -i and T n , respectively.
  • T se t represents the temperature to which a thermometer is set, for a cooling scenario.
  • Each of the temperatures T-i, T 2 , T n -i and T n are equal to the temperature of T set of the larger space.
  • Rooms 20, 25, 30 and 35 each have thermostat. Raising the temperature T 1 to a temperature above T se t in room 20 will be very difficult because of conduction from adjacent rooms 25, 30 and 35 and the entire space 10 are relatively cool. The response time to increase the temperature would be long.
  • the same inefficiency persists. Lowering a temperature in a localized space in a large hot area will not only consume energy, but the lowered temperature, by conduction to adjacent spaces will cool those areas to a degree as well, thus making the conventional system produce more heat.
  • Hybrid system 45 incorporates a conventional air conditioning system 46 and a localized thermoelectric air conditioning system 48.
  • air conditioned space 50 e.g. an office building space
  • T set ( H )- Space 50 contains several spaces, e.g. office rooms.
  • Spaces 60, 65, 70 and 75 are set at temperatures T-i, T 2 , T n -i and T n , respectively.
  • Further spaces 60, 65, 70 and 75 each contains a thermoelectric module 80, 85, 90 and 95, respectively.
  • Thermoelectric modules 80, m 85, 90 and 95 are controlled by localized thermoelectric air conditioning system 48.
  • Each thermoelectric module is capable of generating either a cooling effect or a heating effect depending on the direction of the flow of current from its power source.
  • Hybrid system 45 also has a temperature sensor 49 to monitor the overall temperature in the building spaces.
  • thermoelectric module 80 located in room 60 is shown operating in a cooling mode.
  • a DC voltage from a power source 115 is applied across module 80 having a series of P and N junctions 100.
  • Current 110 flows in the direction shown.
  • Junctions 100 in thermoelectric module 80 absorb heat from a surface 105 and release the heat to a surface 110 at the opposite side of module 80. Surface 105 where the heat energy is absorbed becomes cold and the opposite surface 110 where the heat energy is released becomes hot.
  • This "heat pumping" phenomenon known as the Peltier effect, is commonly used in thermoelectric refrigeration.
  • Heat exchangers 125 and 135 are used to transport cool air or heat away from thermoelectric module 80.
  • forced air from fan 130 can be used to cool room 60 as it blows through heat exchanger 125.
  • forced air from fan 140 is used to transport heat from heat exchanger 135 to heat other rooms 65, 70 or 75 or conventionally air conditioned space 50.
  • thermoelectric module 80 By using the waste heat from thermoelectric module 80, the efficiency of conventional air conditioned system is increased. Further, the conventional air conditioning system does not have to exclusively produce heat to heat other rooms, but can utilize heat from module 80 to heat the other rooms. Modules 85, 90 and 95 would operate in the same fashion in a heating operation, except that the current 110 would flow in the opposite direction.
  • thermoelectric modules in either a cooling application or a heating application in a localized space within a larger air conditioned space is that such modules contribute to the overall system efficiency of the hybrid system. Additionally, such a system will have reduced energy consumption costs associated with the conventional portion of the system. Further, the responsiveness of a system in achieving a desired temperature using thermoelectric modules is much greater than the responsiveness of conventional air conditioning system elements.
  • thermoelectric module 80 When thermoelectric module 80 is activated in the cooling mode, a surface 100 of thermoelectric module 80 becomes cool to lower temperature Ti (H ). Concurrently, surface 105 becomes hot and contributes to the warming of spaces 50, and rooms 85, 90 and 95 by conduction. Heat generated by thermoelectric module 80 reduces the amount of work that conventional system must provide to keep temperature
  • System 200 has a light duty conventional rooftop system 205 for conventional air conditioning.
  • System 200 has a compressor, an evaporator, a linear diffuser and other components associated with a conventional air conditioning system.
  • Room 210 has a thermoelectric module 215 for localized temperature control. When occupants of room 210 would like a warmer room temperature than the temperatures in the surrounding rooms, thermoelectric module 215 is activated to raise the local temperature in room 210. Cool air generated concurrently by thermoelectric device 215 will be distributed to rooms 220, 225 and 230, depending upon cooling needs.
  • system 200 would not have to work to maintain the lower temperature because of the waste generated by module 215.
  • a thermal sensor placed in common area 240 would monitor the temperature of the entire space in response to cool air from thermoelectric module 215, and would accordingly, adjust the amount of cooling to be provided by conventional system 200.
  • Monitor 245 optimizes the performance of system 200 in response to adjustments made to thermoelectric modules in each of rooms 220, 225 and 230. Monitor 245 offsets the amount to cooling or heating that conventional components of hybrid system 200 produce depending upon the waste heat provided by thermoelectric modules.
  • system 300 has a conventional outdoor air conditioning component 305, preferably situated on the roof of a building, and a thermoelectric component 315 located adjacent air conditioned space 310.
  • Thermoelectric component 315 has a side 320 and a side 325.
  • Conventional component 305 provides the primary cooling that may be set at a slightly higher temperature than the desired temperature. Cool air from conventional component 305 is forced through vents 335 by fans (not shown) to air conditioned space 310.
  • thermoelectric component 315 When thermoelectric component 315 is activated, side 320, in communication with air pre-conditioned, produces cold air to further contribute to the cooling of the space.
  • Return air 340 is used as the heat sink for thermoelectric component 315. A portion of the return air 340 is also circulated from air conditioned space 310 to refresh the air.
  • the air cooled by the conventional unit 305 can be further cooled by a thermoelectric component 315 to a desired temperature or outdoor air 345 can be cooled directly by the thermoelectric unit depending the requirement of cooling capacity that is determined by the demand of occupants.
  • Hybrid system 300 is preferably activated by sensor 350 such as temperature and air freshness sensor, e.g. a carbon dioxide sensor.
  • Hybrid system 300 is converted to a heating mode by changing the direction of flow of electricity in the thermoelectric component 315 and by changing the setting on conventional system 305.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air Conditioning Control Device (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)

Abstract

L'invention concerne un système de conditionnement d'air hybride à haut rendement (45) comportant un système de conditionnement d'air hybride classique (46) et des modules thermoélectriques (80, 85, 90, 95) pour assurer un chauffage et un refroidissement, les modules thermoélectriques (80, 85, 90, 95) fournissant de la chaleur perdue ou un refroidissement perdu de façon à moins solliciter le système de conditionnement d'air classique (46) pour réduire ainsi la consommation énergétique du système global (45) et en améliorer le rendement.
PCT/US2006/008685 2006-03-10 2006-03-10 Systeme de conditionnement d'air hybride a haut rendement WO2007106080A2 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US12/224,775 US20090094991A1 (en) 2006-03-10 2006-03-10 High Efficiency Hybrid Air Conditioning System
EP06737824A EP1994340A4 (fr) 2006-03-10 2006-03-10 Systeme de conditionnement d'air hybride a haut rendement
PCT/US2006/008685 WO2007106080A2 (fr) 2006-03-10 2006-03-10 Systeme de conditionnement d'air hybride a haut rendement
CN2006800544945A CN101636623B (zh) 2006-03-10 2006-03-10 高效率混合空调系统
HK10104305.0A HK1138355A1 (en) 2006-03-10 2010-04-30 High efficiency hybrid a/c system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2006/008685 WO2007106080A2 (fr) 2006-03-10 2006-03-10 Systeme de conditionnement d'air hybride a haut rendement

Publications (2)

Publication Number Publication Date
WO2007106080A2 true WO2007106080A2 (fr) 2007-09-20
WO2007106080A3 WO2007106080A3 (fr) 2009-04-09

Family

ID=38509919

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/008685 WO2007106080A2 (fr) 2006-03-10 2006-03-10 Systeme de conditionnement d'air hybride a haut rendement

Country Status (5)

Country Link
US (1) US20090094991A1 (fr)
EP (1) EP1994340A4 (fr)
CN (1) CN101636623B (fr)
HK (1) HK1138355A1 (fr)
WO (1) WO2007106080A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104566777A (zh) * 2013-10-28 2015-04-29 上海优爱宝机器人技术有限公司 用于定点定向温度控制的半导体空调装置

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN104566777A (zh) * 2013-10-28 2015-04-29 上海优爱宝机器人技术有限公司 用于定点定向温度控制的半导体空调装置
CN104566777B (zh) * 2013-10-28 2017-06-30 上海优爱宝智能机器人科技股份有限公司 用于定点定向温度控制的半导体空调装置

Also Published As

Publication number Publication date
EP1994340A2 (fr) 2008-11-26
US20090094991A1 (en) 2009-04-16
EP1994340A4 (fr) 2012-11-28
WO2007106080A3 (fr) 2009-04-09
CN101636623A (zh) 2010-01-27
CN101636623B (zh) 2012-01-18
HK1138355A1 (en) 2010-08-20

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