Class 165/230 - Dewpoint controlled (e.g., control of cooling means by downstream temperature sensor to maintain controlled dewpoint of downstream air, etc.)

Subclass of Class 165 - Heat exchange
Definition: Subject matter including a means to control the temperature
No. of patents: 36
Last issue date: 07/01/2008

Number	Title	Issue Date
7392838	System and method for vehicle defogging condition calculation and control A method and apparatus for controlling a vehicle HVAC system to automatically defog a windshield glass and to prevent fogging or condensation of the windshield glass. The ambient air temperature and vehicle speed are measured and used to determine a windshield glass...	07/01/2008
7389813	Systems and methods for controlling local environment The present invention provides systems and methods of controlling local environment. In one embodiment, incoming air enters a contactor such the Direct Contact Cooler-Condenser (DCCC) where the air contacts water distributed on the contact media. After passing throu...	06/24/2008
7296621	Air conditioner for vehicles and method of controlling same A window glass dew-point compartment interior absolute humidity Xrmax is acquired, and a temporary compartment interior set absolute humidity Xset (temporary Xset) is determined from a compartment interior set temperature Tset. A smaller one of Xrmax and (temporary ...	11/20/2007
7264649	System for allergen reduction through indoor humidity control The invention provides a humidity control system (HCS) to control indoor humidity within a specified range so as to reduce indoor house-dust mite allergen levels. The invention also provides a hydrogel absorber/desorber for reversibly absorbing water vapor from air ...	09/04/2007
7261150	Apparatus for humidification and temperature control of incoming fuel cell process gas A method for humidifying and controlling the temperature of a process gas stream comprising the steps of super-saturating and heating the process gas stream with steam until it reaches a first pre-set temperature; cooling the process gas stream until it reaches a se...	08/28/2007
7237770	Humidifier for breathable gas apparatus A humidifier for use with a breathable gas supply apparatus includes a hollow body adapted for partial filling with water to a predetermined maximum water level, a gas inlet to the body above the maximum water level and a gas outlet from the body above the maximum w...	07/03/2007
7210523	Vehicle air conditioner A vehicle air conditioner has an air conditioning unit and an air conditioning control unit. The air conditioning unit has a FACE blowout port, a DEF blowout port, an upper blowout port. The air conditioning control unit estimates an outside windshield temperature a...	05/01/2007
7102501	Device and method for automatically preventing misting of the windscreen of a vehicle A device and method for automatically preventing misting of the windscreen of a vehicle, wherein a number of sensors determine ambient conditions capable of misting the windscreen, and, upon such ambient conditions occurring, an electronic central control unit autom...	09/05/2006
7051801	Method and apparatus for humidification and temperature control of incoming fuel cell process gas A method for humidifying and controlling the temperature of a process gas stream comprising the steps of super-saturating and heating the process gas stream with steam until it reaches a first pre-set temperature; cooling the process gas stream until it reaches a se...	05/30/2006
6966364	Systems and methods for controlling local environment The present invention provides systems and methods of controlling local environment. In one embodiment, incoming air enters a contactor such the Direct Contact Cooler-Condenser (DCCC) where the air contacts water distributed on the contact media. After passing throu...	11/22/2005
6926079	Humidity controller Methods and apparatus for controlling a climate control system for an enclosure, including a controller for operating a cooling system and a humidification system. The cooling system is operated to maintain the temperature of the air within the enclosure at a specif...	08/09/2005
6755035	HVAC system and method for conditioning air Outside air is treated to remove moisture before it enters the conditioned air space of a store or other building containing refrigeration furniture. The sensible air temperature and relative humidity measurements are taken to allow microprocessor calculations of th...	06/29/2004
6293116	Humidity control method for a variable capacity vehicle climate control system An improved vehicle climate control system in which the passenger compartment temperature and humidity are controlled without requiring a humidity sensor. The control is based on the recognition that the air temperature at the evaporator outlet represents...	09/25/2001
6279650	Temperature-Humidity controller for semiconductor equipment and controlling method thereof A temperature-humidity controller for a semiconductor equipment comprises a housing; an inlet pipe for introducing processing air, which has a discharging portion for flowing the air into an inner portion of the housing; a water supplying means for supply...	08/28/2001
6233917	Method of controlling the temperature of intake air, temperature-control device for carrying out the method and gas turbine having the temperature-control device A method of controlling the temperature of intake air provided from outside air passing through an air-feed system only utilizes an especially low heating of the intake air while at the same time safely avoiding the formation of ice in the intake air, in ...	05/22/2001
6189325	Air conditioning system for a motor vehicle An air conditioning system (10) for a passenger compartment of a motor vehicle having a windscreen comprises a first heat exchanger (14) positionable outside the passenger compartment; a second heat exchanger (18) positionable inside the passenger compart...	02/20/2001
6155061	Method of determining windshield fogging based on inference from presence of rain A method is provided of determining windshield fog secondary for automatically controlling a heating, ventilation and air conditioning (HVAC) system of a vehicle. The method includes the steps of determining whether rain is occurring on a windshield of a ...	12/05/2000
6079483	Temperature/humidity controller for use in an air conditioner and a recording medium storing temperature/humidity control programs used therefor In a main controller for use in an air conditioner for controlling temperature/humidity of an intaken outside air, a controlling line setter (18) sets each of control lines (J1 -J5) on a psychrometric chart table (13), in which an ai...	06/27/2000
5984002	Temperature and humidity control apparatus and temperature and humidity prediction apparatus used therefor A temperature and humidity control apparatus includes a humidity control section for controlling humidity when a flow rate of a low temperature fluid in a cooling dehumidifier composed of a heat exchanger is determined; a heater control section for contro...	11/16/1999
5971287	Method and system for regulating the mixed-air of a heating/air-conditioning system of a motor vehicle A method and a system for regulating the mixed air in a heating/air-conditioning unit (1) of a motor vehicle in which fresh air and/or recirculated air are fed to a heating/air-conditioning unit (1) which controls the feeding of fresh air and/or recircula...	10/26/1999
5915473	Integrated humidity and temperature controller A method of operating an HVAC system having an HVAC control and a humidity limiting control. The method comprises the steps of: determining a relative humidity limit for a space; monitoring relative humidity in the space; comparing the relative humidity t...	06/29/1999
5755282	Air conditioning apparatus preventing misting An air-conditioning apparatus for use in a vehicle includes bypass means for forming a bypass duct to allow the air which has passed through an evaporator to bypass an heater core, opening/closing means for opening and closing the bypass duct, and refrige...	05/26/1998
4932588	Method of controlling heating and/or air conditioning installation in motor vehicles A method of controlling climate in an interior of a vehicle, which method comprises the steps of measuring air temperature in the vehicle interior and outside of the vehicle, measuring relative humidity in the vehicle interior and outside of the vehicle, ...	06/12/1990
4909436	Wet atmosphere generation apparatus The invention described herein relates to an apparatus for providing a selectively humidified gas to a camera canister (12) containing cameras and film used in space. A source of pressurized gas (leak test gas 26 or motive gas 21) is selected by a valve (...	03/20/1990
4711294	Temperature and humidity control system A system for controlling the temperature and humidity of an enclosure such as a museum display case continuously extracts air from the enclosure, increases its humidity, cools it to a controlled temperature, at which point its humidity is 100%. The air is...	12/08/1987
4651812	Control apparatus for vehicle air conditioning system An air conditioning unit comprises a cooling unit and a heating unit and is provided with dehumidifying mode for drying the through-flowing air. The operation of the dehumidifier results in activation of the cooling unit compressor, which reduces the air ...	03/24/1987
4627568	Moisture eliminator for air washer An air conditioning system is disclosed which employs an air washer for treating variable volumes of air moving through the air washer per unit of time. The air washer includes a moisture eliminator that is provided with means for changing its effective f...	12/09/1986
4616777	Air-conditioning system An improved, energy-efficient method and apparatus for cooling and conditioning the air being supplied to an air-conditioned area in which the volumetric flow rate of the air being directed through a spray chamber is varied in response to changes in the h...	10/14/1986
4542851	Air conditioner for a coating booth An air conditioner for a coating booth wherein for the purpose of feeding the air into the coating booth at a predetermined temperature and humidity there are provided devices for heating the recirculating water in the storage tank to the dew point temper...	09/24/1985
4450898	Air conditioner for automotive vehicle An air conditioner for an automotive vehicle having an air conditioner compressor driven with a crankpulley of an internal combustion engine, with an electromagnetic clutch energized, and linked with an evaporator for cooling and dehumidifying the intake ...	05/29/1984
4399864	Controlling room-air temperature and humidity in an air-conditioning system An air-conditioning system for a work space in which recirculated air is mixed with outside air and the mixture is passed through a washer. The controls for the system include an absolute moisture controller in the primary air supply downstream from the a...	08/23/1983
4371027	Economizer with an integral gas bypass A method and means for extracting heat from an exhaust stack under highly corrosive and fluctuating conditions. An in-line exhaust gas heat exchanger having selective dual concentric exhaust paths and having a plurality of longitudinal structural stringer...	02/01/1983
4312189	Air condition system controlled responsive to the absolute humidity of air in a designated treated space Return air from a work area is so treated as to arrive at a prescribed temperature/humidity level responsive to a direct acting absolute humidity sensing and control apparatus. The return air is mixed with fresh air, then subjected to a water spray in an ...	01/26/1982
4142574	Optimized air conditioning system An optimized air conditioning control system is disclosed having a source of return air, a first source of outdoor air and a second source of outdoor air, the mixture of the first source of outdoor air and the return air is controlled at a temperature suc...	03/06/1979
4105063	Space air conditioning control system and apparatus In an air conditioning system for selectably heating and cooling an enclosed space under control of a room thermostat, dew point temperature of ambient air in the space is maintained below a preselected maximum value by modified use of the heating and coo...	08/08/1978
4103508	Method and apparatus for conditioning air A method and apparatus for providing temperature and humidity controlled air to an enclosed space within a building to achieve desired conditions of temperature and humidity therein, and which is characterized by the maximum use of the outside air for coo...	08/01/1978

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Class 165/230 - Dewpoint controlled (e.g., control of cooling means by downstream temperature sensor to maintain controlled dewpoint of downstream air, etc.)