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Refrigeration > Automatic Control > Refrigeration Producer > Of Or By Evaporation Zone > Of Expansion Valve Or Variable Restrictor > By Condition At Low Side > At Or Beyond Evaporator Outlet, I.e., Superheat At Or Beyond Evaporator Outlet, I.e., SuperheatAt Or Beyond Evaporator Outlet, I.e., Superheat patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.12/20/07 - 20070289322 - Air handler unit fan installation and control method A method is provided including installing a variable frequency drive unit to drive a previously non-variable air handler fan of an HVAC system. The method includes setting a control strategy for the variable frequency drive. The control strategy includes a drive speed for each mode of the HVAC system. The ... 08/02/07 - 20070175229 - Method for controlling a pulsed expansion valve A method of controlling the duty cycle of a pulse width modulated expansion valve in order to achieve low and stable evaporator superheat is disclosed. Duty cycle is incremented/decremented if superheat is above/below a dead band, and, in a preferred embodiment, incremented/decremented if the time derivative of superheat is above/below ... 07/27/06 - 20060162358 - Superheat control by pressure ratio A control method regulates an electronic expansion valve of a chiller to maintain the refrigerant leaving a DX evaporator at a desired or target superheat that is minimally above saturation. The expansion valve is controlled to convey a desired mass flow rate, wherein valve adjustments are based on the actual ... 12/15/05 - 20050274133 - Refrigeration plant A refrigeration plant comprising a compressor having an inlet and an outlet, a condenser connected to the outlet of the compressor, an evaporator connected to the condenser and to the inlet of the compressor, and a regulation valve provided between the condenser and the evaporator. According to a peculiar feature ... 07/14/05 - 20050150240 - Supercritical refrigerant cycle system An object of the present invention is to improve a heat exchanging capability in an evaporator in a refrigerant cycle system in which a high pressure side is operated at a supercritical pressure. The refrigerant cycle system is a refrigerant cycle system in which a compressor, a gas cooler, an ... ### FreshPatents.com Support |