Working fluid of a blend of 1,1,1,3,3-pentafluoropane, 1,1,1,2,3,3-hexafluoropropane, and 1,1,1,2-tetrafluoroethane and method and apparatus for using
A technology of pentafluoropropane and hexafluoropropane, applied in the field of working fluid, can solve the problems of poor cycle performance and the like
Inactive Publication Date: 2009-02-25
HONEYWELL INT INC
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Problems solved by technology
When the condensing temperature exceeds this range, cycle performance deteriorates, and there is a risk of accidents rising due to excessive discharge pressure and temperature (generated by the compressor)
Method used
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[0022] Examples of working fluids of the present invention were prepared and their operating characteristics were evaluated in a heat pump system. Its running characteristics were compared with reference working fluids R114, R124 and 1-chloro-1,1-difluoroethane (R142b).
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There is a working fluid for a heating and cooling. The fluid is a blend of about 1% to about 98% by mass 1,1,1,3,3-pentafluoropane, about 1% to about 98% by mass 1,1,1,2,3,3-hexafluoropropane, and about 1% to about 98% by mass 1,1,1,2-tetrafluoroethane. The 1,1,1,3,3-pentafluoropane, 1,1,1,2,3,3-hexafluoropropane, and 1,1,1,2-tetrafluoroethane are about 90% or more by mass of the blend. There are also an apparatus that uses the blend and methods for heating and cooling using the blend.
Description
technical field [0001] The present invention relates to working fluids for heating / cooling devices. The present invention further relates to 1,1,1,3,3-pentafluoropropane (R245fa), 1,1,1,2,3,3-hexafluoropropane (R236ea) and 1,1,1,2-tetrafluoropropane Ethane (R134a) mixture working fluid. The present invention still further relates to a method of heating or cooling using the working fluid. The invention still further relates to a device for heating or cooling with the working fluid. Background technique [0002] Heat pumps have been used to elevate low-grade thermal energy, such as those derived from air, soil, surface or ground water, geothermal, solar and industrial waste heat and industrial process liquid streams, to high-grade thermal energy through thermodynamic cycles. A heat pump system has a compressor that applies energy to the low stage heat flow. Heat pump systems use a working fluid, a refrigerant, to facilitate the generation and transfer of heat through a the...
Claims
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IPC IPC(8): C09K5/04
CPCC09K5/045C09K2205/22
Inventor 孙蔼军
Owner HONEYWELL INT INC