摘要:
Various uses of fluorinated alkenes, particularly HFO-1234 and HFCO-1233zd in a variety of applications, including refrigeration, foams, blowing agents, aerosols, propellants, solvent compositions, fire extinguishing and suppressing agents, extraction agents, and catalyst deposition are disclosed.
摘要:
A composition comprising 1,3,3,3-tetrafluoropropene (HFO-1234ze) and one or more compounds selected from the group consisting of 1,1,1,2-Tetrafluoroethane (HFC-134a), Difluoroethane (HFC-152a), water, 1,1,1,2,3,3,3-Heptafluoropropane (HFC-227ea), 1,1,1,3,3-pentafluoropropane (HFC-245fa), 1,1,1,3,3-pentafluorobutane (HFC-365mfc), water and CO 2 .
摘要:
Various uses of fluorinated olefin having an MIR value of less than ethane, in combination with one or more other components, including other fluoroalkenes, hydrocarbons; hydrofluorocarbons (HFCs), ethers, alcohols, aldehydes, ketones, methyl formate, formic acid, water, trans-1,2-dichloroethylene, carbon dioxide and combinations of any two or more of these, in a variety of applications, including as blowing agents, are disclosed.
摘要:
Disclosed are heat transfer fluids which possess a highly desirable and unexpectedly superior combination of properties, and heat transfer systems and methods based on these fluids. The heat transfer fluid comprise from about 30 to about 70 percent, on a molar basis, of carbon dioxide (CO2) and from about 30 to about 70 percent, on a molar basis, of hydrofluorocarbon (HFC), preferably HFC having one to two carbon atoms, and even more preferably trans-1,1,1,3-tetrafluoropropene (HFC-32). The preferred fluids of the present invention have a vapor pressure of at least about 100 psia at 40?F and are also preferably not azeotropic.
摘要:
Aspects of the present invention are directed to working fluids and their use in processes wherein the working fluids comprise compounds having the structure of formula (I): wherein R1, R2, R3, and R4 are each independently selected from the group consisting of: H, F, Cl, Br, and C1-C6 alkyl, at least C6 aryl, at least C3 cycloalkyl, and C6-C15 alkylaryl optionally substituted with at least one F, Cl, or Br, wherein formula (I) contains at least one F and at least one Cl or Br, provided that if any R is Br, then the compound does not have hydrogen. The working fluids are useful in Rankine cycle systems for efficiently converting waste heat generated from industrial processes, such as electric power generation from fuel cells, into mechanical energy or further to electric power. The working fluids of the invention are also useful in equipment employing other thermal energy conversion processes and cycles.
摘要:
Provided are azeotrope-like compositions consisting essentially of 1,1,1,2-tetrafluoropropene and 1,1,1,2-tetrafluoroethane and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants.
摘要:
This invention provides azeotrope-like compositions of 1, 1, 1, 2-tetrafluoroethane, 1,1,1,3,3-pentafluoropropane-245fa and water that are environmentally desirable for use as refrigerants, aerosol propellants, metered dose inhalers, blowing agents for polymer foam, heat transfer media, and gaseous dielectrics.
摘要:
A composition comprising 1,3,3,3-tetrafluoropropene (HFO-1234ze) and one or more compounds selected from the group consisting of 1,1,1,2-Tetrafluoroethane (HFC-134a), Difluoroethane (HFC-152a), water, 1,1,1,2,3,3,3-Heptafluoropropane (HFC-227ea), 1,1,1,3,3-pentafluoropropane (HFC-245fa), 1,1,1,3,3-pentafluorobutane (HFC-365mfc), water and CO 2 .
摘要:
Various uses of tetrafluoropropenes, particularly (HFO-1234) in a variety of applications, including refrigeration equipment, are disclosed. These materials are generally useful as refrigerants for heating and cooling, as blowing agents, as aerosol propellants, as solvent composition, and as fire extinguishing and suppressing agents.