Patents Assigned to Electric Power Research
  • Mixtures of pentafluoropropane and a hydrofluorocarbon having 3 to 6 carbon atoms
    Patent number: 5800729
    Abstract: The invention discloses novel azeotrope-like mixtures of fluorinated compounds which are useful for heating and cooling as heat transfer agents and/or refrigerants. The azeotrope-like mixture comprises: (a) pentafluoropropane; and (b) a hydrofluorocarbon of the formula: C.sub.x F.sub.y H.sub.z, wherein x is 3, 4, 5, or 6 and y and z are each independently 1 or a positive whole number such that the result of y/(y+z) is greater than 0.67.
    Type: Grant
    Filed: July 25, 1996
    Date of Patent: September 1, 1998
    Assignee: Electric Power Research
    Inventors: David P. Wilson, Rajiv R. Singh, Rajat S. Basu, Ellen L. Swan, David Nalewajek