Patent ID: 6349551
Filing Date: 2002-02-26
Classification: F25B

Abstract:
A method for transforming thermal energy into mechanical energy while simultaneously producing a refrigerant utilizing thermodynamic bottoming and topping cycles and binary working fluids, comprising:introducing a first gas/liquid working fluid mixture of a non-condensable first gas and a low temperature liquid into a low-temperature closed bottoming cycle; introducing a second working fluid gas into a topping cycle and compressing and expanding said second working fluid gas in said topping cycle to produce power; compressing said first gas/liquid working fluid mixture in a polytropic process in said low-temperature closed bottoming cycle, isobarically heating, and adiabatically expanding said first gas/liquid working fluid mixture to produce a refrigerant and power; and utilizing said refrigerant produced in said low-temperature bottoming cycle to cool and liquefy said second working fluid gas of said topping cycle and to facilitate rejection of waste heat.