| 摘要 |
1. Abstract A method for heat exchanging in and work exchanging with a working fluid in a heat engine, or a heat pump if the method and its sub-processes are substantially reversed, is described, wherein a thermodynamic cycle for the working fluid is approximately described through the polytropic relation PVn = constant, where P is the pressure, V is the volume and n is the polytropic index of the working fluid with adiabatic index gamma (?), and wherein the engine consists of at least one working mechanism (1) provided with a first (150) and at least a second volume change chamber (151, 151'), the method comprising in sequence at least the following steps: a) in a first volume change process, to carry out a first polytropic volume change of the working fluid in a first volume change chamber (150) where n < Y, and b) in a second volume change process, to carry out at least one second near-adiabatic or polytropic volume change of the working fluid from a first (150) to a second (151) volume change chamber, where n < ?, or where a volume change starts with n < ? and ands near-adiabatic (n ?). Also described is a heat engine arrangement for practicing the method.
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