The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 31, 1989
Filed:
Jan. 08, 1986
Amnon Yogev, Rehovot, IL;
David Mahlab, Yavne, IL;
Ormat Turbines (1965) Ltd., Yavne, IL;
Abstract
A composite working fluid for a Rankine cycle power plant operating between a boiler temperature and a condenser temperature comprises a mixture of immiscible fluids selected such that the saturated vapor line of the composite fluid in the vicinity of the boiler temperature is generally along a line of substantially constant entropy. As a result, the vapor of the composite working fluid expands from boiler to condenser temperature generally along the saturated vapor line of the composite working fluid. One of the immiscible fluids of the composite working fluid is a 'wet' fluid, and one of the immiscible fluids is a 'dry' fluid. The 'wet' fluid is a polar compound with a molecular weight smaller than the molecular weight of the 'dry' fluid, which is a non-polar compound. Preferably, the 'wet' fluid is water, and the 'dry' fluid is selected from a class comprising hydrocarbons and their halogenated derivatives.