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:
Mar. 14, 1989
Filed:
Nov. 23, 1987
Jean-Louis Ambrosino, Suresnes, FR;
Choua Cohen, Lyons, FR;
Jacques Cheron, Maisons Laffitte, FR;
Alexandre Rouey, Garches, FR;
Institut Francais du Petrole, Rueil-Malmaison, FR;
Abstract
The invention concerns non-azeotropic fluid mixtures useful in compression thermodynamic cycles, for example in heat pumps, comprising R23, R142b and optionally a fluid (c) other than R23 or R142b, selected from the group formed of methane and ethane halogenated compounds having a boiling point from -85 to +60.degree. C., in such molar proportions that the R23/R142b ratio range from 0.01:1 to 1.10:1 and the (R23+R142b)/(R23+R142b +c) molar ratio from 0.26:1 to 1:1. The mixtures according to the invention can be used as working fluid for heat pumps whose fluid circulates through an evaporator (E.sub.1), a compressor (K.sub.1), a condenser (E.sub.2) and a pressure reducer (D.sub.1). The thermal exchanges take place respectively with external fluids (5,6) and (7,8). The mixtures according to the invention may supply heat to the condenser at a temperature from +50 to +100.degree. C. while having an internal pressure generally limited to 0.3 MPa.