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. 16, 1990
Filed:
Mar. 15, 1990
Bryan L Belcher, Leamington SPA, GB;
Rolls-Royce plc, London, GB;
Abstract
A heat exchanger suitable for placing air and cold hydrogen in heat exchanger relationship with each other comprises two concentric annular arrays of header tubes, all the header tubes in the radially outer array being in flow communication with a first manifold while half of the header tubes in the radially inner array are in flow communication with a second manifold and the remainder are in flow communication with a third manifold. Heat exchange pipes interconnect the various header tubes and air flows over those pipes. Various valves and pipes are provided and are operable to ensure that the heat exchanger functions in two modes of operation; a first in which cold hydrogen flows through all the heat exchange pipes in a single direction and a second in which the cold hydrogen flows through alternate heat exchange pipes in the opposite direction.