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.

Date of Patent:
May. 08, 2012

Filed:

Aug. 30, 2005
Applicants:

Yoshinori Nakagawa, Wako, JP;

Akihito Kasai, Wako, JP;

Tsutomu Wakitani, Wako, JP;

Inventors:

Yoshinori Nakagawa, Wako, JP;

Akihito Kasai, Wako, JP;

Tsutomu Wakitani, Wako, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02G 5/04 (2006.01); F02G 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A thermal demand priority type cogeneration system, is made operative for obtaining power output without thermal demand. When the temperature in a hot water tankis low, a heat request is output from a heat request generatorand thereby an engineis driven. When the temperature T higher than a predetermined temperature T, a first water supply instructing unitopens a valveand supplies water to the tankto decrease the water temperature T. When the water temperature goes down, thermal demand is generated, the engineis driven according to the heat request. So as to generate thermal demand, a discharge valvemay be opened when the water temperature T is at the predetermined temperature or higher. A second water supply instructing unitopens the valvewhen reserved water level in the tankgoes down. When the valveis opened, water is supplied and the water temperature goes down and thermal demand is generated. At a power failure of a commercial electric power system, thermal demand is generated forcibly.


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