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:
Sep. 07, 1993
Filed:
Mar. 12, 1992
Toshimasa Irie, Neyagawa, JP;
Tohru Isoda, Takarazuka, JP;
Shuhei Miyauchi, Izumisano, JP;
Taizo Imoto, Higashi-osaka, JP;
Yukio Fujishima, Sakai, JP;
Yasuhiro Hatano, Sakai, JP;
Masami Ogata, Hirakata, JP;
Yukitoshi Hatano, Takatsuki, JP;
Tamotsu Ishikawa, Kyoto Prefecture, JP;
Masayuki Kawabata, Hirakata, JP;
Osaka Prefecture Government, Osaka, JP;
Nishiyodo Air Conditioner Co., Ltd., Osaka, JP;
Abstract
A method of operating a heat pump having at least one circuit for circulation of a refrigerant comprising a compressor, a once-through path, complete counterflow type condenser as a high-temperature heat output means, an expansion valve and a low-temperature heat output means (evaporator or a segregated low-stage circuit for circulation of a lower-boiling-point refrigerant), which comprises choosing a supercool degree, which is equal to the difference between a saturation temperature and an outlet temperature of the refrigerant, to satisfy the conditions that a temperature effectiveness of refrigerant liquid as defined by the formula: ##EQU1## is at least 40% and the temperature difference of the denominator is at least 35.degree. C. As a result, boiling water of ca. 100.degree. C. or other high-temperature fluids can be discharged with a large temperature difference.