Method of operating heat pump

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United States of America Patent

PATENT NO 5241829
SERIAL NO

07849765

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
NISHIYODO AIR CONDITIONER CO LTD15-10 HIMESATO 1-CHOME NISHIYODOGAWA-KU OSAKA
OSAKA PREFECTURE GOVERNMENT1-22 OHTEMAE 2-CHOME CHUO-KU OSAKA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fujishima, Yukio Sakai, JP 2 46
Hatano, Yasuhiro Sakai, JP 9 103
Hatano, Yukitoshi Takatsuki, JP 1 29
Imoto, Taizo Higashi-osaka, JP 1 29
Irie, Toshimasa Neyagawa, JP 1 29
Ishikawa, Tamotsu Kyoto Prefecture, JP 4 49
Isoda, Tohru Takarazuka, JP 1 29
Kawabata, Masayuki Hirakata, JP 24 171
Miyauchi, Shuhei Izumisano, JP 2 33
Ogata, Masami Hirakata, JP 78 1137

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