To perform the refrigeration at a wide range of temperatures while avoiding the reduction of Coefficient Of Performance (COP) without using chlorofluorocarbon as a cooling medium.
The dual freezing equipment comprises a high temperature side compressor (11); a condensing tank (12) and an evaporative ice making tank (13), comprises a high temperature side circuit (10) which circulates water as a cooling medium to perform vapor compression refrigeration cycle; a low temperature side compressor (31); and an evaporative ice making tank (13) in the high temperature side circuit (10) and a turbine (34), and further comprises a low temperature side circuit (30) which circulates air as a cooling medium to perform an air refrigeration cycle. In the evaporative ice making tank (13), the evaporating temperature is a temperature at the triple point of water, and ice is made.
KURIHARA TOSHIYUKI
ODO KOREHIRO
Hiroshi Koyama
Hiroshi Takeuchi
Takahisa Shimada
Yuji Takeuchi
Katsumi Imae
Atsushi Fujita
Kazunari Ninomiya
Tomoo Harada
Takashi Goto
Iseki Katsumori