| 摘要 |
<P>PROBLEM TO BE SOLVED: To make preventable freezing in a supercooler. <P>SOLUTION: This supercooled water manufacturing equipment I comprises a heat pump device 1 having a compressor 7, a condenser 8 and an expansion valve 9 with a shell 3 of the supercooler 2 as an evaporator and a cold water circulating device 11 for circulating and supplying water 6 to a tube 5 of the supercooler 2. A cold water outlet thermometer 24 is arranged in a position having no flow of supercooled water 6a in an outlet side header chamber 21 of the tube 5 of the supercooler 2. A heat pump control device 26 is provided for performing compressor capacity control by feedback of a supercooled water temperature and compressor capacity control for preventing the deterioration in the supercooling approach in a switching system on the basis of a saturated vapor temperature condition calculated from a detecting value of a saturate vapor pressure gauge 25 arranged in the shell 3 and a supercooled water temperature condition detected by the cold water outlet thermometer 24. When the supercooler approach is deteriorated, a supercooling approach deterioration preventive control is performed in preference to supercooled water temperature feedback control. <P>COPYRIGHT: (C)2004,JPO |
