METHOD FOR CONTROLLING WATER TEMPERATURE OF CULTURE TANK AND CULTURE TANK SYSTEM THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a method for controlling the water temperature of a culture tank for activating fish and shellfish while saving the space and energy and provide a culture tank system to be used in the controlling method. SOLUTION: The culture tank 2 is provided with a heat pump 3 to heat or cool the water in the tank and a temperature controller 7 to control the heat pump 3 and adjust the water temperature detected by temperature sensors 8-15 to a target level. The method for controlling the temperature in the culture tank for the culture of fish and shellfish is composed of a heat-accumulation step to operate the heat pump 3 and accumulate heat in the water in the tank and a water-temperature changing step to slowly change the temperature in the culture tank 2 by stopping the operation of the heat pump 3. The accumulation step and the temperature changing step are alternately switched at a frequency of 1 cycle/day. COPYRIGHT: (C)2004,JPO