| 摘要 |
PROBLEM TO BE SOLVED: To perform an efficient heat accumulation operation by accurately grasping residual amount of accumulated heat and accumulating heat just by a required amount. SOLUTION: A regenerative air conditioner is comprised of a heat storage type heat exchanger 8, in which the sum of average radius of latent heat storage medium 5 formed around a first heat transfer pipe when maximum heat accumulation is carried out and average radius of the latent heat storage medium 5 formed around a second heat transfer pipe adjacent to the first heat transfer pipe is set to be larger than a distance between the first heat transfer pipe and the second heat transfer pipe, and an accumulated heat quantity sensing means 10 for sensing the accumulated heat quantity. Quantity of accumulated heat and consumed quantity of accumulated heat of last several days are stored, quantity of accumulative heat required for a utilization cooling operation mode is calculated, on the basis of the the quantity of accumulated heat and the consumed quantity of accumulated heat, and when quantity of heat accumulated in the heat storage type heat exchanger 8 is smaller than a calculated value of required quantity of accumulated heat, a heat-accumulating operation is carried out and when the required quantity of accumulated heat is reached, the heat accumulating operation is stopped. |
