Multi-drying system

For composite construction system according to the present invention, after the thermal storage heat of cooling the microwave generator cooling water in the heat storage tank, by heat supplied to the heat pump, injection of the material to be dried, discharged and replaced, such as the operation of the microwave generator even if the stop can continue to supply the heat stored in the heat storage tank as a heat source of the evaporator, it is possible to secure stable ten won. Also, the evaporator has an advantage because it becomes possible that three fluid such as refrigerant, coolant and air at the same time the heat exchange, as well as the heat exchange efficiency can be improved, and the configuration is simple, because you do not need the installation of an additional heat exchanger.