PREHEATING APPARATUS USING COOLANT OF VEHICLE

摘要

PURPOSE: A preheating apparatus using coolant of a vehicle is provided to perform fast heating by using an air conditioning system rarely used in winter. CONSTITUTION: Coolant is compressed in a compressor(3) and vented in the state of high temperature and high pressure. The coolant is condensed by a condenser(5) and expanded in the state of low temperature and low pressure easy to be evaporated while passing through an expansion valve(6) and then evaporated via an evaporator(8). Indoor air is cooled by repeated performance of a cycle transmitting heat of cooled fins to the indoor by a blower(9), and then pleasant environment is obtained. An air conditioning system is not used in winter. Thus, the evaporator is used as a condenser in winter to perform heating by flowing in the heat of coolant compressed at high temperature to indoor space.