Test method and device for evaporator of organic Rankine cycle ORC system

The invention discloses a test method and device for the evaporator of an organic Rankine cycle ORC system. The test device comprises a refrigerant working medium circulating system, an external heat source system, an external cooling water system and a control system, wherein the refrigerant working medium circulating system comprises a liquid storage device, a variable-frequency high-pressure refrigerant pump, a refrigerant flowmeter, a liquid storage box with a conduction oil electric heater, the refrigerant side of an evaporator test piece, a variable cross-section throttle valve and the refrigerant side of a condenser. The test device has the characteristics that the throttle valve is used to replace an expansion machine which is very complicated in both structure and control in the conventional ORC system, and the variable-frequency high-pressure refrigerant pump is used to replace the compressor of the conventional refrigeration air-conditioning system, so that the performance of the evaporator under t