Abstract
This paper presents a study on the performance of heat exchanger equipped within the APT (Atmospheric Pressure Turbine) system that has been operated on the Inverted Brayton Cycle. The working temperature range is rather low to arise condensation of water vapor at the exhaust gas side. The performance of compact plate-fin type heat exchanger has been examined under the negative pressure region. It has been found that the temperature efficiency more than 95% at the cooling water side can be attained. The pressure drops on both side can also be evaluated.
