Heat transfer characteristics of a gas cooler

摘要

The paper deals with the design and simulation of a gas-water heat exchanger used for heating purposes.The heat exchanger represents the gas-cooler/water heater of a transcritical CO2 heat pump.The log-mean temperature difference and the NTU-s methods are comparatively analyzed.The heat transfer area can be calculated through both methods but the true strength and what makes the difference when using the NTU-s method is that based on it the simulation of the behaviour of an existing heat exchanger can be easily performed.