Research on the Ultimate Performance of Organic Rankine Cycle Experimental System

Abstract

At present, fossil energy is depleted and environmental pollution is severe. Based on this context, renewable energy has begun to be paid attention to, among which ocean thermal energy conversion (OTEC) has received more and more attention. In this paper, the organic Rankine cycle (ORC) wasted heat power generation system is built. Through the experimental method of controlling variables, the effects of the temperature of the heat source and the flow rate of the working fluid on system performance are explored. The results show that: when the flow rate of the working fluid is constant, as the temperature of the heat source gradually increases, the generating power of the ORC system increases rapidly first and then increases slowly. When the temperature of the heat source remains unchanged and the flow of working fluid gradually increases, the generating power of the ORC system increases first and then decreases. At different temperatures, there is a corresponding optimal working fluid flow that maximizes the system output power, and the higher the temperature, the greater the system output power. Through experiments, it is found that the maximum generating power of the ORC system is 667.55W, the corresponding heat source temperature is 120°C, the working fluid flow is 470.64 kg/h, and the frequency is 90 Hz. The experiment also found that the relationship between the pulse damper frequency and the working fluid flow is linear.