Experimental Study of Optimal Load Characteristics of Low Temperature Heat Organic Ranine Cycle Power Generation

Abstract

Abstract:

The experimental study of the small organic Ranine cycle (ORC) power system performance under different heat resource temperature and different load resistance was conducted. The organic Rankine cycle power generation experimental system was built using scroll expander with the working fluid R600a utilizing low temperature heat. The results show that when the heat source temperature does not exceed 120 ℃, the experimental system has a maximum generating power of 1.05 kW and power generation efficiency of up to 4.51%, the scroll expander rotation speed and expansion ratio can reach 2 922 r/min and 3.03, respectively; There exists an optimum load resistance value which makes the power generation, unit power output and power generation efficiency ratio maximum under different heat temperatures and different working fluid mass flow rates. The scroll expander should match permanent magnet generator and the load when designing power systems so that the system can get the best performance.

Key words: low temperature heat, organic Ranine cycle (ORC), scroll expander, load resistance, match

CLC Number:

TK 17

TANG Lei，WANG Yuping，YANG Ping，WENG Yiwu. Experimental Study of Optimal Load Characteristics of Low Temperature Heat Organic Ranine Cycle Power Generation[J]. Journal of Shanghai Jiaotong University, 2014, 48(09): 1268-1273.

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