Performance evaluation of two-stage turbine for the organic rankine cycle system

Lim, Hyung-Taek; Choi, Bum-Seog; Park, Moo-Ryong; Hwang, Soon-Chan; Park, Jun-Young; Seo, Jeong-Min; Bang, Je-Sung; Kim, Byung Ok

doi:10.1007/s12206-017-1127-8

Cited by 7 publications

(3 citation statements)

References 8 publications

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“…According to previous studies, although power loss is caused by the high frequency of the generator, it also keeps within a reasonable range with the progress of technology. 24–26…”

Section: Turbine Generatormentioning

confidence: 99%

“…Lim et al 18 designed and optimised the turbine generator for an ORC system at a 200 kW grade, through rotor dynamic analysis, rotor balancing, ball bearing stabilisation and spin tests. Finally, the performance of the improved turbine was evaluated in the ORC system; these procedures may be used as a reference to develop a modified ORC turbine.…”

Section: Introductionmentioning

confidence: 99%

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Experimental analysis of organic Rankine cycle power generation system with radial inflow turbine and R245fa

Lei

Liu

2020

Advances in Mechanical Engineering

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Small turbines must operate at high rotational speeds to generate adequate output power. In this study, a radial inflow turbine using R245fa as the working fluid is miniaturised and is designed to have a rotational speed of 30,000 r/min. The organic Rankine cycle system is not simplified, and a preheater and a superheater are installed. The turbine is experimentally analysed in the organic Rankine cycle system. The experimental results show that with an increase in the inlet pressure, the turbine output power and system efficiency increase; moreover, the turbine efficiency first decreases and then increases slightly after the pressure exceeds 1.5 MPa. The turbine efficiency decreases first and then increases and attains the minimum value at an inlet temperature of 100°C–105°C. When the flow rate is 0.82 m3/s, the speed reaches its maximum value of 28,000 r/min, and a maximum output power of 17.37 kW is generated. The maximum efficiency of the turbine is 0.885 and that of the system is 0.1625. The experimental data and design parameters of the turbine provide a reference for further design optimization.

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“…According to previous studies, although power loss is caused by the high frequency of the generator, it also keeps within a reasonable range with the progress of technology. 24–26…”

Section: Turbine Generatormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental analysis of organic Rankine cycle power generation system with radial inflow turbine and R245fa

Lei

Liu

2020

Advances in Mechanical Engineering

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“…Second, most organic liquids are poisonous and highly flammable. Therefore, the "shell and tube" type heat exchanger is easily adopted in the ORC system [10]. Numerous researchers have extensively studied the organic Rankine Cycle, focusing mainly on system structure, working fluid, and optimization of cycle parameters [11].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Using Different Refrigerants on System Performance in Two-Stage Organic Rankine Cycle

Kaplan

Özbek

2021

Çukurova Üniversitesi Mühendislik Fakültesi Dergisi

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In this study, energy analysis of a double-stage Organic Rankine Cycle (ORC) was performed using the Engineering Equation Solver program (EES). In the first and second stages, eight different organic working fluids (R134a, R410a, RC318, R407c, R22, R23, R116, and R218) were used in pairs for certain temperature limits. Choosing a suitable refrigerant or refrigerant pair is crucial for the ORC's high thermal efficiency and net work output value. This study aims to determine the effect of working fluid on system efficiency and find out the most suitable working fluid pair. The results showed that the highest net power output and the highest thermal efficiency were obtained from the R23+R23 pair. It was also observed that the lowest net power output from the RC318+RC318 pair and the lowest thermal efficiency was obtained from the R218+R218 pair.

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Design and testing of a 340 kW Organic Rankine Cycle system for Low Pressure Saturated Steam heat source

Wang

Dai

et al. 2020

Energy

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Performance evaluation of two-stage turbine for the organic rankine cycle system

Cited by 7 publications

References 8 publications

Experimental analysis of organic Rankine cycle power generation system with radial inflow turbine and R245fa

Experimental analysis of organic Rankine cycle power generation system with radial inflow turbine and R245fa

The Effect of Using Different Refrigerants on System Performance in Two-Stage Organic Rankine Cycle

Design and testing of a 340 kW Organic Rankine Cycle system for Low Pressure Saturated Steam heat source

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