Three dimensional optimization of small-scale axial turbine for low temperature heat source driven organic Rankine cycle

2017 ◽  
Vol 133 ◽  
pp. 411-426 ◽  
Author(s):  
Ayad Al Jubori ◽  
Raya K. Al-Dadah ◽  
Saad Mahmoud ◽  
A.S. Bahr Ennil ◽  
Kiyarash Rahbar
Keyword(s):  
Low Temperature ◽  
Heat Source ◽  
Three Dimensional ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Small Scale ◽  
Axial Turbine ◽  
Temperature Heat ◽  
Dimensional Optimization

scholarly journals Investigation on a small-scale pumpless Organic Rankine Cycle (ORC) system driven by the low temperature heat source

2017 ◽  
Vol 195 ◽  
pp. 478-486 ◽  
Author(s):  
L. Jiang ◽  
H.T. Lu ◽  
L.W. Wang ◽  
P. Gao ◽  
F.Q. Zhu ◽  
...  
Keyword(s):  
Low Temperature ◽  
Heat Source ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Small Scale ◽  
Temperature Heat

Development of micro-scale axial and radial turbines for low-temperature heat source driven organic Rankine cycle

2016 ◽  
Vol 130 ◽  
pp. 141-155 ◽  
Author(s):  
Ayad Al Jubori ◽  
Ahmed Daabo ◽  
Raya K. Al-Dadah ◽  
Saad Mahmoud ◽  
Ali Bahr Ennil
Keyword(s):  
Low Temperature ◽  
Heat Source ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Micro Scale ◽  
Temperature Heat ◽  
Radial Turbines

Thermodynamic and economic optimization of a double-pressure organic Rankine cycle driven by low-temperature heat source

2020 ◽  
Vol 147 ◽  
pp. 2822-2832 ◽  
Author(s):  
Qingxuan Sun ◽  
Yaxiong Wang ◽  
Ziyang Cheng ◽  
Jiangfeng Wang ◽  
Pan Zhao ◽  
...  
Keyword(s):  
Low Temperature ◽  
Heat Source ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Economic Optimization ◽  
Temperature Heat

scholarly journals Experimental investigation and performance analysis of an Organic Rankine Cycle for low-temperature heat to electricity generation

2019 ◽  
Vol 14 (4) ◽  
pp. 500-507
Author(s):  
Lili Wei ◽  
Zhenjun Ma ◽  
Xuemei Gong ◽  
Xiujuan Guo
Keyword(s):  
Energy Efficiency ◽  
Low Temperature ◽  
Heat Source ◽  
Electricity Generation ◽  
Extraction Efficiency ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Working Fluid ◽  
Energy And Exergy ◽  
Temperature Heat

Abstract This paper presents experimental investigation of low-temperature heat to electricity generation system based on Organic Rankine Cycle (ORC) using R152a as the working fluid. Both energy efficiency and exergy efficiency were analyzed based on the experiments. Although energy efficiency was low to 5.0% when the evaporating and cooling temperatures were 65°C and 11°C, respectively, the exergy efficiency reached 25%, which showed great competitiveness among low-temperature heat utilization technologies. To reveal the energy recovery proportion from the waste heat, both energy extraction efficiency and exergy extraction efficiency as well as energy and exergy loss paths were analyzed. When the heat source was 65°C, 14.9% of the maximum possible thermal energy in the heat source was absorbed by the organic working fluid, and 10.7% was transferred to the cooling medium. The power output contributed 0.64%. A total of 1.8% of the exergy in the heat stream flowed to the cooling medium. The start-up work takes dramatically 0.16% and 1.7% of energy and exergy, respectively. Other energy and exergy loss occurs due to the irreversibility of the heat transfer process and expansion process. Cascade ORC system could enlarge the temperature difference of the heat stream and raise the power output. However, the energy efficiency of the multi-stage ORC system is lower than single-stage system, since there was a downward trend of the temperature of heat source for the latter stage. ORC cycle can lower the temperature of heat source to 45°C.

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