Thermodynamic optimization of the operating parameters for a combined power cycle utilizing low-temperature waste heat and LNG cold energy

2013 ◽  
Vol 59 (1-2) ◽  
pp. 490-497 ◽  
Author(s):  
Huan Wang ◽  
Xiaojun Shi ◽  
Defu Che
Keyword(s):  
Low Temperature ◽  
Waste Heat ◽  
Operating Parameters ◽  
Thermodynamic Optimization ◽  
Power Cycle ◽  
Cold Energy

scholarly journals Thermoacoustic Stirling power generation from LNG cold energy and low-temperature waste heat

Energy ◽  
2017 ◽  
Vol 127 ◽  
pp. 280-290 ◽  
Author(s):  
Kai Wang ◽  
Swapnil Dubey ◽  
Fook Hoong Choo ◽  
Fei Duan
Keyword(s):  
Power Generation ◽  
Low Temperature ◽  
Waste Heat ◽  
Cold Energy

Exergy Analysis of Cascade Ethylene-Propane Rankine Cycle with Cold Energy Recovery of LNG

2012 ◽  
Vol 170-173 ◽  
pp. 2489-2493 ◽  
Author(s):  
Hong Mei Zhu ◽  
Hong Wei Liu ◽  
Heng Sun
Keyword(s):  
Low Temperature ◽  
Exergy Analysis ◽  
Rankine Cycle ◽  
High Energy ◽  
Primary Energy ◽  
Exergy Loss ◽  
Operating Pressure ◽  
Power Cycle ◽  
Cold Energy ◽  
Exergy Losses

Cascade Rankine power cycle is suitable for cold recovery in a CCHP system which uses LNG as the primary energy. It has the advantages of low operating pressure and high energy efficiency. Exergy analysis of a typical cascade ethylene-propane Rankine power cycle is conducted. The results show that the exergy losses mainly occur in the low temperature part of the cycle. The exergy loss in the LNG-ethylene heat exchanger could reach about 46% of the total exergy loss. Therefore, the reduction of the exergy losses in the low temperature is important for the improvement of the performance of cascade power cycle.

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