Thermodynamic analysis of combined cycle power plant using regasification cold energy from LNG terminal

Energy ◽  
2018 ◽  
Vol 164 ◽  
pp. 1-9 ◽  
Author(s):  
Lalatendu Pattanayak ◽  
Biranchi Narayana Padhi
Keyword(s):  
Power Plant ◽  
Thermodynamic Analysis ◽  
Combined Cycle ◽  
Combined Cycle Power Plant ◽  
Cold Energy

CCPP Performance Augmentation Using LNG Re-Gasification Cold Energy

2014 ◽  
Author(s):  
Mihir Acharya ◽  
Lalatendu Pattanayak ◽  
Hemant Gajjar ◽  
Frank Elbracht ◽  
Sandeep Asthana
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
High Efficiency ◽  
Clean Energy ◽  
Combined Cycle ◽  
Economic Feasibility ◽  
Air Cooling ◽  
Ambient Conditions ◽  
Combined Cycle Power Plant ◽  
Cold Energy

With gas becoming a fuel of choice for clean energy, Liquefied Natural Gas (LNG) is being transported and re-gasification terminals are being set up at several locations. Re-gasification of LNG leads to availability of considerable cold-energy which can be utilized to gain power and efficiency in a Gas Turbine (GT) based Power Plant. With a number of LNG Re-gasification Terminals coming up in India & around the globe, setting up of a high efficiency CCPP adjacent to the terminal considering utilization of the cold energy to augment its performance, and also save energy towards re-gasification of LNG, provides a feasible business opportunity. Thermodynamic analysis and major applications of the LNG re-gasification cold energy in Gas Turbine based power generation cycle, are discussed in this paper. The feasibility of cooling GT inlet air by virtue of the cold energy of Liquefied LNG to increase power output of a Combined Cycle Power Plant (CCPP) for different ambient conditions is analyzed and also the effect on efficiency is discussed. The use of cold energy in condenser cooling water circulating system to improve efficiency of the CCPP is also analyzed. Air cooling capacity and power augmentation for a combined cycle power plant based on the advanced class industrial heavy duty gas turbine are demonstrated as a function of the ambient temperature and humidity. The economic feasibility of utilizing the cold energy is also deliberated.

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