Efficiency Improvements in Combined Cycle Cogeneration Plant Through the Adoption of Heat Reclaimer

R. Blasetti¹, C. Sommariva², S. Govindarajan³

1.Sr. Process Engineer, ILF Consulting Engineer, Al Reem Island, 73250, Abu Dhabi, United Arab Emirates.
2.Managing Director, ILF Consulting Engineer, Al Reem Island, 73250, Abu Dhabi, United Arab Emirates.
3.Power Gen. Department Manager, ILF Consulting Engineer, Al Reem Island, 73250, Abu Dhabi, United Arab Emirates.

Abstract:

Due to the large seasonal difference between water and power demand matching power and water generation has been a general problem in the Middle East and has been the cause of several inefficiencies in combined power and desalination plant operation for long periods during the year particularly when power demand is low.

In particular while power demand is mainly dictated by the seasonal air conditioning load, it is well known that the water demand remains almost constant for the whole year.

In this situation the unbalance between the heat required by the thermal desalination plant and the heat available from the power plant becomes unbalance and to maintain the heat load for the desalination plant a substantial supplementary firing is generally required.

The paper aims at analyzing the fuel and carbon savings that could be achieved through the implementation of a state of the art heat reclaimer and the possible configurations that could be achieved. This paper also aims at providing an indicative financial return that justifies the financial viability of this concept.

Keywords: Combined Cycle Plant, Heat Reclaimer, HRSG, Thermal Desalination Plant, CO₂ savings.

Pages: 180 – 194 | Full PDF Paper