The prospects of energy storage in gas turbine power plants

How to improve the performance of gas turbine based power plants?

Thermodynamic cycle developments, such as recuperation, inter-cooling or after-cooling and cycle integration, such as mixed air steam turbines (MAST) are among the possible ways to improve the performance of gas turbine based power plants at feasible costs.

Can thermal energy storage be used in gas turbine inlet air cooling?

This work is concerned with the investigation of thermal energy storage (TES) in relation to gas turbine inlet air cooling. The utilization of such techniques in simple gas turbine or combined cycle plants leads to improvement of flexibility and overall performance.

What is the efficiency of G-type gas turbine combined plant?

The state-of-the-art G-type gas turbine combined plant has an efficiency exceeding 59% Adapted from Improvement of Efficiency of Thermal Power Plant, ‘3. Gas Turbine,’ Thermal Power and Nuclear Power Plant Vol. 54 No. 10 (2003) p. 1176. (LHV base) and 53% (HHV base).

What is the efficiency of a gas turbine combined cycle plant?

Modem gas turbine combined cycle plants with a triple pressure heat recovery steam generator with steam reheat can reach efficiencies above 55%. Siemens/Westinghouse claims 58% efficiency , Alstom claims 58.5% efficiency and General Electric claims an efficiency of 60% .

Can mixed air steam turbines improve the performance of gas turbine based power plants?

Mixed air steam turbines (MAST) technologies are among the possible ways to improve the performance of gas turbine based power plants at feasible costs (e.g. peak load gas turbine plants). 1. Introduction Gas turbines in simple-cycle mode have long been used by utilities for limited peak power generation.

How can a gas turbine increase efficiency?

The Cheng cycle. By introducing steam injection in a gas turbine, an efficiency gain of about 10% and a power augmentation of about 50–70% are possible. Using a steam turbine to expand the steam, i.e. applying a conventional combined cycle instead of a Cheng cycle, gives higher efficiency gains.