Active solar distillation technology: A wide overview

Augmentation of gas turbine performance using integrated EAHE and Fogging Inlet Air Cooling System

Response surface methodology based optimization of air-film blade cooled gas turbine cycle for thermal performance prediction

An increase in gas turbine efficiency is possible by inlet air cooling in chillers converting a heat of exhaust gas into refrigeration. In traditional absorption lithium-bromide chillers of a simpl...

Rational loads of turbine inlet air absorption-ejector cooling systems:

The performance of industrial gas turbines is closely tied to the intake air temperature and component performance degradation caused by fouling, erosion, and foreign object damage (FOD). Generally, under hot and humid conditions an increase in the ambient intake air temperature induces a decline in gas turbines performance. With this regard, inlet air cooling (IAC) is an established technique that has been applied to reverse the deteriorating effects of high air temperatures. In this study, a steady-state off-design model for a single-shaft industrial gas turbine (Taurus 70) with a variable geometry has been developed to analyze a cumulative effect of fouling and variable ambient conditions on gas turbines performance. The validation of GasTurb 12, simulations was achieved by comparing the results with the Solar Turbines product catalog. The study has been segregated into four different scenarios: (i) with inlet air cooling, (ii) without inlet air cooling, (iii) with Variable Inlet Guide Vane (VIGV) schedule, and (iv) without VIGV schedule. With an increase in fouling severity level, thermal efficiency and specific fuel consumption (SFC) showed clear deterioration. However, with the integration of the IAC technique, the thermal efficiency and SFC improved that translate into economic gain. A novel idea has also been explored to investigate the effect of VIGV scheduling on performance improvement. It is observed that the deployment of the VIGV schedule improves the thermal efficiency and SFC that were previously deteriorating due to fouling. Hence, it is concluded that the integration of inlet air cooling with variable geometry engine can improve the performance of industrial gas turbines especially in hot climate regions such as the Middle East and Southeast Asian countries. Â© 2020 Faculty of Engineering, Alexandria University

Combined effect of inlet air cooling and fouling on performance of variable geometry industrial gas turbines

Performance Improvement of Simple Gas Turbine Cycle with Vapor Compression Inlet Air Cooling

The present work deals with the thermodynamic analysis of a solar-powered triple combined power cycle to generate emission-free power. The triple combined cycle comprises one topping cycle as Brayt...

Thermodynamic investigation of solar energy-based triple combined power cycle

Nowadays, solar energy is attempted being utilised extensively to generate electrical power. Solar energy can be employed independently or with fossil fuels to reduce CO2 emission and the Levelized...

Recent advances in gas/steam power cycles for concentrating solar power

The combined cycle power plant consists of topping cycle, bottoming cycles and heat recovery steam generators (HRSGs) as the integral systems. The main focus of this work is to predict and analyse fluid flow behaviour in HRSG. The heat transfer and pressure drop analysis are performed by using computational fluid dynamics (CFD) model. The CFD model capability for predicting heat transfer and pressure drop performance of finned tube in cross-flow is analysed. The HRSGs having serrated tube and steady-state approach, with a two-equation turbulence model, is employed to examine fluid flow having Reynolds numbers variation from 5000 to 30,000. The external flow Nusselt number and overall pressure drop predicted by the CFD model are compared with those predicted by published empirical correlations.

Evaluation of Heat Recovery Steam Generator for Gas/Steam Combined Cycle Power Plants

The energy consumption has gradually increased in the current context. Fossil fuels are the primary source of energy for the world’s population. Furthermore, energy derived from fossil fuels has significant disadvantages, including increased pollution and global warming. Solar energy is the fastest-growing alternative to fossil fuels among the various energy options. As a result, the focus of the present work is on the thermo-economic analysis of a hybrid solar-assisted intercooled gas turbine (GT) and organic Rankine cycle (ORC) for waste heat recovery and power production at near-zero-emissions. The work outcome and maximum efficiency of the hybrid arrangement are 1342.12 kW and 71.12% respectively at the cycle pressure ratio of 8, and 443 K entry point turbine temperature. The economic model of the integrated system depicts that the unit power production cost for the combined system has been evaluated as 1932 e per kW.

Achintya Sharma

Papers

Performance Improvement of Simple Gas Turbine Cycle with Vapor Compression Inlet Air Cooling

Thermodynamic investigation of solar energy-based triple combined power cycle

Recent advances in gas/steam power cycles for concentrating solar power

Evaluation of Heat Recovery Steam Generator for Gas/Steam Combined Cycle Power Plants

Parametric Analysis of the Solar-assisted Intercooled Gas Turbine and Organic Rankine Cycle for Waste Heat Recovery and Power Production