Thermodynamic investigation of parameters affecting the execution of steam injected cooled gas turbine based combined cycle power plant with vapor absorption inlet air cooling

Shukla, Anoop Kumar; Singh, Onkar

doi:10.1016/j.applthermaleng.2017.05.034

Cited by 59 publications

(14 citation statements)

References 23 publications

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“…A critical issue concerning GT-based power plants is that the power output decreases considerably when the ambient temperature increases [2,15,16]. Especially in the summer, the ambient temperature can be far from the design temperature.…”

Section: Literature Reviewmentioning

confidence: 99%

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Performance prediction of the combined cycle power plant with inlet air heating under part load conditions

Wang

Liu

Cordtz

et al. 2019

Energy Conversion and Management

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A combined cycle power plant with inlet air heating (CCPP-IAH) system is proposed to solve the problems of ice and humidity blockages in winter climate. The performance of the CCPP-IAH system under part load conditions is analyzed via both experimental and simulation methods. The application of the inlet air heating technology significantly improves the part load efficiency and enhances the operational safety of the combined cycle power plant under complex meteorological conditions. Results show that a higher inlet air temperature will contribute a lower gas turbine thermal efficiency for proposed system. However, the heated inlet air by the recovered energy in heat recovery steam generator raises efficiencies for both the heat recovery steam generator and the overall system. The fuel consumption drops by 0.02 kg/s and 0.03 kg/s under the power load of 65 % and 80 %, respectively. The inlet air humidity decrease to 30 % under the heated inlet air temperature of 303 K. Moreover, the exergy destruction for both Brayton cycle part and Rankine cycle part decrease with the inlet air temperature increasing. The daily fossil fuel will raise up to 2.9 ton/day and to 5.1 ton/day under the power load of 65 % and 80 %, respectively. The annual economic benefit from energy saving is more than $ 5.88 10 5 and the payback period is less than 3 years.

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Section: Literature Reviewmentioning

confidence: 99%

“…More specifically, the exergy destruction of main components in the proposed CCPP-IAH system are calculated using the following equations [16,32].…”

Section: Exergy Analysismentioning

confidence: 99%

Performance prediction of the combined cycle power plant with inlet air heating under part load conditions

Wang

Liu

Cordtz

et al. 2019

Energy Conversion and Management

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“…Gas turbines (GT) are especially sensitive to intake conditions [8][9][10]: a specific fuel consumption increases by 0.4 to 1.0 g/(kWh) for every 1K rise in intake air temperature. A lot of ambient air cooling technologies were developed to enhance engine output [11][12][13]. The cheapest and most widespread in hot climatic conditions is a contact method by evaporation of water sprayed into air stream at the intake of GT compressor [14] and a novel contact cooling according to Maisotsenko cycle [15,16], but their efficiency is limited by the magnitudes of ambient air wet bulb temperature and they are not so effective in temperate climatic conditions.…”

Section: Introductionmentioning

confidence: 99%

Innovative Turbine Intake Air Cooling Systems and Their Rational Designing

et al. 2020

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The efficiency of cooling ambient air at the inlet of gas turbines in temperate climatic conditions was analyzed and reserves for its enhancing through deep cooling were revealed. A method of logical analysis of the actual operation efficiency of turbine intake air cooling systems in real varying environment, supplemented by the simplest numerical simulation was used to synthesize new solutions. As a result, a novel trend in engine intake air cooling to 7 or 10 °C in temperate climatic conditions by two-stage cooling in chillers of combined type, providing an annual fuel saving of practically 50%, surpasses its value gained due to traditional air cooling to about 15 °C in absorption lithium-bromide chiller of a simple cycle, and is proposed. On analyzing the actual efficiency of turbine intake air cooling system, the current changes in thermal loads on the system in response to varying ambient air parameters were taken into account and annual fuel reduction was considered to be a primary criterion, as an example. The improved methodology of the engine intake air cooling system designing based on the annual effect due to cooling was developed. It involves determining the optimal value of cooling capacity, providing the minimum system sizes at maximum rate of annual effect increment, and its rational value, providing a close to maximum annual effect without system oversizing at the second maximum rate of annual effect increment within the range beyond the first maximum rate. The rational value of design cooling capacity provides practically the maximum annual fuel saving but with the sizes of cooling systems reduced by 15 to 20% due to the correspondingly reduced design cooling capacity of the systems as compared with their values defined by traditional designing focused to cover current peaked short-term thermal loads. The optimal value of cooling capacity providing the minimum sizes of cooling system is very reasonable for applying the energy saving technologies, for instance, based on the thermal storage with accumulating excessive (not consumed) cooling capacities at lowered current thermal loads to cover the peak loads. The application of developed methodology enables revealing the thermal potential for enhancing the efficiency of any combustion engine (gas turbines and engines, internal combustion engines, etc.).

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“…The British SABRE engine [8] is an advanced engine device using pre-cooling combined propulsion system. TBCC refers to the power plant in which a turbine engine and other types of engines are combined [9]. A series of studies were carried out on TBCC both in the FaCAT project [10] and the RTA project [11].…”

Section: Introduction To Hypersonic Aircrafts and Combined Propulsionmentioning

confidence: 99%

Thermal Protection System and Thermal Management for Combined-Cycle Engine: Review and Prospects

et al. 2019

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Combined-cycle engine is a potential propulsion system for hypersonic aircraft. To ensure long-term, normal operation of combined-cycle engine under the harsh environment of high thermal load, it is of great significance to study the thermal protection and management of the propulsion system. In this study, the objective and development status of thermal protection and thermal management systems for the combined-cycle propulsion system were described. The latest research progresses of thermal protection, thermal barrier coating, and thermal management system of the combined-cycle propulsion system were summarized. Moreover, the problems and shortcoming in current researches were summarized. In addition, a prospect for the future development of thermal protection and management of the combined-cycle propulsion system was presented, pointing out a direction of great value and vital research significance to thermal protection and management of the combined-cycle propulsion system.

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Thermodynamic investigation of parameters affecting the execution of steam injected cooled gas turbine based combined cycle power plant with vapor absorption inlet air cooling

Cited by 59 publications

References 23 publications

Performance prediction of the combined cycle power plant with inlet air heating under part load conditions

Performance prediction of the combined cycle power plant with inlet air heating under part load conditions

Innovative Turbine Intake Air Cooling Systems and Their Rational Designing

Thermal Protection System and Thermal Management for Combined-Cycle Engine: Review and Prospects

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