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

Shukla, Anoop Kumar; Sharma, Achintya; Sharma, Meeta; Mishra, Shivam

doi:10.1016/j.matpr.2018.06.272

Cited by 28 publications

(9 citation statements)

References 11 publications

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“…The possibility of erosion and corrosion when water is sprayed with air in the inlet of the gas turbine is a limiting factor, even if it is very small [15]. Since the compressor is an essential component of the gas turbine, it directly affects the production of the plant, therefore the technology of cooling air entering the compressor can be used [16][17][18][19][20][21][22][23]. Barakat et al [24] they tested a hybrid cooling system that included an underground heat exchanger.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Gas Turbine Performance in Power Plant with High-Pressure Fogging System

Kadhim¹,

Abbas²,

Kadhim³

et al. 2023

MMEP

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Gas turbine power output is hypersensitive by environmental conditions, mainly in arid and hot climates. This research focuses on using a fogging air intake cooling system to improve the performance of the gas turbine in the weather conditions of Karbala city. The Aspen HYSYS software was used to simulate real data collected from the Karbala power plant (gas turbine). The simulation results were found for a gas turbine power plant with and without using the unit of air cooling. The results show there was a drop in inlet air temperature in the case of existence the cooling system when the ambient temperature in the range of (25 to 60)℃. The utilizing of air cooling technique with the gas turbine causes a gain in net power and thermal efficiency and reduction in the consumption of fuel. In addition, the heat rate reduces by 7% compared to not adding the system. However, the gas turbine plant shows better performance by employing the fogging system in the selected power plant when relative humidity below 40% and temperature exceed 30℃ during the summer months.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Gas Turbine Performance in Power Plant with High-Pressure Fogging System

Kadhim¹,

Abbas²,

Kadhim³

et al. 2023

MMEP

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“…18,19 The annual ∑CDH and cooling load profiles were investigated depending on the ambient temperature and humidity distribution. 18,20,21 A sinusoidal distribution of ambient temperature was proposed. 6,22…”

Section: Introductionmentioning

confidence: 99%

“…18,19 The annual P CDH and cooling load profiles were investigated depending on the ambient temperature and humidity distribution. 18,20,21 A sinusoidal distribution of ambient temperature was proposed. 6,22 In reality, any estimation method, used in thermal technologies and issuing from annual (monthly, seasonal) effect, based on the "hour-by-hour" or other time step by step calculation procedure to take into account actual varying site climatic conditions might be considered as based on cooling/heating degree hour (C/ HDH) numbers.…”

Section: Introductionmentioning

confidence: 99%

A novel degree-hour method for rational design loading

Radchenko

Mikielewicz

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part A:

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Cooling degree-hours (CDH) received the broadest application in evaluation of the ambient air cooling efficiency in power engineering (engine intake air cooling systems) and air conditioning. The current CDH numbers are defined as a drop in air temperature multiplied by associated time duration of performance and their summarized annual number is used to estimate the annual effect achieved due to sucked air cooling in power plants based on combustion engines (fuel saving, power output increment) and in air conditioning (refrigeration energy generation according to needs). A majority of approaches to designing ambient air cooling systems is proceeding from the cooling capacity of the chillers selected to provide a maximum current or annual CDH number with corresponding maximum current or annual effect (additional energy produced or fuel consumption reduction) in site climate location. But such approaches lead to inevitable oversizing the chillers and cooling systems in the whole. The analysis of intake air cooling efficiency in site varying climatic conditions, accompanied by quite a simple numerical simulation, enabled to reveal the potential of its enhancement and evaluate numerically the results of each step of designing in logical sequence. The new approaches to cooling system rational designing were introduced, that enables to synthesize and substantiate innovative principal decisions to exclude unproductive waste of installed (design) cooling capacity in actual operation. The innovative findings of methodological approaches include the use of the rate of annual CDH number increment as an indicator for selecting the optimum and rational values of design cooling capacity. The optimum cooling capacity corresponds to maximum rate of summarized annual CDH increment and maximum level of thermal loading accordingly, which provides minimum sizes of the chiller. In reality, it is a minimum permissible value of cooling capacity of the chiller installed and the overall ambient air cooling system. The rational cooling capacity, that enables to achieve practically maximum value of annual CDH and avoid chiller oversizing, is determined as the second, local, maximum of the rate in the summarized annual CDH over the range above the first one, global, maximum. A rational design cooling capacity determined by applying the novel methodology allows to decrease the ambient air cooling system sizes by 15 to 20% compared with traditional designing issuing from the peaked thermal load during a year. With this practically a maximum annual effect in fuel saving (energy generation or others) can be achieved too.

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“…Their application is quite effective in gas turbines of combined cycle with steam injection and based on them power plants. 48,49 A design refrigeration capacity of the cooling systems should be selected to cover the current needs and provide a closed to maximum annual effect avoiding oversizing. 50,51 A lot of researches deal with rational sizing the cooling systems 52,53 including cooling towers.…”

Section: Introductionmentioning

confidence: 99%

“…Their application is quite effective in gas turbines of combined cycle with steam injection and based on them power plants. 48,49…”

Section: Introductionmentioning

confidence: 99%

Rational loads of turbine inlet air absorption-ejector cooling systems

Radchenko

Kantor

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part A:

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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 simple cycle an inlet air can be cooled to 15°С. More decrease of turbine inlet air temperature and greater fuel saving accordingly is possible in refrigerant ejector chiller as a simple in design and cheap. The innovative turbine inlet air cooling (TIC) system with absorption chiller as a high-temperature and ejector chiller as a low-temperature stages for cooling air to 7 or 10 °C is proposed. Its application in temperate climate provides annual fuel saving by 1.5 to 2 times higher compared with traditional air cooling in absorption chiller to 15 °C. A novel universal method of analysing the efficiency of TIC system operation and rational designing has been developed. The method involves the simple numerical simulation based on real input data of site actual climatic conditions. The annual fuel saving is chosen as a primary criterion. The novelty of the methodological approach consists in replacing the current yearly changeable fuel reduction due to TIC by its hour-by-hour summation as an annual fuel saving. The increment of annual fuel saving referred to needed refrigeration capacity of TIC system is used as an indicator to select a design refrigeration capacity. A rational design refrigeration capacity determined by applying the novel methodology allows to decrease the TIC system sizes by 10 to 20% compared with traditional designing issuing from the peaked thermal load during a year. So far as it was developed analytically by introducing quite reasonable criterion indicator and based on the simple summation procedure the method is quite applicable for designing in power and energy.

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

Cited by 28 publications

References 11 publications

Evaluation of Gas Turbine Performance in Power Plant with High-Pressure Fogging System

Evaluation of Gas Turbine Performance in Power Plant with High-Pressure Fogging System

A novel degree-hour method for rational design loading

Rational loads of turbine inlet air absorption-ejector cooling systems

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