scholarly journals Analyzing the efficiency of moderate and deep cooling of air at the inlet of gas turbine in various climatic conditions

2019 ◽  
Vol 55 (1) ◽  
pp. 34-39 ◽  
Author(s):  
A. M. Radchenko ◽  
Y. Zongming ◽  
B. S. Portnoi
Keyword(s):  
Gas Turbine ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Lithium Bromide ◽  
Climatic Conditions ◽  
Air Cooling ◽  
Fuel Saving ◽  
Production Growth ◽  
Cooling Air

The efficiency of deep cooling air at the inlet of gas turbine unite to the temperature of 10 °С by waste heat recovery combined absorption-ejector chiller was analyzed in climatic conditions at Kharkov site, Ukraine, and Beijing site, China, and compared with the moderate cooling to the temperature of 15°C  in  traditional absorption lithium-bromide chiller. The  refrigerant  ejector chiller is chosen  as the most simple and  reliable in operation chiller. It  was used as the low-temperature stage for subcooling the air precooled in absorption lithium-bromide chiller to the temperature about 15 °C. Both waste heat recovery absorption  lithium-bromide chiller and ejector chiller use the  heat of  gas turbine unite exhaust gas to produce a cooling capacity. Air cooling at the inlet of gas turbine unite  was investigated for varying climatic conditions during the year.  The current values of  temperature depression with  cooling  ambient air to different temperatures of 10 °C and 15 °C and corresponding cooling capacities required were calculated. The comparison of  the  effect  due to gas turbine unite inlet air cooling was performed by annual fuel saving and power production growth. With  this the current values of turbine power output increase and specific fuel consumption decrease due to cooling inlet air from current varying ambient  temperatures to the temperatures of 10 °C and 15 °C were calculated.  It  was  shown that annual fuel saving and power production growth have increased by 1,8 times for Kharkov (Ukraine) site climatic conditions and  by 1,6 times  for Beijing (China)  site due  to  deep cooling air to the temperature of 10 °C  by  absorption-ejector chiller as compared with cooling inlet air to the temperature of 15 °C by absorption lithium-bromide chiller.

scholarly journals ПОРІВНЯННЯ ХАРАКТЕРИСТИК ГЛИБОКОГО ОХОЛОДЖЕННЯ ПОВІТРЯ НА ВХОДІ ГТУ ДЛЯ РІЗНОГО ТИПУ КЛІМАТУ

2020 ◽  
pp. 12-16
Author(s):  
Микола Іванович Радченко ◽  
Євген Іванович Трушляков ◽  
Богдан Сергійович Портной ◽  
Сергій Анатолійович Кантор ◽  
Ян Зонмін
Keyword(s):  
Gas Turbine ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Specific Capacity ◽  
Lithium Bromide ◽  
Ambient Air ◽  
Climatic Conditions ◽  
Air Cooling ◽  
Subtropical Climate ◽  
Different Temperatures

The efficiency of deep air cooling at the inlet of gas turbine units has been investigated for changed climatic conditions of operation during the month. For air cooling, the use of waste heat recovery chiller has been considered, which transform the heat of exhaust gases of gas turbine units into the cold. The efficiency of air cooling at the inlet of gas turbine units to different temperatures has been analysed: to 15°C – an absorption lithium-bromide chiller, which is used as the first pre-cooling stage of ambient air and down to 10°C – a combined absorption-ejector chiller, with ejector refrigerant chiller as the second stage of air cooling.The air cooling efficiency is estimated for different climatic conditions: a temperate climate on the example of Odessa (Ukraine) and a subtropical climate for Guangzhou (China). The subtropical climate peculiarity of Guangzhou is the high relative humidity of the air, respectively, and its moisture contents at the same time its high temperatures. As an indicator, when evaluating the efficiency of air cooling at the inlet of gas turbine units to 15°C in an absorption lithium-bromide chiller and deep cooling of air to 10°C in a combined absorption-ejector chiller, the specific fuel consumption reduced has been used. In this case, the needs for specific production of refrigeration capacity and specific capacity of cooling towers for cooling waste heat recovery chillers when cooling air to different temperatures are compared. It is shown that, through extremely different thermal and humidity parameters of ambient air, its cooling at the inlet of gas turbine units to 10ºС for the climatic conditions of Ukraine provides the current decrease in specific fuel consumption due to deeper cooling of the air at the inlet of the GTU in 1.6 ... 1.7 times compared with cooling to 15ºС, and for climatic conditions of the PRC - 1.4 ... 1.45 times. However, it should be noted that a deeper cooling of the air at the inlet of the gas turbine unit to a temperature of 10°C in a combined absorption-ejector chiller compared to its traditional cooling to 15°C in an absorption bromine-lithium chiller requires an increase in the required specific amount of cold by 1.7 ... 2, 0 times and the required specific capacity of cooling towers for cooling chillers by 2.6 ... 3.0 times for the climatic conditions of Ukraine, while for China - 1.25 ... 1.3 and 1.5 ... 1.6 times, respectively.

Gas turbine intake air cooling systems of combined type and their optimum designing

2020 ◽  
Vol 5 (2) ◽  
pp. 3-24
Author(s):  
Andrii M. Radchenko ◽  
Keyword(s):  
Low Temperature ◽  
Lithium Bromide ◽  
Climatic Conditions ◽  
Temperate Climate ◽  
Air Cooling ◽  
Fuel Saving ◽  
Cooling Systems ◽  
Exhaust Heat ◽  
Refrigeration Capacity ◽  
Cooling Air

Turbine intake air cooling (TIAC) by absorption lithium-bromide chillers (ACh) utilizing the exhaust heat is considered as the most effective fuel saving technology for temperate climatic conditions. But the cooling potential of TIAC systems based on ACh of a simple cycle is limited by a comparatively increased chilled water temperature of about 7°C excluding cooling intake air lower than 15°C. The application of a refrigerant as a coolant enables deeper cooling intake air to 10°C and lower. The application of two-stage hybrid absorption-ejector chillers (AECh) with a refrigerant ejector chiller (ECh) as a low temperature stage makes it possible to increase the annual fuel saving approximately twice in temperate climate due to deeper cooling air as compared with ACh. Furthermore, this effect can be achieved with the sizes of TIAC system reduced by about 20 % due to determining the rational refrigeration capacity of AECh providing practically maximum annual fuel saving increment and the use of the current excessive refrigeration capacities to cover peaked loads.

scholarly journals ОЦІНКА ЕФЕКТИВНОСТІ ГЛИБОКОГО ОХОЛОДЖЕННЯ ПОВІТРЯ НА ВХОДІ ГАЗОТУРБІННИХ УСТАНОВОК В РІЗНИХ КЛІМАТИЧНИХ УМОВАХ

2019 ◽  
pp. 48-52
Author(s):  
Микола Іванович Радченко ◽  
Ян Зонмін ◽  
Сергій Анатолійович Кантор ◽  
Богдан Сергійович Портной
Keyword(s):  
Gas Turbine ◽  
Waste Heat ◽  
Lithium Bromide ◽  
Ambient Air ◽  
Climatic Conditions ◽  
Temperate Climate ◽  
Air Cooling ◽  
Current Increase ◽  
Useful Power ◽  
Different Temperatures

The efficiency of deep air cooling at the inlet of gas turbine units of a simple scheme has been investigated for changed climatic conditions of operation during the month. For air cooling, the application of waste heat recovery chiller has been proposed, which transform the heat of exhaust gases of gas turbine units into the cold. The efficiency of air cooling at the inlet of gas turbine units to different temperatures has been analyzed: to 15°C – an absorption lithium-bromide chiller, which is used as the first high-temperature pre-cooling stage of ambient air and down to 10°C – a combined absorption-ejector chiller, which acts as the second low-temperature stage. The air cooling efficiency is compared for different climatic conditions using the example of Yuzhnoukrainsk (Ukraine) and Shanghai (China). The climate peculiarity of Shanghai is the high relative humidity of the air, respectively, and its moisture contents at the same time its high temperatures. As indicators for assessing the effectiveness of air cooling at the inlet of gas turbine units down to 15°C in an absorption lithium-bromide chiller and deep air cooling to 10ºС, in a combined absorption-ejector chiller used an increase in useful power and a reduction in specific fuel consumption. It is shown that, through extremely different thermal and humidity parameters of ambient air, it is cooling at the inlet of gas turbine units for the climatic conditions of Ukraine provides the current increase in useful power by 10...15%, and for the climatic conditions of China – 18…22%. However, it should be noted that deeper air cooling at the inlet of the gas turbine unite to a temperature of 10°C in a combined absorption-ejector chiller compared to its traditional cooling to 15°C in an absorption lithium-bromide chiller provides an increase in useful power for a temperate climate of Ukraine (for example, Yuzhnoukrainsk) by 70...90%, whereas for tropical climatic conditions of China (Shanghai) – by 30...35%.

Novel inlet air cooling with gas turbine engines using cascaded waste-heat recovery for green sustainable energy

Energy ◽  
2015 ◽  
Vol 93 ◽  
pp. 770-785 ◽  
Author(s):  
Yousef S.H. Najjar ◽  
Ahmad M. Abubaker ◽  
Ahmad F.S. El-Khalil
Keyword(s):  
Gas Turbine ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Sustainable Energy ◽  
Turbine Engines ◽  
Air Cooling ◽  
Gas Turbine Engines

A fuel saving estimation of gas turbine intake air cooling for climatic conditions in various regions of Libya

2016 ◽  
Vol 0 (2) ◽  
Author(s):  
Rami Kamel El Gerbi ◽  
Mykola I. Radchenko
Keyword(s):  
Gas Turbine ◽  
Climatic Conditions ◽  
Air Cooling ◽  
Fuel Saving

Optimal structure design of supercritical CO2 power cycle for gas turbine waste heat recovery: A superstructure method

2021 ◽  
Vol 198 ◽  
pp. 117515
Author(s):  
Chendi Yang ◽  
Yuanyuan Deng ◽  
Ning Zhang ◽  
Xiaopeng Zhang ◽  
Gaohong He ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Supercritical Co2 ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Structure Design ◽  
Optimal Structure ◽  
Power Cycle
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