Fuzzy Control Approach of Back Pressure Protection for Direct Air-Cooling Unit

2013 ◽  
Vol 7 (6) ◽  
pp. 104-111
Author(s):  
Chen Ning
Keyword(s):  
Fuzzy Control ◽  
Back Pressure ◽  
Air Cooling ◽  
Control Approach ◽  
Cooling Unit

600 MW Direct Air-Cooling Unit Back-Pressure Optimization and Theoretical Analysis

2014 ◽  
Vol 875-877 ◽  
pp. 1739-1743
Author(s):  
Hong Bin Zhao ◽  
Yong Hui Yan ◽  
Meng Li
Keyword(s):  
Efficiency Analysis ◽  
Exergy Efficiency ◽  
Back Pressure ◽  
Exergy Loss ◽  
Air Cooling ◽  
Power Gain ◽  
Cooling Unit ◽  
Before And After ◽  
Actual Operation ◽  
Fan Speed

In recent years, direct air cooling units have developed rapidly in China, but in the actual operation, the back-pressure often deviate from the optimal back-pressure, which affect the economy of the unit. The paper has figured out the optimum back-pressure, fan speed and power gain with the method of equivalent enthalpy drop; the paper also worked out the exergy loss of each device before and after the optimization. Through the exergy efficiency analysis of the devices before and after the optimization, we find out that after optimization, exergy loss of the turbine reduces by 0.954MW and the net amount of the generated power increases 130.5kW, the net exergy efficiency of units improves about 0.018 percent points.

Fault tolerant tracking of Mars entry vehicles via fuzzy control approach

2019 ◽  
Vol 371 ◽  
pp. 123-135 ◽  
Author(s):  
Tao Li ◽  
Zhuxiang Dai ◽  
Gongfei Song ◽  
Lihua Wang ◽  
Haiping Du
Keyword(s):  
Fuzzy Control ◽  
Fault Tolerant ◽  
Control Approach

scholarly journals INTENSIFICATION OF HEAT TRANSFER IN TUBES WITH FLUIDIZED LAYER

2020 ◽  
Vol 2018 (1) ◽  
pp. 12-12
Author(s):  
Kirill Zaharov ◽  
Aleksey Bal'chugov
Keyword(s):  
Heat Transfer ◽  
Heat Exchange ◽  
Air Cooling ◽  
Fluidized Layer ◽  
Cooling Unit

It is shown that one of the promising methods of heat exchange intensification in the air-cooling unit is the organization of a fluidized layer.

scholarly journals Improving the performance of the air-cooling unit in the cooling system of a radar

2021 ◽  
Vol 2057 (1) ◽  
pp. 012004
Author(s):  
Yu A Borisov ◽  
V V Volkov-Muzilev ◽  
D A Kalashnikov ◽  
H S Khalife
Keyword(s):  
Heat Exchanger ◽  
Gas Flow ◽  
Cooling System ◽  
Experimental Studies ◽  
Air Cooling ◽  
Axial Fan ◽  
Gas Dynamic ◽  
Cooling Unit ◽  
Calculation Results ◽  
Axial Fans

Abstract The article discusses the issues of reducing the size of the cooling unit of the antenna of a radar station by improving the gas-dynamic processes occurring in the air-cooling unit. The results of the experimental studies of the gas flow in a plate-fin heat exchanger, being blown by one axial fan are presented. The feasibility of changing the number of axial fans for organizing a more uniform flow around the heat-exchange surfaces has been determined by calculation and theoretical methods. The calculation results are confirmed by experimental studies of the air flow in the segment of the heat exchanger, which is provided by a smaller fan.

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