scholarly journals Analisa Performa Pada Cooling Tower Jenis Mechanical Draft Crossflow

2021 ◽  
Vol 10 (1) ◽  
pp. 24-28
Author(s):  
Alvera Melkias
Keyword(s):  
Cooling Tower ◽  
Water System ◽  
Cooling Water ◽  
Secondary Cooling ◽  
Cooling Water System

Sistem pendingin pada unit PLTP terdiri dari dua macam sistem sirkulasi yaitu sistem air pendingin utama ( Main Cooling Water System ) yang melayani pendinginan pada kondensor dan sistem air pendingin sekunder ( Secondary Cooling Water System ) yang melayani pendinginan untuk peralatan bantu. Jenis cooling tower yang dipergunakan pada unit PLTP Kamojang adalah mechanical draft crossflow tower. Tujuan penelitian ini yaitu untuk menganalisis menara pendingin di Pembangkit Listrik Tenaga Panas Bumi Kamojang. Untuk mengetahui kinerja Cooling Tower pada saat dioperasikan, analisis kalor yang terevaporasi, kalor pendinginan dari air ke cooling tower serta nilai efektivitas Cooling Tower. Metode analisis yang digunakan adalah membandingkan nilai kalor evaporasi, kalor pendingin serta nilai efektivitas berdasarkan data desain dan data operasi pada sistem. Berdasarkan hasil perhitungan serta analisa yang telah dilakukan maka diperoleh kesimpulan bahwa kalor evaporasi pada data desain yaitu 242,437.76 kW dan kalor pendinginan 242,027.93 kW sedangkan pada data operasi kalor evaporasi sebesar 298,496.06 kW dan kalor pendinginan 298,374.40 kW. Nilai efektivitas pada data desain sebesar 64% sedangkan pada data operasi sebesar 59,37% adanya penurunan sebesar 4,63%.

scholarly journals Study on Energy Efficient Operation of Air-Conditioning Cooling Water System

2015 ◽  
Vol 9 (1) ◽  
pp. 53-60 ◽  
Author(s):  
Wang Liang ◽  
Yang Lu-lu ◽  
Tian Ya-bin
Keyword(s):  
Energy Consumption ◽  
Temperature Control ◽  
Cooling Tower ◽  
Operation Mode ◽  
Water System ◽  
Cooling Water ◽  
Outlet Temperature ◽  
Control Logic ◽  
Cooling Water System ◽  
Load Rate

The control logic of frequency adjustment for pump and cooling tower fan has been presented in this paper, based on the operation mode of a chiller with one pump and one cooling tower. Optimum outlet water temperature control of cooing tower has been put forward through analysis and comparison among factors influencing it, based on measured data. A mathematical model of energy consumption has been established under different outdoor wet-bulb temperature and load rate conditions. The optimized controlling strategy has been obtained after the analysis on energy consumption under two different operational strategies with different number of cooling towers in service. In partial load condition, the best operation mode of cooling water system is the optimal water outlet temperature control system, which aims at the lowest comprehensive system energy consumption. Cooling water system can match the best temperature difference and determine the fan frequency according to optimum outlet temperature automatically. Variable frequency control should be applied to fans; meanwhile, routing maintenance and cleaning is also needed for an even distribution of water and effective use of heat exchange area.

Thermal hydraulic transient analysis of ITER safety-relevant secondary cooling water system

2021 ◽  
Vol 165 ◽  
pp. 112244
Author(s):  
Lavinia Vicini ◽  
Nicolás Schiliuk ◽  
Eugenio Coscarelli ◽  
Giovanni Dell’Orco ◽  
Vincenzo Narcisi ◽  
...  
Keyword(s):  
Transient Analysis ◽  
Water System ◽  
Cooling Water ◽  
Secondary Cooling ◽  
Hydraulic Transient ◽  
Cooling Water System

Improving the Performance of Cooling Water Systems Using Exergy Analysis: A Novel Approach

2009 ◽  
Author(s):  
Mohammad Hassan Panjeshahi ◽  
Mona Gharaie ◽  
Lena Ahmadi
Keyword(s):  
Heat Exchanger ◽  
Exergy Analysis ◽  
Cooling Tower ◽  
Water System ◽  
Cooling Water ◽  
Water Systems ◽  
Exergy Destruction ◽  
Heat Exchanger Network ◽  
Cooling Water System ◽  
Circulating Cooling Water

Circulating cooling water systems almost serve all the operations of industrial plants where there is requirement of an external heat sink for heat removal and temperature control. Research on cooling systems focused on the energy analysis of individual components, cooling tower and heat exchanger network. However, the energy concept, alone is insufficient to describe the energy efficiency of the whole system. In this study, the exergy analysis is applied to evaluate the performance of the circulating cooling water system. To achieve this objective, the exergy destruction of the cooling tower and heat exchanger network in terms of different operational conditions are investigated. The results indicated that the exergy destruction in the cooling tower is increased by increasing the cooling tower inlet temperature; whereas the exergy destruction of the heat exchanger network decreases. Therefore, the problem of cooling water system for performance evaluation becomes an optimisation problem to search for the minimum exergetic destruction. Additionally, the second law efficiency of the cooling tower and water network is studied through the exergetic analysis.

Effect of diesel on corrosion inhibitors and application of bio-enzyme corrosion inhibitors in the laboratory cooling water system

2015 ◽  
Vol 93 ◽  
pp. 293-300 ◽  
Author(s):  
Fang Liu ◽  
Li Zhang ◽  
Xi Yan ◽  
Xianhui Lu ◽  
Ya Gao ◽  
...  
Keyword(s):  
Corrosion Inhibitors ◽  
Water System ◽  
Cooling Water ◽  
Cooling Water System
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