Numerical Analysis and Optimization Research on Backflow Effect of Cooling Tower

Xiong, Xiu; Li, Li; Zhou, Xiaoqing

doi:10.1016/j.proeng.2017.10.073

Cited by 16 publications

(6 citation statements)

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“…The type of document most frequently used was the article type with a total of 498 publications (87.52%), followed by editorial material with 19 publications (3.33%), proceedings papers with 18 publications (3.16%), news item with 11 documents (1.93%), meetings abstract with 9 publications (1.58%), reviews with 9 publications (1.58%), letter with 4 publications (0.70%), and corrections with 1 publication (0.18%). The predominant language was English with 545 publications out of 569 publications, representing the 95.78%, followed by German (13), Spanish (6), Polish (2), Chinese (1), and Korean (1). Figure 1 shows a high increase in the number of publications from 2007 to 2017 presenting a linear behavior with a slope of 4.54 publications per year, which is a high number, evidencing the high importance of the cooling towers in the scientific community during that period.…”

Section: Publication Outputsmentioning

confidence: 99%

“…A practical and cost-effective way to accomplish this is through the use of cooling towers due to the direct contact between the fluids. Lots of experimental research has been done to optimize the performance of the cooling towers [1] studying the parameters that have the highest influence on heat and mass transfer, especially the type of packaging [2][3][4]. Most of the researches have focused on numerical simulation and modeling [5], the type of packing material inside the tower [6], and energetic and exergetic performance [7].…”

Section: Introductionmentioning

confidence: 99%

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Research evolution of cooling towers: a bibliometric analysis

Quiñones¹,

Forero²,

Ochoa³

2018

ces

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One of the most practical and economical ways to remove a great amount of heat generated from many types of equipment is through the use of packed cooling towers, as they offer important advantages because of the direct contact between the fluids. With the purpose to help in the development of new studies that give a high contribution to the mentioned topic, it is necessary to analyze its trend of research. To help researchers to achieve that aim, it was completed an analysis of the research development of cooling towers from 2007 to 2017, using the software HistCiteTM. This study assessed a total of 569 publications related to cooling towers which were used to evaluate the trends of publications outputs, countries, main language, institutions, author, main journal, and keywords. The Republic of China, the USA, and Iran were the top 3 most productive countries with 141, 66, and 55 publications respectively. The most productive institution was the

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Section: Publication Outputsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research evolution of cooling towers: a bibliometric analysis

Quiñones¹,

Forero²,

Ochoa³

2018

ces

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“…However, this first law-based energy analysis cannot provide the actual losses of the system in terms of efficiency and thermodynamic losses [1,[8][9][10][11][12][13][14][15][16][17][18]. Therefore, it is important that the energy conversion efficiency of a system be analyzed by considering both the first and second laws of thermodynamics [19][20][21][22][23][24]. Second law-based exergy analysis provides a better view of the energy losses to the environment and the process-related internal irreversibility.…”

Section: Introductionmentioning

confidence: 99%

Parametric Assessment of The Thermal Performance of Coal-Fired Power Plant

Khaleel

Ismail

Ibrahim

2021

ARFMTS

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Exergy analysis has been found to be a useful method for improving the conversion efficiency of energy resources, since it helps to identify locations, types and true magnitudes of wastes and losses. It has also been applied for other purposes, such as distinguishing high- from low-quality energy sources or defining the engineering technological limits in designing more energy-efficient systems. To identify locations, types, and actual magnitudes of energy losses; exergy analysis has been found to be a valuable way for enhancing the conversion efficiency of the different energy systems. The aim of this research is to analyze the effect of the operation conditions on the performance of coal-fired power plants. As well, this study focuses on the effect of different feedwater heaters' numbers that lead to the highest exergy destruction of the coal-fired power plants. For different values of the superheated steam temperature and the pressure, a parametric study was conducted to determine the efficiency of the coal-fired power plant. The results show that, when the pressures and temperature of the superheated steam increases the evaporator temperature will increases too. Increasing the temperature of evaporator rises the average maximum temperature of the cycle, which improves the thermal efficiency of the cycle as well as the powerplant efficiency. The results show that, at higher boiler pressures and temperatures, the temperature difference between the water/steam and hot gases of the boiler is reduced which means the irreversibility associated with the heat transfer process decreases. Therefore, by increasing the pressure and temperature of the superheater, the exergy efficiency of the thermal cycle is improved. It was observed that operating the coal-fired power plant at high superheated pressure and temperatures produce lead to reduce the exergy losses.

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“…The piping system on the nitrogen compressor shows that there is possibility backflow to the standby equipment [3][4]. Besides, the phenomenon of turbulence in pipe flow caused by boundary condition on pipe-wall and also appears confluence of two flows and the influence of flow velocity [5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Compressor Piping Design Effect on Vibration Data

Suryadi

Yanuar

Gunawan

2021

ARFMTS

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One of the systems for oil and gas production supports is the nitrogen compression system. Problem found that condition of the compressor has high vibration with the maximum overall the first compressor is 9,813 mm / s RMS, the second compressor is 7,439 mm / s RMS, the third compressor is 7,430 mm / s RMS, the fourth compressor is 13.47 mm / s RMS, the fifth compressor is 13,220 mm / s RMS, and sixth compressor already damaged. This research will discuss the nitrogen compression process in terms of the characteristics of the output fluid flow from the compressor using computational fluid dynamics. The first piping system shows that the standby compressor's flow has a higher pressure reaching 10.72 - 11.82 Pa but it is still acceptable. The second piping system with two compressors in operation shows that the pipeline flows in the opposite direction with high pressure. Flow turbulence occurs, resulting in a higher speed. The highest pressure in the pipeline reaches 44.79 Pa, mostly at the fifth and sixth compressors. The conclusion from this research there is high pressure backflow when one compressor stops and another compressor start running. Prevents direct pressure to the compressor or the condensed fluid from the gas flowing and entering the compressor used valve addition.

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Numerical Analysis and Optimization Research on Backflow Effect of Cooling Tower

Cited by 16 publications

References 0 publications

Research evolution of cooling towers: a bibliometric analysis

Research evolution of cooling towers: a bibliometric analysis

Parametric Assessment of The Thermal Performance of Coal-Fired Power Plant

Compressor Piping Design Effect on Vibration Data

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