An exergy analysis on the performance of a counterflow wet cooling tower

Muangnoi, Thirapong; Asvapoositkul, Wanchai

doi:10.1016/j.applthermaleng.2006.08.012

Cited by 76 publications

(32 citation statements)

References 9 publications

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“…Most manufacturing processes, power generating systems as well as air conditioners need cooling towers to remove heat from the system to have higher efficiency and, so, several research works have been done to analyze the performance of these systems [1][2][3][4][5][6][7][8][9][10]. Evaporation, which is the dominant reason for dissipation of heat in consecutive cycles in cooling towers, together with organic salts, of which their sources are air and water, create a corrosive and scaling media [11].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and electrochemical performance of a new imidazoline derivative as an environmentally friendly corrosion and scale inhibitor

et al. 2015

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A new imidazoline derivative, {[(benzimidazol-2-ylmethyl)imino] bis(methylene)} bis(phosphonicacid), named as BMIBMBPA, was synthesized as an environmentally friendly corrosion and scale inhibitor. The performance of BMIBMBPA for carbon steel in cooling tower water was evaluated using weight loss, electrochemical measurements and a scale test and compared to that of sodium tungstate. The optimum concentration of BMIBMBPA was measured to be 40 mg/L and a much higher value, even at lower inhibition efficiencies, was determined for sodium tungstate. The electrochemical measurements demonstrated that BMIBMBPA acts as a mixed-type corrosion inhibitor. Surface analyses revealed adsorption of BMIBMBPA and scale inhibition through disruption in growth of precipitates.

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Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and electrochemical performance of a new imidazoline derivative as an environmentally friendly corrosion and scale inhibitor

et al. 2015

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“…The predictions turned out to be agreeable with low statistical errors. Muangnoi et al [7] presented a mathematical model which can calculate the exergy of air and water to analyse the exergy destruction of different parts of a cooling tower. The study revealed that the greatest exergy destruction exists near the air inlet of the tower.…”

Section: Introductionmentioning

confidence: 99%

Experimental research of the guiding channels effect on the thermal performance of wet cooling towers subjected to crosswinds – Air guiding effect on cooling tower

Wang

Sun

Zhao

et al. 2010

Applied Thermal Engineering

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“…(2) The design and optimization of evaporative cooling cycles, including two-stage or three-stage combined direct/ indirect evaporative cooling [9,10] and combined liquid desiccant dehumidification and evaporative cooling [11]. (3) The performance analysis and optimization theory of evaporative cooling systems, with emphasis on exergy analysis [12,13]. In exergy theory, researchers always take exergy efficiency as an assessment index to analyze the exergy loss distribution of all irreversible processes in the system.…”

mentioning

confidence: 99%

“…(3) The performance analysis and optimization theory of evaporative cooling systems, with emphasis on exergy analysis [12,13]. In exergy theory, researchers always take exergy efficiency as an assessment index to analyze the exergy loss distribution of all irreversible processes in the system.…”

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confidence: 99%

Optimization criteria for the performance of heat and mass transfer in indirect evaporative cooling systems

Fang

Chen

2012

Chin. Sci. Bull.

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The wide application of evaporative cooling techniques in which the optimization criteria form the theoretical basis for improving evaporative cooling performance is essential for energy conservation and emission reduction. Based on exergy analysis and the entransy dissipation-based thermal resistance method, this contribution aims to investigate the effects of flow and area distributions in the optimization of the performance of indirect evaporative cooling systems. We first establish the relationships of exergy efficiency, entransy dissipation-based thermal resistance and cooling capacity of a typical indirect cooling system. Using the prescribed inlet parameters, the heat and mass transfer coefficients and the circulating water mass flow rate, we then numerically validate that when the cooling capacity reaches a maximum, the entransy dissipation-based thermal resistance falls to a minimum while the exergy efficiency is not at an extreme value. The result shows that the entransy dissipation-based thermal resistance, not the exergy efficiency, characterizes the heat transfer performance of an evaporative cooling system, which provides a more suitable method for evaluating and analyzing the indirect cooling system. indirect evaporative cooling, optimization criteria, entransy dissipation-based thermal resistance, exergy efficiency Citation: Yuan F, Chen Q. Optimization criteria for the performance of heat and mass transfer in indirect evaporative cooling systems. Chin Sci Bull, 2012, 57: 687693,Evaporative cooling is a technique in which unsaturated moist air is in contact with water, causing liquid water evaporation resulting in low temperature water or wind. Since the ambient air is clean and low cost, evaporative cooling is the focus of wide interest and applications. Many scientists have undertaken a large amount of research on evaporative cooling systems, mainly on the following three aspects: (1) The analysis of the impact factors on the performance of evaporative cooling systems, such as temperature, humidity and the mass flow rate of moist air [1,2], temperature and the mass flow rate of water [3] and direct/ indirect evaporative cooling with different structures, such as plate types [4,5], tubular types [6,7] and heat pipes [8] etc.(2) The design and optimization of evaporative cooling cycles, including two-stage or three-stage combined direct/ indirect evaporative cooling [9,10] and combined liquid desiccant dehumidification and evaporative cooling [11]. (3) The performance analysis and optimization theory of evaporative cooling systems, with emphasis on exergy analysis [12,13]. In exergy theory, researchers always take exergy efficiency as an assessment index to analyze the exergy loss distribution of all irreversible processes in the system. This involves evaluating the performance of evaporative cooling, and seeking effective ways for improving the performance of evaporative cooling using the criterion that maximum exergy efficiency leads to optimal performance. However, the physical essence of exer...

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An exergy analysis on the performance of a counterflow wet cooling tower

Cited by 76 publications

References 9 publications

Synthesis, characterization and electrochemical performance of a new imidazoline derivative as an environmentally friendly corrosion and scale inhibitor

Synthesis, characterization and electrochemical performance of a new imidazoline derivative as an environmentally friendly corrosion and scale inhibitor

Experimental research of the guiding channels effect on the thermal performance of wet cooling towers subjected to crosswinds – Air guiding effect on cooling tower

Optimization criteria for the performance of heat and mass transfer in indirect evaporative cooling systems

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