4e (Energy, Exergy, Economic and Environmental) Analysis of the Novel Design of Wet Cooling Tower

Kumar, Dileep; Zehra, Tayaba; Junejo, Awais; Bhanbhro, Sajid Ali; Basit, Muhammad

doi:10.18186/thermal.710981

Cited by 3 publications

(2 citation statements)

References 38 publications

(52 reference statements)

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“…The direction of movement of air in the cooling tower system is used to characterize it as either counter-flow or cross-flow. In cross-flow cooling towers, ambient air entering the system travels horizontally through the fills as the hot water moves downwards while for the counter flow, ambient air travels in opposite direction to the hot water movement [7,8]. Figure 1 shows a classification of cooling towers based on draft, airflow, construction, shape, and heat transfer.…”

Section: Introductionmentioning

confidence: 99%

Parametric Effects on the Performance of an Industrial Cooling Tower

Bamimore

Enibe

Adedeji

2021

Journal of Thermal Engineering

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Sensible and latent heat rejection from heat engines is of high necessity for system efficiency and continuous production. The cooling tower is one of the major heat-exchanging systems used for cooling industrial heat systems by intimately mixing hot water with cooling air. Optimal operating conditions and parameters of the system are highly essential for its effectiveness and efficiency. This study used the Poppe model to evaluate selected thermodynamic relations of a rectangular counter-flow industrial cooling tower of a steel rolling mill using the system's inlet and outlet data as initial conditions. The effect of increasing the water temperature on the air moisture content, Merkel number, and specific enthalpy was studied across the fills of the cooling tower. Air moisture content, Merkel number and specific enthalpy of the system increase with increasing water temperature. However, while other variables reach a stationary point at half the nodal segments, the specific enthalpy increases across the fills in the system. It was concluded that the use of nano particles with high heat removal rate could increase the efficiency of the system. Also, an increase in the quantity of the makeup water of a force draft system is recommended towards increasing the system efficiency.

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Section: Introductionmentioning

confidence: 99%

Parametric Effects on the Performance of an Industrial Cooling Tower

Bamimore

Enibe

Adedeji

2021

Journal of Thermal Engineering

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“…developed numerical simulation plan for a mathematical correlation for wind-assisted evaporator and experiments were carried out at various working conditions. The Numerical simulation acted as feasible prognostic instrument for design and rating of the wind-assisted evaporator [10,12]. It is concluded from the literature review that the researchers have carried out energy evaluation of cross current and counter current cooling tower and exergy evaluation of only counter current cooling tower on the basis of fluid properties at the exit [13].…”

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confidence: 99%

Exergy Analysis Ofthe Cross Current Cooling Tower

Rawabawale¹

2020

Journal of Thermal Engineering

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The cold water needs to be circulated through the steam condenser of a thermal power plant in order to carry out the waste latent heat of condensation from steam. The hot water leaving condenser needs to be cooled in order to re-circulate it through condenser. Hence the hot water is passed through a cooling tower to reject waste heat to the ambient air through convection and mass transfer. The augmented cost of energy and scarceness of water has made researchers to focus on performance investigation of cooling tower as energy conservation opportunity. The thermal efficiency is generally used to measure performance of cooling tower which is evaluated from properties of the fluids. However this method is inefficient to investigate the major causes of irreversibility inside the cooling tower. Therefore, an exergy investigation is initiated to synchronize with the energy investigation of a cooling tower. This research paper includes the investigation of the thermal performance of a cross current cooling tower through energy balance, mass balance and exergy correlations. The variation of fluid properties with flow direction of fluids and exergy loss within the cooling tower are examined and authenticated through test results. The outcomes of study have shown that the analytical exergy loss is lower than the experimental exergy loss and the exergy loss varies with length and height of the cross current cooling tower. Further the influence of variation in size of cooling tower on exergy loss is evaluated analytically and found that the increase in length of cooling tower than the height reduces exergy loss by 8.18% improving thermal efficiency of cooling tower by 3.57%.

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Performance analysis and efficiency enhancement of cooling tower in 210 MW thermal unit

Solomon

Balaji

Ilayaperumal³

et al. 2021

J. Phys.: Conf. Ser.

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Heat exchangers, condensers plays a vital role in any kind of power cycle like modified Rankin cycle, these components involves transfer of both sensible and latent heat and have great influence over the power plant performance. The condenser employed in MTPS involves transfer of latent heat into steam. Yet it as to induce a phase change in thereby forming water. Increase in the effectiveness of condenser resulted in the increase of vacuum in the condenser. Thereby work done by steam is increased and coal saving (per ton of steam production) is achieved. This condensation process results in the formation of sludge’s (temporary) and (permanent). Along the inner periphery of the condenser tubes. These permanent scales have decreased thermal conductivity and inhibit the heat transfer rate. The more the thickness of the scale the less the heat is removed from the steam. This scale formation limits the life of the condenser tubes with maximum performance. In this project the thickness of the scale formed in the condenser tubes is calculated theoretically and the performance is analysed before and after scale formation in the condenser. Different materials which involve less scale formation, different ways of reducing scales and various scale removing methods are suggested.

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4e (Energy, Exergy, Economic and Environmental) Analysis of the Novel Design of Wet Cooling Tower

Cited by 3 publications

References 38 publications

Parametric Effects on the Performance of an Industrial Cooling Tower

Parametric Effects on the Performance of an Industrial Cooling Tower

Exergy Analysis Ofthe Cross Current Cooling Tower

Performance analysis and efficiency enhancement of cooling tower in 210 MW thermal unit

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