Performance Assessment of a Counter Flow Cooling Tower – Unique Approach

Naik, B. Kiran; Choudhary, Vishwjeet; Muthukumar, P.; Somayaji, Chandramohan

doi:10.1016/j.egypro.2017.03.056

Cited by 26 publications

(4 citation statements)

References 6 publications

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“…However, the Poppe's method was adopted which rigorously addressed the transport phenomena in the tower packing [11,37]. One of the advantages of the Poppe's method is its efficiency in predicting heat transfer rate [26,38] as it is a more rigorous approach of the Merkel and e-NTU method [39]. Even though the Poppe's method does not have most of the simplifying assumptions associated with the Merkel method, it does not consider the liquid film heat transfer resistance [40].…”

Section: Model Descriptionmentioning

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: Model Descriptionmentioning

confidence: 99%

Parametric Effects on the Performance of an Industrial Cooling Tower

Bamimore

Enibe

Adedeji

2021

Journal of Thermal Engineering

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“…The performance/efficiency of the cooling tower at new condition can reach 100%. However, operational and environmental condition may trigger acceleration of unanticipated degradation on particular material and component [6][7].Therefore, understanding and identification of actual condition of the structure, system, and components are essential for developing corrective action and maintaining safety level in reactor operation [8][9]]. To obtain normal function and performance of heat removal of cooling tower, replacement of sub-component should be conducted in line with aging management and periodic maintenance/refurbishment [10].…”

Section: Introductionmentioning

confidence: 99%

Heat balance analysis of RSG-GAS coolant system due to cooling tower refurbishment

Sudarmono

Sutrisno

Bakhry

et al. 2022

J. Phys.: Conf. Ser.

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The RSG-GAS reactor is designed to operate at a power level of 30MW, as stated in the Safety Analysis Report, and currently RSG GAS has been operating for 34 years. Aging of components has been anticipated to ensure the reactor operates safely. Some parts of the structure, system and components (SSC) will experience degradation/aging and must be replaced. Cooling tower is one of them, where the sub components are maintained and tested regularly. Cooling tower aging indication are known from the decreased performance of the reactor cooling system. For this reason, it is necessary to evaluate, both in terms of measurement and calculation analysis, before and after the refurbishment. The efficiency of the cooling tower has been calculated based on the measurement results of the cooling temperature, at the RSG-GAS operation at a power level of 30 MW. From the measurement results, it can be seen that there is a difference in air velocity inlet and outlet of module 1 and module 2. As well as the working temperature of the blower is uneven, the blower temperature ranges from 60.5°C-91.9°C. So that the operation of the RSG GAS could not last long. The efficiency of the cooling tower during the day ranges from 54.72% to 73.23%. The effect of decreasing cooling tower capability can be seen from the calculation results on the performance of each module individually. while its effect on the overall performance is known from the increase in the temperature of the coolant entering the reactor from the HE. The results of the cooling temperature measurement, after refurbishment, show that the cooling tower performance has been able to dissipate heat according to the initial design.

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“…Al-Waked 11 studied heat and mass transfer in a cooling tower using a three-dimensional numerical model and analyzed the influence of different working conditions on its thermal performance. Naik et al 12 established a coupled finite difference model for heat and mass transfer in a mechanical draft cooling tower. Facao et al 13 established a computational fluid dynamics model to analyze heat and mass transfer in a cooling tower.…”

Section: Introductionmentioning

confidence: 99%

Evaluating vaporization heat, thermal performance, and efficiency of a natural draft wet cooling tower

Song

2022

Proceedings of the Institution of Mechanical Engineers, Part A:

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This study aimed to improve the accuracy of the thermal performance analysis of a natural draft wet cooling tower (NDWCT) and explore the effect factors of the decrease water and energy consumption. In this study, we determined the thermal performance and water loss of the NDWCT under dynamic conditions using mass-balance equations, and obtained water loss from 10.4 kg s−1 to 16.9 kg s−1. The analyzed vaporization heat accounted for 71.5%–86.9% of the total heat flow. Furthermore, the total amount of water discharged exceeded the average standard is 33.06 m3 has been spotted for the first time. Increasing the air-water ratio from 0.38 to 0.77, the cooling efficiency is increased by 44%. The change relationship between water temperature drop, water loss, air enthalpy, and air flow in the tower were discovered and established. The thermal performance analysis model based on water loss and air flow was used, compared with the total heat of the measured data, the maximum deviations were by 4.5% and 1.88%, respectively. The validity of the model was fully verified. These two models were combined with the heat balance equation analysis model based on three variables, which can provide support for optimal operation conditions that the energy savings and water reductions in NDWCTs, and providing convenience and a new reference for thermal performance evaluation, design, and research. Finally, we also proposed the suggestion for improving low efficiency of cooling tower is the most economical operation mode.

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Performance Assessment of a Counter Flow Cooling Tower – Unique Approach

Cited by 26 publications

References 6 publications

Parametric Effects on the Performance of an Industrial Cooling Tower

Parametric Effects on the Performance of an Industrial Cooling Tower

Heat balance analysis of RSG-GAS coolant system due to cooling tower refurbishment

Evaluating vaporization heat, thermal performance, and efficiency of a natural draft wet cooling tower

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