A feedback model to predict parameters for controlling the performance of a mechanical draft cooling tower

Singh, Kanwaljit; Das, Ranjan

doi:10.1016/j.applthermaleng.2016.03.030

Cited by 39 publications

(7 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results show that the operating parameters have a significant influence on the performance of the cooling tower except for the air dry bulb temperature. Singh et al 28 proposed a feedback model to control the performance of mechanically ventilated cooling towers under different heat loads. The results show that the proposed inverse feedback model is a tool to optimize the performance of control tower under different conditions.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of a mechanical ventilation heat supply tower

Guo

Zhou

Zhang

et al. 2022

Env Prog and Sustain Energy

View full text Add to dashboard Cite

This study put forward a scheme of heating the groundwater by using the heat supply tower (HST) when the temperature of the groundwater drops yearly. Fluent was used to conduct a 3‐D numerical simulation of heat and mass transfer between air and water in the tower. Taking the Shenyang area as an example, the influence of different air parameters was analyzed. When air velocity was 2.0 m/s and water flow velocity was 1.0 m/s, the heat supply performance was the best. When outdoor dry bulb temperature was 34°C, the contact heat transfer increased underground water temperature by 1.4°C. When wet bulb temperature of air was 23.7°C and the dew point temperature of water vapor was 20.0°C, the condensation heat transfer increased underground water temperature by 2.0 4.0°C. The total temperature rise of water in HST was 3.0 ~ 5.0°C when it was in contact with air, which can effectively alleviate the problem of groundwater temperature decrease. In this study, the static analysis method was used to analyze the economy of the tower and solar energy heat supplement. The conclusion was that the heating cost of the heating tower is lower.

show abstract

Section: Introductionmentioning

confidence: 99%

Numerical simulation of a mechanical ventilation heat supply tower

Guo

Zhou

Zhang

et al. 2022

Env Prog and Sustain Energy

View full text Add to dashboard Cite

show abstract

“…However, this study fails to discuss the impact on the crosswind angles of 90 • and 135 • under the anti-clockwise direction of normal of air inlet. Singh et al [7][8][9][10] experimentally investigated trickle, film, splash, and wire mesh fill impact on water evaporation, heat rejection, and Merkel number. They demonstrated that the Merkel number is directly influenced by the air-water ratio, and the wire mesh is the best fill pattern in lab conditions; then, an optimization model was proposed to improve thermal performance of the tower.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study on the Cooling Characteristics of Different Fill Layout Patterns on a Single Air Inlet Induced Draft Cooling Tower

Deng

Sun

2021

Energies

View full text Add to dashboard Cite

To enhance the cooling capacity of a single air inlet induced draft cooling tower (SIDCT), the stepped fill layout pattern is proposed in this paper. A three-dimensional numerical model is established and validated by field measurement data. The cooling capacity of towers equipped with uniform fill and stepped fill is compared under various crosswind velocities (0 m/s–12 m/s) and crosswind angles (0°–180°). The results showed that the ventilation rate of the total tower with stepped fill is increased. Under the studied crosswind velocity and angle, the cooling capacity of the stepped fill tower is superior to the uniform fill tower. After using stepped fill, the mean drop of outlet water temperature rises by 0.29 °C, 0.27 °C, 0.17 °C, 0.10 °C, and 0.19 °C, corresponding to crosswind angles from 0° to 180°. The increment of cooling capacity is the maximum under the crosswind angles of 0° and 45° and is the minimum under the crosswind angles of 90° and 135°. The maximum increased value of N is 0.65 under the crosswind velocity of 4 m/s, 0.85 under 8 m/s, and 0.95 under 12 m/s.

show abstract

“…Singh and Das investigated experimentally the thermal performance of a mechanical draft forced cooling tower by introducing trickle, film, and splash fills. They formulated am optimization technique to optimize the performance parameter for each fill simultaneously and found that wire mesh fills are most efficient in that experimental condition.…”

Section: Introductionmentioning

confidence: 99%

Experimental and thermal analysis of energy efficient novel design wet cooling towers

Raj

Prakash

Pathak

2019

Heat Trans. Asian Res.

View full text Add to dashboard Cite

Waste heat is generally dissipated from process water to atmospheric air in cooling towers. In the present study, a novel design is used to extract more amount of heat without any additional energy input by incorporating secondary ambient air in an induced draft wet cooling tower. In addition, more fresh air is induced in the tower from the rain zone, which increases the effectiveness at any value of the water to air flow rate (L/G ratio). Moreover, tower characteristics, range, and evaporation loss were also increased due to the novel design. It is noteworthy that secondary fresh air increases effectiveness, heat rejection, and tower characteristics by 10.12%, 19.65%, and 26.11%, respectively, and decreases approach by 16.32% at 0.55 L/G ratio, 44°C inlet water temperature, 29.7°C dry bulb temperature, and 18.4°C inlet air wet bulb temperature.

show abstract

A feedback model to predict parameters for controlling the performance of a mechanical draft cooling tower

Cited by 39 publications

References 17 publications

Numerical simulation of a mechanical ventilation heat supply tower

Numerical simulation of a mechanical ventilation heat supply tower

Comparative Study on the Cooling Characteristics of Different Fill Layout Patterns on a Single Air Inlet Induced Draft Cooling Tower

Experimental and thermal analysis of energy efficient novel design wet cooling towers

Contact Info

Product

Resources

About