Performance characterization and optimization of counter-flow dew point indirect evaporative cooler through response surface methodology

Kousar, Rubeena; Ali, Muzaffar; Amjad, Muhammad Kamal; Sheikh, Nadeem Ahmed; Ahmad, Waqas

doi:10.1177/09576509211007976

Cited by 4 publications

(2 citation statements)

References 20 publications

(24 reference statements)

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“…The RSM is a powerful statistical technique mainly used for experimental design, mathematical modeling, and optimal prediction (Kousar et al, 2021). The main advantages of RSM optimization involve statistically designed experiments, statistical analysis, optimization, response profile analysis, and generating an empirical and mathematical model in one step.…”

Section: Rsm Modelmentioning

confidence: 99%

Modeling and optimization of integrated earth air heat exchanger and direct evaporative cooling system using ANN and RSM approaches for preserving fruits and vegetables

Nishad,

Mangaraj

2023

J Food Process Engineering

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Conventional air‐conditioned storage systems are more energy intensive which requires a consistent supply of electricity. Apart from this, it is costly and not suitable in remote areas where electricity is almost inaccessible. Therefore, the present study aimed to test the performance and feasibility of an integrated earth air heat exchanger and direct evaporative cooling system for storage of fruits and vegetables. The effects of air velocity (4–6 m/s), water flow rate (0.032–0.096 kg/s), and thickness of the cooling pad (50–150 mm) with corresponding responses were investigated in order to develop response surface methodology (RSM) and artificial neural network (ANN) models and compared them to predict temperature drop and humidity rise. Using RSM model, the optimum values for maximum temperature drop (16.80°C) and humidity rise (70.85%) within a range of input variables were found to be 4 m/s air velocity, 0.065 kg/s water flow rate, and 150 mm thickness of the cooling pad. For predicting the temperature drop and humidity rise, the higher (0.992 and 0.998) lower MAE (0.045 and 0.064), RMSE (0.187 and 0.266), and values (0.028 and 0.001) were observed in the ANN model. The developed ANN model was better than RSM models, and the model prediction was in good agreement with experiment values within the range of ±5% uncertainty. The results of this study indicate that the proposed cooling system can be successfully applied to store horticultural commodities.Practical ApplicationIntroduced hybrid cooling technique is low‐cost and eco‐friendly, and can be commercially used for on‐farm storage of fruits and vegetables to enhance their shelf life. The system is helpful for smallholder farmers/retailers to maintain the quality of the commodity during storage, minimize post‐harvest losses, and fetch good market value for the commodity.

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Section: Rsm Modelmentioning

confidence: 99%

Modeling and optimization of integrated earth air heat exchanger and direct evaporative cooling system using ANN and RSM approaches for preserving fruits and vegetables

Nishad,

Mangaraj

2023

J Food Process Engineering

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“…The analysis of hourly-measured temperature data in Latvia highlights the increasing summer temperatures and the consequent higher demand for cooling, as previously discussed. In addressing these challenges, the findings from study (Kousar et al (2021) offer valuable insights on optimizing the operation of evaporative cooling systems, such as cooling pads, in mitigating indoor overheating during heatwaves. The study highlights the importance of factors like air face velocity, pad thickness, and pad type (material and configuration), that can effectively increase the performance of the cooling pad.…”

Section: Figurementioning

confidence: 99%

Examining the efficacy of cooling pad technology to address increasing building cooling demand in Latvia

Prozuments,

Borodinecs,

Lebedeva

et al. 2023

Front. Built Environ.

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Over the past decades there has been a strong evidence of a temperature rise across the world that has led to a growing concern of more extreme weather patterns and regular seasonal heat waves globally. As such, building occupants are at a continuously growing risk to overheating exposure inside the premises throughout the warm season of the year. This study investigates the utilization of cooling pad technology as a potential solution to enhance cooling efficiency. Compared to traditional cooling methods, the implementation of cooling pads leads to significant reductions in temperature and enhanced humidity control, while consuming relatively lower amounts of energy. The study contains a comprehensive analysis of the climatic conditions in Latvia, focusing on temperature and humidity variations throughout the year over the last decade in three cities–Riga, Daugavpils and Liepaja, that extensively represent the scope of climatic variations across Latvia, featuring coastal and continental climate patterns. This study aims to evaluate the effectiveness and suitability of cooling pad technology in Nordic climate, focusing on three Latvian cities. The novelty of the study lies in its analysis of cooling pad technology’s effectiveness in Nordic climatic conditions in addressing the increasing cooling demand. The paper examines the fundamental principles behind cooling pad technology, its impact on chiller performance, and its ability to optimize the cooling process. The utilization of cooling pad technology as an effective means to enhance cooling efficiency across the building stock to improve occupant comfort level and IEQ is highlighted. The results demonstrate 5.47% COP increase during average summer temperature conditions, and 17.78% COP increase in peak summer temperature conditions after implementation of cooling pads. This study contributes to the existing knowledge on cooling technologies, offering practical recommendations for the implementation of cooling pad systems use in Latvia and across the wider Nordic region, which is experiencing the gradual rise in summer temperature and humidity level.

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Cooling performance and optimization of a tubular indirect evaporative cooler based on response surface methodology

Sun

Tang

Yang

et al. 2023

Energy and Buildings

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Performance characterization and optimization of counter-flow dew point indirect evaporative cooler through response surface methodology

Cited by 4 publications

References 20 publications

Modeling and optimization of integrated earth air heat exchanger and direct evaporative cooling system using ANN and RSM approaches for preserving fruits and vegetables

Modeling and optimization of integrated earth air heat exchanger and direct evaporative cooling system using ANN and RSM approaches for preserving fruits and vegetables

Examining the efficacy of cooling pad technology to address increasing building cooling demand in Latvia

Cooling performance and optimization of a tubular indirect evaporative cooler based on response surface methodology

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