Analysis of the influence of outdoor surface heat flux on the inlet water and the exhaust air temperature of the wetting pad of a direct evaporative cooling system

Ndukwu, Macmanus Chinenye; Mathew, Ibeh; Godwin, Akpan; Elijah, Ugwu; Akuwueke, Leonard; Oriaku, Linus; Ihediwa, Victor E.; Abam, Fidelis I.; Wu, Hongwei; Kalu, C.A.; Ben, Augustine Edet; Mbanasor, JA

doi:10.1016/j.applthermaleng.2023.120292

Cited by 11 publications

(3 citation statements)

References 38 publications

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“…The analyzed climate data show that throughout the summer months favourable conditions develop in the three examined cities in Latvia to employ evaporative cooling, as this technology is generally more efficient in conditions when the temperature is above 25 °C, and RH levels between 40%-70%. RH levels below 70% are generally considered suitable for evaporative cooling-the lower the humidity, the better the cooling effect (Laknizi et al, 2019;Ndukwu et al, 2023;Rahman et al, 2023).…”

Section: Hourly-measured Temperature Analysis In the Context Of Heat-...mentioning

confidence: 99%

“…This is particularly important in the context of rising electricity prices, as cooling pads allows for cost savings while ensuring comfortable indoor conditions. Additionally, cooling pads have the potential to enhance sustainability by reducing carbon emissions associated with high-energy cooling systems (Laknizi et al, 2019;Tejero-González and Franco-Salas, 2021a;Kapilan et al, 2023;Ndukwu et al, 2023). Furthermore, cooling pad technology offer flexibility in their application, making them suitable for various climate conditions and settings such as residential, commercial and industrial building stock (Franco et al, 2014;Obando et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Hourly-measured Temperature Analysis In the Context Of Heat-...mentioning

confidence: 99%

Section: Introductionmentioning

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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“…The WB efficiency (ε wb ) is defined as the ratio of the actual humidity ratio variation of the process air to the theoretical maximum humidity ratio as given [52,53]:…”

Section: Evaluation Indicesmentioning

confidence: 99%

A Comprehensive Review of the Applications of Hybrid Evaporative Cooling and Solar Energy Source Systems

Xue,

Wan,

Huang

et al. 2023

Sustainability

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Recent advancements in single-stage evaporative cooling (EC) have showcased their effectiveness as an energy-efficient and sustainable air-conditioning (AC) solution. However, several challenges hinder the widespread adoption of EC in various applications. These challenges include climate sensitivity, substantial spatial requirements, and limitations in achieving desired output temperatures. To address these concerns, there has been a growing focus on integrating EC with solar energy (SE) systems. With traditional energy resources being depleted, the use of SE has gained prominence as a sustainable solution to meet future energy demands while mitigating environmental pollution. This paper presents a comprehensive review of hybrid EC–SE systems, aiming to elucidate the potential synergies, benefits, and challenges associated with this integration. The review explores the principles and mathematical approaches of various configurations of EC systems to assess their compatibility with SE sources. Furthermore, the review delves into the mathematical model of SE, encompassing both solar power generation and thermal collectors, with the aim of integrating it into the EC model. It delves into key aspects of energy consumption and performance, showcasing advancements in achieving higher efficiency and enhanced cooling capacity through the hybrid systems. Additionally, the review highlights research gaps in the existing literature, emphasizing the need for further exploration in this interdisciplinary field. In conclusion, this paper offers valuable insights into the potential of EC–SE systems to address energy and cooling requirements while promoting sustainable development.

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Fundamentals of chilling/cooling processes

Ndukwu,

Onwuka,

Bennamoun

et al. 2024

Low-Temperature Processing of Food Products

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Analysis of the influence of outdoor surface heat flux on the inlet water and the exhaust air temperature of the wetting pad of a direct evaporative cooling system

Cited by 11 publications

References 38 publications

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

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

A Comprehensive Review of the Applications of Hybrid Evaporative Cooling and Solar Energy Source Systems

Fundamentals of chilling/cooling processes

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