Potential energy savings by radiative cooling system for a building in tropical climate

Hanif, Muhammad; Mahlia, T.M.I.; Zare, Ali; Saksahdan, T.J.; Metselaar, Hendrik Simon Cornelis

doi:10.1016/j.rser.2014.01.053

Cited by 103 publications

(30 citation statements)

References 75 publications

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“…Exell Results show effective sky temperatures about below minimum daily temperature, demonstrating the potential of radiative cooling to provide some of the cooling demands. Moreover, Hanif et al (2014)[49] performed an analysis of the radiative cooling potential for Malaysia. They attempted to get a correlation to relate the radiative cooling power and the temperature depression by using climate data from 10 different locations.…”

mentioning

confidence: 99%

Radiative cooling as low-grade energy source: A literature review

Vall

Castell

2017

Renewable and Sustainable Energy Reviews

168

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mentioning

confidence: 99%

Radiative cooling as low-grade energy source: A literature review

Vall

Castell

2017

Renewable and Sustainable Energy Reviews

168

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“…It is applied as a dissipation fluid in systems where heat is released across conventional elements such as fan coils [10][11][12] or radiators [13][14][15], as well as in innovative approaches such as thermally activated building systems (TABS) [16,17]. The need to cool urban heat islands, in conjunction with the planet's present energy dilemma, posit the use of natural techniques to generate low temperature water by capitalizing on soil temperatures [18][19][20], nightly radiant cooling [21][22][23][24][25], and evaporative cooling systems [26][27][28][29].…”

Section: Passive Natural Cooling Techniquesmentioning

confidence: 99%

Evaporative Mist Cooling as Heat Dissipation Technique: Experimental Assessment and Modelling

et al. 2020

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The severity of extreme weather conditions brought on by climate change are conditioning quality of life, economic development, and well-being in today’s cities. Conventional measures have been shown to be insufficient for tackling climate change and must be supplemented with ecofriendly approaches. Hence, the scientific community’s endeavor to develop natural cooling techniques that lower energy consumption while delivering satisfactory comfort levels. For its simplicity and low cost, evaporative cooling has gained in popularity in recent years. The substantial cooling power to be drawn from evaporative mist cooling, makes it an attractive alternative to conventional systems. Research conducted to date on the technique has focused on producing cold air, whilst cooling the water involved has been neither assessed nor experimentally validated. No readily applicable simplified model for the system able to use operating parameters as input variables has been defined either. The present study consequently aimed to experimentally assess the cooling power of the evaporation of sprayed water and experimentally validate a simplified model to assess and design such systems. The findings confirmed the cooling power of the technique, with declines in water temperature of up to 6 °C, and with it the promise afforded by this natural air conditioning method. Finally, simplified model developed allows to evaluate this technique like a conventional system for producing fresh water.

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“…Heat balance of the lower surface of the shield. Heat balance of the lower surface of the shield is given by (4). Thermal inertia of the shield is omitted because of the low heat capacity of shield material.…”

Section: Shielded Poolmentioning

confidence: 99%

Deferred Cooling System for Desert Climates

Bedaiwy

Morsi

Serag-Eldin

2020

Advances in Mechanical Engineering

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The paper presents the design of a novel heat rejection system suitable for desert climates where daytime temperatures are typically high, nighttime cooling through sky radiation exchange is highly effective, and freshwater is scarce. Desert climates also feature high solar energy intensities during daytime, which can be exploited to power thermodynamic cycles. However, such cycles reject heat during operation, and daytime temperatures are too high for employing air cooling whereas scarcity of freshwater limits the applicability of evaporative cooling. We propose a system that defers dissipation of heat rejected during daytime operation to nighttime when ambient conditions are much more favorable for heat dissipation to the atmosphere. The paper presents the proposed design, its method of operation, and its implementation in a solar-driven ice-making plant in Upper Egypt. A mathematical model was developed to predict system performance and support decision-making over equipment sizing. It was used to simulate the performance of the deferred cooling system over a week. Using weather data collected at New Cairo (30.02 8N latitude, 31.5 8E longitude) in April 2017, the model demonstrated that the system could achieve a maximum temperature drop of 16°C, which corresponds to a cooling of 47 MJ/m 2 /night.

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Potential energy savings by radiative cooling system for a building in tropical climate

Cited by 103 publications

References 75 publications

Radiative cooling as low-grade energy source: A literature review

Radiative cooling as low-grade energy source: A literature review

Evaporative Mist Cooling as Heat Dissipation Technique: Experimental Assessment and Modelling

Deferred Cooling System for Desert Climates

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