A Review of Evaporative Cooling Technologies

Amer, Omar; Boukhanouf, Rabah; Ibrahim, Hatem

doi:10.7763/ijesd.2015.v6.571

Cited by 137 publications

(70 citation statements)

References 42 publications

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“…active solar thermal cooling -open system) could be an attractive potential option for Brisbane and Sydney [15,23]. 4. For Darwin, the majority of hours would require dehumidification (e.g.…”

Section: The Potential Use Of Direct Evaporative Cooling In Australiamentioning

confidence: 99%

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Evaluating the potential use of direct evaporative cooling in Australia

Guan

Bennett

Bell

2015

Energy and Buildings

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Section: The Potential Use Of Direct Evaporative Cooling In Australiamentioning

confidence: 99%

“…Broadly, evaporative cooling can be divided into two groups of direct and indirect evaporative cooling (DEC and IEC) [4], which can be used either individually or as part of a more complex setup (i.e. hybrid air cooling systems) as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Evaluating the potential use of direct evaporative cooling in Australia

Guan

Bennett

Bell

2015

Energy and Buildings

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“…Evaporative cooling is efficient in maintaining temperature and RH at optimum levels for storage of FV. Evaporative cooling has a potential energy saving of about 75%; the structure can easily be constructed using available materials and comes at an appropriate scale in operation and economics [8,9]. Evaporative cooling relies on velocity of natural wind through wetted pads to provide a cooling effect for preservation of organoleptic properties of food [10].…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of an indirect air cooling system combined with evaporative cooling

Sibanda

Workneh

2020

Heliyon

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This study developed an indirect air-cooling combined with evaporative cooling (IAC þ EC) system for temporary storage of fruit and vegetables (FV) to improve the shelf life of fresh produce under hot and humid climatic conditions. The aim of the study was to investigate the effect of IAC þ EC in providing optimum storage environment of temperature and relative humidity (RH) for the tomato fruit compared to storage under ambient conditions. The IAC þ EC system had a 53-m 3 storage chamber able to store 3.8 tons of tomatoes. Solar energy during the day and a battery bank facility at night powered the cooling system. The structure was constructed and assembled at Ukulinga research center in Pietermaritzburg. The performance of the IAC þ EC was evaluated based on the temperature and the RH measured hourly from 05h00-22h00 daily during a period of 28 days. Temperature and RH were measured in the psychometric unit, various positions in the storage chamber and at ambient conditions. There were significant variations (P < 0.001) in temperature and RH between storage and ambient conditions. The temperature inside the storage chamber was on average 7 C-16 C lower while the average RH was 13%-41% higher than ambient conditions. Temperature and RH at the exhaust end of the IAC þ EC storage chamber were 16.40 C and 88.9% compared to 30.9 C and 47.6% under ambient conditions. Such conditions can enhance the shelf life of FV of moderate respiration rates. Inside the storage chamber, temperature was 15.7 C-16.4 C while the RH was 89.6%-93.8% depending on location. The cooler efficiency varied from 88.04% to 95.6%. The IAC þ EC system performed at the same level as evaporative cooling under dry and arid conditions. The results in this study are evidence that IAC þ EC system can provide optimum storage conditions for FV as well as being a low-cost technology utilizable in hot and sub-humid to humid areas in sub-Saharan Africa.

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“…A dessert cooler is a device that cools air through the evaporation of water [1]. The temperature of dry air can be dropped significantly through the phase transition of liquid water to water vapour (evaporation), which can cool air using much less energy than refrigeration.…”

Section: Introductionmentioning

confidence: 99%

“…In the process, the moisture content of air increases, while its temperature decreases [1,2]. The resulting cold but moist air is used for providing cooling.…”

Section: Introductionmentioning

confidence: 99%