A sustainable bio-inspired cooling unit for hot arid regions: Integrated evaporative cooling system in wind tower

Abdullah, Amatalraof; Said, I.; Ossen, Dilshan Remaz

doi:10.1016/j.applthermaleng.2019.114201

Cited by 26 publications

(12 citation statements)

References 49 publications

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“…Most works gathered in Table 3 as providing the operating hygrothermal air conditions (DBT and WBT or RH) do not actually control these factors, and simply measure their variation with time [30,38,51,[58][59][60][61]63,64,68,73,[87][88][89][90][91]94]. Indeed, only a few deliberate on their effect on the DEC behavior.…”

Section: Inlet Air Psychrometric Conditionsmentioning

confidence: 99%

“…It is generally accepted that hot, dry conditions are more favorable to the operation of DEC systems [94], while they are put into question for humid climates and for locations where water is scarce [88]. In more humid locations, combination with desiccation [29] or Indirect Evaporative Cooling (IEC) [97] are preferable solutions.…”

Section: Inlet Air Psychrometric Conditionsmentioning

confidence: 99%

“…High air velocities have been repeatedly correlated to lower saturation effectiveness [16,33,40,46,48,53,61,65,69,[74][75][76]94,96], temperature drop [42,75,91] and relative humidity variation [42,53,91], but also to larger pressure drops [15,31,39,41,46,48,96], water consumption [3,15,31,39,40,42,46,75,91], as well as heat and mass transfer coefficients [3,15,61].…”

Section: Air Velocity/flow Ratementioning

confidence: 99%

“…However, tests are conducted only within the range 3-4.51 m s − 1 and they do not analyze the effect on the pressure drop. Abdullah et al [94] recommend the lowest air velocities of about 1 m s − 1 at which they conduct tests on a jute coated ceramic DEC media, but do not optimize this selection on any other basis rather than the maximum saturation effectiveness achievable.…”

Section: Air Velocity/flow Ratementioning

confidence: 99%

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Optimal operation of evaporative cooling pads: A review

Tejero‐González

Franco-Salas

2021

Renewable and Sustainable Energy Reviews

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Direct evaporative cooling is widely known for being an energy efficient air conditioning solution for arid and/or semi-arid climates. Commercialized evaporative cooling pads vary in material and construction characteristics, while existing research proposes several alternative wetted media and configurations. The most studied factors on the evaporative cooling pads operation are the air velocity or air mass flow rate, air psychrometric conditions; the pad thickness, its geometric characteristics and configuration, and the water flow rate supplied. The pads performance is commonly characterized through its saturation effectiveness, pressure drop, temperature drop and humidity increase achieved in the treated air, water evaporation and consumption, cooling capacity, coefficient of performance and the heat and mass transfer coefficients. Present work conducts a critical review on the existing experimental and theoretical research on commercial and alternative wetted media, identifies the gaps in the literature, proposes uniform nomenclature and methodologies, and provides a critical view on the optimal operating conditions from wetted-surface evaporative coolers.

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Section: Inlet Air Psychrometric Conditionsmentioning

confidence: 99%

Section: Inlet Air Psychrometric Conditionsmentioning

confidence: 99%

Section: Air Velocity/flow Ratementioning

confidence: 99%

Section: Air Velocity/flow Ratementioning

confidence: 99%

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Optimal operation of evaporative cooling pads: A review

Tejero‐González

Franco-Salas

2021

Renewable and Sustainable Energy Reviews

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“…The use of locally available vegetable fibers has the advantage of using indigenous resources and thus becomes more sustainable. Examples include coconut fiber (Alam et al, 2017; Jain & Hindoliya, 2011; Liao et al, 1998; Rawangkul et al, 2008; Shekhar et al, 2016), cotton fibers and woven fabric (Liao et al, 1998; Pandelidis et al, 2020; Velasco‐Gómez et al, 2020), eucalyptus fibers (Doğramacı et al, 2019; Doğramacı & Aydın, 2020; Khosravi et al, 2020), jute fibers (Abdullah et al, 2019; Alam et al, 2017;Al‐Sulaiman, 2002; Ndukwu & Manuwa, 2015), Kraft paper (Barzegar et al, 2012; Pandelidis et al, 2020), luffa fibers (Al‐Sulaiman, 2002; De Melo et al, 2019), palash fibers and khus roots (Jain & Hindoliya, 2011, 2014), palm fibers (Al‐Sulaiman, 2002; Ndukwu & Manuwa, 2015), sack cloth (Alam et al, 2017), wood chips (Ahmed et al, 2011; Khosravi et al, 2020), straw (Ahmed et al, 2011), wood charcoal (Korese & Hensel, 2016; Ndukwu & Manuwa, 2015), rice husk (Soponpongpipat & Kositchaimongkol, 2011), and synthetic fibers (Pandelidis et al, 2020).…”

Section: Evaporative Cooling Wetted Mediamentioning

confidence: 99%

Direct evaporative cooling from wetted surfaces: Challenges for a clean air conditioning solution

Tejero‐González

Franco-Salas

2021

WIREs Energy & Environment

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Evaporative cooling has a major role to play in fighting climate change and in achieving a low‐carbon economy. As it helps to reduce energy demand for air conditioning, it is gaining attention in terms of improving energy efficiency in buildings. Evaporative cooling from wetted media can enhance water–air contact, thereby improving heat and mass transfer further and avoiding aerosols. Wetted media are commonly called evaporative cooling pads and are widely used in greenhouses, intensive livestock farming, and industrial facilities. However, a deep understanding of evaporative cooling pad performance can enhance their application to indoor occupied spaces such as residential or commercial cooling, or in hybrid air conditioning systems. Most studies analyze pad performance mainly in terms of pressure drop and saturation effectiveness. However, some studies propose alternative cooling efficiency parameters and others provide insights into key aspects such as power requirements and the coefficient of performance, water consumption, risk of water entrainment, material decay, and air quality, as well as the effect of water temperature and salinity, solar radiation, or wind speed. Existing results on these less studied performance issues are reviewed, and we identify the gaps in the literature in addition to highlighting the main challenges encountered, in an effort to guide future researchers in the field and enhance the application of direct evaporative cooling. This article is categorized under: Energy Efficiency > Systems and Infrastructure Energy Systems Analysis > Systems and Infrastructure

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Re-interpreting and Adapting the Site Specific Vernacular Passive House Architectural Strategies for Reducing Building Energy Demand

Kundu

Bhandari

2020

RILEM Bookseries

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A sustainable bio-inspired cooling unit for hot arid regions: Integrated evaporative cooling system in wind tower

Cited by 26 publications

References 49 publications

Optimal operation of evaporative cooling pads: A review

Optimal operation of evaporative cooling pads: A review

Direct evaporative cooling from wetted surfaces: Challenges for a clean air conditioning solution

Re-interpreting and Adapting the Site Specific Vernacular Passive House Architectural Strategies for Reducing Building Energy Demand

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