Experimental study on the direct evaporative air-cooling system with vermicompost material as the water storage medium

Abaranji, Sujatha; Panchabikesan, Karthik; Velraj, R.

doi:10.1016/j.scs.2021.102991

Cited by 18 publications

(4 citation statements)

References 19 publications

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“…The water consumption rate, which is a function of the air's specific humidity and the air's mass flow rate, was calculated with Equation (4) [38,39].…”

Section: Performance Parametermentioning

confidence: 99%

Determination of Performance of Different Pad Materials and Energy Consumption Values of Direct Evaporative Cooler

Jakubowski,

Boyacı,

Kocięcka

et al. 2024

Energies

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The purpose of this study is to determine the performances of luffa and greenhouse shading netting (which can be used as alternatives to commercial cellulose pads, that are popular for cooling greenhouses), the contribution of external shading to the evaporative cooling performance, and the energy consumption of the direct evaporative cooler. In this experiment, eight different applications were evaluated: natural ventilation (NV), natural ventilation combined with external shading net (NV + ESN), cellulose pad (CP), cellulose pad combined with external shading net (CP + ESN), luffa pad (LP), luffa pad combined with external shading net (LP + ESN), shading net pad (SNP), and shading net pad combined with external shading net (SNP + ESN). The cooling efficiencies of CP, CP + ESN, LP, LP + ESN, SNP, and SNP + ESN were found to be 37.6%, 45.0%, 38.9%, 41.2%, 24.4%, 29.1%, respectively. Moreover, their cooling capacities were 2.6 kW, 3.0 kW, 2.8 kW, 3.0 kW, 1.7 kW, 2.0 kW, respectively. The system water consumption values were 2.9, 3.1, 2.8, 3.2, 2.4, 2.4 l h−1, respectively. The performance coefficients of the system were determined to be 10.2, 12.1, 11.3, 11.9, 6.6, 7.8. The system’s electricity consumption per unit area was 0.15 kWh m−2. As a result of the study, it was determined that commercially used cellulose pads have advantages over luffa and shading net materials. However, luffa pads can be a good alternative to cellulose pads, considering their local availability, initial cost, cooling efficiency, and capacity.

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“…The water consumption rate, which is a function of the air's specific humidity and the air's mass flow rate, was calculated with Equation (4) [38,39].…”

Section: Performance Parametermentioning

confidence: 99%

Determination of Performance of Different Pad Materials and Energy Consumption Values of Direct Evaporative Cooler

Jakubowski,

Boyacı,

Kocięcka

et al. 2024

Energies

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“…In case of performance analysis, one of the important parameter is the sensible cooling capacity [ 35 ] and is given by

…”

Section: Experimental Procedures and Theoretical Analysismentioning

confidence: 99%

Experimental investigation of air cooler using local palm tree waste

Almaneea

Alshammari

Aldhafeeri

et al. 2022

Heliyon

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“…According to a recent study [18], under the conventional head pressure control, using pre-cooling water mist, the coefficient of performance (COP) of a chiller increased by up to 9.8% and the annual energy consumption of a hotel chiller system dropped by approximately 18%. In another study, the presented energy saving of a direct evaporative cooling system was 21.7% [19]. The dew point of an evaporative cooling system's efficiency is higher than typical cooling system's by 60-65% and, if implemented at 100% rate, it could eliminate about 18-30% of CO 2 emissions attributed to the cooling industry [20].…”

Section: Introductionmentioning

confidence: 96%

Feasibility of Reducing Electricity Consumption of Air Conditioning Equipment by Condenser Direct Evaporative Cooling Technology. Example of Case Study in Dubai

et al. 2021

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The use of air conditioning technology is accompanied by an increase in electricity consumption, which is linked to an intensification of fossil fuel extraction. This in turn calls for developing cooling solutions of higher energy efficiency. The aim of this study is to examine energy consumption reduction of direct evaporative cooling technology for generating cool air in hot-dry climate regions. At the initial stage, already-installed air cooling equipment with a direct evaporative cooling system was studied for the creation of two regression models of electricity consumption representing the “on” and “off” sequences. Water consumption for system operation was taken into consideration. In the following stage, inlet water temperature dependence for pre-cooling purposes for the direct evaporative cooling system was studied. A mathematical model was developed and the subsequent calculations suggested that there is no need to pre-cool water before it enters the system and therefore consume additional energy. Practical application of this study is evaluated based on the case study in Dubai. The results of this study present significant energy saving potential for system operations of the direct evaporative cooling system of approximately 122 MWh per year. The return on investment for the equipment with direct evaporative cooling in case of an office building in Dubai featuring a hot desert climate is around 4.2 years. The purpose of this study is to examine the potential advantage of air cooling equipment with direct evaporative cooling technology compared to cooling equipment without this technology. The results provide the expediency of conducting further research in this area, in particular with regards to analyzing various materials for the adiabatic precooling pads, as well as the possibility of using a newly developed metal precooling pad.

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Experimental study on the direct evaporative air-cooling system with vermicompost material as the water storage medium

Cited by 18 publications

References 19 publications

Determination of Performance of Different Pad Materials and Energy Consumption Values of Direct Evaporative Cooler

Determination of Performance of Different Pad Materials and Energy Consumption Values of Direct Evaporative Cooler

Experimental investigation of air cooler using local palm tree waste

Feasibility of Reducing Electricity Consumption of Air Conditioning Equipment by Condenser Direct Evaporative Cooling Technology. Example of Case Study in Dubai

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