Theoretical performance analysis of jute fiber rope bank as media in evaporative coolers

Kulkarni, R. K.; Rajput, S. P. S.; Azad, Maulana

doi:10.17485/ijst/2010/v3i10.5

Cited by 13 publications

(8 citation statements)

References 8 publications

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“…Increasing the pressure drop is equivalent to incrementing the electrical power required by the exhaust fans of the facility, leading to high operating costs. Research studies have reported values between 9 Pa [27] and 365.5 Pa [21], higher than the reported values for the cellulose pad (<40 Pa) [36,44]. For cooling efficiencies above 60%, some authors have reported pressure drops above 100 Pa [13,15,21,27].…”

Section: Raw Materials Research η [%]mentioning

confidence: 81%

“…Research studies have reported values between 9 Pa [27] and 365.5 Pa [21], higher than the reported values for the cellulose pad (<40 Pa) [36,44]. For cooling efficiencies above 60%, some authors have reported pressure drops above 100 Pa [13,15,21,27].…”

Section: Raw Materials Research η [%]mentioning

confidence: 81%

“…Aspen fibres media [5][6][7][8] 71.6-97.7 Coconut coir fibre [6,7,[9][10][11][12][13][14] 50.8-92.86 Expanded clay [15,16] 42.0-83.0 date palm fibre [17] 38.9 Eucalyptus fibre [18,19] 23.0-76.0 Jute fibre [17,[20][21][22] 57.0-87.0 Khus fibre [7,11,12,14] 64.2-82.0 Luffa fibre [12,17] 55.1-73.7 Palash fibres [7] 81.0 Rice straw [23] 31.0-79.0 Sackcloth [24] 69.0 Slice woods [25] 76.0 Straw fibre [24,25] 71.9-90.0 Wood savings [9] 25.0-65.8 Wood wool [9,11,12] 74.2-92.2…”

Section: Raw Materials Research η [%]mentioning

confidence: 99%

“…This was validated later by [32,35,36] for pads manufactured with cellulose, showing good agreement between the experimental and numerical results. Moreover, few authors have reported the convective heat and mass transfer coefficients or the characteristic length [7,13,21,26,30,33], making it difficult to develop future simulations of the same material under different conditions.…”

Section: Raw Materials Research η [%]mentioning

confidence: 99%

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Comparative Analysis of the Cooling Efficiency in Tropical Climate of Three Alternative Materials for Evaporative Cooling Pads

et al. 2021

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A comparison between commercial cellulose evaporative cooling pad and pads manufactured with three alternative materials was made for environmental conditions typical of tropical countries. Wind tunnel tests were carried out to compute the convective heat and mass transfer coefficients and to measure the pressure drop across each pad, obtaining expressions that can be used as reference for future simulations. Using a mathematical model, a detailed analysis of the efficiency, Temperature–Humidity Index, temperature drop and relative humidity through the pads was performed in terms of different operative and constructive conditions, such as air velocities, dry-bulb temperatures, relative humidity and pad thickness. Significant differences between the pressure drop across the pads were found, which increases with the inlet air velocity and water flow. A weak relation between the analysed variables and the inlet air velocity was found, while a high correlation between the analysed variables, pad thickness and the external environmental conditions was established. Cooling efficiencies above 40% and a Temperature–Humidity Index below the mild zone of thermal stress were obtained for the alternative panels. Although the cellulose cooling pad showed the best behaviour in all aspects, the alternative pads can be used as substituted in specific applications to reduce the Temperature–Humidity Index inside agricultural facilities.

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Section: Raw Materials Research η [%]mentioning

confidence: 81%

Section: Raw Materials Research η [%]mentioning

confidence: 81%

Section: Raw Materials Research η [%]mentioning

confidence: 99%

Section: Raw Materials Research η [%]mentioning

confidence: 99%

See 2 more Smart Citations

Comparative Analysis of the Cooling Efficiency in Tropical Climate of Three Alternative Materials for Evaporative Cooling Pads

et al. 2021

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“…When the ambient wind speed is still or low, natural ventilation cannot effectively cool the space likewise when forced ventilation is used, during the hot season when cooling is needed most, the heat that emanates from the fan motor and the heat generated due friction between the fan blades and the air molecules add to the cooling load of the office building (Cengel, 2002). Evaporative coolers cool an occupied space adiabatically by sensible and latent heat exchange between the incoming air and the water vapour (Kulkarni and Rajput, 2010). Inside occupied buildings, different performance criteria have been developed for the evaluation of thermal comfort.…”

mentioning

confidence: 99%

Numerical and Experimental Investigation of the Thermal Comfort of an Office Building Equipped with Hybrid Downdraft Evaporative Cooler

Haruna¹,

Rufai²,

Yahaya³

2021

jasem

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In office buildings, provision of thermal comfort for occupant’s high intellectual concentration, efficiency and productivity is imperative. This study experimentally and numerically investigates the thermal comfort performance of HDEC system equipped to an office building. The experiment was carried out in September, October and November for 24 working days and the thermal comfort Predicted Mean Vote (PMV) index being the objective function was determined using Centre for Built Environment thermal comfort tool. DesignBuilder CFD simulation software was employed to numerically determine the PMV index of the test office using ASHRAE Standard-55 thermal comfort range of PMV=±0.5. Minitab 19 software was used to validate the numerical results against the experimental results. The Pearson correlation coefficient and the P-value at 95% confidence level were 0.717 and 0.00 respectively while the RMSE computed was 0.653 indicating a good agreement between the numerical and the experimental results. Both PMV results indicate that the HDEC system is suitable for the provision of thermal comfort in office buildings and any other similar building.

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Comparative experimental investigation of novel organic materials for direct evaporative cooling applications in hot-dry climate

Doğramacı

Aydın

2020

Journal of Building Engineering

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Theoretical performance analysis of jute fiber rope bank as media in evaporative coolers

Cited by 13 publications

References 8 publications

Comparative Analysis of the Cooling Efficiency in Tropical Climate of Three Alternative Materials for Evaporative Cooling Pads

Comparative Analysis of the Cooling Efficiency in Tropical Climate of Three Alternative Materials for Evaporative Cooling Pads

Numerical and Experimental Investigation of the Thermal Comfort of an Office Building Equipped with Hybrid Downdraft Evaporative Cooler

Comparative experimental investigation of novel organic materials for direct evaporative cooling applications in hot-dry climate

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