Numerical modeling of rigid media evaporative cooler

Beshkani, A.; Hosseini, Reza

doi:10.1016/j.applthermaleng.2005.06.006

Cited by 49 publications

(18 citation statements)

References 4 publications

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“…CELdek 7090-15 was used as a packing medium in the REG with cross-sectional dimensions of 350 mm × 350 mm. The packing media was 700 mm in length and constituted cellulose rigid pads that enhance the transfer of heat and mass by large pores on the surface [14,19,20]. A Teflon heating coil material was used for solution heating because the coil surface can be corroded by the desiccant solution.…”

Section: System Descriptionmentioning

confidence: 99%

Energy Benefit of Liquid Desiccant-Assisted Humidification in Buildings during Winter Operation

2021

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The objective of this study was to modify an existing liquid desiccant and indirect/direct evaporative cooling-assisted 100% outdoor air system (LD-IDECOAS) for humidification operation in winter. The energy benefit of the liquid desiccant-assisted humidification approach during the operation of LD-IDECOAS over the conventional method with a steam humidifier was evaluated through a detailed energy simulation. The humidification and enthalpy effectiveness values of the liquid desiccant humidification measured from laboratory tests were 0.41 and 0.49, respectively, which were applied to the energy simulation for the modified system. Both systems with the proposed and conventional humidification approaches were simulated using an engineering equation solver combined with a TRNSYS 18 energy simulation program. The results demonstrated that the modified LD-IDECOAS consumes less energy for humidification compared to the existing system with a steam humidifier. The proposed system also exhibited considerable heating energy-saving potential. Consequently, modified LD-IDECOAS consumed 42% less primary energy during winter operation after being modified for liquid desiccant-assisted humidification.

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Section: System Descriptionmentioning

confidence: 99%

Energy Benefit of Liquid Desiccant-Assisted Humidification in Buildings during Winter Operation

2021

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“…An optimum frontal velocity of 2.5 m/s has been recommended. Numerical analysis of heat and mass transfer in direct evaporative cooler has been carried out by Wu et al [10] and, Beshkani and Hosseini [11]. The predicted results show that the choice of pad material, inlet frontal velocity of air and pad thickness are the important factors for obtaining better performance.…”

Section: Introductionmentioning

confidence: 96%

Application of Taguchi method for the optimization of system parameters of centrifugal evaporative air cooler

Senthilkumar¹,

Srinivasan²

2010

J. Therm. Sci.

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A new evaporative cooling system based on the action of centrifugal forces is proposed. Such systems are suitable for cooling large air volumes in tropical climates. Effects of geometrical and operational parameters on system performance are optimized using Taguchi method. It is observed that disc speed, air flow rate and water flow rate are found to have major influence on system performance and other parameter, viz., disc diameter, pin geometry, evaporation chamber length and orientation of pin have less influence.

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“…Evaporative methods are the most common ways of cooling inlet air because of their simplicity, low installation and O&M costs, but most effective only for dry-hot climates [9,10]. Media-based evaporative cooler has been discussed in several studies [11][12][13][14]. R.Hosseini [12] modeled a traditional media evaporative cooler installed in a combined cycle power plant, Iran, and evaluated it with different design parameters.…”

Section: Introductionmentioning

confidence: 99%

Field Experiments and Technical Evaluation of an Optimized Media Evaporative Cooler for Gas Turbine Power Augmentation

Behdashti¹,

Ebrahimpour

Vahidi

et al. 2012

JART

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This paper discusses an optimized media type evaporative cooling system called Outdoor Movable Media cooler which has been recently implemented on two 160 MW, V94.2 gas turbines of Kerman combined cycle power plant, Iran. The air cooling system can be applied to retrieve the lost power generation capability of gas turbine during hot months. System description is completely presented and optimizations such as making a movable media cooler are described. The moving ability of this system eliminates the power loss related to the conventional media coolers. Furthermore, experimental work including evaluation of humidity effect on the air filters operation is discussed and the results are presented. The cooling system performance curve shows the system capability of cooling the inlet air up to 19°C at the design condition. This cooling capacity leads to power augmentation up to 14% which is noteworthy in responding to the electricity demand in hot months, when air-conditioning loads are maximized. Considering several parameters, a cost analysis is done finally and payback period of the system is calculated.

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Numerical modeling of rigid media evaporative cooler

Cited by 49 publications

References 4 publications

Energy Benefit of Liquid Desiccant-Assisted Humidification in Buildings during Winter Operation

Energy Benefit of Liquid Desiccant-Assisted Humidification in Buildings during Winter Operation

Application of Taguchi method for the optimization of system parameters of centrifugal evaporative air cooler

Field Experiments and Technical Evaluation of an Optimized Media Evaporative Cooler for Gas Turbine Power Augmentation

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