Performance Analysis of a Maisotsenko Cycle-Based Energy-Efficient Evaporative Air Conditioner

Wani, Chandrakant; Ghodke, Satyashree

doi:10.1615/interjenercleanenv.2013006192

Cited by 6 publications

(5 citation statements)

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“…Duan et al [12] presented a comprehensive description of the IEC working principle, performance parameters, operating conditions, and possible future developments, also describing many studies concerning experimental analyses, models, and social-technical aspects, such as cost, environmental impact, life-cycle assessment, and potential market barriers. Wani et al [13] analyzed the energy saving possibilities of applying the Maisotsenko cycle (Mcycle) in evaporative cooling applications. Amer et al [14] described in detail the DEC, IEC, and combined DEC/IEC systems, with a particular focus on their possible applications.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Indirect Evaporative Cooling Systems: A Review

Caruana,

De Antonellis,

Marocco

et al. 2023

Fluids

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Air-to-air indirect evaporative cooling (IEC) systems are particular heat exchangers that use the latent heat of evaporation of water to cool down an air stream, without increasing its specific humidity, thus guaranteeing adequate thermohygrometric conditions in the refrigerated environment with low energy consumption. Dew-point indirect evaporative cooling (DIEC) systems are based on the IEC technology, but they recirculate a part of the air taken from the room to be refrigerated, in order to possibly achieve a lower air temperature. IEC and DIEC systems are becoming increasingly common these years, as they can ensure a good efficiency, minimizing the environmental impact of the air-conditioning system. Consequently, it has been necessary to develop models, both analytical and numerical, to quickly and accurately design this type of system and to predict their performance. This paper presents a review of the analytical and numerical models developed specifically for IEC and DIEC systems, highlighting their method, main innovations and advantages, and possible limitations. From this analysis, it emerged that analytical models have been developed since the late 1990s and only few of them are suitable for DIEC heat exchangers, while numerical models for both IEC and DIEC systems are gaining popularity in recent years. Almost all the analyzed models have been validated by comparison with numerical and/or experimental data, showing a maximum discrepancy within 10% in the majority of the cases. However, the validations were performed for a few specific cases, so in real applications it might be difficult to associate the model boundary conditions and the heat exchangers operating conditions, such as nozzles orientations, plates materials, water flow rates, and configurations. Another common limitation concerns the modeling of some properties, as wettability factor and air density, which might affect the accuracy of the results.

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Section: Introductionmentioning

confidence: 99%

Modeling of Indirect Evaporative Cooling Systems: A Review

Caruana,

De Antonellis,

Marocco

et al. 2023

Fluids

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“…Several studies focused on the study of porous materials for the wet duct of the heat exchanger, such as: cellulose fiber coating for metal foils, cotton wool, honeycomb structures, coconut fibers, polymer sheets, stainless steel with sintered nickel layers, etc. [4,5]. This work aims to study the thermophysical properties of aluminum heat transfer surfaces coated with biochar powder to estimate its performance on an indirect evaporative heat exchanger.…”

Section: Introductionmentioning

confidence: 99%

The Thermal Diffusivity of Biochar Coating Deposited on a Heat Exchanger

Bison,

Ferrarini,

Morselli

et al. 2023

The 17th International Workshop on Advanced Infrared Technology and Applications

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“…1. M-cycle deliver cooling air temperature lower than either direct or indirect evaporative cooling systems without adding moisture [14] until dew point (lower than wet-bulb).…”

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confidence: 99%

“…2. M-cycle technology uses much less energy than conventional compression air-cooler [14] 3. There is no direct contact between water and product air which removes the possibility of health issues from contaminated water.…”

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confidence: 99%