Novel modeling of an indirect evaporative cooling system with cross-flow configuration

Heidarinejad, Ghassem; Moshari, Shahab

doi:10.1016/j.enbuild.2015.01.034

Cited by 87 publications

(21 citation statements)

References 21 publications

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“…18 surface, the system works merely as an IEC. Thus the heat and mass transfer is between the processes of DEC and IEC [100]. And the wet-bulb effectiveness of the system can be obtained as outline earlier, and could be in the range of 40 -80% [98].…”

Section: Indirect Evaporative Coolersmentioning

confidence: 99%

Solar pond powered liquid desiccant evaporative cooling

Elsarrag

Igobo

Alhorr

et al. 2016

Renewable and Sustainable Energy Reviews

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Liquid desiccant cooling systems (LDCS) are energy efficient means of providing cooling, especially when powered by low-grade thermal sources. In this paper, the underlying principles of operation of desiccant cooling systems are examined, and the main components (dehumidifier, evaporative cooler and regenerator) of the LDCS are reviewed. The evaporative cooler can take the form of direct, indirect or semi-indirect. Relative to the direct type, the indirect type is generally less effective. Nonetheless, a certain variant of the indirect type -namely dew-point evaporative cooler -is found to be the most effective amongst all. The dehumidifier and the regenerator can be of the same type of equipment: packed tower and falling film are popular choices, especially when fitted with an internal heat exchanger. The energy requirement of the regenerator can be supplied from solar thermal collectors, of which a solar pond is an interesting option especially when a large scale or storage capability is desired.

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Section: Indirect Evaporative Coolersmentioning

confidence: 99%

Solar pond powered liquid desiccant evaporative cooling

Elsarrag

Igobo

Alhorr

et al. 2016

Renewable and Sustainable Energy Reviews

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“…The cooling capacity increased by about 13% and the required energy for cooling was cut in half during the summer season. Heidarinejad and Moshari [13] studied the effect of convective heat transfer when they developed their novel model for a cross flow indirect evaporative cooler. They analyzed the conduction along plate walls and the…”

Section: Tfec-2018-21631mentioning

confidence: 99%

Theoretical Analysis of Combined Compact Evaporative Cooler

Ismael

Ezzi

2018

Proceeding of 3rd Thermal and Fluids Engineering Conference (TFEC)

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An evaporative cooling system (ECS) has a number of benefits. First and foremost, it will use only a fraction of the energy of typical compressor-based cooling systems. ECS's is divided into three different types: 1) direct evaporative coolers (DECs), 2) indirect evaporative coolers (IECs), and (3) a combined system of direct and indirect evaporative coolers (DIECs). Although the DEC is simple and economical, the efficiency is low, as it cannot achieve a cooling temperature lower than wet bulb temperature. While some IECs or DIECs can achieve a higher performance, the system is complex and the initial cost is high. This paper presents a theoretical model of a combined compact evaporative cooler (CCEC), which utilizes thin film evaporation. To verify the model, the prediction has compared with experimental data, and results show that the model can be used to predict the effects of relative humidity and air flow rate based on the wet bulb effectiveness and dew point effectiveness in this CCEC system. Most importantly, it shows that this CCEC system can achieve an ultra-high cooling efficiency.

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“…Anisimov et al [18] numerically investigated selected evaporative exchangers with the Maisotsenko cycle. Based on the modified ɛ-NTU No study had been reported on the effects of spray water temperature variation along the exchanger surface and LHC in the exchanger plates of IEC and REC before Heidarinejad and moshari [22] model. They reported that with respect to the real physical processes of heat and mass transfer in the exchanger, considerations of spray water temperature variation and LHC in the exchanger plates resulted in a more precise model for above and sub wet bulb cooling using IEC and REC.…”

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confidence: 99%

“…With respect to the aforementioned researches, a key purpose of this study was to simulate three configuration of the REC (Counter-Flow Configuration, Cross-Flow Configuration with counter-flow of working air to water layer and Cross-Flow Configuration with parallel-flow of working air to water layer) using Heidarinejad and moshari [22] model. In order to show the impacts of pre-cooling the working air, Cross-and Counter-Flow REC is simulated and compared with a four-stage IEC.…”

mentioning

confidence: 99%