Counter-flow indirect evaporative cooler for heat recovery in the temperate climate

Pandelidis, Demis; Cichoń, Aleksandra; Pacak, Anna; Anisimov, Sergey; Drąg, Paweł

doi:10.1016/j.energy.2018.09.123

Cited by 32 publications

(12 citation statements)

References 28 publications

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“…In the dewpoint IEC (D-IEC), the primary air is cooled below its wet-bulb temperature. Pandelidis et al [37] evaluated the performance of a counter-flow D-IEC under summer conditions. Their system was able to dehumidify the process air by 1.8 g/kg when the inlet conditions were 34°C and 50% RH.…”

Section: Types Of Indirect Evaporative Cooling Systemsmentioning

confidence: 99%

Indirect evaporative cooling for buildings: A comprehensive patents review

Mohammed

El-Morsi

Abdelaziz

2022

Journal of Building Engineering

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Section: Types Of Indirect Evaporative Cooling Systemsmentioning

confidence: 99%

Indirect evaporative cooling for buildings: A comprehensive patents review

Mohammed

El-Morsi

Abdelaziz

2022

Journal of Building Engineering

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“…In order to simplify the calculation, several assumptions are made as follows: 1) The heat exchange between the TIEC and the environment is ignored [18,19]. 2) The air flow is incompressible [20]. 3) The influence of thermal radiation is ignored.…”

Section: Numerical Modelmentioning

confidence: 99%

Numerical method and analysis of a tube indirect evaporative cooler

Zhou

et al. 2022

Therm sci

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The tube indirect evaporative cooler is energy-saving and environmentally friendly, and its heat transfer mechanism still needs to be fully indicated, for which the numerical method is more suitable than the experiment. Because many numerical researches focusing on the tube indirect evaporative cooler are usually based on the simplified models, such as single tube model, single side model, one-dimensional and two-dimensional model, the further improvement is still needed. Meanwhile, the tube indirect evaporative cooler is always expected to supply more cooling air with lower temperature at lower cost of energy, but many present studies are focusing on the improvement of heat transfer only and ignoring the energy cost. This paper proposed a three-dimensional full-scale numerical model and method verified by the experimental data, by which, the energy output (primary air-cooling capacity) and quality (temperature of primary air outlet) at the resistance loss(resistance) of the tube indirect evaporative cooler are analyzed with the help of Fluent software.

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“…Nevertheless, condensation probably takes place when the dew point temperature of ambient air is high, which is gradually obtaining attention in last few years. Some researchers conducted studies to investigate and prove the impact of the condensation from primary air on performance of IEC systems [13][14][15]. For TIEC system as mentioned above [9], the surface temperature of the product air channel would be much lower than that of the traditional indirect evaporative cooler due to the assistance of TEC modules, thus, condensation from the primary air is more likely to occur.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of a Novel Plate-Fin Indirect Evaporative Cooling System Considering Condensation

et al. 2021

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An indirect evaporative cooling system combining with thermoelectric cooling technology (i.e., TIEC system) is proposed, in which a counter-flow plate-fin indirect evaporative cooler is inserted with thermoelectric cooling (i.e., TEC) modules. In hot and humid climate, condensation may occur on the dry channel surface of the cooler. For the TIEC system, with the aid of TEC technology, the surface temperature of the dry channel can be much lower than that of a traditional indirect evaporative cooler, thus, the condensation from the primary air is more likely to take place. A numerical model of this novel TIEC system is developed with specifically taking condensation from primary air into account. Detailed performance analysis of the TIEC system is carried out. Analytical results found that the condensation from primary air reduces the dew point effectiveness by up to 45.0% by weakening the sensible heat transfer but increases the coefficient of performance by up to 62.2% by increasing the latent heat transfer, under given conditions. The effects of main operating conditions, such as the electrical current I and number n of TEC modules, inlet temperature Tp,i, humidity ratio RHp and velocity Vp of the primary air, and the mass flow rate ratio x of secondary to primary air, are investigated under non-condensation and condensation states. It is shown that condensate is more easily produced under higher I, n, Tp,i, RHp, x and lower Vp.

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Counter-flow indirect evaporative cooler for heat recovery in the temperate climate

Cited by 32 publications

References 28 publications

Indirect evaporative cooling for buildings: A comprehensive patents review

Indirect evaporative cooling for buildings: A comprehensive patents review

Numerical method and analysis of a tube indirect evaporative cooler

Numerical Investigation of a Novel Plate-Fin Indirect Evaporative Cooling System Considering Condensation

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