Numerical investigation of a novel tubular dew-point evaporative cooler

Gao, Fangrui; Thu, Kyaw; Wang, Sibao; Zhao, Fangyuan; Lin, Jie; Wu, Kaiyao

doi:10.1016/j.applthermaleng.2023.120064

Cited by 9 publications

(4 citation statements)

References 29 publications

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“…6(b). The mesh is built in the same environment based on [19], besides their difference in governing physics.…”

Section: Numerical Methods and Grid Independence Studymentioning

confidence: 99%

“…The 2D CFD laminar model for DPEC has been proposed by the authors in [14,19]. To solve the governing equations and additive turbulent closures, the boundary conditions that contain the heat transfer between supply air and rib-roughened plate, as well as the evaporative heat and mass transfer at the interface between the water film and the working air, are given in Fig.…”

Section: Governing Equations and Boundary Conditionsmentioning

confidence: 99%

“…The optimized COP values were 50.26, 44.19, and 37.14 for office, restaurant, and auditorium, with corresponding working-supply air ratios of 0.45, 0.45-0.8 and 0.45-0.8, respectively. Gao et al [19] studied a tube-type DPEC. The evaporation and cooling characteristics of the tube channels were analogously modeled to the plate channels.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Enhanced Dew-Point Evaporative Cooling with a Macro-Roughened Structure

Wang

et al. 2023

Preprint

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“…6(b). The mesh is built in the same environment based on [19], besides their difference in governing physics.…”

Section: Numerical Methods and Grid Independence Studymentioning

confidence: 99%

Section: Governing Equations and Boundary Conditionsmentioning

confidence: 99%

See 1 more Smart Citation

The Enhanced Dew-Point Evaporative Cooling with a Macro-Roughened Structure

Wang

et al. 2023

Preprint

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“…The discrete phase model (DPM) [33] enables the simulation of droplet movement and evaporation processes instead of water film. In recent years, the COMSOL transport of diluted species module [8,[34][35][36][37] for water film evaporation of IEC has gained popularity, but it solely focuses on the heat and mass transfer processes resulting from water film evaporation and disregards the flow and heat transfer with the water film.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis on Performance Improvement of a Vertical Plate Indirect Evaporative Cooler with Baffles

Zhou,

Cheng,

Wang

et al. 2024

Energies

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The performance of the Plate Indirect Evaporative Cooler (PIEC) can be effectively improved by incorporating baffles in the dry channel. However, in the dimensional influence of the baffles on PIEC performance there remains a research gap. In order to investigate the impact of baffle dimensions on the wet bulb efficiency, namely the average heat transfer coefficient and the cooling capacity of the PIEC, this paper proposed and verified a three-dimensional numerical model and method based on the species transport model and the Euler wall film model. At the same time, in order to obtain the equilibrium point between the enhanced heat transfer performance and the additional resistance induced by baffles, a comprehensive performance evaluation index is introduced. The results indicate that, under the same conditions, (1) the baffle effect on PIEC performance is significant at a lower inlet air velocity, and the wet bulb efficiency of the PIEC with baffles can be improved by 22.8%; (2) the baffle effect on PIEC performance is negative if its relative length exceeds 60% or the primary air inlet velocity surpasses 4 m/s under the conditions specified in this paper; and (3) the baffle effect on PIEC performance is significant when its channel height is lower and its channel width is larger, and the wet bulb efficiency of the PIEC with baffles can be improved by 29.3%.

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