Conjugate heat and mass transfer in a total heat exchanger with cross-corrugated triangular ducts and one-step made asymmetric membranes

Li, Zhen Xing; Zhong, Ting Shu; Niu, Jianlei; Xiao, Fu; Zhang, Li‐Zhi

doi:10.1016/j.ijheatmasstransfer.2015.01.032

Cited by 37 publications

(13 citation statements)

References 33 publications

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“…The exterior dimensions are 462 × 185 × 185 mm, and the internal character dimensions are a channel height of L h = 2.8 mm, an apex angle of θ = π/2, and a plate thickness of δ plate = 100 µm. The operating parameters are air flow rates of From Table 2, the simulation results agreed well with the calculation results from [2].…”

Section: Modeling Validationsupporting

confidence: 71%

“…In this section, the mathematical model is validated by comparing it with the literature data [2]. The validated results are listed in Table 2.…”

Section: Modeling Validationmentioning

confidence: 99%

“…Many researchers have investigated the characteristics of heat transfer and flow of the cross-corrugated heat exchangers to enhance the heat transfer and decrease the pressure loss [2][3][4][5][6][7]. Some researchers studied the effect of geometric parameters on the thermohydraulic characteristics of the cross-corrugated heat exchangers.…”

Section: Introductionmentioning

confidence: 99%

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Optimal Design of an Air-to-Air Heat Exchanger with Cross-Corrugated Triangular Ducts by Using a Particle Swarm Optimization Algorithm

et al. 2017

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Air-to-air heat exchangers with cross-corrugated triangular ducts are widely used in various industrial fields to recover waste heat. The geometric parameters of the heat exchangers greatly affect the performance and total annual cost of these systems. In this study, the effectiveness-number of transfer units (ε-NTU) method was utilized to develop the thermal mathematical model, which was verified by comparing it with previous research. The configuration parameters of the heat exchanger were optimized in this study. The particle swarm optimization (PSO) algorithm was applied using both single and multi-objective algorithm. The colburn factor (j factor), friction factor (f factor), and comprehensive thermal hydraulic performance index (JF factor) were considered as objective functions to be optimized using a single objective and multi-objective algorithm. Then, the entropy generation rate and total annual cost were optimized by using a multi-objective PSO algorithm. In addition, to identify the influential geometric parameters, a global sensitivity analysis was performed. The sensitivity analysis showed that the apex angle θ, channel height H, and heat exchanger height L h influenced the performance and annual total cost of these systems.

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Section: Modeling Validationsupporting

confidence: 71%

“…In this section, the mathematical model is validated by comparing it with the literature data [2]. The validated results are listed in Table 2.…”

Section: Modeling Validationmentioning

confidence: 99%

See 1 more Smart Citation

Optimal Design of an Air-to-Air Heat Exchanger with Cross-Corrugated Triangular Ducts by Using a Particle Swarm Optimization Algorithm

et al. 2017

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“…There are several driving forces, which cause the transfer of moisture though membrane, such as the difference of density and pressure between both sides of the membrane. Membrane separates the exhaust and supplied flow, prevents dust, bacterium and poisonous substances like CO, CO 2 , CH 4 and so on, meanwhile it allows moisture from exhaust air pass through to supplied air.…”

Section: Moisture Transfermentioning

confidence: 99%

Evaluating the moisture transfer of membranes for total heat exchanger

Dvořák

2017

EPJ Web Conf.

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Abstract. This paper presents an experimental evaluation of moisture transfer of a novel membrane which is used in enthalpy heat exchanger. The moister transfer through a membrane was investigated in a model of counter flow heat exchanger and the effectiveness of moister transfer was evaluated for various flow velocities. It was found that the measuring error, i.e. difference between moister absorbed and released is quite high. Therefore, measuring uncertainty analyses were performed. The resulting uncertainty of effectiveness of moister transfer was derived using partial derivatives of all influencing quantities and considering both random and systematic uncertainties. It was found that measuring of mass flow rate has the biggest influence on resulting uncertainty of moister transfer effectiveness. Therefore, accuracy of measured air flow rates measuring must be improved to reach lower resulting uncertainty.

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“…Though the flat plate membrane type is simpler in construction, the hollow fibre membrane type promises relatively better effectiveness, due to the latter's considerable higher packing density [91]. Studies [92,93] have highlighted that although considerable vapour flux could be obtainable with the membranes, the dehumidification effectiveness was generally low, as the membranes offered resistance to mass transfer. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 15 …”

Section: Other Novel Systemsmentioning

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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Conjugate heat and mass transfer in a total heat exchanger with cross-corrugated triangular ducts and one-step made asymmetric membranes

Cited by 37 publications

References 33 publications

Optimal Design of an Air-to-Air Heat Exchanger with Cross-Corrugated Triangular Ducts by Using a Particle Swarm Optimization Algorithm

Optimal Design of an Air-to-Air Heat Exchanger with Cross-Corrugated Triangular Ducts by Using a Particle Swarm Optimization Algorithm

Evaluating the moisture transfer of membranes for total heat exchanger

Solar pond powered liquid desiccant evaporative cooling

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