Experimental investigation into the integration of solid desiccant packed beds with oscillating heat pipes for energy efficient isothermal adsorption processes

Yeboah, Siegfried; Darkwa, Jo

doi:10.1016/j.tsep.2020.100791

Cited by 6 publications

(3 citation statements)

References 37 publications

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“…The maximum dehumidification efficiency was 73.9%, increased by 43.8%, and the increase rate was 145.51%. Yeboah et al [30] combined the helically coiled oscillating heat pipes (HCOHPs) using ethanol, methanol and deionized water as working fluids with the packed bed, as shown in Figure 2d. HCOHPs was used to eliminate the heat released by the desiccant adsorbed water vapor, thus reducing the temperature of the packed bed and improving the adsorption performance of the desiccant.…”

Section: Single Materials Packed Bedmentioning

confidence: 99%

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Research Progress of Fixed Bed Dehumidification System: A Mini Review

Xiao

Han

2022

J. Solar Eneg. Res. Updat.

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In recent years, the fixed bed dehumidification system has received extensive attention. Research shows that the fixed bed can be combined with the vapor compression refrigeration system to replace the traditional air conditioning (A/C) system, improve the dehumidification efficiency of the system and reduce energy consumption of A/C. In this study, the optimization and improvement methods of the fixed bed dehumidifier in recent years are introduced in detail firstly. It points out that adding heating/cooling devices to the fixed bed can greatly improve the dehumidification capacity and efficiency of the system, which is the main method to improve the fixed bed currently; Optimizing the structure of fixed bed is also an effective method, but the current research results have limited improvement on dehumidification performance; Optimizing the regeneration mode of fixed bed can improve the utilization rate of renewable energy and improving the overall dehumidification efficiency of the system, but the research in the direction is still insufficient; The parallel double packed bed structure can ensure the continuous operation of the fixed bed to improve the dehumidification efficiency of the system, but such systems are large in scale and high in cost. Then the dehumidification performances of various systems are summarized and comprehensively compared. Finally, the future optimization and improvement direction of the fixed bed is pointed out.

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Section: Single Materials Packed Bedmentioning

confidence: 99%

“…Figure 2: (a) Intercooling packed bed[17], (b) Cooling packed bed[28], (c) Internal cooling solid desiccant bed[29], (d) Schematic of the three HCOHPs integrated with the packed bed[30], (e) Schematic diagram of air dehumidification system[31], (f) Structure diagram of fixed bed with water pipes[32].…”

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confidence: 99%

Research Progress of Fixed Bed Dehumidification System: A Mini Review

Xiao

Han

2022

J. Solar Eneg. Res. Updat.

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“…The stability of nano-fluids is a major problem of PHP applications [172]; (4) The current research on PHP work fluids mainly focuses on the heat transfer performance or flow of PHP with a certain work medium [173]. The current research is lacking the selection criteria of the work medium under different conditions, which can only passively test the characteristics of the work fluid in experiments [174].…”

Section: Pressure Fluctuations Of the Phpmentioning

confidence: 99%

Micro-Channel Oscillating Heat Pipe Energy Conversion Approach of Battery Heat Dissipation Improvement: A Review

Xin

Zhu

2022

Energies

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The application of batteries has become more and more extensive, and the heat dissipation problem cannot be ignored. Oscillating Heat Pipe (OHP) is a good means of heat dissipation. In this paper, the methods to improve the energy conversion and flow thermal performance of micro-channel OHP are studied and summarized. The working principle, heat transfer mechanism, advantages and applications of PHP are also introduced in detail in this study. Proper adjustment of the micro-channel layout can increase the heat transfer limit of PHP by 44%. The thermal resistance of two-diameter channel PHP is 45% lower than that of conventional PHP. The thermal resistance of PHP under uneven heating can be reduced to 50% of the original. PHP pulse heating can alleviate the phenomenon of dryness. Different working fluids have different effects on PHP. The use of graphene nano-fluids as the work medium can reduce the thermal resistance of PHP by 83.6%. The work medium obtained by the mixture of different fluids has the potential to compensate for the defects while inheriting the advantages of a single fluid.

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