High energy efficiency desiccant assisted automobile air-conditioner and its temperature and humidity control system

Nagaya, Kosuke; Senbongi, T.; Li, Y.; Zheng, Jiacheng; Murakami, Iwanori

doi:10.1016/j.applthermaleng.2005.12.005

Cited by 27 publications

(10 citation statements)

References 14 publications

(26 reference statements)

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“…The existing DAC systems have shown their worth for various applications, e.g. buildings 25,26 ; supermarkets, 27 schools, hotels, ice arenas, cold warehouses, hospitals, theaters 28 ; greenhouses [29][30][31] ; automobiles 32 ; marine ships 33,34 ; museums 35,36 ; wet markets 37 ; product storage and preservation. 38…”

Section: Motivation Of Desiccant Acmentioning

confidence: 99%

Solid desiccant dehumidification-based air-conditioning system for agricultural storage application: Theory and experiments

Mahmood

Sultan

Miyazaki

2019

Proceedings of the Institution of Mechanical Engineers, Part A:

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This study experimentally investigates desiccant dehumidification and indirect evaporative cooling for agricultural products' storage. Thermodynamic advantages of the proposed system are highlighted and compared to vapor compression systems. Significance of proposed system is discussed in relation to agricultural storage application. Factors affecting the postharvest quality of products are discussed, and consequently, the psychrometric zones are established for optimum storage. Hydrophilic polymeric sorbent-based desiccant units are used for the experimental investigation. An open-cycle experimental apparatus is setup by which desiccant dehumidification and regeneration processes are analyzed at various conditions. Thereby, a novel correlation is developed by which desiccant dehumidification process can be simulated precisely. The correlation is successfully validated against the experimental data of various conditions. Desiccant air-conditioning cycle is analyzed for two cases (i.e. case-A: dry-bulb temperature = 31 ℃, humidity-ratio = 6 g/kg-DA; and case-B: dry-bulb temperature = 13 ℃, humidity-ratio = 6 g/kg-DA) to investigate the proposed system's applicability for agricultural storage. The results show that the thermal coefficient of performance is highly influenced by ambient air conditions and decreases with the increase in regeneration temperature. The thermal coefficient of performance for case-A is higher as compared to case-B, and for both cases, it increases with the increase in wet-bulb effectiveness of the evaporative cooling unit.

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Section: Motivation Of Desiccant Acmentioning

confidence: 99%

Solid desiccant dehumidification-based air-conditioning system for agricultural storage application: Theory and experiments

Mahmood

Sultan

Miyazaki

2019

Proceedings of the Institution of Mechanical Engineers, Part A:

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“…AC for automobiles [4], wet markets [61], drying grains [15], greenhouses [69], marine ships [70,71], museums [72,73], hospitals, product storage and preservation. Some of the humidity based AC applications are plotted on psychometric charts as shown in Fig.…”

Section: Potential Applicationsmentioning

confidence: 99%

“…It uses environmentally harmful refrigerants and consumes primary energy in an inefficient way [3]. On the other hand the energy consumption can be reduced up to 5% for heating and 30% for cooling by the use of desiccant in the cooling systems [4]. In desiccant systems the latent load of AC is achieved by desiccant itself whereas the sensible load is accomplished by direct and/or indirect evaporative cooling [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

An overview of solid desiccant dehumidification and air conditioning systems

Sultan

El-Sharkawy

Miyazaki

et al. 2015

Renewable and Sustainable Energy Reviews

212

111

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“…Such characteristics of the DAC system make it promising for the widespread applications like agricultural product storage/preservation, greenhouses, marine ships, wet markets, automobiles, buildings, museums, hospitals (etc.) [12][13][14][15][16][17][18][19][20][21] .…”

Section: Introductionmentioning

confidence: 99%

Study on Water-Vapor Adsorption onto Polymer and Carbon Based Adsorbents for Air-Conditioning Applications

Mahmood¹,

Sultan²,

Miyazaki³

2019

Evergreen

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Carbon-based materials have shown huge potential in various adsorption based applications e.g. water and wastewater treatment. In addition, these are successfully utilized for various (methanol-, ethanol-, and ammonia-based) closed-cycle adsorption heat pump systems. Significance of polymers is also well-known in drug/medical industry, and therefore extensively studied for various aspects of adsorption. The study comprises two kinds of polymer and carbonbased materials for potential airconditioning applications. Water vapor adsorption comparison has been made among polymer, carbon-based and conventional hydrophilic adsorbent i.e. silica-gel. The size of desiccant unit in desiccant airconditioning (DAC) system has been determined and compared accordingly. Results showed that polymer sorbent (PS-II) can reduce the desiccant unit size (in the DAC system) by 2-3 times as compare to conventional silica-gel under particular conditions while utilizing it intelligently.

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High energy efficiency desiccant assisted automobile air-conditioner and its temperature and humidity control system

Cited by 27 publications

References 14 publications

Solid desiccant dehumidification-based air-conditioning system for agricultural storage application: Theory and experiments

Solid desiccant dehumidification-based air-conditioning system for agricultural storage application: Theory and experiments

An overview of solid desiccant dehumidification and air conditioning systems

Study on Water-Vapor Adsorption onto Polymer and Carbon Based Adsorbents for Air-Conditioning Applications

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