The role of the thermally activated desiccant cooling technologies in the issue of energy and environment

Enteria, Napoleon; Mizutani, Kunio

doi:10.1016/j.rser.2011.01.013

Cited by 125 publications

(46 citation statements)

References 156 publications

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“…In this section, only the dehumidifier is the focus; more details on the other components and possible configurations of a desiccant dehumidifier cooling or heating systems are given in Refs. [89,90].…”

Section: Working Principle Of Dehumidification and Desiccant Coolingmentioning

confidence: 99%

A review on the use of calcium chloride in applied thermal engineering

N’Tsoukpoe¹,

Rammelberg²,

Fopah-Lele³

et al. 2015

Applied Thermal Engineering

109

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Section: Working Principle Of Dehumidification and Desiccant Coolingmentioning

confidence: 99%

A review on the use of calcium chloride in applied thermal engineering

N’Tsoukpoe¹,

Rammelberg²,

Fopah-Lele³

et al. 2015

Applied Thermal Engineering

109

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“…Made studies show that the adsorption cooling systems still require significant research, development activities and practicability of these technologies [4]- [11], [14], [15]. It is a quite new topic if it comes to practical applications.…”

Section: Introductionmentioning

confidence: 99%

Simulation and Analysis of Small-Scale Solar Adsorption Cooling System for Cold Climate

Januševičius¹,

Streckienė²,

Misevičiūtė³

2015

IJESD

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Abstract-In the current study, research on the performance characteristics of an adsorption cooling system supplied by solar energy is presented. The main task for the analyzed system was to ensure cooling load for the non-residential building in cold climate country. A 8.0 kW adsorption thermal cooling system was studied. The system got heat produced by evacuated tube solar collectors. The parametric simulation study was carried using a TRNSYS (Transient Systems Simulation) program to determine the influence of various parameters on the system performance. The dependencies of collector slope and the total absorber area on solar fraction, discarded energy, coefficient of performance, seasonal performance factor were studied. The highest solar fraction, coefficient of performance and seasonal performance factor values were obtained if the collector slope was approximately 30 degrees and the absorber area was 16 m 2 for the analyzed cases. The total primary energy consumption of the system was examined for various cases of primary energy factor for auxiliary heat and consumed electricity. On the basis of the results, it was proposed the expression of total primary energy consumption. The obtained results could be used for the recommendation preparations for decision makers to select a small scale solar cooling adsorption system.

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“…These devices are called the mechanical vapor compression system [1]. Several researches are conducted to improve the system performance.…”

Section: Introductionmentioning

confidence: 99%

“…The sorption process (adsorption and absorption) is an interaction between the sorbent and sorbate molecule through intermolecular interaction [1]. Since desiccant materials have low concentration of water content, the air moisture content is attracted to the surface of the desiccant materials due to the moisture vapor pressure difference between the air and the desiccant surface.…”

Section: Introductionmentioning

confidence: 99%

“…Since desiccant materials have low concentration of water content, the air moisture content is attracted to the surface of the desiccant materials due to the moisture vapor pressure difference between the air and the desiccant surface. [1]. In order for the desiccant material to be used again, application of thermal energy is necessary to remove the moisture from the desiccant materials [1].…”

Section: Introductionmentioning

confidence: 99%

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A Study of Desiccant-Based Cooling and Dehumidifying System in Hot-Humid Climate

Khoukhi¹

2013

IJMMM

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Abstract-The objective of this study is to investigate the feasibility of using desiccant cooling system as an alternative HVAC solution in buildings to achieve thermal comfort. This solution is more attractive when the solar energy is used to regenerate the desiccant wheel. An extensive experimental study has been performed in Tohoku University in Japan. A TRNSYS model of the desiccant cooling system combined with the heat wheel and heat source has been simulated and compared with the experimental data. The results of the simulation show that such system is feasible for cooling building in hot-humid climates.Index Terms-Cooling, desiccant wheel, hot-humid climate. I. INTRODUCTIONThe building sector (commercial and residential) consume large amount of energy to support its operation and maintenance. Moreover, the large part of the energy demand by building is used to support indoor thermal comfort condition.The provision of the building indoor thermal comfort conditions either through heating or cooling is done by the heat pumping system. These devices are called the mechanical vapor compression system [1]. Several researches are conducted to improve the system performance. However, the system still consumes a huge amount of energy. The main energy source of the mechanical vapor compression system is the electric energy from the grid line. In the Middle East, more than 70% of the building energy consumption is to support cooling [2]. In Europe, 10% of the building sector energy consumption is like wise to support cooling demand [3]. In Hong Kong, 45% of the commercial building energy consumption is also for cooling [4]. In Japan, 3% of the building sector energy consumption is for cooling application [5]. It is expected that in tropical countries which are hot and humid, energy demand for cooling and dehumidification is very high [6].Alternative air-conditioning (AC) system which utilizes alternative materials, process, and energy resources can largely reduce building energy consumption [7,8]. Among the alternative AC systems the desiccant cooling systems which can be operated through direct thermal energy, are important options for building cooling.The desiccant air conditioning system utilizes the capability of desiccant materials in removing the air moisture content by sorption process. The sorption process (adsorption and absorption) is an interaction between the sorbent and sorbate molecule through intermolecular interaction [1]. Since desiccant materials have low concentration of water content, the air moisture content is attracted to the surface of the desiccant materials due to the moisture vapor pressure difference between the air and the desiccant surface. [1]. In order for the desiccant material to be used again, application of thermal energy is necessary to remove the moisture from the desiccant materials [1]. Fig. 1 shows the basic concept and diagram of the thermally activated desiccant cooling technologies. II. SOLID DESICCANT COOLING PRINCIPLES AND CONCEPT A. Concept and OperationThe solid desicc...

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The role of the thermally activated desiccant cooling technologies in the issue of energy and environment

Cited by 125 publications

References 156 publications

A review on the use of calcium chloride in applied thermal engineering

A review on the use of calcium chloride in applied thermal engineering

Simulation and Analysis of Small-Scale Solar Adsorption Cooling System for Cold Climate

A Study of Desiccant-Based Cooling and Dehumidifying System in Hot-Humid Climate

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