Performance Analysis of a Double-effect Adsorption Refrigeration Cycle with a Silica Gel/Water Working Pair

Marlinda,; Uyun, Aep Saepul; Miyazaki, Takahiko; Ueda, Yuichi; Akisawa, Atsushi

doi:10.3390/en3111704

Cited by 28 publications

(8 citation statements)

References 24 publications

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“…Indeed, the technology of these machines is simple, maintenance is easy, and the materials used, are recyclable [5]. In addition, these machines use refrigerants such as water [6], methanol [7] and ammonia [8], which have no effect on the environment. For countries such as Burkina Faso, with favorable sunshine with an average irradiation between 5.5 kWh•m −2 •day −1 and 65 kWh•hm −2 •day −1 [9], solar adsorption refrigeration is a promising solution to meet important needs such as food preservation, pharmaceuticals, air conditioning, etc.…”

Section: Introductionmentioning

confidence: 99%

Contribution to the Modeling of a Solar Adsorption Refrigerator under the Climatic Conditions of Burkina Faso

Tubreoumya¹,

Dissa²,

Tiendrebeogo³

et al. 2017

EPE

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This work concerns a dynamic modeling and a numerical simulation of the operation of an adsorption solar refrigeration system using the zeolite-water couple. For this, a mathematical model representing the evolution of heat and mass transfer at each component of the solar adsorption refrigerator has been developed. We have adopted the Dubinin-Astakhov model for the adsorption kinetics of the zeolite/water pair. This model allows to describe the phenomenon of adsorption and to calculate the rate of adsorbate (water) in the zeolite (adsorbent) as a function of the temperature and the pressure. The equations governing the operation of the solar adsorption refrigerator, deduced from the thermal and mass balances established at the collector adsorber, condenser and evaporator components, were solved by an implicit finite difference scheme and Gauss Seidel's iterative method. We have validated the model established by applying it to the model of Allouhi et al. 2014. We analyzed the influence of the adsorbate/adsorbent couples, the solar flux, the ambient temperature on the adsorption and desorption process. The temperature profiles obtained representing the temperature evolution of the glass, the absorbent plate, the zeolite-water mixture, the condenser, the evaporator, as well as the pressure and the adsorbed mass allowed us to evaluate the performance of the solar adsorption refrigerator. SCOP is higher the higher the solar flux captured by the collector-adsorber.

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Section: Introductionmentioning

confidence: 99%

Contribution to the Modeling of a Solar Adsorption Refrigerator under the Climatic Conditions of Burkina Faso

Tubreoumya¹,

Dissa²,

Tiendrebeogo³

et al. 2017

EPE

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“…Recently, Marlinda published papers that refer to the feasibility of a double-effect adsorption chiller for numerical analysis. As a result, a double-effect cycle can be operated at the heat source temperature of 90˚C [5] [6]. In addition, The COP of a double effect cycle is more than twice that of a single-effect cycle at a heat source temperature of 130˚C.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Characteristic of Adsorption in a Double-Effect Adsorption Chiller with FAM-Z01

Esaki¹,

Kobayashi²,

Matsuda³

2016

MSCE

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Here, we propose a double-effect adsorption chiller with a zeolite adsorbent (FAM-Z01) for utilization of waste heat. The FAM-Z01 adsorbent has the potential to recover waste heat in low temperatures ranging from 353 to 333 K and shows good potential in the adsorption chiller in terms of the high cooling output. A doubleeffect adsorption chiller could provide a higher Coefficient Of Performance (COP) than that of a single-effect chiller. In this paper, we developed a measuring method for the amount of adsorption in the first and second adsorber in a double-effect adsorption chiller and measured the adsorption and desorption rate based on the volumetric method. We calculated the COP of the adsorption chiller with the quantity of adsorbent obtained in the experiment. In the experiments, the quantity of adsorbent in the first adsorber was 0.14 g-H 2 O/g-Ads at the pressure 20 kPa and a desorption temperature over 100˚C. The amount of adsorbent in the second adsorber was equal to that of the first adsorber. By analyzing the COP with the experimental results, the COP value was calculated to be over 1.0 (−) at any desorption temperature. The COP of the double-effect cycle was higher than that of single-effect cycle.

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“…Various studies have been conducted to produce continuous cooling with multi bed and advance cycle operation in adsorption cooling system technology. The performance of these systems were enhanced by using the advanced operations like internal mass recovery cycle [10,11], heat and mass recovery cycles [12], multistage and cascade cycles [13,14]. In all these multi bed advance cycle systems, a continuous heating source is necessary to produce cooling continuously.…”

Section: Introductionmentioning

confidence: 99%

Simulation Study of Continuous Solar Adsorption Refrigeration System Driven by Compound Parabolic Concentrator

Umair¹,

Akisawa²,

Ueda³

2014

TOREJ

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Solar adsorption refrigeration is promising technology especially in the developing countries and remote areas because the system can be driven by solar energy without involving electricity. Therefore, it is technologically possible and socially feasible in the areas where electricity is not enough but solar energy is rather easy to obtain. The conventional system works intermittently and produces cooling only during night. In this article, a solar adsorption refrigerator is presented that produces cooling continuously using only solar energy. The system consists of two beds with CPC collectors, a condenser and evaporator. The one cycle complete in two days. A simulation model was developed to evaluate the system performance. The objectives of this study were to investigate the dynamic behaviour of the system, and to compare the system behaviour with the conventional system. The results show that system produces continuous cooling. Cooling rate decreased in the middle of the day because of relatively high ambient temperature. The performance of the system increased with high value of heat transfer coefficient between receiver and bed, and decreased by increasing the adsorbent mass. The performance of the continuous system was compared with that of intermittent system. It was found that the evaporator temperature in the intermittent system increased during the day because cooling is not produced during day in that system, while proposed system kept the evaporator at low temperature continuously. This study will facilitate the future researches in solar adsorption continuous refrigeration technology because achieving continuous cooling only with solar energy is very attractive.

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Performance Analysis of a Double-effect Adsorption Refrigeration Cycle with a Silica Gel/Water Working Pair

Cited by 28 publications

References 24 publications

Contribution to the Modeling of a Solar Adsorption Refrigerator under the Climatic Conditions of Burkina Faso

Contribution to the Modeling of a Solar Adsorption Refrigerator under the Climatic Conditions of Burkina Faso

Evaluation of the Characteristic of Adsorption in a Double-Effect Adsorption Chiller with FAM-Z01

Simulation Study of Continuous Solar Adsorption Refrigeration System Driven by Compound Parabolic Concentrator

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