Experimental investigation of a solar adsorption refrigeration system working with silicagel/water pair: A case study for Bou-Ismail solar data

Bouzeffour, Fatih; Khelidj, B.; Abbès, Miloud Tahar

doi:10.1016/j.solener.2016.02.043

Cited by 30 publications

(5 citation statements)

References 23 publications

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“…As an effective means of saving energy, utilization of low grade thermal energy such as solar energy, industrial waste heat and geothermal energy attracts more and more attentions because of concerns on climate change and global warming. Chemisorption is one of attractive chemical processes, which can be widely used in different areas such as heat pump, energy storage, adsorption refrigeration, and combined power and cooling systems [1][2][3][4][5][6] . Inorganic salts adsorbing ammonia by solid-gas reaction has obtained ever-increasing attentions because of the high flexibility in the application of different temperature heat sources, especially low-grade thermal energy [7][8][9] .…”

Section: Introduction mentioning

confidence: 99%

Fabrication and thermal conductivity improvement of novel composite adsorbents adding with nanoparticles

Zhang

et al. 2016

Chin. J. Mech. Eng.

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Thermal conductivity is one of key parameters of adsorbents, which will affect the overall system performance of adsorption chiller. To improve adsorbent's thermal conductivity is always one of research focuses in chemisorption field. A new chemical composite adsorbent is fabricated by adding carbon coated metal(Aluminum and Nickel) nanoparticles with three different addition amounts into the mixture of chloride salts and natural expanded graphite aiming to improve the thermal conductivity. The preparation processes and its thermal conductivity of this novel composite adsorbent are reported and summarized. Experimental results indicate that the nanoparticles are homogenously dispersed in the composite adsorbent by applying the reported preparation processes. The thermal conductivity of the composite adsorbent can averagely enlarge by 20% when the weight ratio of the added nanoparticles is 10 wt%. Moreover, carbon coated aluminum nanoparticles exhibit more effective enlargement in thermal conductivity than nickel nanoparticles. As for the composite adsorbent of CaCl 2-NEG, there is a big reinforcement from 30% to 50% for Al@C nanoparticles, however only 10% in maximum caused by Ni@C nanoparticles. The proposed research provides a methodology to design and prepare thermal conductive chemical composite adsorbent.

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Section: Introduction mentioning

confidence: 99%

Fabrication and thermal conductivity improvement of novel composite adsorbents adding with nanoparticles

Zhang

et al. 2016

Chin. J. Mech. Eng.

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“…On ice making application, activated carbon-methanol pair (Boubakri et al, 1992, Li et al, 2002, monolithic carbon-ammonia pair (Tamainot-Telto and Critoph, 1997) and compound adsorbent of activated carbon and CaCl 2 -ammonia pair (Lu et al, 2006) have been reported. Silica gel-water (Hildbrand et al, 2004, Bouzeffour and Khelidj, 2016, Brites et al, 2016, activated carbon-ethanol (Frazzica et al, 2016) and activated carbon-methanol (Anyanwu and Ezekwe, 2003, Lemmini and Errougani, 2005, Allouhi et al, 2016 were among the reported adsorption pairs in food products and vaccines storage applications. The AQSOA-FAM-Z02water (Vasta et al, 2012), Silica gel-water (Kubota et al, 2008, Xia et al, 2009, Magnetto et al, 2011, Alahmer et al, 2016 and carbon-ammonia (Critoph et al, 2000) were used in air conditioning applications.…”

Section: Significantmentioning

confidence: 99%

“…Frazzica et al (2016) reported activated carbon-ethanol pair SCP of 95 W/kg and 50 W/kg and COPs of 0.09 to 0.11 for air conditioning and refrigeration cycles, respectively. Bouzeffour and Khelidj (2016) presented results of solar COP of 0.083 to 0.09 for silica gel-water pair, with a global irradiance of 773-837 W/m 2 /day, maximum adsorbent bed temperatures of 95-117°C from total energy received by solar collector of 18 MJ/m 2 /day to provide +5°C to +8°C as evaporator temperatures. Anyanwu and Ezekwe (2003) presented results for activated carbon-methanol adsorption cycle with overall COPs ranging between 0.056-0.093 for the cycle and 0.007-0.015 including the solar systems respectively for evaporator temperatures 1.0-8.5°C.…”

Section: Significantmentioning

confidence: 99%

Performance of Calcium Chloride- Ammonia Adsorption Refrigeration System

John

Kimambo

Nydal

et al. 2021

TJET

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An experimental study on the performance of calcium chloride-ammonia adsorption system is described. A single bed water cooled condenser adsorption refrigerator prototype, which utilises calcium chloride-ammonia pair has been developed and tested in the laboratory. Experiments have been conducted for desorption temperatures of 100 °C with desorption time varying from 1 to 4 hours. An electric tape heater and a timer were used to perform the experiments. The adsorption temperature profile, adsorption rate and prototype performance have been analysed and discussed. The tested heating and desorption temperature of 100 °C and heating and desorption time of 1 to 4 hours was able to create a cooling effect of the cold chamber of the prototype of between -0.8 to 8.3 °C, which is adequate for vaccine storage requirement of 2 to 8 °C. The estimated Coefficient of Performance of the system ranges between 0.025 and 0. 076.

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“…This cooling system performed well, with a coefficient of performance (SCOP) of 0.16. Bouzeffour et al [7] developed and tested a solar refrigeration system with the adsorption process operating with the silicagel-water couple. Their prototype uses a single-glazed flat-plate solar collector.…”

Section: Introductionmentioning

confidence: 99%

Study of the Performance of a Solar Refrigerator Using a Silica Gel-water Combination

Guene,

Tubreoumya,

Tiendrebeogo

et al. 2023

CJAST

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Solar adsorption refrigeration as an environmentally-friendly refrigeration method has attracted a great deal of interest over the world. This technology will therefore benefit developing countries with high solar energy potential. The aim of this work is to contribute to a better understanding of the functioning of the refrigeration systems by adsorption. An experimental survey is conducted on such a prototype using silicagel-water couple constructs by BLM and installed in Ouagadougou (IRSAT) in the eighties. In this study, we measured the overall solar radiation on the collector, ambient temperature and the temperature of the various parts of the system, i.e., the collector, condenser and evaporator. We then used A. Errougani's correlation to estimate the mass of water adsorbed to calculate the amount of cold produced at the evaporator. The observed facts were that the SCOP of this machine varies between 0,091 and 0,138 for an average daily solar radiation ranging from 14,56 MJ and 18,68 MJ. This prototype, despite its old age had an interesting SCOP and testifies an increase of the temperature to the evaporator in relation to the one predicted initially.

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Experimental investigation of a solar adsorption refrigeration system working with silicagel/water pair: A case study for Bou-Ismail solar data

Cited by 30 publications

References 23 publications

Fabrication and thermal conductivity improvement of novel composite adsorbents adding with nanoparticles

Fabrication and thermal conductivity improvement of novel composite adsorbents adding with nanoparticles

Performance of Calcium Chloride- Ammonia Adsorption Refrigeration System

Study of the Performance of a Solar Refrigerator Using a Silica Gel-water Combination

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