Performance evaluation of date-seed activated carbon as adsorbent in adsorption refrigeration system

Abdulkadir, M.S.; Kulla, D.M.; Pam, G.Y.

doi:10.4314/njbas.v30i1.3

Cited by 4 publications

(7 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Journal of Power and Energy Engineering The energy required by the adsorbent/adsorbate equilibrium test (adsorption cooling system) and the COP of the system were estimated as 1913.57 kJ/h and 0.39 respectively. This closely agreed with the results obtained by [1], the difference being due to the fact that the mass of the refrigerant slightly differs.…”

Section: Resultssupporting

confidence: 92%

“…Sun radiates its energy at the rate of about 3.8 × 10 23 kW per second [1]. Solar energy, being the most promising among all the renewable energy sources is transmitted radially as electromagnetic radiation.…”

Section: Solar Thermal Heatingmentioning

confidence: 99%

“…Serious concerns for the environment have focused almost everyone's attention on the future of our planet. From retailers to manufacturers, small scale to large scale industries, domestic to commercial buildings, and the public to private organizations, the race is on towards optimizing energy usage and greening the environment and the economy in general [1].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Application of Renewable Energy Options—The Role of Solar Adsorption Cooling Technology

Abdulkadir¹,

Kulla²,

Kaisan³

et al. 2022

JPEE

View full text Add to dashboard Cite

High energy requirement of vapor compression cooling systems in addition to harmful refrigerants further necessitates the increasing need for more reliable, flexible, environmentally friendly, and cost-efficient cooling systems options. Adsorption cooling technology could be a better option in terms of huge energy saving potential, Carbon emission reduction, flexibility, and waste heat utilization. There are, however, some setbacks that hindered adsorption cooling technology from real mass production and commercialization. This work seeks to study, evaluate and compare the energy requirement and coefficient of performance of solar-powered adsorption cooling system (as an application of renewable energy) in relation to vapor compression system. Adsorbate/adsorbent equilibrium test (using a test rig) was used to predict the performance of thermal driven adsorption cooling system using methanol/activated carbon (as adsorbate/adsorbent pair) in relation to similar data obtained from laboratory vapor compression refrigeration test rig (same mass of refrigerant). For the adsorption cooling system and vapor compression system, the energy requirements were found to be 1913.57 kJ and 8932.02 kJ while the coefficient of performance (COP)s were found to be 0.39 and 1.2 respectively. Presumably, the adsorption cooling system has an energy requirement that could be powered by direct solar thermal heating using a flat plate collector, however, the COP is relatively lower indicating lower cooling capacity, and hence takes a longer period of time to overcome the same cooling load as vapor compression system. It is recommended among other things that research should focus on developing better adsorbate/adsorbent pairs for an increased adsorption/desorption time.

show abstract

Section: Resultssupporting

confidence: 92%

Section: Solar Thermal Heatingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Application of Renewable Energy Options—The Role of Solar Adsorption Cooling Technology

Abdulkadir¹,

Kulla²,

Kaisan³

et al. 2022

JPEE

View full text Add to dashboard Cite

show abstract

“…4 An adsorption refrigeration system is a thermally powered refrigerator using solid adsorbent beds to absorb and desorb a refrigerant to provide a cooling effect. 5 These solid adsorbent beds react to changes in the adsorbent's temperature by adsorbing and desorbing a refrigerant vapour. 6 The selection of an adsorbent-adsorbate combination is critical in determining the effectiveness of adsorption refrigeration, according to Omisanya.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simulation of the performance of continuous solar-powered adsorption refrigeration system for optimal use in Zaria, Nigeria

Sowunmi

Folayan

Anafi

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

Cooling without electricity is the reason for solar adorption refrigeration systems. The epileptic power supply, especially in developing countries, makes solar refrigeration a very attractive option. This is coupled with the abundance of solar energy, making it a favourable alternative power source amongst other power mixes. This article introduces a solar adsorption refrigerator that continually generates cooling using solar energy as a standalone. Thus, this study aims to simulate and analyse the feasibility of refrigeration from a system that uses a blend of zeolite-based adsorbents and water (H2O) as adsorbate pairs via four solar concentrating collectors, two for adsorption and two for desorption using TRNSYS 16.0 simulation software. Unlike the conventional refrigeration system, the compressor was replaced with a solar concentrating collector while other components, such as the condenser, evaporator, and throttling valves, remained. The findings demonstrate that the technology delivered continuous cooling, and due to the comparatively intense beam radiation during the middle of the day, the cooling rate increased.

show abstract

Removal of Divalent Copper Ions from Aqueous Solution using <i>Sorghum bicolor</i> L. Stem Waste as an Effective Adsorbent

Annisa,

Fahruddin,

Taba

2024

J. Ecol. Eng.

View full text Add to dashboard Cite

Sorghum stem (Sorghum bicolor L.) is a plant that has not been maximally utilized. But sorghum stems contain high cellulose. The hydroxyl (OH-) and carboxyl (-COOH) groups on cellulose can bind heavy metals; therefore, sorghum stems have the opportunity to be used as an adsorbent to absorb heavy metals, especially Cu(II) metal, which can pollute the environment. Therefore, this research was conducted to determine the optimum pH, contact time, and the adsorption capacity of Cu(II) using HNO 3 modified sorghum stem adsorbent. The stages of the research included the preparation of sorghum stem adsorbent, modification of adsorbent with HNO 3 , determination of optimum pH, optimum contact time and adsorption capacity of Cu(II) metal. Furthermore, the functional groups of the adsorbent before and after modification were determined by FTIR. SEM-EDS to assess the morphological structure and chemical components contained in the adsorbent. After the research, the optimum pH of Cu(II) metal adsorption was pH 6, and the adsorption power was 99.88%. The optimum contact time is 10 minutes. The percent removal of Cu(II) metal with concentrations of 10, 30, 50, and 100 ppm were 79.96; 79.90; 56.40 and 54.04%, respectively. Adsorption of Cu(II) metal using HNO 3 modified sorghum stem adsorbent followed the Freundlich isotherm pattern compared to Langmuir with R 2 = 0.9039. It is concluded that activated sorghum stem can be used as Cu(II) metal adsorbent.

show abstract

Performance evaluation of date-seed activated carbon as adsorbent in adsorption refrigeration system

Cited by 4 publications

References 5 publications

Application of Renewable Energy Options—The Role of Solar Adsorption Cooling Technology

Application of Renewable Energy Options—The Role of Solar Adsorption Cooling Technology

Simulation of the performance of continuous solar-powered adsorption refrigeration system for optimal use in Zaria, Nigeria

Removal of Divalent Copper Ions from Aqueous Solution using <i>Sorghum bicolor</i> L. Stem Waste as an Effective Adsorbent

Contact Info

Product

Resources

About