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An ammonia carbon solar refrigerator for vaccine cooling

Critoph, R.E. - In: Renewable Energy 5 (1994) 1, pp. 502-508

A small solid adsorption solar refrigerator has been built and preliminary testing is underway. The collector is 1.4 m2 in area and contains 17 kg of active carbon. It uses transparent insulation to reduce collector heat losses. The cold box is remote from the collector, being linked to it by a...

Persistent link: https://www.econbiz.de/10010805362

A comparison of the performances of adsorption and resorption refrigeration systems powered by the low grade heat

Wang, L.W.; Bao, H.S.; Wang, R.Z. - In: Renewable Energy 34 (2009) 11, pp. 2373-2379

In order to study the refrigeration performances of the resorption refrigeration technology, the resorption working … satisfy the similar refrigeration requirements with the adsorption working pair of CaCl2–NH3, is studied by simulation and … experiments. In the simulation the mass transfer resistance is not considered for the systems, and the refrigeration performances …

Persistent link: https://www.econbiz.de/10010805389

Thermochemical energy storage and conversion: A-state-of-the-art review of the experimental research under practical conditions

Cot-Gores, Jaume; Castell, Albert; Cabeza, Luisa F. - In: Renewable and Sustainable Energy Reviews 16 (2012) 7, pp. 5207-5224

Thermal energy storage and conversion aims to improve the high inefficiency of the industrial processes and renewable energy systems (supply versus demand). Chemical sorption processes and chemical reactions based on solid–gas systems are a promising way to store and convert thermal energy for...

Persistent link: https://www.econbiz.de/10010664562

Optimization of a solar driven absorption refrigerator in the transient regime

Hamed, Mouna; Fellah, Ali; Ben Brahim, Ammar - In: Applied Energy 92 (2012) C, pp. 714-724

This contribution deals with the theoretical study in dynamic mode of an absorption refrigerator endoreversible model. The system is a cold generating station driven by solar energy. The main elements of the cycle are a refrigerated space, an absorption refrigerator and a solar collector form. A...

Persistent link: https://www.econbiz.de/10010571914

The impact of fouling on performance of a vapor compression refrigeration system with integrated mechanical sub-cooling system

Qureshi, Bilal Ahmed; Zubair, Syed M. - In: Applied Energy 92 (2012) C, pp. 750-762

refrigeration system. …

Persistent link: https://www.econbiz.de/10010572005

Effectiveness–NTU correlation for low temperature PCM encapsulated in spheres

Amin, N.A.M.; Bruno, F.; Belusko, M. - In: Applied Energy 93 (2012) C, pp. 549-555

The applicability of the effectiveness–NTU method for characterising a PCM thermal energy storage system was experimentally investigated. The system consisted of PCM encapsulated in spheres with a liquid heat transfer fluid. Freezing and melting tests have been carried out for a variety of...

Persistent link: https://www.econbiz.de/10010576235

Development of adsorption air-conditioning technology using modified activated carbon – A review

Yeo, T.H.C.; Tan, I.A.W.; Abdullah, M.O. - In: Renewable and Sustainable Energy Reviews 16 (2012) 5, pp. 3355-3363

paper presents an overview of the researches which had been carried out on adsorption refrigeration system with the commonly … used adsorbent and adsorbate working pairs, solar adsorption refrigeration and adsorption technologies in automobile …. Activated carbon has been widely used as the adsorbent in adsorption refrigeration system. However, one of the bottlenecks which …

Persistent link: https://www.econbiz.de/10010577198

Suitability of coupling a solar powered ejection cycle with a vapour compression refrigerating machine

Chesi, Andrea; Ferrara, Giovanni; Ferrari, Lorenzo; … - In: Applied Energy 97 (2012) C, pp. 374-383

The most commonly employed technology for cold production is vapour compression, mainly due to the high efficiency of such devices. However, a major operating issue is the strong dependency of system efficiency and capacity on ambient temperature, which in turn leads to low yearly performance...

Persistent link: https://www.econbiz.de/10010702401

Options for solar-assisted refrigeration—Trough collectors and double-effect chillers

Tierney, M.J. - In: Renewable Energy 32 (2007) 2, pp. 183-199

“break-even” point at a daily average of 50kW refrigeration demand; here the gas consumption was no more favourable than that …

Persistent link: https://www.econbiz.de/10011043820

Experimental and theoretical investigation of an innovative evaporative condenser for residential refrigerator

Nasr, M.M.; Hassan, M. Salah - In: Renewable Energy 34 (2009) 11, pp. 2447-2454

thermal properties at the different points of the refrigeration cycle were measured for typical operating conditions. The …

Persistent link: https://www.econbiz.de/10011044018