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New flat-fan sheets adiabatic absorber for direct air-cooled LiBr/H2O absorption machines: Simulation, parametric study and experimental results

González-Gil, A.; Izquierdo, M.; Marcos, J.D.; Palacios, E. - In: Applied Energy 98 (2012) C, pp. 162-173

A new generation of highly efficient absorbers for direct air-cooled LiBr/H2O absorption machines is presented and … air-cooled single–double-effect absorption machine. Simulation outcomes of that specific absorber were compared with some … experimental results obtained by using the aforementioned absorption machine as testing facility to validate the model. A good …

Persistent link: https://www.econbiz.de/10011040499

Solar refrigeration and cooling

Best, R.; Ortega, N. - In: Renewable Energy 16 (1999) 1, pp. 685-690

In this paper a review of solar cooling and refrigeration technologies is presented. A discussion on the main reasons why these technologies are not presently economically feasible is carried out. and two installations in Mexico are analysed.

Persistent link: https://www.econbiz.de/10010804104

Comparative study of internal storage and external storage absorption cooling systems

Soutullo, S.; San Juan, C.; Heras, M.R. - In: Renewable Energy 36 (2011) 5, pp. 1645-1651

This work presents a comparative study of the performance of absorption cooling systems with internal storage and with … external storage. A full dynamic simulation model including the solar collector field, the absorption heat pump system and the … absorption pump and external storage in a water tank. Many batteries of simulations have been done to evaluate the performance of …

Persistent link: https://www.econbiz.de/10011044428

Solar absorption cooling in Spain: Perspectives and outcomes from the simulation of recent installations

García Casals, Xavier - In: Renewable Energy 31 (2006) 9, pp. 1371-1389

environment and the electricity distribution system. Solar absorption cooling arises as an interesting alternative, which at the … still persist in solar absorption systems, which could make them loose their market potential for the benefit of other solar …

Persistent link: https://www.econbiz.de/10011044910

Comparison study of solar cooling technologies for an institutional building in subtropical Queensland, Australia

Baniyounes, Ali M.; Liu, Gang; Rasul, M.G.; Khan, M.M.K. - In: Renewable and Sustainable Energy Reviews 23 (2013) C, pp. 421-430

paper investigates and compares the performance of two types of solar cooling: solar absorption cooling system and solar … in Gladstone and Rockhampton sites respectively, while the absorption system will achieve a 0.81 and 0.75 of solar …

Persistent link: https://www.econbiz.de/10010665970

Moving beyond the limits of mass transport in liquid absorbent microfilms through the implementation of surface-induced vortices

Bigham, Sajjad; Yu, Dazhi; Chugh, Devesh; Moghaddam, Saeed - In: Energy 65 (2014) C, pp. 621-630

The slow diffusion of an absorbate molecule into an absorbent often makes the absorption process a rate-limiting step … in many applications. In cases involving an absorbate with a high heat of phase change, such as water absorption into a … LiBr (lithium bromide) solution, the absorption rate is further slowed due to significant heating of the absorbent …

Persistent link: https://www.econbiz.de/10010810537

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

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

A system often discussed in the available literature is that of a single-effect lithium bromide chiller and a fixed solar collector. An analysis of published articles showed that prototype trough and evacuated flat plate collectors can efficiently produce liquids hot enough to drive...

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

Experimental verification of the variable effect absorption refrigeration cycle

Xu, Z.Y.; Wang, R.Z. - In: Energy 77 (2014) C, pp. 703-709

A variable effect absorption refrigeration cycle is proposed which can obtain a rising COP (Coefficient of Performance …) versus the rising generation temperature. This novel cycle could be applied for solar absorption cooling efficiently. In this … paper, a 50 kw variable effect (also named as 1.n effect) absorption chiller using LiBr-water as working fluid was designed …

Persistent link: https://www.econbiz.de/10011077724

Experimental assessment of an absorption cooling system operating with the ammonia/lithium nitrate mixture

Hernández-Magallanes, J.A.; Domínguez-Inzunza, L.A.; … - In: Energy 78 (2014) C, pp. 685-692

This paper reports the experimental results of a single effect absorption cooling system of 3 kW of nominal cooling … temperatures to remove the heat produced during the condensation and absorption varied between 18 °C and 36 °C. The results showed …

Persistent link: https://www.econbiz.de/10011117579

Performance Evaluation of Air-Based Heat Rejection Systems

Fugmann, Hannes; Nienborg, Björn; Trommler, Gregor; … - In: Energies 8 (2015) 2, pp. 714-741

On the basis of the Number of Transfer Units (NTU) method a functional relation between electric power for fans/pumps and effectiveness in dry coolers and wet cooling towers is developed. Based on this relation, a graphical presentation method of monitoring and simulation data of heat rejection...

Persistent link: https://www.econbiz.de/10011127938