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Modeling and simulation of heat and enthalpy recovery wheels

Nóbrega, C.E.L.; Brum, N.C.L. - In: Energy 34 (2009) 12, pp. 2063-2068

The application of heat and enthalpy wheels in HVAC systems has been steadily increasing, powered by the cost reduction associated with the decrease of the thermal load they provide. Heat wheels are usually employed to pre-cool the fresh air stream before it is admitted to the fan coil. When...

Persistent link: https://www.econbiz.de/10011053584

Thermal behavior and performance assessment of a solar adsorption cooling system with finned adsorber

El Fadar, Abdellah - In: Energy 83 (2015) C, pp. 674-684

This paper presents a modeling and optimization investigation of a solar driven adsorption cooling system working with …

Persistent link: https://www.econbiz.de/10011264377

Study on a solar heat driven dual-mode adsorption chiller

Habib, Khairul; Choudhury, Biplab; Chatterjee, Pradip Kumar - In: Energy 63 (2013) C, pp. 133-141

benign adsorption cooling systems. Solar powered adsorption chillers with non-concentrating flat plate or evacuated tube … stage adsorption chiller when the driving source temperature falls below 60 °C. With a cooling water temperature of 30 °C … the adsorption cycle is then needed to exploit the low driving source temperature. A simulation study of a solar thermal …

Persistent link: https://www.econbiz.de/10011054111

Dynamic behaviors of adsorption chiller: Effects of the silica gel grain size and layers

Chakraborty, Anutosh; Saha, Bidyut Baran; Aristov, Yuri I. - In: Energy 78 (2014) C, pp. 304-312

adsorbents should be considered for the design of adsorption heat exchanger for adsorption cooling applications. …This article presents the dynamic behaviour of a single effect two bed adsorption chiller employing adsorbent beds with … adsorption isotherms and kinetics data. Compared with the experimental data of conventional adsorption chiller based on RD silica …

Persistent link: https://www.econbiz.de/10011117555

Optimal working pairs for solar adsorption cooling applications

Allouhi, A.; Kousksou, T.; Jamil, A.; El Rhafiki, T.; … - In: Energy 79 (2015) C, pp. 235-247

This article suggests a detailed comparison of 7 working pairs intended for use in solar adsorption cooling systems …. The performance analysis was based on two indicators: adsorption capacity and solar coefficient of performance. Based on a … appropriate adsorbent as a first step to determine the adsorption capacity. A MATLAB program was developed to solve the system …

Persistent link: https://www.econbiz.de/10011190929

Experimental evaluation of local instantaneous heat transfer characteristics in the combustion chamber of air-cooled direct injection diesel engine

Rakopoulos, C.D.; Mavropoulos, G.C. - In: Energy 33 (2008) 7, pp. 1084-1099

separates the engine transient temperature signals into two parts, namely the long- and the short-term response ones, processed … coefficients in the engine cylinder. Analysis of the experimental results reveals interesting aspects of transient engine heat …

Persistent link: https://www.econbiz.de/10010810046

Improved lumped-capacitance model for heat and mass transfer in adsorbed gas discharge operations

Sphaier, L.A.; Jurumenha, D.S. - In: Energy 44 (2012) 1, pp. 978-985

An improved lumped-capacitance formulation for heat and mass transfer in adsorbed gas discharge operations has been developed. The formulation is obtained by employing the Coupled Integral Equations Approach (CIEA) for reducing one-dimensional transport equations for adsorbed gas storage in a...

Persistent link: https://www.econbiz.de/10010809139

Experimental study of the transient adsorption/desorption characteristics of silica gel particles in fluidized bed

Hamed, Ahmed M.; Abd El Rahman, Walaa R.; El-Emam, S.H. - In: Energy 35 (2010) 6, pp. 2468-2483

Transient adsorption/desorption characteristics of spherical particles of silica gel (about 3mm in diameter) in a …

Persistent link: https://www.econbiz.de/10010810829

Thermodynamic analysis and theoretical study of a continuous operation solar-powered adsorption refrigeration system

Hassan, H.Z.; Mohamad, A.A. - In: Energy 61 (2013) C, pp. 167-178

solar-driven adsorption cooling systems. In the present study, a developed solar-powered adsorption cooling system is … operating cycle of the system is based on adsorption at constant temperature. Both the cooling system operating procedure as … conservation principle and the equilibrium dynamics of the adsorption and desorption processes. The Dubinin–Astakhov adsorption …

Persistent link: https://www.econbiz.de/10011053268

Entropy generation minimization: A practical approach for performance evaluation of temperature cascaded co-generation plants

Myat, Aung; Thu, Kyaw; Kim, Young Deuk; Saha, Bidyut Baran - In: Energy 46 (2012) 1, pp. 493-521

sequentially, i.e., (i) electricity from the micro-turbines, (ii) low pressure steam at 250 °C or about 8–10 bars, (iii) cooling …

Persistent link: https://www.econbiz.de/10011053320