During the last years, special attention has been paid to renewable polygeneration technologies, able of simultaneously producing thermal, cooling, electrical energy and desalinated water from seawater. This paper focuses on an innovative polygeneration system driven by renewable energy sources, including the following technologies: hybrid photovoltaic/thermal collectors, concentrating paraboli...

Absorption cooling technologies converting excess heat and renewable resources to energy have shown progress in recent years. In this study, two 400 kW LiBr solution absorption chiller types with series parallel connected are analyzed over a range of parameter values better understand their applicability for different uses. Thermodynamic models the components were constructed validated. The per...

This work applies the second-law analysis of thermodynamics to quantify the exergy destruction of the components of screw liquid chiller, and to identify the potential for each component to contribute to improve the overall energy efficiency of the system. Three screw liquid chiller units were built to demonstrate the feasibility of the model presented herein. Unit A was a 100 RT water-cooled s...

A parametric study has been carried out based on advanced exergy assessment for a parallel double-effect LiBr–water absorption chiller. The method provides the real potential of equipment improvement in system by recognizing avoidable irreversibilities. sensitivity analysis various parts destruction (endogenous avoidable, endogenous unavoidable, exogenous and unavoidable) components overall per...

The optimal use of electrical and fuel energy in a chiller system, like absorption chiller system, is important in achieving economical system operation. The related research work, including the derivation of a thermal model for the system by an integration of component models can be a tedious task, based on the technology today. The numerous assumptions associated with the governing equations ...

Due to finding solutions reduce energy consumption and improve the electricity production efficiency in power cycles, using waste heat of cycles combined generation systems can be a useful approach. Also, by wasted cooling heating demands met. Therefore, this study presents energy, exergy, economic, environmental evaluations new configuration cooling, heating, (CCHP) or tri-generation system wi...

The authors propose a solar cooling system employing a steam-driven triple effect absorption chiller as a new technique for saving CO2 emission in the air conditioning field. The absorption chiller is a cooling machine using thermal energy as a drive source, and it is ideal for utilizing solar heat. In addition, by employing a triple effect absorption chiller of high efficiency, a high energy s...