The solidification process in encapsulated ice thermal energy storage (EITES) system is simulated for water-filled capsules while neglecting storage tank wall effects and heat penetration. Energy and exergy efficiencies were calculated while varying capsule shape, inlet Heat Transfer Fluid (HTF)...

In this paper, the performance of wind energy system is assessed thermodynamically, from resource and technology perspectives. The thermodynamic characteristics of wind through energy and exergy analyses are considered and both energetic and exergetic efficiencies are studied. Wind speed is...

A linear optimization model and a multi-attribute value model have been introduced. These models have been used in order to estimate the long-term energy, economy and environment interactions for Turkey. The results of these models are presented in tabular summaries.

The present study deals with an analysis of unsteady heat-transfer during forced-air cooling of figs as spherical fruits. The heat-transfer mechanism in the cooling of fruits is quite complex. Conduction, convection, radiation, and internal heat generation take place. Moisture loss is coupled...

A new solar dryer, which consists of a solar air heater and a drying chamber, was developed and used for drying agricultural products. The present drying system was successfully tested using sultana grapes, green beans, sweet peppers, and chilli peppers. Traditional sun-drying experiments were...

A comprehensive thermodynamic modeling and optimization is reported of a polygeneration energy system for the simultaneous production of heating, cooling, electricity and hot water from a common energy source. This polygeneration system is composed of four major parts: gas turbine (GT) cycle,...

A new multi-generation system based on a biomass combustor, an organic Rankine cycle (ORC), an absorption chiller and a proton exchange membrane electrolyzer to produce hydrogen, and a domestic water heater for hot water production, is proposed and thermodynamically assessed. Exergy analysis is...

A low-temperature heat driven heat engine is proposed as a cost-effective system for power and heat production for small scale applications. The external heat source allows flexibility in the design; the system may be coupled with various available renewable sources including...

A comprehensive exergy, exergoeconomic and environmental impact analysis and optimization is reported of several combined cycle power plants (CCPPs). In the first part, thermodynamic analyses based on energy and exergy of the CCPPs are performed, and the effect of supplementary firing on the...

This paper presents energy and exergy assessments of a new integrated system with different psychrometric processes for HVAC&R applications. The mass, energy, entropy and exergy balance equations for all system components and processes are developed for analysis and performance assessment...