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Optimum tilt angle for flat plate collectors all over the World – A declination dependence formula and comparisons of three solar radiation models
Abstract The paper presents a theoretical study on the optimum tilt angle for flat plate collectors at different geographical locations and different time moments over a year. The solar radiationExpand
The Influence of Swirl Angle on the Irreversibilities in Turbulent Diffusion Flames
The objective of this paper is to investigate the volumetric irreversibilities of turbulent swirling diffusion flames. The theoretical background of analysis relies on the local transport exergyExpand
Second Law Analysis of Diffusion Flames
The objective of this paper is to investigate the sources of volumetric irreversibilities in both laminar and turbulent diffusion flames. The theoretical background of analysis relies on the localExpand
Effect of Greenhouse Orientation with Respect to E-W Axis on its Required Heating and Cooling Loads
Abstract The paper presents a comparison between two different orientations of a vegetable greenhouse with respect to East-West axis in Romania. The solar irradiance received by the greenhouse isExpand
EXERGY ANALYSIS AND REFRIGERANT EFFECT ON THE OPERATION AND PERFORMANCE LIMITS OF A ONE STAGE VAPOR COMPRESSION REFRIGERATION SYSTEM
This paper deals with a comparative analysis of the refrigerant impact on the operation and performances of a one stage vapor compression refrigeration system. Parameters and factors affecting theExpand
Influence of heat flux and Reynolds number on the entropy generation for different types of nanofluids in a hexagon microchannel heat sink
Abstract Based on the Second Law of Thermodynamics, the entropy generation is studied for laminar forced convection flow of different nanoparticles (Al2O3, CuO and SiO2) mixed with water through aExpand
Mathematical links between optimum solar collector tilts in isotropic sky for intercepting maximum solar irradiance
Abstract The paper presents a mathematical modeling of the optimum tilt for solar collectors for intercepting maximum solar irradiance (power density), at different geographical locations, periods ofExpand
Optimization and Entropy Production: Application to Carnot-Like Refrigeration Machines
TLDR
This paper proposes a general model for study and optimization of thermal machines with two heat reservoirs applied to a Carnot-like refrigerator, with non-linear heat transfer laws and internal and external irreversibility, and shows that the nature of the heat transfer Laws affects the optimum values of system parameters for obtaining maximum performances and also their magnitude. Expand
Thermal Analysis of a Solar Powered Absorption Cooling System with Fully Mixed Thermal Storage at Startup
A simple effect one stage ammonia-water absorption cooling system fueled by solar energy is analyzed. The considered system is composed by a parabolic trough collector concentrating solar energy intoExpand
Numerical investigation of heat transfer enhancement using various nanofluids in hexagonal microchannel heat sink
Abstract This paper describes the numerical modelling of heat transfer and fluid flow characteristics for various types of nanofluids and water passing through a microchannel heat sink (MCHS). TheExpand
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