Results 91 to 100 of about 2,721 (226)

The Influence of Piping Thermal Insulation on Indoor Climate and Exergy Consumption Related to Hot Water Floor Heating in Tokyo

open access: yes, 2015
This paper describes results of a numerical simulation and an exergy analysis focusing upon the influence of piping thermal insulation on floor heating in Tokyo. In a case, pipe length is 1m indoor and 4m outdoor, diminishing linear thermal transmittance
I. Takahashi   +3 more
core   +1 more source

Transient exergy analysis for heat conduction: Quantitative guidelines for selecting pseudo vs. fully unsteady-state methods

open access: yesCase Studies in Thermal Engineering
Exergy analysis quantifies where and how useful energy is consumed relative to the environment, providing a practical basis for thermodynamic optimization.
Habin Jo, Masanori Shukuya, Wonjun Choi
doaj   +1 more source

Exergy Analysis of a Domestic Refrigerator

open access: yesJournal of Engineering, 2018
An energy and exergy thermodynamic analysis using EES program was done for a domestic refrigerator working with R-134a using vapor compression refrigeration cycle. The analysis deals with the system component, i.e.
Loauy Abd Al-Azez Mahdi   +2 more
doaj   +1 more source

Thermal and mechanical aspect of entropy-exergy relationship [PDF]

open access: yesInternational Journal of Energy and Environmental Engineering, 2012
The mechanical aspect of entropy-exergy relationship, together with the thermal aspect usually considered, leads to a formulation of physical exergy based on both useful work and useful heat that are the outcomes of available energy of a thermodynamic system with respect to a reservoir.
openaire   +1 more source

Comparative Study on Exergy Efficiency of Solar Photovoltaic/Thermal (PV/T) System

open access: yes, 2011
A brief comparative study is presented regarding different exergy efficiency correlations of solar photovoltaic/thermal (PV/T) system that have been proposed in the literature.
Lan Xiao, Shuang Ying Wu, Feng Hua Guo
core   +1 more source

EXERGY ANALYSIS OF THERMAL POWER PLANT (RTPP)

open access: yesInternational Journal of Research in Engineering and Technology, 2015
The energy supply to the demand narrowing down day by day around the world, the growing demand of the power has made the ower plants of scientific interest, but most of the power plants are designed by the energetic performance criteria based on the first law of thermodynamics only.
openaire   +1 more source

Research Results of Bioenergetics Factors Influence on Crop Production Yields Increase

open access: yes, 2018
The results of a fundamental research is presented confirming two hypotheses concerning the process of a crop harvest forming and transpiration as the two main bio-energetic factors of fertility.
V. A. Grishin   +2 more
core   +2 more sources

Exergy optimisation for cascaded thermal storage [PDF]

open access: yes
Cascaded thermal storage, consisting of multiple Phase Change Materials (PCMs) with different melting temperatures, has been proposed to solve the problem of poor heat transfer caused by unavoidable decrease of temperature differences during heat exchange process. This paper conducts a theoretical study of the overall thermal performance for a cascaded
Tian, Y. (Yuan)   +2 more
openaire  

Numerical Integration of Solar, Electrical and Thermal Exergies of Photovoltaic Modules: A Novel Thermophotovoltaic Model

open access: yes, 2019
Over the years, there have been efforts to understand the thermodynamics of solar cells so that the physics can be better improved. Heat generation in photovoltaic (PV) modules (which contain solar cells for direct electrical energy generation) has been ...
Abeykoon, Chamil; id_orcid   +2 more
core   +2 more sources

Experimental investigation of graphene-based nanofluid enhanced photovoltaic/thermal system: Energy and exergy analysis

open access: yesEnergy Conversion and Management: X
The performance of photovoltaic (PV) modules is significantly influenced by the operating temperature, the higher temperature the lower module efficiency.
Hussain Madhi   +3 more
doaj   +1 more source

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