نتایج جستجو برای: dimensionless exergy loss

تعداد نتایج: 454572  

2015
Tolga Taner Mecit Sivrioglu

A huge amount of energy is consumed during sugar production in the food industry. The large amount of steam used and the power of the turbine power plant are key factors. This makes energy and exergy analysis important in sugar factories. The data given in the following paper are related to input and output information of the paper entitled Energy - exergy analysis and optimisation of a model s...

Hojat Ansarinasab Mahmoud Afshar, Mehdi Mehrpooya,

In this paper, exergy and exergoeconomic analysis is performed on the recently proposed process forthe coproduction of liquefied natural gas (LNG) and natural gas liquids (NGL) based on the mixedfluid cascade (MFC) refrigeration systems, as one of the most important and popular natural gasliquefaction processes. To carry out this analysis, at first, the proposed process is sim...

Journal: :Processes 2023

In this study, the effects of fin tip thickness and root integral rolled spiral finned tube bundles on flow resistance, heat transfer performance exergy destruction were investigated via mathematical simulation. The correlations between resistance fitted with dimensionless numbers. optimized parameters evaluation criteria (PEC) as objective obtained using methods involving computational fluid d...

Journal: :Entropy 2017
Gokmen Demirkaya Ricardo Vasquez Padilla Armando Fontalvo Maree Lake Yee Yan Lim

This paper presents a theoretical investigation of a combined Power and Cooling Cycle that employs an Ammonia-Water mixture. The cycle combines a Rankine and an absorption refrigeration cycle. The Goswami cycle can be used in a wide range of applications including recovering waste heat as a bottoming cycle or generating power from non-conventional sources like solar radiation or geothermal ener...

Journal: :Entropy 2012
Cornelia A. Bulucea Marc A. Rosen Doru A. Nicola Nikos E. Mastorakis Carmen A. Bulucea

Theoretically, the concepts of energy, entropy, exergy and embodied energy are founded in the fields of thermodynamics and physics. Yet, over decades these concepts have been applied in numerous fields of science and engineering, playing a key role in the analysis of processes, systems and devices in which energy transfers and energy transformations occur. The research reported here aims to dem...

2008
Swapnil Dubey

In this communication, a study has been carried out to evaluate the life cycle cost analysis and carbon credit earned by hybrid PV/T solar water heater. The study has been based on thermal, electrical and exergy output of water heater. The solar water heater is installed at Solar Energy Park, IIT Delhi. The annual energy and exergy gain have been evaluated by considering four types of weather c...

Journal: :Entropy 2017
Saleh S. Baakeem Jamel Orfi Shaker Alaqel Hany A. Al-Ansary

In this paper, energy and exergy analysis of typical gas turbines is performed using average hourly temperature and relative humidity for selected Gulf cities located in Saudi Arabia, Kuwait, United Arab Emirates, Oman, Bahrain and Qatar. A typical gas turbine unit of 42 MW is considered in this study. The electricity production, thermal efficiency, fuel consumption differences between the ISO ...

2012
C. M. Beal

Although algal biofuels possess great potential, profitable production is quite challenging. Much of this challenge is rooted in the thermodynamic constraints associated with producing fuels with high energy, low entropy, and high exergy from dispersed materials. In this study, a preliminary thermodynamic analysis is presented that calculates the energy, entropy, and exergy of the intermediate ...

Journal: :Entropy 2018
Gabriel Marques Spanghero Cyro Albuquerque Tiago Lazzaretti Fernandes Arnaldo José Hernandez Carlos Eduardo Keutenedjian Mady

The first and second laws of thermodynamics were applied to the human body in order to evaluate the quality of the energy conversion during muscle activity. Such an implementation represents an important issue in the exergy analysis of the body, because there is a difficulty in the literature in evaluating the performed power in some activities. Hence, to have the performed work as an input in ...

2015
Paul E. Brockway Julia K. Steinberger John R. Barrett Timothy J. Foxon

There are very few useful work and exergy analysis studies for China, and fewer still that consider how the results inform drivers of past and future energy consumption. This is surprising: China is the world’s largest energy consumer, whilst exergy analysis provides a robust thermodynamic framework for analysing the technical efficiency of energy use. In response, we develop three novel sub-an...

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