scholarly journals Energy, Exergy, and Emission Analysis on Industrial Air Compressors

2021 ◽  
pp. 1-34
Author(s):  
Farah Nazifa Nourin ◽  
Juan Espindola ◽  
Osama M. Selim ◽  
Ryoichi S. Amano
Keyword(s):  
Exergy Analysis ◽  
Cost Savings ◽  
High Energy ◽  
Emission Analysis ◽  
Industrial Plants ◽  
Energy And Exergy ◽  
Energy And Exergy Analysis ◽  
Overall Performance ◽  
Air Compressors

Abstract Air compressors, a key fluid power technology, play an important role not only in industrial plants but also in office buildings, hospitals, and other types of facilities. The efficient use of the air compressor is crucial to control unnecessary inefficiencies that cause high energy consumption. This study aims to provide energy and exergy analysis on air compressors for different industries. Detailed case studies are also analyzed. The case study focuses on the energy and exergy analysis of the compressed air system of foundry industries. The results indicate that applying the six improvement recommendations yield significant amounts of energy and cost savings as well as significant improvements in the overall performance of the system. The payback periods for different recommendations are economically feasible and worthwhile to use. The suggested improvement methods can provide high costs with a low payback period.

scholarly journals Energy and exergy analysis of ship energy systems – the case study of a chemical tanker

2015 ◽  
Vol 18 (2) ◽  
pp. 82 ◽  
Author(s):  
Francesco Baldi ◽  
Hannes Johnson ◽  
Cecilia Gabrielii ◽  
Karin Andersson
Keyword(s):  
Exergy Analysis ◽  
Energy Systems ◽  
Energy And Exergy ◽  
Energy And Exergy Analysis

Energy and Exergy Analysis on Gasification Processes

2015 ◽  
pp. 199-240
Author(s):  
Edgardo Olivares Gómez ◽  
Renato Cruz Neves ◽  
Elisa Magalhães de Medeiros ◽  
Mylene Cristina Alves Ferreira Rezende
Keyword(s):  
Energy Conversion ◽  
Thermodynamic Analysis ◽  
Chemical Reaction ◽  
Exergy Analysis ◽  
Gasification Process ◽  
Efficiency Assessment ◽  
Energy And Exergy ◽  
Thermochemical Processes ◽  
Energy And Exergy Analysis

In recent years, attention has focused on exergy analysis, a type of thermodynamic analysis which is an important tool for the efficiency assessment and the processes optimization when dealing with energy conversion and, particularly, thermochemical processes such as gasification. Thus, this chapter aims to introduce the fundamental concepts of energy and exergy and describe the energy and exergy evaluation tools, elucidating its importance for calculations applied to gasification processes. A case study was performed to show the proposal of energy and exergy analysis. Therefore, a single global gasification chemical reaction was used to represent the gasification process. This analysis can provide a tool to assess and develop models, simulations, calculations, and to optimize real gasification processes. Information and experiences covered in this chapter help to be put into perspective the technology, research and overcoming of challenges.

Energy and Exergy Analysis on Gasification Processes

2017 ◽  
pp. 1613-1646
Author(s):  
Edgardo Olivares Gómez ◽  
Renato Cruz Neves ◽  
Elisa Magalhães de Medeiros ◽  
Mylene Cristina Alves Ferreira Rezende
Keyword(s):  
Energy Conversion ◽  
Thermodynamic Analysis ◽  
Chemical Reaction ◽  
Exergy Analysis ◽  
Gasification Process ◽  
Efficiency Assessment ◽  
Energy And Exergy ◽  
Thermochemical Processes ◽  
Energy And Exergy Analysis

In recent years, attention has focused on exergy analysis, a type of thermodynamic analysis which is an important tool for the efficiency assessment and the processes optimization when dealing with energy conversion and, particularly, thermochemical processes such as gasification. Thus, this chapter aims to introduce the fundamental concepts of energy and exergy and describe the energy and exergy evaluation tools, elucidating its importance for calculations applied to gasification processes. A case study was performed to show the proposal of energy and exergy analysis. Therefore, a single global gasification chemical reaction was used to represent the gasification process. This analysis can provide a tool to assess and develop models, simulations, calculations, and to optimize real gasification processes. Information and experiences covered in this chapter help to be put into perspective the technology, research and overcoming of challenges.

Review on Energy and Exergy Analysis of Air and Water Based Photovoltaic Thermal (PVT) Collector

2018 ◽  
Vol 9 (3) ◽  
pp. 1366
Author(s):  
Muslizainun Mustapha ◽  
Ahmad Fudholi ◽  
Chan Hoy Yen ◽  
Mohd Hafidz Ruslan ◽  
Kamaruzzaman Sopian
Keyword(s):  
Thermal Energy ◽  
Energy Demand ◽  
Exergy Analysis ◽  
High Energy ◽  
Exergy Efficiency ◽  
Space Heating ◽  
Domestic Water ◽  
Energy And Exergy ◽  
Water Based ◽  
Energy And Exergy Analysis

<p class="AEuroAbstract">In photovoltaic thermal hybrid (PV/T) collectors, the electricity and thermal energy are produce simultaneously. PV/T technology has been proven in previous studies where it could give benefits for high energy demand supplementary. For example, in space heating, domestic water heating and also drying. The PVT collectors can be classified into air-based PVT, water-based PVT and dual-fluid (air+water) PVT collector. In this paper, the analysis of energy and exergy efficiency of PVT collectors are compiled and reviewed. This study has found that generally the energy and exergy efficiency are range from 40%-70% and 5%-20%, respectively.</p>

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