Energy and Exergy Analysis of a New Cogeneration Heating System Based on Condensed Waste-Heat Utilization in the Direct Air Cooling Coal-Fired Power Plant

2022 ◽  
Vol 148 (2) ◽  
Author(s):  
Hongsheng Zhang ◽  
Xingang Liu ◽  
Yifeng Liu ◽  
Ruijun Hao ◽  
Chengjun Liu ◽  
...  
Keyword(s):  
Power Plant ◽  
Exergy Analysis ◽  
Waste Heat ◽  
Heating System ◽  
Air Cooling ◽  
Heat Utilization ◽  
Energy And Exergy ◽  
Energy And Exergy Analysis ◽  
Waste Heat Utilization

Absorption chiller waste heat utilization to the desiccant dehumidifier system for enhanced cooling – Energy and exergy analysis

Energy ◽  
2022 ◽  
Vol 239 ◽  
pp. 121847
Author(s):  
Tianxiang Hu ◽  
Yongting Shen ◽  
Trevor Hocksun Kwan ◽  
Gang Pei
Keyword(s):  
Exergy Analysis ◽  
Waste Heat ◽  
Absorption Chiller ◽  
Heat Utilization ◽  
Energy And Exergy ◽  
Energy And Exergy Analysis ◽  
Waste Heat Utilization

Study of new cascade heating system with multi-heat sources based on exhausted steam waste heat utilization in power plant

2018 ◽  
Vol 136 ◽  
pp. 475-483 ◽  
Author(s):  
Yan Li ◽  
Weiqin Wang ◽  
YiFeng Ma ◽  
Wentao Li
Keyword(s):  
Power Plant ◽  
Waste Heat ◽  
Heating System ◽  
Heat Sources ◽  
Heat Utilization ◽  
Waste Heat Utilization

scholarly journals Energy and Exergy Analysis of Different Exhaust Waste Heat Recovery Systems for Natural Gas Engine Based on ORC

2019 ◽  
Author(s):  
Guillermo Valencia ◽  
Armando Fontalvo ◽  
Yulineth Cardenas ◽  
Jorge Duarte ◽  
Cesar Isaza
Keyword(s):  
Natural Gas ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Exergy Analysis ◽  
Waste Heat ◽  
Natural Gas Engine ◽  
Exhaust Waste Heat ◽  
Energy And Exergy ◽  
Energy And Exergy Analysis ◽  
Net Power Output

One way to increase overall natural gas engine efficiency is to transform exhaust waste heat into useful energy by means of a bottoming cycle. Organic Rankine cycle (ORC) is a promising technology to convert medium and low grade waste heat into mechanical power and electricity. This paper presents an energy and exergy analysis of three ORC-Waste heat recovery configurations by using an intermediate thermal oil circuit: Simple ORC (SORC), ORC with Recuperator (RORC) and ORC with Double Pressure (DORC), and Cyclohexane, Toluene and Acetone have been proposed as working fluids. An energy and exergy thermodynamic model is proposed to evaluate each configuration performance, while available exhaust thermal energy variation under different engine loads was determined through an experimentally validated mathematical model. Additionally, the effect of evaportating pressure on net power output , absolute thermal efficiency increase, absolute specific fuel consumption decrease, overall energy conversion efficiency, and component exergy destruction is also investigated. Results evidence an improvement in operational performance for heat recovery through RORC with Toluene at an evaporation pressure of 3.4 MPa, achieving 146.25 kW of net power output, 11.58% of overall conversion efficiency, 28.4% of ORC thermal efficiency, and an specific fuel consumption reduction of 7.67% at a 1482 rpm engine speed, a 120.2 L/min natural gas Flow, 1.784 lambda, and 1758.77 kW mechanical engine power.

Forced-circulation solar water heating system using heat pipe-flat plate collectors: Energy and exergy analysis

Energy ◽  
2019 ◽  
Vol 180 ◽  
pp. 429-443 ◽  
Author(s):  
A. Allouhi ◽  
M. Benzakour Amine ◽  
M.S. Buker ◽  
T. Kousksou ◽  
A. Jamil
Keyword(s):  
Flat Plate ◽  
Heat Pipe ◽  
Exergy Analysis ◽  
Heating System ◽  
Forced Circulation ◽  
Solar Water Heating ◽  
Solar Water ◽  
Energy And Exergy ◽  
Energy And Exergy Analysis ◽  
Solar Water Heating System

On low-grade waste heat utilization from a supercritical steam power plant using an ORC-bottoming cycle coupled with two sources of heat

2017 ◽  
Vol 146 ◽  
pp. 158-173 ◽  
Author(s):  
Paweł Ziółkowski ◽  
Tomasz Kowalczyk ◽  
Sebastian Kornet ◽  
Janusz Badur
Keyword(s):  
Power Plant ◽  
Waste Heat ◽  
Low Grade ◽  
Steam Power ◽  
Steam Power Plant ◽  
Heat Utilization ◽  
Waste Heat Utilization
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