Browsing by Author "Tuzcu, H."

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Citation - Scopus: 1
Exergetic performance analysis and comparison of various building heating options
(IEEE Computer Society help@computer.org, 2014) H. Tuzcu; Huseyin Gunerhan; A. Hepbasli; Hepbasli, A.; Gunerhan, H.; Tuzcu, H.
Heating cooling and lighting appliances in buildings account for more than one third of the world's primary energy demand. Therefore they are considered one of the main parts of the energy consumption in buildings. This study deals with energy/exergy and sustainability performance comparison of a building heating energy system from the primary energy production to the building envelope. A four story building located in Eskisehir Turkey is considered for the analysis. The indoor and outdoor air temperatures of the building are 22°C and -12°C respectively. For heating applications three options are studied namely (i) standard boiler (ii) condensing boiler and (iii) ground heat pump water-water as driven by renewable and nonrenewable energy sources. Energy and exergy analysis methods which are based on the lowex approach are performed to evaluate their performances and compare them through energy and exergy efficiencies and sustainability index. Energy and exergy flows are also studied and illustrated accordingly to have an insight into for possible improvements in the system components. Also the energetic and exergetic renewability ratios are employed here along with sustainability index. For a building with a net area of 2430.4 m2 the total exergy efficiencies of the considered heating systems are 25.3% 6.1% and 6.9% respectively for three cases. The sustainability index for three cases found as 1.196 1.236 and 1.274 respectively. © 2014 Asian Institute of Technology. © 2014 Elsevier B.V. All rights reserved.
Renewable energy effect in a building heating system
(CRC Press/Balkema Pub.NL@taylorandfrancis.com, 2015) H. Tuzcu; Huseyin Gunerhan; A. Hepbasli; Hepbasli, A.; Gunerhan, H.; Tuzcu, H.; W.-P. Sung , J.C.M. Kao
This study deals with performance of net zero energy building and comparable energy/ exergy analyses. Heating energy system is investigated from the primary energy production to the building envelope. As a building a two story detached house located in İzmir Turkey is considered for the analysis. Energy and exergy analysis methods which are based on the lowex (low exergy) method are performed to evaluate their energy performances and compare them through energy and exergy efficiencies. For heating applications three options are studied namely (i) standard boiler (ii) condensing boiler (iii) solar collector as driven by renewable and non-renewable energy sources to determine energy consumption of the detached house. For the detached house with a net area of 526.8 m2 solar collectors provide almost 31% more primary energy savings than standard boiler. The total exergy efficiencies of considered heating systems also are 3.4% 4.0% and 25.7% respectively for three cases. © 2020 Elsevier B.V. All rights reserved.