Browsing by Author "Palmero-Marrero, Ana I."

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Citation - WoS: 5
Citation - Scopus: 6
Application of net zero extended exergy buildings concept for sustainable buildings analysis
(ELSEVIER, 2023) Emin Acikkalp; Arif Hepbasli; Ana I. Palmero-Marrero; David Borge-Diez; Açikkalp, Emin; Borge-Diez, David; Hepbasli, Arif; Palmero-Marrero, Ana I.
Different Zero-Energy Building (ZEB)-related definitions considering its four main dimensions such as zero energy zero carbon zero exergy and zero cost have been proposed by different investigators. Among these exergy-based definitions are relatively low in numbers. In this regard the main objective of this present study is to propose net zero extended exergy buildings as a new concept which combines extended exergy and net zero exergy building concepts and is a measure of the exergetic footprint. This concept setups a balance between extended exergy accounting of electricity from the grid and electricity generated in building. The proposed methodology is applied to a building available in the literature for heating and cooling seasons. Results show that 450Wp peak power and 44.181 kWh electrical energy must be obtained for meeting the electricity demand of the building. Another novel result is that the extended exergy accounting of the electricity generated by PV panels is bigger than the extended exergy of the electricity taken from the gird meaning that exergetic footprint of the electricity generated by PV panels is bigger. However this result must be interpreted for the whole life time of the system.
Citation - WoS: 22
Citation - Scopus: 22
Dynamic performance and sustainability assessment of a PV driven Carnot battery
(Elsevier Ltd, 2023) Demet Canpolat Tosun; Emin Açıkkalp; Onder Altuntas; A. Hepbasli; Ana I. Palmero-Marrero; David Borge-Diez; Altuntas, Onder; Açıkkalp, Emin; Tosun, Demet Canpolat; Borge-Diez, David; Hepbasli, Arif; Palmero-Marrero, Ana I.; Canpolat Tosun, Demet
This study investigates the performance of a Carnot Battery and performs a thermodynamic-based sustainability analysis using different methods. Carnot batteries have two different operational processes charge and discharge. Electricity generated from a renewable source is used to operate a heat pump and the heat rejected by the heat pump is stored in the battery which is then used to generate electricity in the Organic Rankine Cycle (ORC) at night and called as the discharge process. Climatic data from the city of Izmir the third largest city by population in Turkey has been chosen for the dynamic analysis. Exergy-based sustainability and thermo-ecological cost analyses are performed. The results show that the maximum Coefficient of Performance (COP) of the heat pump system is 4.5 the exergy efficiency can reach 0.78 and its the maximum sustainability index is 4.5. For the discharge process energy efficiency of the ORC is 0.118 while the exergy efficiency is around 0.49 with a sustainability value of about 2.0. © 2023 Elsevier B.V. All rights reserved.