Faculty of Mechanical Engineering
Permanent URI for this communityhttps://repository.ukim.mk/handle/20.500.12188/13
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Item type:Publication, Performance evaluation of micro orc systems for power generation in nearly zero energy buildings (NZEB)(Faculty of mechanical engineering, University of Banja Luka, 2019-05); ; According the Energy Performance of Buildings Directive it is required all new buildings to be nearly zero-energy by the end of 2020. Micro cogeneration systems are considered as one of the system solutions with the highest potential to enable nearly zero energy buildings (nZEB). In this paper is assessed the potential for application of Micro-Organic Rankine Cycle system for power generation in nZEB, where as a heat source is considered solar energy (solar thermal collectors) biomass (pellet boiler), which are also integrated part of the heating system and DHW. Analysis is performed in order to select optimal ORC working fluid for highest thermal efficiency. The solar thermal system, building, heating/cooling and DHW systems are modeled with Transient System Simulation Tool (TRNSYS) and for the meteorological data is used Typical Meteorological Year for Macedonia. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Influence of condensation temperature and fluid properties on the organic rankine cycle efficiency(Faculty of Mechanical Engineering Skopje, 2018); Blazheska, MartinaThe Organic Rankine Cycle (ORC) is becoming a popular choice for the exploitation of limited heat sources, where air and water cycles fail to provide satisfactory results. This paper gives a theoretical overview of the organic rankine cycle and lists a number of its uses, highlighting its application in geothermal reservoirs, most commonly providing geothermal fluids in the liquid state. The advantages and disadvantages of this cycle are analyzed, followed by the criteria for fluid selection. Furthermore, a method for calculating the cycle efficiency of a specific geothermal ORC plant is presented, as well as an analysis of the impact that the condensation temperature and choice of working fluid have on the cycle efficiency