Operational Optimization of the Geothermal Power Plant
Unterhaching

Πέτρου, Αναστάσιος; Petrou, Anastasios

dc.contributor.author	Πέτρου, Αναστάσιος	el
dc.contributor.author	Petrou, Anastasios	en
dc.date.accessioned	2015-04-27T08:44:08Z
dc.date.available	2015-04-27T08:44:08Z
dc.date.issued	2015-04-27
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/40606
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.11436
dc.rights	Default License
dc.subject	Γεωθερμία	el
dc.subject	Κύκλος καλίνα	el
dc.subject	Πύργοι ψύξης	el
dc.subject	Υπόγεια ψύξη	el
dc.subject	Υπόγειος αγωγός	el
dc.subject	Geothermal energy	en
dc.subject	Kalina cycle	el
dc.subject	Wet cooling towers	el
dc.subject	Underground cooling	el
dc.subject	Buried pipe	el
dc.title	Operational Optimization of the Geothermal Power Plant Unterhaching	en
heal.type	bachelorThesis
heal.classification	Μηχανολογία	el
heal.classification	Ενέργεια	el
heal.language	en
heal.access	free
heal.recordProvider	ntua	el
heal.publicationDate	2014-10-15
heal.abstract	Geothermal energy constitutes one of the most widely approved renewable sources to provide heat or produce electric power. Geothermal brines exist also in the area of Unterhaching in south Germany, where proper industrial facilities have been installed to supply with heat nearby households. Simultaneously, electrical energy is produced through a 5- year operated Kalina cycle power plant that exploits the excess of the geothermal hot fluid. Kalina cycle is considered as an efficient power cycle that uses an ammonia-water mixture as working fluid. The high energy consumptions, required for the operation of the power plant in Unterhaching, prevent it from being more profitable. This thesis is based on analyzing the data acquisition system’s values and on deriving the specific parameters that influence the several efficiencies and power consumptions. The closed-loop indirect cooling system has been investigated, as pumps and fans constitute high energy consumers. Detailed models that simulate the cooling system have been developed, in order to evaluate the proposed technical solutions and confirm the improvement in the power generation process. Underground cooling of the ambient air that enters the cooling towers, through a buried pipe, has been proposed. This idea has been evaluated through the development of a model that simulates the heat transfer between the sub-soil and the air that flows along the pipe. Calculations verified that, through such an installation, the low temperature of the Kalina cycle can be reduced resulting in an increased power generation and constituting the buried pipe a profitable investment.	en
heal.advisorName	Καρέλλας, Σωτήρης	el
heal.committeeMemberName	Καρέλλας, Σωτήρης	el
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Μηχανολόγων Μηχανικών	el
heal.academicPublisherID	ntua
heal.numberOfPages	137 σ.	el
heal.fullTextAvailability	true