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Gewählte Master / Diploma Thesis:

Leonard Luca Rager (2017): Potentiale und Grenzen aktiver Abwärmenutzung inklusive Einspeisung in ein Wärmenetz mittels Wärmepumpe - Eine technische und wirtschaftliche Analyse.
Master / Diploma Thesis - Institut für Verfahrens- und Energietechnik (IVET), BOKU-Universität für Bodenkultur, pp 104. UB BOKU obvsg FullText

Data Source: ZID Abstracts
Abstract:
On a global-schale there is a huge amount of waste heat wich is unused and just released in the environment. Simultaneously the energey revolution is on progress and the world is looking for alternative forms of energy. The usage of waste heat, coming from different processes, is able to suppply a future and environmental friendly heat production. This master thesis is concerned with the potential and the limits of heat pumps and their utilization for active wast heat usage. Also the integration to a district heatig grid is discussed. The thesis is part of a bigger project called "BiNe 2+ - Bidirectional integration of buildings with heat producers in district heating grids". from the research and technology program "Future Home2 of the ministry for traffic, innovation and technology. The paper analyses the potential waste heat amount of a supermarket in Lower Austria, which uses two refrigeratiing machines, with 3 kW respectively 10 kW nominal capacity, for cooling his groceries. An application of an 8 kW high temperature heat pump, wich rises the waste heat temperature to 75 °C is simulated. This temperature is enough for an increase of the district heating supply line. The refrigerating machnines got measured with an ultraonic instrument and temperature sensors. Programs like "Excel", "IPSEpro" and "MATLAB" helped to analyze the obtained data. A findig was that the two refrigerating maschines produce an amount of 73,13 MWh wast heat per year, wichs is currently unused. With a heat pump, it would be able to use this wast heat. Furthermore some different refrigerants have been tested. For this application the refrigerant R600a was the most suitable one with a Coefficient of Performance (COP) of 3,77. Even a small supermarket produces a big amount of waste heat, which leads to the assumption that the usage of wast heat can become a more important component of a future an environmental friendly heat production.

Beurteilende(r): Pröll Tobias
1.Mitwirkender: Leitner Andreas
2.Mitwirkender: Wöß David

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