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Session: Parallel Session: Small-capacity systems
Session starts: Friday 23 September, 14:00
Presentation starts: 15:00
Room: Auditorium

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Malick Kane ()

Abstract:
District heating distributes heat and hot water to residential, commercial and public buildings over a large area. In many cities in Europe, the heat distribution system is designed to delivers hot water at a different temperature to meet the different thermal requirements of the customers served. A high-temperature loop delivers water at around 160-200°C and A-low temperature loop at around 90-120°C. For a particular need of steam for example in hospital, the high-temperature (HT) water is flashed into steam at the customer's site by heat exchangers and the low-pressure steam is then distributed. In many cases, there are many others end-use consumers which are connected to the HT heating system to only satisfy the need for low temperature heating and hot water (e.g. below 55°C). For example, for the typical situation of the Mon-Repos Swimming pool of Lausanne, Switzerland, the HT heating system (at around 170°C) operated by the “Services Industriels de Lausanne – SIL”, the Heat & Power utility company, is used for generating low temperature hot water and heating the pool at around 26°C. In this context, the use of ®ENEFCOGENGREEN provided by Eneftech Innovation SA of Nyon, Switzerland and based on ORC micro cogeneration system (producing electricity locally from the heating network at the customer’s site while serving their needs for low temperature heating) can generate substantial benefits and savings. A modular 15KWe power output is installed at the swimming pool in Lausanne, running 7500 hours a year and saving approx 23,000CHF of electricity grid previously purchased from the grid.