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ISSN 2029-7092 online
ISBN 978-609-457-690-4 CD
ISBN 978-609-457-640-9
Energy for Buildings

Vytautas Dagilis, Liutauras Vaitkus

Combined heat pump and water-power plant at Kaunas Lagoon

Conference Information: 9th International Conference on Environmental Engineering, MAY 22-24, 2014 Vilnius, LITHUANIA
Source: ICEE-2011 - International Conference on Environmental Engineering
Book Series: International Conference on Environmental Engineering (ICEE) Selected papers
ISSN: ISSN 2029-7092 online
ISBN: 978-609-457-640-9 / 978-609-457-690-4 CD
Year: 2014
Publisher: Vilnius Gediminas Technical University Press Technika

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Heat pump plants for district heating are one of the renewable energy technique as well as the means to make modern power grid more flexible. The combined heat pump and power plant presented in this work corresponds both of the objectives. High coefficient of performance of the heat pump and low price of the off-peak electricity of the water-power plant ensures low heat price. The reservoir of 20000 m3 is needed for hot water accumulation. Economic analysis revealed that the expected heat price is much lower when compared with the price of modern condensing boilers fuelled by wood chips. This ensures fast payback of investment.

Keywords: heat pump; water power plant; heat accumulation.

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