Meistarvörn við tækni- og verkfræðideild - Leó Blær Haraldsson

Viability of a district heating system in Fjarðabyggð using waste heat from Alcoa Fjarðaál

  • 16.1.2019, 14:00 - 16:00

Miðvikudaginn 16. janúar kl. 14:00 ver Leó Blær Haraldsson 60 eininga verkefni sitt til meistaraprófs í vélaverkfræði. 

Verkefnið heitir „Viability of a district heating system in Fjarðabyggð using waste heat from Alcoa Fjarðaál” og verður fyrirlesturinn fluttur í stofu M105. Öllum heimill aðgangur.

Leiðbeinendur: Guðrún Sævarsdóttir, dósent, Háskólinn í Reykjavík María S. Guðjónsdóttir, lektor, Háskólinn í Reykjavík Gestur Valgarðsson, ráðgjafaverkfræðingur, Efla

Prófdómari: Páll Valdimarsson, prófessor, Háskólinn í Reykjavík

Abstract

This thesis reports on a study of the viability of using excess energy from the exhaust gases at Alcoa Fjarðaál aluminium plant to provide residential heating and hot water for domestic use in Reyðarfjörður. The findings of the study indicate that such a solution would be technically viable as well as delivering social and environmental benefits to Alcoa Fjarðaál, the residents of Reyðarfjörður and Iceland as a whole. The costs for implementing a heat regeneration system and distribution system are estimated to be 2.467 – 2.667 million ISK fyrir and open loop system implementation or 2.528 – 2.678 million ISK for a closed loop implementation. The Icelandic government currently subsidizes electricity for residential heating where geothermal heating is not available. If the government were to provide seed capital amounting to 5 years' worth of these subsidies, and the residents of Reyðarfjörður paid 80% of what they currently pay for heating, the break even point for either the open or closed loop implementation would be reached in 9-10 years. If the government-provided seed capital amounted to 11-12 years' worth of subsidies, no loans or capital investments would be needed. This thesis discusses several opportunities and a number of options as well as potential risks and challenges. Ultimately, this boils down to an abundance of energy that is not being utilized under circumstances where it could be.