En god natts sömn och återvunnen energi: Modellering av avloppsvärmeväxling på ett stockholmshotell och spa
Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Relax and sleep (energy) efficiently : Modelling wastewater heat recovery in a Stockholm hotel and spa (English)
As buildings have become more energy efficient, the energy demand for preparation of domestic hot water stands out as an increasing part of the operational cost and carbon footprint of a building. Most of the heat in the water is used for a short time and then discharged to the main sewer line. Clarion Hotel Stockholm is an example of such a building, with many showers, bathtubs and a spa.
The hotel business is growing around the world and its customers demand comfortable stays. A parallel trend is a more environmentally aware tourism and business travel. Hotels show a great potential for energy savings, while still offering comfortable accommodation. In this master's thesis a case study evaluates the possibilities for heat recovery from the wastewater of Clarion Hotel Stockholm. Three types of heat exchangers were modelled in the system dynamic modelling environment STELLA: a horizontal, a vertical and a shower heat exchanger. Recovered heat was used for pre-heating of the incoming water for domestic hot water preparation. The flows of heat through the hotel's tap water and wastewater systems were schematically modelled using system dynamic modelling, which provides a foundation for the development of mathematical models and further research into the area. The first results point to possible reductions of the heating demand for domestic hot water preparation at Clarion Hotel Stockholm.
Place, publisher, year, edition, pages
2015. , 42 p.
wastewater heat recovery, wastewater heat exchanger, domestic hot water, hotel, energy savings, green tourism, system dynamic modelling
IdentifiersURN: urn:nbn:se:kth:diva-173904OAI: oai:DiVA.org:kth-173904DiVA: diva2:855892
Subject / course
Building Services Engineering and Energy
Martinac, Ivo, Prof
Martinac, Ivo, Prof