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Spillvattenvärmeväxlare – Examensarbete
University of Borås, Faculty of Textiles, Engineering and Business.
University of Borås, Faculty of Textiles, Engineering and Business.
2021 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
Wastewater Heat Exchangers – Master thesis (English)
Abstract [sv]

Rapporten behandlar spillvattenvärmeväxlare med exempel på produkter på marknaden, resultat på tidigare installationer, lämplighet av installation med olika vattenförbrukning och ett räkneexempel baserat på en verklig byggnad med bestämd vattenförbrukning, med syftet att sprida kunskap om växlarna.

Informationen har samlats genom möten med leverantörer samt webbinformation, litteraturstudie samt genom både egna beräkningar och kalkyler genomförda av Evertherm på en exempelbyggnad från AB Bostäder som visade intresse för systemet.

Det finns ett antal olika produkter på marknaden. Befintliga exempel har haft varierande effekt och på flera exempel angavs inte vilken växlare som använts. För lönsamhetskalkylerna av AB Bostäders byggnad som har vattenförbrukning på ca 19 000 𝑚3/å𝑟, beräknades energibesparing 391 MWh/år och vinstöverskott 1,1 Mkr med nuvärdesmetoden samt 1,8 Mkr med direktavkastningsmetoden.

Abstract [en]

The report deals with wastewater heat exchangers with examples of products on the market, results on previous installations, suitability of installation with different water consumption and a calculation example based on a real building with a specific water consumption, with the aim of disseminating knowledge about the exchangers.

The information has been collected through meetings with suppliers as well as web information, literature study and through both own calculations and calculations carried out by Evertherm on an example building from AB Bostäder that showed interest in the system.

There are several different products on the market. Existing examples have had varying effects, and in several of the examples, it was not stated which exchanger was used. For the profitability calculations of AB Bostäder's building, which has a water consumption of approximately 19,000 𝑚3/𝑦𝑒𝑎𝑟, energy savings of 391 MWh / year and a net present value, (NPV) SEK 1.1 million was calculated with the present value method and SEK 1.8 million with the direct return method.

Place, publisher, year, edition, pages
2021.
Keywords [sv]
avloppsvärmeväxlare, avlopp, energibesparing, energieffektivisering, energiåtervinning, spillvattenvärmeväxlare, spillvatten, vattenförbrukning, värmeväxlare, värmeåtervinning
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:hb:diva-27452OAI: oai:DiVA.org:hb-27452DiVA, id: diva2:1636685
Supervisors
Examiners
Available from: 2022-02-15 Created: 2022-02-10 Last updated: 2025-09-24Bibliographically approved

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Spillvattenvärmeväxlare – Examensarbete(2912 kB)1467 downloads
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