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Analyzing the efficiency of a heat pump assisted drain water heat recovery system that uses a vertical inline heat exchanger
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Applied Thermodynamics and Refrigeration. (Uppvärmning och ventilationsteknik)ORCID iD: 0000-0003-3194-1762
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Applied Thermodynamics and Refrigeration.ORCID iD: 0000-0003-3896-2443
2014 (English)In: Sustainable Energy Technologies and Assessments, ISSN 2213-1388, E-ISSN 2213-1396, Vol. 8, 109-119 p.Article in journal (Refereed) Published
Abstract [en]

The purpose of the present study is to accumulate knowledge on how a drain water heat recovery system using a vertical inline heat exchanger and a heat pump performs under different drain water flow profile scenarios. Investigating how the intermittent behavior of the drain water influences the performance for this type of system is important because it gives insight on how the system will perform in a real life situation. The scenarios investigated are two 24. h drain water flow rate schedules and one shorter schedule representing a three minute shower.The results from the present paper add to the knowledge on how this type of heat recovery system performs in a setting similar to a multi-family building and how sizing influences the performance. The investigation shows that a heat recovery system of this type has the possibility to recover a large portion of the available heat if it has been sized to match the drain water profile. Sizing of the heat pump is important for the system performance; sizing of the storage tank is also important but not as critical.

Place, publisher, year, edition, pages
2014. Vol. 8, 109-119 p.
Keyword [en]
Coiled heat exchanger, Drain water heat recovery, Falling film heat exchanger, Heat pump heat recovery
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-148780DOI: 10.1016/j.seta.2014.08.003Scopus ID: 2-s2.0-84907169290OAI: oai:DiVA.org:kth-148780DiVA: diva2:737050
Note

QC 20150317. Updated from accepted to published.

Available from: 2014-08-11 Created: 2014-08-11 Last updated: 2017-12-05Bibliographically approved
In thesis
1. Investigating Different Opportunities to Increase Energy Efficiency in Buildings by Retrofitting Heat Pump Coupled Heat Recovery Systems
Open this publication in new window or tab >>Investigating Different Opportunities to Increase Energy Efficiency in Buildings by Retrofitting Heat Pump Coupled Heat Recovery Systems
2014 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2014. vii, 117 p.
Series
TRITA-REFR, ISSN 1102-0245 ; 14:01
National Category
Energy Engineering
Research subject
Energy Technology
Identifiers
urn:nbn:se:kth:diva-148784 (URN)978-91-7595-214-7 (ISBN)
Public defence
2014-09-05, Kollegiesalen, Brinellvägen 8, KTH, Sockholm, 09:00 (English)
Opponent
Supervisors
Note

QC 20140825

Available from: 2014-08-25 Created: 2014-08-11 Last updated: 2014-08-25Bibliographically approved

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Wallin, JörgenClaesson, Joachim

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