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Utvärdering av ett värmepumpsystems prestanda till en HWC-tvättmaskin: Med fokus på fläktvarvtal och köldmedieflöde
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences.
2014 (Swedish)Independent thesis Basic level (university diploma), 180 HE creditsStudent thesisAlternative title
Evaluation of a heat pump performance to a HWC-washing machine : Focus on fan speed and refrigerant flow rate (English)
Abstract [en]

This report was performed in order to evaluate a new technological measure and focuses generally on a heat pump system to a HWC-washing machine. The client is Asko Appliances AB, a company well known for its environmentally friendly products. The goal of this study was to improve the energy efficiency of a washing machine by combining a heat pump device to the heater of the wash water, in order to reduce the energy consumed for heating the water. Besides reducing the energy consumption in heating the water, the washing machine was required to meet low noise and short operating time specifications. For that purpose, nine trials in three test series have been carried out. In each of those trials, airflow has been combined with the refrigerant flow and the energy consumption measured. The comparison of the results shows that the energy efficiency is the highest when the flow rates of both the air and the refrigerant are low. Further, the energy consumption in terms of electricity used in heating the water has been lowered by 71% in comparison to a refernce washing machine using no heat pump device. The paper also discusses possible improvement actions related to this technological mesure. This technological measure can be applied on HWC-washing machines and can replace conventional electrically heated washing machines.

Place, publisher, year, edition, pages
2014. , 24 p.
Keyword [sv]
värmepump, effektivisering, förångare, entropi
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:kau:diva-31648OAI: oai:DiVA.org:kau-31648DiVA: diva2:703265
External cooperation
Asko Appliances AB
Subject / course
Energy and Environmental Engineering, Bachelor of Science
Educational program
Bachelor of Science in Enviromental and Energy Engineering, 180 hp
Supervisors
Examiners
Available from: 2014-03-14 Created: 2014-03-06 Last updated: 2014-03-14Bibliographically approved

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CiteExportLink to record
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