Next Article in Journal
Floating Membrane Bioreactors with High Gas Hold-Up for Syngas-to-Biomethane Conversion
Next Article in Special Issue
Energy Performance Assessment According to Data Acquisition Levels of Existing Buildings
Previous Article in Journal
Effects of Different Storage Techniques on Round-Baled Orchard-Pruning Residues
Previous Article in Special Issue
Optimization of a New Phase Change Material Integrated Photovoltaic/Thermal Panel with The Active Cooling Technique Using Taguchi Method
Article Menu
Issue 6 (March-2) cover image

Export Article

Open AccessArticle

Fixing Efficiency Values by Unfixing Compressor Speed: Dynamic Test Method for Heat Pumps

1
BAM Bundesanstalt für Materialforschung und -Prüfung, 12205 Berlin, Germany
2
AIT Austrian Institute of Technology GmbH, Vienna 1210, Austria
3
Fraunhofer Institute for Solar Energy Systems ISE, 79110 Freiburg, Germany
*
Author to whom correspondence should be addressed.
Current address: Unter den Eichen 87, 12205 Berlin, Germany.
Energies 2019, 12(6), 1045; https://doi.org/10.3390/en12061045
Received: 28 February 2019 / Revised: 13 March 2019 / Accepted: 14 March 2019 / Published: 18 March 2019
(This article belongs to the Special Issue Energy Efficiency in Plants and Buildings)
  |  
PDF [1293 KB, uploaded 18 March 2019]
  |  

Abstract

The growing market penetration of heat pumps indicates the need for a performance test method that better reflects the dynamic behavior of heat pumps. In this contribution, we developed and implemented a dynamic test method for the evaluation of the seasonal performance of heat pumps by means of laboratory testing. Current standards force the heat pump control inactive by fixing the compressor speed. In contrast, during dynamic testing, the compressor runs unfixed while the heat pump is subjected to a temperature profile. The profile consists of the different outdoor temperatures of a typical heating season based on the average European climate and also includes temperature changes to reflect the dynamic behavior of the heat pump. The seasonal performance can be directly obtained from the measured heating energy and electricity consumption making subsequent data interpolation and recalculation with correction factors obsolete. The method delivers results with high precision and high reproducibility and could be an appropriate method for a fair rating of heat pumps. View Full-Text
Keywords: heat pump; dynamic test method; seasonal performance factor; variable frequency drive; field approximation; energy label; air source heat pump; ground source heat pump heat pump; dynamic test method; seasonal performance factor; variable frequency drive; field approximation; energy label; air source heat pump; ground source heat pump
Figures

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Palkowski, C.; Zottl, A.; Malenkovic, I.; Simo, A. Fixing Efficiency Values by Unfixing Compressor Speed: Dynamic Test Method for Heat Pumps. Energies 2019, 12, 1045.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top