IIR document
Impact of the ground-source heat pump running time duration on the system efficiency.
Number: pap. ID: 822
Author(s) : SOLDO V., RUSEVLJAN M., GROZDEK M., et al.
Summary
The test system, comprising a ground-source heat pump coupled to a 100 m vertical borehole heat exchanger, which was installed on the premises of the Laboratory of Applied Thermodynamics at the Faculty of Mechanical Engineering and Naval Architecture University of Zagreb is the one of a kind in Croatia. The thermocouple temperature sensors that were located along the borehole heat exchanger from 1.5 to 100 m, contribute to a better interpretation of the thermal processes that occur between the BHE and the ground. The first results show a significant impact of the GSHP running time duration, as well as of the soil local thermal conductivity variation, on the soil temperature distribution along the borehole. The intermittent operation of the GSHP was characterized with the decreasing of its heating capacity at the end of operation period, corresponding to the decreasing of the COP for about 15 to 25% compared to the same parameters at the start of system operation.
Available documents
Format PDF
Pages: 7 p.
Available
Public price
20 €
Member price*
Free
* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).
Details
- Original title: Impact of the ground-source heat pump running time duration on the system efficiency.
- Record ID : 30001796
- Languages: English
- Source: Proceedings of the 23rd IIR International Congress of Refrigeration: Prague, Czech Republic, August 21-26, 2011. Overarching theme: Refrigeration for Sustainable Development.
- Publication date: 2011/08/21
Links
See other articles from the proceedings (569)
See the conference proceedings
Indexing
-
Themes:
Heat pumps techniques;
Energy efficiency, energy savings - Keywords: Ground; Heat pump; Energy efficiency; COP; Heat exchanger
-
Improvements of U-pipe borehole heat exchangers...
- Author(s) : ACUÑA J.
- Date : 2010
- Languages : English
View record
-
Design of buried depth for vertical ground heat...
- Author(s) : YU Z., HU P., XU Y., et al.
- Date : 2009/03
- Languages : Chinese
- Source: HV & AC - vol. 39 - n. 222
- Formats : PDF
View record
-
EFFECT OF SNOW COVER ON GROUND HEAT PUMP PERFOR...
- Author(s) : TARNAWSKI V. R.
- Date : 1989
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 12 - n. 2
- Formats : PDF
View record
-
How to maximise energy efficiency and cost effe...
- Author(s) : KONCAR A.
- Date : 2017/12/06
- Languages : English
- Source: 48th International HVAC&R Congress and Exhibition.
- Formats : PDF
View record
-
Development of numerical model to predict heat ...
- Author(s) : NAM Y., OOKA R.
- Date : 2009/06
- Languages : Japanese
- Source: Transaction of the Society of Heating, Air-conditioning and Sanitary Engineers of Japan - n. 147
View record