Thermal Efficiency Optimization of a Ground Source Heat Pump System by Assistant Preheating/Precooling: A Case Study on a Heating-Load Dominated Building

Luo Jin , Zhang Qi , Prieß A, Rohn J (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Journal of Thermal Science Springer Verlag (Germany)

DOI: 10.1007/s11630-022-1619-4

Abstract

Operation strategies of Ground Source Heat Pump System (GSHPS) such as continuous or intermittent approaches have been extensively studied. In this work, a novel strategy was proposed to maximize the energy efficiency of GSHPS. In this approach, the buildings was first air-conditioned by the preheating/precooling mode and the rest thermal load was covered by the heat pump (HP) mode. The system performance can then be optimized by considering the combination of these two operating modes. A case study was made to examine the thermal performance of a GSHPS installed in Nuremberg, Germany. Thermal performance of the HP and the preheating/precooling operating modes was examined. The system was optimized by deploying the assistant preheating/precooling approach and over one-year period monitoring showed that the seasonal Coefficient of Performance (COP) of the GSHPS was 4.12 in winter and 5.01 in summer. These COP values are higher than that of the conventional GSHPS. Thus, this proposed strategy could be an efficient way to improve the thermal performance of GSHPS.

Authors with CRIS profile

Anna Prieß Professur für Angewandte Geologie und Modellierung von Umweltsystemen Joachim Rohn Professur für Angewandte Geologie und Modellierung von Umweltsystemen

Involved external institutions

China University of Geosciences / 中国地质大学 CN China (CN)

How to cite

APA:

Luo Jin, ., Zhang Qi, ., Prieß, A., & Rohn, J. (2022). Thermal Efficiency Optimization of a Ground Source Heat Pump System by Assistant Preheating/Precooling: A Case Study on a Heating-Load Dominated Building. Journal of Thermal Science. https://dx.doi.org/10.1007/s11630-022-1619-4

MLA:

Luo Jin, , et al. "Thermal Efficiency Optimization of a Ground Source Heat Pump System by Assistant Preheating/Precooling: A Case Study on a Heating-Load Dominated Building." Journal of Thermal Science (2022).

BibTeX: Download