Monitoring & Performance Analysis of Large Non-domestic Ground Source Heat Pump

Monitoring and Performance Analysis of Large Non-domestic Ground Source Heat Pump Installation

CIBSE Technical Symposium, De Montfort University, Leicester UK
6th and 7th September 2011

Application of GSHP systems to provide heating and cooling for non-domestic buildings is seen as a viable and effective way of reducing carbon emissions and achieving design renewable energy targets. The application of GSHP systems and their optimal design can be improved through use of reliable system design and simulation models. To assess the validity of design models, availability of high quality field data is critical. Many experimental and monitoring studies have been concerned with domestic scale GSHP installations. In this research work a monitoring system has been implemented to collect high quality dataset from functioning GSHP heating and cooling system in a large educational building at De Montfort University. Operational data have been logged for every minute since the system was commissioned and will provide high quality heat transfer and energy data that will be used for GSHP system model development and validation. Preliminary performance analysis has been carried out and this paper describes the GSHP installation and the monitoring system. Operational data collected over the first year is presented along with a detailed analysis of system performance. The daily average COP of Heat Pumps varied between 3 and 6. The seasonal COP of the system was found to be 4.13. When the ground loop circulating pump was taken into consideration the seasonal COP was found to be 3.41. The reasons for performance variation over different periods are discussed.