Description

Performance of the ground-coupled heat pump system located in TECH House I at the University of Tennessee has been measured for the 1983-84 cooling and heating seasons . Hourly measure- ments of heat flows, power consumptions, and various ground, space, and system temperatures have been recorded and analyzed to give overall seasonal performance. For the heating season, the performance factor was found to be 2.6, which is higher than a typical air-air system. However, performance factor for the cooling season was determined to be only 1.1, considerably lower than a typical air-air system . Reasons for this low performance in the cooling mode include poor backfilling procedure when the ground coil was buried, soil drying, and possibly too short a ground coil. Also, the heat pump system itself had a low coefficient of perfor- mance for cooling compared to other high-efficiency systems. Future work on this project will involve reinstallation of a longer ground coil with better backfill, the installation of a ground irrigation system, a more efficient heat pump, and eventually the optimization of the ground coil and heat pump system.

Units: Dual

 

Citation: ASHRAE Transactions, 1986, vol. 92, pt. 1A, San Francisco

Product Details

Published:

1986

Number of Pages:

13

File Size:

1 file , 1.3 MB

Product Code(s):

D-SF-86-2945