Description

Ground Heat Exchangers (GHE) for residential heat pumps have the advantage of rejecting (extracting) heat to a lower (higher) temperature ambient environment as compared with air source heat pumps. In this paper, the performance of a large diameter, shallow bore GHE is explored as an alternative to traditional, more expensive deep-bore U-tube GHEs. A capacitance-resistance numerical model (CaRM), developed in an earlier work by Zarrella and De Carli (2013), is used to predict the temperature profiles of the heat-carrier fluid from the ground source heat exchanger (GHE). A more detailed simulation of the GHE is performed using a commercial computational fluid dynamics (CFD) solver. Both models are used to predict the performance of a helical GHE installed in a residential home in Davis CA, USA. The predicted results of exit fluid temperature -from both the CaRM and CFD simulations match well with the measurement data from the installed GHE. The verified CaRM model is then used for parametric study of GHE performance over a period of one year.

Citation: 2019 Winter Conference, Atlanta, GA, Conference Papers

Product Details

Published:

2019

Number of Pages:

9

Units of Measure:

Dual

File Size:

1 file , 5.1 MB

Product Code(s):

D-AT-19-C031