Design engineers currently lack means to easily incorporate the influence of underground water flow into the design of vertical-bore heat exchangers (VBHEx). This paper presents the development of a pseudo or “effective†thermal conductivity correlation for analysis of single-bore VBHEx with groundwater flow. Using the solution to the moving line heat source, a dimensionless correlation, containing parameters for Peclet number and porosity, is provided. The resulting adjusted (i.e., effective) thermal conductivity can be used for analysis and is a good first step toward accounting for groundwater flow in a VBHEx.
Citation: ASHRAE Trans. vol. 111, pt. 2, paper no. 4807, p. 258-263
Product Details
- Published:
- 2005
- File Size:
- 1 file , 350 KB
- Product Code(s):
- D-27012
