-
-
Available Formats
- Options
- Availability
- Priced From ( in USD )
-
Available Formats
-
- Immediate download
- $16.00
- Add to Cart
Customers Who Bought This Also Bought
-
3155 -- T-Method Duct Design, Part II: Calculation Proced...
Priced From $16.00 -
3163 -- A General Heat Transfer Correlation for Condensat...
Priced From $16.00 -
3164 (RP-462) -- A Field Study of Thermal Environments an...
Priced From $16.00 -
3166 -- The HVAC Costs of Increased Fresh Air Ventilation...
Priced From $16.00
About This Item
Full Description
A numerical simulation was performed to study the effect of axial spacing variation between two legs of a U-bend pipe on heat dissipation, used for condenser heat transfer, in a closed-loop water-cooled earth-coupled heat pump. Three problems were studied. The first used a uniform conductivity model, and the second one assumed: a linear relationship of soil conductivity with temperature. By assuming uniform but different average outside pipe surface and earth temperatures, it was found that an increase of 20% in heat transfer, over the base case of pipes touching each other, can be achieved by spacing the pipes about 0.18 m apart. A transient analysis showed increases on the order of 40% over the base case. A spacer design using materials similar to the pipe is suggested to keep a uniform spacing, and it will also help in curbing "thermal leakage" between the two legs of the loop.
Units: Dual