Cart
0
Product
Products
(empty)
No products
To be determined
Shipping
$0.00
Total
Product successfully added to your shopping cart
Quantity
Total
There are 0 items in your cart.
There is 1 item in your cart.
Total products
Total shipping
To be determined
Total
Sale!
View larger
View larger
ML-11-C034 -- An Analytical Method to Calculate Borehole Fluid Temperatures for Time-scales from Minutes to Decades
New product
ML-11-C034 -- An Analytical Method to Calculate Borehole Fluid Temperatures for Time-scales from Minutes to Decades
Conference Proceeding by ASHRAE, 2011
Johan Claesson, Ph.D.; Saqib Javed, P.E., Student Member ASHRAE
More info
Full Description
Knowledge of borehole exit fluid temperature is required to optimize the design and performance of ground source heat pump systems. The borehole exit fluid temperature depends upon the prescribed heat injection and extraction rates. This paper presents a method to determine the fluid temperature of a single or a multiple borehole heat exchanger for any prescribed heat injection or extraction rate. The fluid temperature, from minutes to decades, is determined using step response functions. An analytical radial solution is used for shorter times. A finite line-source solution is used for longer times. The line-source response function has been reduced to one integral only. The derivative, the weighting function, is given by an explicit formula both for single boreholes and any configuration of vertical boreholes.Citation: ASHRAE Conference Papers, Montreal, QC