Although significant ground-loop size reductions were found, the study identified the need for an automated optimization scheme to find the true optimum pond area and ground loop
length, as well as to facilitate the design procedure.
Inputs to the improved ground loop
heat exchanger model are the temperature and mass flow rate of fluid entering the U-tube, in addition to the borehole wall temperature computed from the ground thermal response model.
At first glance, this correlation appears over-simplified because two buildings, for example, could have equivalent annual loads ratios and undisturbed earth temperatures, but have different total ground loop
lengths, and consequently have different maximum/minimum entering heat pump fluid temperatures.
Kavanaugh and Rafferty (1997) suggest a design procedure, which is to size the ground loop
for the heating loads, and size the supplemental heat rejecter for the difference in the cooling load.
Fan Heat penalty computed with 0 ESP Ground Loop
(GLHP) ARI 330 ISO 13256 EWTc 77[degrees]F 77[degrees]F (25[degrees]C) EWTh 32[degrees]F 32[degrees]F (0[degrees]C) EATc(Wb) 80/67[degrees]F 66.
Data collection started in the ground loop
a month before the heat pump was enabled.
The vertical ground loop
consists of a high-density polyethylene (HDPE) U-tube inserted into a vertical borehole (Figure 1a).
Beginning January 2002, the company launched its marketing of the traditional ground loop
The new system, named the Renewable Ground Loop
(ReGL), utilizes various renewable energies (REs) surrounding a building to compose a desirable heat source and sink of a water-source heat pump (WSHP) to attain higher coefficient of performance (COP).
In addition to a leading-class filter, the VPIG100L balun is also fitted with a ground loop
isolater, surge protection and electrostatic discharge protection to support the security of all work teams using the product within their installation projects.
It works by circulating a mixture of water and anti-freeze around a loop of pipe - called a ground loop
- which is buried in the garden.
The Circuit Maker Vault is the structure that serves as the connection point for the ground loop
and the heat pump.