Table of Contents
Advertisement
SUMMARY
Hydronic geothermal systems can be used very effectively in new
installations, as well as in many retrofi t applications. Effi cient systems
can be designed for residential, commercial and industrial applications.
To make a system as effi cient as possible, it is important to follow
good design criteria. Some of the factors to consider are listed below:
• An accurate heat loss and heat gain must be calculated to
properly size the system.
• The system must meet the application requirements. In other
words, the design of the system must take into consideration
the type of distribution system and the needs of the customer.
For example, baseboard radiation designed for 180°F [82°C]
water should not be used with 130°F [54°C] water without
careful consideration and design analysis.
• The components of the system must be designed to work
together. The earth loop must be designed to work with the
heat pump; the pumping system must work effectively with the
earth loop and the heat distribution system; and the distribution
system must be chosen to work properly with the water
temperatures available from the heat pump.
• The system must be controlled to operate as effi ciently
as possible. It is important to operate the system to take
variations in the building loads into account. For example,
the heat loss of the building is reduced when the outdoor
temperature climbs, and the temperature of the water
circulated through the distribution system can be lowered,
allowing the heat pumps to operate more effi ciently. It is
possible to integrate the functions of the mechanical systems in
a building.
Bryant Geothermal Heat Pump Systems
Water-to-Water System Design Guide
Part I: System Overview
5
Advertisement
Table of Contents
