Heat Pump

In: Science

Submitted By sandram
Words 3545
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february 2004 • tec 6 • SuMMary

a N IN trODuct ION tO G rO u N D S O u rc e Heat P uMP SyS teM S chris arkins
This note TEC 6, originally published in February 1999, was reviewed by Chris Arkins in January 2004. This summary page includes recent updates to the topic since publication.

SUMMARY OF

actIONS tOwarDS SuStaINable OutcOMeS
Introduction
Alternative low energy air conditioning solutions are now commonly sought in preference to typical air conditioning systems for both residential and commercial applications. The industry has seen a growing emergence of ground source heat pump (GSHP) installations throughout Australia over the last five years. A broad spectrum of facilities ranging from domestic housing, hospitals, education facilities, commercial offices and civic buildings to name a few, are now realising the environmental benefits offered by GSHP systems over more commonly used air conditioning systems. This summary note provides a brief overview of the previous note and provides an update on changes that have occurred since.

basic Strategies
Heat rejection is fundamental to all air conditioning systems. Typically, unsightly roof mounted air cooled condensers and cooling towers are by far the most commonly used method for rejecting heat from a building. Ground source heat pumps are somewhat different to the norm. Basically GSHP are refrigeration machines that provide heating and cooling by using ground water and the earth as a medium to reject and/or absorb heat and as such do not require air cooled condensers or cooling towers. This is made possible because ground temperatures are stable, remaining relatively constant throughout the year. During summer when space cooling is required, heat is removed from the building and transferred to the ground. In winter the reverse occurs, with heat being removed from the ground and supplied to the…...

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