<?xml version="1.0" encoding="utf-8"?><metadata xmlns:dc="http://purl.org/dc/elements/1.1/"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dcterms="http://purl.org/dc/terms/"><dc:title xml:lang="en">geothermal heat pumps</dc:title><dc:identifier>http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31377306</dc:identifier><dc:language>en</dc:language><dc:publisher xml:lang="en">Getty Institute</dc:publisher><dcterms:created>2026-03-30 20:41:46</dcterms:created><dcterms:isPartOf xsi:type="dcterms:URI">http://AATesaurus.cultura.gencat.cat/aat/getty_en</dcterms:isPartOf><dcterms:isPartOf xml:lang="en">Tesaurus d&apos;Art i Arquitectura</dcterms:isPartOf><dc:format>text/html</dc:format> <dcterms:alternative xml:lang="en">GHPs</dcterms:alternative> <dcterms:alternative xml:lang="en">GSHPs</dcterms:alternative> <dcterms:alternative xml:lang="en">geothermal heat pump</dcterms:alternative> <dcterms:alternative xml:lang="en">ground source heat pumps</dcterms:alternative> <dcterms:alternative xml:lang="en">ground-source heat pumps</dcterms:alternative> <dcterms:alternative xml:lang="en">pumps, geothermal heat</dcterms:alternative> <dc:description xml:lang="en"><![CDATA[ A geothermal heat pump (also known as a ground-source heat pump) transfers energy from the ground as a component of heating, cooling, and water-heating systems. A collector hose filled with a carrier fluid (water or a combination of water and antifreeze) is installed in a borehole which is drilled into a geothermal aquifer. In colder months, this circulating carrier fluid absorbs heat from the surrounding bedrock, which is then extracted by the heat pump for use in space-heating via piping connected to the heat exchanger. During the warmer months the process is reversed: heat from the air is transferred to the heat exchanger and into the fluid. As it moves through the pipes, the heat is dispersed to the rocks, soil, and groundwater. ]]></dc:description></metadata>