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.%20A%20refrigerant%20absorbs%20heat%20as%20it%20circulates%20through%20roof-mounted%20panels%2C%20and%20vapourises.%20It%20is%20then%20compressed%2C%20raising%20its%20pressure%20and%20temperature.%20The%20high-temperature%20vapour%20passes%20through%20the%20water%20tank%2C%20where%20it%20condenses%20as%20it%20releases%20its%20heat%20to%20the%20water.%20The%20system%20claims%20to%20cut%20hot%20water%20costs%20by%2075%25.&date=2 December 2001)
The hot water service is a heat pump from Quantum Energy (http://www.quantum-energy.com.au/ see 340-T2-S). A refrigerant absorbs heat as it circulates through roof-mounted panels, and vapourises. It is then compressed, raising its pressure and temperature. The high-temperature vapour passes through the water tank, where it condenses as it releases its heat to the water. The system claims to cut hot water costs by 75%. 2 December 2001 Click to enlarge |