17 October 2006

Performance test of a carbon dioxide heat pump for combined domestic hot water and floor heating

Japanese companies were the fi rst to
succeed in the commercialisation of
a heat pump for domestic hot water
heating, in which carbon dioxide is
used as a refrigerant. However, no method for testing
these multi-functional heat pumps
has yet been established. In
order to establish a new standard for
measuring annual energy consumption
of multi-functional heat pumps,
they were subjected to several tests
for combined domestic hot water
and fl oor heating.