R600a refrigerant heat pump equipment to a hospital in
Denmark successfully applied
Denmark, Aarhus University Hospital continues to expand in
recent years, the original heating and air conditioning systems
can not meet demand, the hospital installed a hydrocarbon re-
frigerant chiller has been successfully replace the R22 system,
then install the hydrocarbon heat pump equipment.Two heat
pump units using R600a as a refrigerant, a total of 80kg, the
total heating capacity of 450kW cooling capacity of 325kW, two
run independently under the same framework.
Heat pump installation in the hospital but also for the supply of
energy security guarantees: the entire system is connected with
the hospital's own power generation equipment to ensure a
stable supply, independent of the local power grid system in order
to avoid power outages.
In order to ensure the safety, heat pump units with full closure
design,shaft seal, or semi-welded heat exchangers to avoid flam-
mable hydrocarbon refrigerants. For outdoor installation of equip-
ment parts, using a secondary loop system with a highly efficient
micro-bubble separation to avoid the gas into the equipment res-
ulting in the possibility of burning. In addition, in the case of leaks,
all electrical parts of the equipment will be cut off, and only manu-
ally restart, remote restart function.
The new system meets under the Montreal Protocol of 2000 to
prohibit the use of HCFCs in the newly installed equipment requir-
ements, and the Danish regulations prohibi t the use of the filling
amount of more than 10 kg of HFC equipment. The same time, the
project allowing the hospital to avoid the HFC-high taxes, and Den-
mark in 2003 for the high taxation of HFC refrigerant.
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