23 September 2011

FIELD TEST OF NEWLY DEVELOPED TURBO HEAT PUMP FOR HOT WATER


This paper reports field test of a newly developed turbo heat pump for hot
water of 80 degrees Celsius in an actual factory in order to achieve reduction of CO2
emissions and to enhance energy saving. The heat pump is characterized by high efficiency
and large amount of heat output, which approximately equals steam of 1,000 kg / hour, using
a state-of-the-art turbo compressor. Low temperature heat source is required for the heat
pump in order to achieve high efficiency. As a result of the field test, it was confirmed that the
performance of the heat pump was nearly equal to that of design. The dynamic
characteristics, such as fluctuation of the output water temperature and the time lapse from
switch-on to full-load, were suitable for application in the factory. Primary energy
consumption and CO2 emission of the heat pump were calculated on the basis of the present
results. Also, they were improved to match with those of the boilers.