7. Conclusions
In the present study, a DX-SAHP system was designed
and fabricated, which consists of a refrigerantfilled
collector array, a variable speed compressor and
a radiant floor heating unit. It can offer multi-fold functions
for residential uses, i.e. space heating in winter,
0:28 1:58 3:28 4:58 6:28 7:58
0
15
30
45
60
75
90
June 30-31, 2004
space-cooling-only mode
fcomp = 30 Hz
Teva,i
Teva,o
Trad,o
Trad,i
Temperature,°C
Time, hh:mm
Fig. 9. Variations of inlet/outlet refrigerant temperatures of
radiator and evaporator with time.