PENGARUH TEMPERATUR UDARA TERHADAP UNJUK KERJA UNIT DESALINASI SURYA BERBASIS POMPA KALOR DENGAN MENGGUNAKAN PROSES HUMIDIFIKASI- DEHUMIDIFIKASI
Abstract: This research
was conducted to investigate the
effect of air temperature and the
effect of the
use of double-pass
flat plate solar
air heater with
two glass covers on
the performance of
solar desalination unit
based on heat
pump using humidification and
dehumidification processes. This
unit consists of a heat pump,
humidifier, dehumidifier and
double-pass flat plate
solar air heater with
two glass covers.
This research was
conducted in the
indoor experiment. Solar energy
generated from solar
simulator using halogen lamps. Intensity
of solar radiation
was varied at
828 W/m², 924
W/m², 1014 W/m², and 1120 W/m²,
so the resulting air temperature entering the humidifier of 60°C,
63°C, 68°C and
71°C respectively. For
desalination unit without solar
collector, inlet air
temperature of humidifier
was 37°C. The
constant parameters were compressor
rotation of 1,200
rpm, the temperature
of seawater at 45°C, the
volumetric flow rate
of sea water
of 300 l/h,
and seawater in the
desalination unit was
re-circulated. The results
of the research show
that the volume
of fresh water
production increases with increasing temperature
of the air
entering the humidifier
on this solar desalination unit.
Average fresh water
production rate of
solar desalination unit at air
temperature entering humidifier 37oC, 60oC, 63oC,
68oC and 71oC was
18 l/day, 24.48
l/day, 26.64 l/day,
29.52 l/day and
35.64 l/day, respectively. The
use of double-pass flat plate solar air heater with two glass covers could
increase the production of fresh water for the variation of solar radiation intensity
828 W/m2, 924
W/m², 1014 W/m²,
1120 W/m² by
36% , 48%, 64% and 76%,
respectively.
Keywords: Desalination, Heat
pump Humidification, Dehumidication, Double-pass flat plate solar, air heater
with two glass covers
Penulis: Tri Istanto
Kode Jurnal: jptmesindd120005
