TY  - JOUR
T1  - Performance Test of Indirect-Direct Two Stage Evaporative Cooler Based Water Sprayer with
Primary Air Velocity Variation
AU - Hadi Suryo, Sumar AU - Yunianto, Bambang AU - Sinaga, Nazaruddin AU - , Yurianto AU - Yohana, Eflita 
JO  - Research Journal of Applied Sciences
VL  - 14
IS  - 12
SP  - 418
EP  - 424
PY  - 2019
DA  - 2001/08/19
SN  - 1815-932x
DO  - rjasci.2019.418.424
UR  - https://makhillpublications.co/view-article.php?doi=rjasci.2019.418.424
KW  - Indirect-direct two-stage evaporative cooler
KW  -water sprayer
KW  -fan speed
KW  -performance testing
AB  - Evaporative Cooler (EC) is an air conditioning
device that have advanteges compared to device using
refrigeration cooling system like low energy use, simply
manufactured and environmental friendy (not using CFC/
Chlorofluorocarbon). EC is compatible to cool buildings
in hot and dry regions. But, one of the EC type,
indirect-direct two-stage evaporative cooler, is wider in
use (more humid regions) and have better effectivity.
Indonesia is country that have wide variety of ambient air
condition like hot, cold, dry and humid. This study will
present the planning, making and testing experimentally
performance indirect-direct two-stage evaporative cooler
using water sprayer in Indonesia. Moreover, this study
uses variation of primary airflow fan speed 33, 66 and
100%. The result is highest performance that achieved is
in the primary airflow fan speed 33% which provided
101% effectivity that change condition of air from
33.0°C and 58.7% RH to 26,1°C and 94.7% RH.
ER  -