Investigation of the Part-Load Performance of an Absorption Chiller.
Investigation of the Part-Load Performance of an
Radermacher, R.; Klien, S. A.; Didion, D. A.
ASHRAE Transactions, Vol. 89, No. 1, 1983.
water chiller; absorption; experiments; ammonia; valves;
high pressure; insulation; climate; low pressure;
weather effects; evaluation; tests
An experimental investigation designed to determine the
part-load performance of an ammonia-water
absorption water chiller is described. The stead-state
and cyclic performance of the chiller were measured
under controlled conditions in an environmental chamber.
Two valves were installed in the chiller to separate
high- and low-pressure regions during off times, and
insulation was applied to the chiller components. By
measures, losses due to cyclic operation were reduced by
over 50%, resulting in a 6% to 7% increase in the
calculated seasonal performance factor for typical
northern and southern climates in the United States. The
of the valves eliminated the need of the "spindown"
period, thereby reducing the consumption of parasitic