Simulation was carried out on a yearly basis. Increases in
power output are reported in Figures 8 and 9 for sites 1 and
2 respectively, on a month by month basis, as a percentage
of the uncooled case. It can be noted that the two-stage
absorber (Case A) gives the maximum power increase in
the warmest month (18% in July), whereas its single-stage
counterpart (Case B) is only slightly less effective. Table I
shows annual totals calculated from the previous data.
While maximum power increase is of the same amount
(17-18%) for both sites considered, annual total increase
for site 2 is much higher than for site 1. In summer months
on both sites absorption units work at full load, but ambient
conditions on site 2 are more uniform and also give
considerable gains in spring and fall. Ebeling et al. (1992)
report a 21-25% increase in power output on a hot summer
day. We also experienced similar high values, but they were
limited to a few hours on the hottest days in summer. It
should be underlined that results in Figures 8 and 9 are
monthly averages, which are more relevant in the case of a