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5. SIMULATION AND RESULTS
5.3 Partial optimization of STD parameters
In this section the standard (STD) parameters of the DSwA system
configuration (Double Stage, Wet Tower + Air Preheat) are partial
optimized.
5.3.1 Outer conditions
Evaporator temperature
The temperature level of the evaporator outlet (T EV AP ) is now investigated.
In a normal electrical air conditioner, the COP is strongly depen-
Figure 5.9: The outlet temperature of the cooling water (point 49) is 6 ◦ C in the standard
parameter configuration, and since ∆T min = 5 ◦ C this gives a temperature inside the evaporator
of 1 ◦ C. When T EV AP,w,o is increased, the temperature inside the evaporator increases by the same
amount.
dent on the evaporator temperature. But for the absorption unit it has
a much smaller effect (figure 5.9). When the evaporator outlet temperature
is increased from 5 ◦ C to as much as 30 ◦ C (the ambient temperature),
COP ABS,f uel is only increased 21% (9,5 percent points). So from
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