IEA Solar Heating and Cooling Programm - NachhaltigWirtschaften.at

IEA SHC Task 38 Solar Air Conditioning and Refrigeration
Subtask A Report, Date:…
8
7
variable speed control on
water spray mode off
7,00
6,00
6
]
W
[k 5
ity
c 4
a
p
a
c 3
g
lin
o 2
C
1
5,00
4,00
3,00
2,00
1,00
l
e
P
O
C
0
6
:5
1
6
:1
2
1
6
:3
2
1
6
:5
2
1
6
:1
3
1
6
:3
3
1
6
:5
3
1
6
:1
4
1
6
:3
4
1
6
:5
4
1
6
:1
5
1
6
:3
5
1
6
:5
5
1
6
:1
6
1
6
:3
6
1
6
:5
6
1
6
:1
7
1
6
:3
7
1
6
:5
7
1
6
:1
8
1
6
:3
8
1
6
:5
8
1
6
:1
9
1
0,00
6
:3
9
1
Time
cooling capacity
COPelectrical
The average COP el without variable speed control of the heat rejection fans is 4,55 at the 25 th
of August 2010 (see Figure 13). In the time period, when the variable speed control of the
heat rejection fans is in operation, the average COP el decreases to 2,78. The average
cooling capacity of the adsorption chiller in the time period without variable speed control of
the heat rejection fans amounts to 5,46 kW; with variable speed control of the heat rejection
fans this value drops to 2,24 kW. Furthermore, the wet operation mode of the heat rejection
turns off by starting the variable speed control mode.