SolarAttic PCS1, User Manual

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SECTION 2 - HEATING DATA Page S2-5
PCS1 Operating Curves
0 . 0 0
2 . 0 0
4 . 0 0
6 . 0 0
8 . 0 0
1 0 . 0 0
6 0 5 5 5 0 4 5 4 0 3 5 3 0 2 5 2 0 1 5 1 0
D
E
G
R
E
E
S
F
1 0
1 5
2 0
2 7
3 2
3 7
4 8 6 0 7 0 8 0
ATTIC
D
T
150K 130K 110K 90K 70K
6 0 K
50K
40K
30K
20K
NOMINAL BTUS/HR
OUTPUT
D
T
FLOW RATE IN GPM
These operating curves show the heat transfer range of the PCS1. By knowing
the flow rate in gallons per minute, the attic's temperature and the pool's
temperature -- both the BTU hourly rate of heat transfer and the output rise in
degrees Fahrenheit from the PCS1 can be accurately predicted.
Example: If the flow rate is 30 gpm and the temperature differential between
the attic and the swimming pool is 32
°
F, the output rise will be approximately 4
°
F
[PCS1 output temperature minus input temperature]. This can be found by simply
locating the flow rate on the horizontal scale and going up vertically on the graph
until you find the curve with the correct temperature differential between the attic