SolarAttic PCS1, User Manual

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SECTION 2 - HEATING DATA Page S2-4
EMPIRICAL TRACKING
The data supplied below is an example of the PCS1Õs actual performance near
Jacksonville, Florida during 1989. It can be observed that the PCS1 raised the poolÕs
temperature from 3 to 8
°
F in a single day. A more typical rise in the poolÕs
temperature is 1 to 2
°
F per day. Thus, over the course of two weeks, the pool is
raised to the desired swimming temperature. The pool in the example below used a
pool blanket during periods of extended non use.
The format provided below is a good one to use for determining the overall
performance of the PCS1 in your own installation. Take the temperature readings at
the same time each morning [7-9 a.m.] and each afternoon [4-6 p.m.].
EMPIRICAL DATA
Date Air Temp Conditions Pool
°
F a.m. Pool
°
F p.m.
°
F Gained
4/19 87 Sunny 82 87 5
4/20 80 Overcast 85 88 3
4/21 74 Cloudy --- 86 ---
4/22 83 Sunny 83 88 5
4/23 85 Sunny 86 91 5
4/24 88 Sunny 87 92 5
4/25 90 Sunny 89 94 5
4/26 90 Sunny 90 98 8
4/27 90 Sunny 96 stopped heat
5/2 84 Sunny 84 90 6
5/2 80 Sunny 86 91 5
What is the PCS1 capable of doing? The following curves show designed
verified performance. The performance curves assume constant temperature
differentials. In reality, the temperature differentials will vary somewhat
throughout the course of the solar heating day.