Page 256 - Alternative Energy Systems in Building Design

232 PASSIVE SOLAR HEATING TECHNOLOGIES

Multiply by sizing factor 0.67.

2
Collector area needed: 302 ft .
2
HC-40s collectors are going to be used on the project, so divide by 40 ft .
The number of HC-40 collectors needed: 8.

This guide is an approximation only. Wind speeds, humidity levels, desired pool
temperature, and other factors can also affect proper solar pool system sizing. If the
prospect does not want to use a cover, you may have to double or even triple the solar
coverage to achieve the desired swimming temperature.
The choice of collector size and system configuration depends on the designer.
What must be considered is the roof space as well as the associated cost. Installation
of smaller collectors will be a great deal more difficult than larger ones. None of these
rules is concrete, and a designer’s best judgment should be followed. Figure 6.7 shows
an industrial solar water heating panel installation.

SUGGESTED PRACTICES
The use of common sense when investing in solar pool heating is very important.
First-time buyers should consider the following:

Figure 6.7 An industrial solar water-heating panel installation.