| To
heat 375 liters of water at a job site with a local Annual
Insolation of 1400 hours, you need 40 Thermomax tubes.
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Solar
Insolation
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| General
Information
|
When designing a Thermomax
domestic solar water heating system for a family of five, determine
first how much hot water the family will be using per average day.
ASHRAE recommends 20 gallons per day per person.
Next find latitude, the amount of solar insolation, and
number of hours of available sunshine at the job site location.
THERMOMAX can provide you with the
expected solar energy figures for any month
of the year.
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|
Once the amount of hot water that must be supplied by solar
heating system is known, use the above chart to find how many
Thermomax tubes you need. The chart suggests 40 Tubes.
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To Next Step
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| Example
|
In the following four
pages we are going to size a solar water heating system for a
family of five. They have a hot water requirement of 50 liters per
day, per person, with a local Annual Insolation of 1400 hours.
Orientation of the roof is 30° West of South. The local Latitude
is 45° and the roof angle 35° (inclination difference 10°). If
your property is located in the US, go directly to US
Insolation Charts.
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