Circulation Pumps
 
 

SOLAFFECT-SYSTEMS

 

Home
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Solar collector basics
An introduction
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Differential Thermostat
Electronic control device to regulate heat storage.
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Solar panels.
Without these you have to buy oil, gas or electricity to heat your water
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Solar storage tank.
This gives you the freedom to use hot water whenever you feel like it.
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Heat exchanger.
Only necessary if you live in a climate where the outside temperature is dipping below 0°C
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Circulation Pump.
You will need it unless you live in the tropics.
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Valves and valve controllers.
Small items that completes the system.
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Instant water heater.
To give that small raise in temp. on cloudy days.
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Sizing a Solar Water Heating System
 Get the right numbers for your system
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28.03.08

 

 

Circulation Pumps

There are many pumps on the market, low voltage DC pumps powered by a solar panel or just a 120 volt AC circulating pump often used in a central heating system and they have a low power consumption.

My favorite is the 120 volt grundfos circulating pump (about $160.00) and it uses about 80 watts which is about $20.00 in electricity a year running for 6 hours a day.
This kind of pump is available at your local hardware store, and I think is a better deal than an expensive low voltage pump powered by a solar panel.

If you live in a frost free zone, you don’t need a pump if you use a solar panel with integrated storage tank (see picture)