In winter or overcast days the roll of the hot water tank, the one used for cold becomes a hot water tank as it collects heat from the fuel stove. The polly pipe then is supplying cold water.. things change with the weather. The solar cooker does not work on cloudy days but on those days its nice to have the fuel stove gong ..in winter the open fire burns most of the time but it warms the rock work and the cement floor so its nice and toasty even if it is out for a day.. but it is nice on those long wet times as it keeps the place dry and warm.
alex
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