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Using the Thermal mass of water for greenhouse heat exchange

Scribble plan to practical success. The pump sends water around 30 metres of pipe in the greenhouse ceiling & back into the side butts.This slowly heats up the water during the day.This has two uses; cooling the greenhouse down on hot days & releasing ridual heat during the night

Thermal mass properties

Thermal mass properties

Material Thermal mass (volumetric heat capacity, KJ/m³.k)

Water 4186

Concrete 2060

Sandstone 1800

Compressed earth blocks 1740

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