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Sand battery - thermal mass proto type.

 
Mart Hale
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Interesting experiment with sand battery.

Life on a farm is a school of patience; you can't hurry the crops or make an ox in two days.
Henri Alain

 
Mart Hale
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Life on a farm is a school of patience; you can't hurry the crops or make an ox in two days.
Henri Alain

 
Mart Hale
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Life on a farm is a school of patience; you can't hurry the crops or make an ox in two days.
Henri Alain

 
Mart Hale
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Looks like this gent found a good way of using thermal mass in concrete to heat their home.

https://medium.com/@upnorthandoffgrid/6-heating-systems-5c5727c1607e

Combining heat pump + masonary heater I do find innovative.

Life on a farm is a school of patience; you can't hurry the crops or make an ox in two days.
Henri Alain

 
Mart Hale
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Use of excess solar to store heat in sand.

Life on a farm is a school of patience; you can't hurry the crops or make an ox in two days.
Henri Alain

 
Mart Hale
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Life on a farm is a school of patience; you can't hurry the crops or make an ox in two days.
Henri Alain

 
Mart Hale
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Testing different types of sand.

Life on a farm is a school of patience; you can't hurry the crops or make an ox in two days.
Henri Alain

 
Mart Hale
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The comparison of graphite verses the sand I found most interesting.

Life on a farm is a school of patience; you can't hurry the crops or make an ox in two days.
Henri Alain

 
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