Solar Sand Battery Experiment Part -1 

This was my first attempt at the sand thermal heat battery. I am continuously upgrading the concept. I do believe I will be able to heat my home with this concept. I am building larger and more powerful ones as I work out the detsils.

Hi Mike I love your setup for the sand battery. I would like to build one also. Thinking a couple 200 watt solar panels with some 12 volt heating elements. In a 50 gallon outside and a 40 inside holding the sand..hooked direct to the solar panels. From there some copper plate acting like a heat sink from inside sand to airspace. A thermal heated electrical fan sitting on top of one 2x10 in copper sheets bent at a 90 degree angle close to an incorporated into my old plenum. From that a thermostat controlling the solar sand temp to provide a steady heat soarse. I'm not sure this made any sense to you but you help would be welcome.

Hey Mike, that BBC article was Finland, not NZ. I’m in NZ and making one based on your experiment, though.

The heated sand will retain its heat for longer period of time if kept in an insulated container. Good luck

Hello Mike, i think you could just using magnify mirrors reflector method (with solar tracking with an offset adjustment) and reflect to the sand box , like this you will increase the heat and store much more calories, the idea would be to heat the sand just under the melting point (1700°C) as optimized storage

You sound like a Irish newsreader 🇮🇪🤣. Sorry I meant the first guy talking on the video

you need a 48 volt induction circuit with a copper coil on an iron tank, i think it is by far the most efficient way and a minimum of 20cm isolation on every side of the sand battery box. good luck!

Hi mr mike, thank you for your effort, i'm from morocco, and i want to repeat the same experimentation but i find that solar panels are expensive here. For example a 17 watt panel costs 45 dollars. Almost 2,6 dollars for one watt. Is it the same price there ?