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Sunamp Heat Battery
#1
https://www.youtube.com/watch?v=9upXeTMHUqE

Looks like a commercial offering here in the making but I like the concept,
I believe it uses molten salt? to keep heat, well insulated. And then when you want hot water or heating you then run water through a heat exchanger and get water out. What I like about it, is that if I overspec my solar array then I could have excess power diverted to this unit once my powerwall/battery bank was topped off.

If you want the video they discuss charging up the heat bank and then transporting it elsewhere , where it is needed. I find that interesting, for things on a large scale.

What do you all think?

Come chat with us! http://chat.diypw.com/
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#2
(12-10-2016, 05:47 AM)Elwood Wrote: Looks like a commercial offering here in the making but I like the concept,
I believe it uses molten salt? to keep heat, well insulated. And then when you want hot water or heating you then run water through a heat exchanger and get water out. What I like about it, is that if I overspec my solar array then I could have excess power diverted to this unit once my powerwall/battery bank was topped off.

If you want the video they discuss charging up the heat bank and then transporting it elsewhere , where it is needed. I find that interesting, for things on a large scale.

What do you all think?

Hello. My name is Elliot Wilson. I am the Technical Blogger for Sunamp.

I believe it would be good if their was a Sunamp representative to answer all your questions.

I am not here to sell Sunamp products but I am here to communicate the benefits and if I transgress any forum rules, please let me know.

The Sunamp products uses the latent heat properties of sodium acetate trihydrate to store heat at a constant temperature of 58°C and release this temperature quickly when needed. One of the main benefits of being able to store heat at a constant temperature is that it reduces the standing heat loss of the material. A major factor which contributes to standing heat loss is the difference in temperature. That is why other heat storage devices tend to have a higher loss rate as the stored temperature is higher eg thermal hot water tanks where temperatures can go as high as 80°C. 

You are also exactly right about being able to divert excess energy to be stored. This is especially relevant now for new up takers of solar power. When Feed in Tariffs (FITs) were first introduced the rate of pay to electricity generated was around 40p / kWh and the fee for exporting was around 3p / kWh, the duration of this generous deal was 25 years. However now the generation rate has been drastically cut to around 4p / kWh for generation and another 4p for exporting, furthermore the duration of this deal has been reduced to 20 years.

Basically, this means that solar power owners need a way to maximise the amount of value they get from their system whether that be from a Tesla Powerwall to store electricity or a SunampPV to store heat. 

One of our employees (Andy) has a solar array with a SunampPV and has connected this to data analysis software. This data is uploaded online and has a backlog of data of about 2-3 years so you have a detailed understanding of the amount of energy you can generate from a solar panel array on an annual basis. His SunampPV was introduced around the 2015 mark so you can see how data before and after its installation.

One thing to note however is that Andy was an early adopter of solar and he lives in the South West of England which has around 1600 hours of annual sunshine on average.

Happy to answer more questions Smile


Meant to say, the web address for his website can be found here:
http://wattson.energyhive.com/dashboard/AndyT
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