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=Specs= | |||
*'''Pressure drop, bend radius''' - [https://www.pexuniverse.com/pex-tubing-technical-specs] | |||
=Sourcing= | =Sourcing= | ||
*1/2", 600' for $120. [https://smile.amazon.com/Happybuy-Oxygen-Barrier-PEX-Tubing/dp/B0711Z2Y9Y/ref=sr_1_18?dchild=1&keywords=1%2F2%22%2Bx%2B300%2BFt%2BOxygen%2BO2%2BBarrier%2BPEX%2Bpiping%2B-%2BGenuine%2BPEX%2BGUY%2Bpiping&qid=1627766649&s=hi&sr=1-18&th=1] | *1/2", 600' for $120. [https://smile.amazon.com/Happybuy-Oxygen-Barrier-PEX-Tubing/dp/B0711Z2Y9Y/ref=sr_1_18?dchild=1&keywords=1%2F2%22%2Bx%2B300%2BFt%2BOxygen%2BO2%2BBarrier%2BPEX%2Bpiping%2B-%2BGenuine%2BPEX%2BGUY%2Bpiping&qid=1627766649&s=hi&sr=1-18&th=1] | ||
=Calculations= | |||
*Internal volume - 6 gal [https://smile.amazon.com/Happybuy-Oxygen-Barrier-PEX-Tubing/dp/B0711Z2Y9Y/ref=sr_1_18?dchild=1&keywords=1%2F2%22%2Bx%2B300%2BFt%2BOxygen%2BO2%2BBarrier%2BPEX%2Bpiping%2B-%2BGenuine%2BPEX%2BGUY%2Bpiping&qid=1627766649&s=hi&sr=1-18&th=1]. 1 gal per 100 feet. | |||
=Lessons Learned= | |||
*Large bed of sand to store heat, or even pulverized, dry soil - is sufficient to store large amounts of heat. Even for seasonal storage. | |||
*It is easier than having to maintain a large pool of water. | |||
*Specific heat of water - 1 cal/gram/C vs rock at 0.2 cal/gram/C. Need 5x rock to water. But [[Void Ratio]] may be 50%, so one would need 10x the sand compared to water. | |||
*Insulated basement with sand would be ideal. | |||
Latest revision as of 03:44, 2 November 2024
Specs
- Pressure drop, bend radius - [1]
Sourcing
- 1/2", 600' for $120. [2]
Calculations
- Internal volume - 6 gal [3]. 1 gal per 100 feet.
Lessons Learned
- Large bed of sand to store heat, or even pulverized, dry soil - is sufficient to store large amounts of heat. Even for seasonal storage.
- It is easier than having to maintain a large pool of water.
- Specific heat of water - 1 cal/gram/C vs rock at 0.2 cal/gram/C. Need 5x rock to water. But Void Ratio may be 50%, so one would need 10x the sand compared to water.
- Insulated basement with sand would be ideal.