AI6YR Ben66F indoors, 86.4F outdoors. Able to open the windows last night to bank some cool air before today's scorching. Will have to see how well that works through the rest of the heatwave this week. #heatwave #CAwx #VenturaCounty
Joseph Elfelt@ai6yr 40 degrees cooler and light rain in our part of the PNW. Got a fire going in the woodstove.
killickWe had a small Cape Cod style house. My dad would put a box fan in one of the windows of both upstairs bedrooms. Then he'd close all the other windows except for two windows downstairs. The fans would suck up the hotter air and exhaust it to the outside and fill the house with cooler night air.
polo@ai6yr you may find this intriguing. Wouldn’t be surprised if you’ve already seen it!
https://youtu.be/s-41UF02vrU
https://youtu.be/s-41UF02vrU
Turning a $150 AC Into a Super-Efficient Geothermal Unit!
@gobag Too long for me to find it, but what did he fill his geothermal tubing with? (water? other liquid?)
@ai6yr the working fluid is water circulating to transport heat from the AC to the ground - 30:06
Backfill around the tubing is a geothermal grout mixture
• Water (50%)
• Sand (40%)
• Bentonite (10%) - 44:15
• Graphite: he adds graphite powder and flakes at 3% (each) to enhance thermal conductivity and reduce viscosity - 47:01
Backfill around the tubing is a geothermal grout mixture
• Water (50%)
• Sand (40%)
• Bentonite (10%) - 44:15
• Graphite: he adds graphite powder and flakes at 3% (each) to enhance thermal conductivity and reduce viscosity - 47:01
@ai6yr I just remembered this video about PCM’s. it would be fascinating to see what happened using this phase change material instead of the muddy mixture in the AC video
https://youtu.be/Nqxjfp4Gi0k
Needlessly complex? Probably. Super fun science experiment? Definitely. Great info for emergency scenarios either way
