3 ms·
Boiling water through friction requires seals [1] , and rubber seals are pretty hard (not impossible) to make low tech. The lowest tech solution IMHO is a squi
by thsksbd 3y ago
Boiling water through friction requires seals [1] , and rubber seals are pretty hard (not impossible) to make low tech.
The lowest tech solution IMHO is a squirrel cage generator and ohmic resistors. No magnets or fancy electronics are needed. Just remnant magnetization of soft iron and some copper wire/tube.
[1] a demo doesn't need seals, but a heating solution that will work for ten years will.
- aziaziazi 3y ago> seals Are they also required bellow boiling temp ? You probably don’t need much more than 55C at home. Increase the temp to store more energy and use a thermal expending socket to stop heat production before boiling temp. > ohmic resistors Isn’t it similar to the eddy current generator he talk about ? http://www.bulipi-eee.tuiasi.ro/archive/2013/fasc.4/p12_f4_2013.pdf http://www.bulipi-eee.tuiasi.ro/archive/2013/fasc.4/p12_f4_2...
- thsksbd 3y agoIf the water is not boiling you're going to need a very large system (for natural convection) or a pump.
- Cerium 3y agoWe should be able to design the mixer fins and chamber such that it generates some pressure differential between the input and output ports.
- aziaziazi 3y agoDo the size of the system need to be that much larger for 95C compare to 100C ? In my understanding the post talk about methods that do not involve pressure. On top of that if you want more heat you may simply use a liquid switch higher boiling temp.
- thsksbd 3y agoYes because at 100C you can use phase change to transport water, which means you've built a primitive heat pipe. At 95C H transport is slow so heat will accumulate until it reaches 100. But then you have boiling and, w/out good seals water loss.