4 ms·

> A fourth way to raise water without electricity: solar concentration to produce steam in a loop Nice. Perhaps some sort of system leveraging this application

> A fourth way to raise water without electricity: solar concentration to produce steam in a loop Nice. Perhaps some sort of system leveraging this application be used to charge batteries on a local, distributed grid? Or, simultaneously charge your electric car and heat/cool a home on a sunny day.

westurner 2y ago
Is solar concentration more or less efficient than loud electric pumps at raising water for a water tower, which stores gravitational potential energy and pressurizes the tubes? Could heat a water tank full of gravel or sand. "Engineers develop 90-95% efficient electricity storage with piles of gravel" https://news.ycombinator.com/item?id=39927280 https://news.ycombinator.com/item?id=39927280 How efficiently does a solar concentrator fill a tank of water at a higher altitude? (How) Does relative humidity at the top and bottom of the tube significantly affect fill/lift rate? Is PV to batteries to pumps more or less efficient than solar concentrated steam?
- westurner 2y ago
  A fifth way to raise water: n-body gravity; wait for the moon and the tides A sixth way to raise water through a pipe possibly at an angle possibly into a water tank: MHD: Magnetohydrodynamic drive. - "Designing a Futuristic Magnetic Turbine (MHD drive)" @PlasmaChannel https://youtube.com/watch?v=WgAIPOSc4TA& https://youtube.com/watch?v=WgAIPOSc4TA&" - "A Compact Electrodynamic Pump using Copper and TPU" https://news.ycombinator.com/item?id=40635173 https://news.ycombinator.com/item?id=40635173 - Is MHD more or less efficient than the other methods? (Edit) I wouldn't matter whether the pipe to lift water though is at an angle; Is my intuition bad on it this? Shallower orbital trajectories are preferred to perpendicular to the gravitational field of the greatest local mass because: is it just Max Q or also total energy? But the downward force of a column of water in a tube at an angle is no greater than the two pointing straight up, is it?

westurner 2y ago

Is solar concentration more or less efficient than loud electric pumps at raising water for a water tower, which stores gravitational potential energy and pressurizes the tubes? Could heat a water tank full of gravel or sand. "Engineers develop 90-95% efficient electricity storage with piles of gravel" https://news.ycombinator.com/item?id=39927280 https://news.ycombinator.com/item?id=39927280 How efficiently does a solar concentrator fill a tank of water at a higher altitude? (How) Does relative humidity at the top and bottom of the tube significantly affect fill/lift rate? Is PV to batteries to pumps more or less efficient than solar concentrated steam?

westurner 2y ago
A fifth way to raise water: n-body gravity; wait for the moon and the tides A sixth way to raise water through a pipe possibly at an angle possibly into a water tank: MHD: Magnetohydrodynamic drive. - "Designing a Futuristic Magnetic Turbine (MHD drive)" @PlasmaChannel https://youtube.com/watch?v=WgAIPOSc4TA& https://youtube.com/watch?v=WgAIPOSc4TA&" - "A Compact Electrodynamic Pump using Copper and TPU" https://news.ycombinator.com/item?id=40635173 https://news.ycombinator.com/item?id=40635173 - Is MHD more or less efficient than the other methods? (Edit) I wouldn't matter whether the pipe to lift water though is at an angle; Is my intuition bad on it this? Shallower orbital trajectories are preferred to perpendicular to the gravitational field of the greatest local mass because: is it just Max Q or also total energy? But the downward force of a column of water in a tube at an angle is no greater than the two pointing straight up, is it?