gandalf_der_12te
@gandalf_der_12te@slrpnk.net
- Comment on solar PV → heat pump → water heater; direct, no A/C or intermediate components. Practical? Feasible? 1 month ago:
IIUC, it’s variable D/C which must be regulated and/or inverted to A/C involving more hardware, conversion, and waste.
Actually, I had a discussion about this who really knows this stuff recently, and we figured that the inversion process isn’t actually that inefficient. The efficiencies achieved are often >95%, so there isn’t actually a lot of loss.
- Comment on Elements of Renewable Energy 2 months ago:
yes, and more importantly, normal Hydro plants could be updated to release water at selected times, to create “on-demand power”. The energy is stored in the water behind the dam. So conventional, already-existing hydro dams can perform a two-sided function: Storing water, and to release it on-demand. Like a battery that is refilled by nature.
- Comment on Elements of Renewable Energy 2 months ago:
My idea is that most Hydro-Power plants can be used as reservoirs with little modification.
And biomass can be burned at whatever moment you like (provided you have the plants to do so), so it is “on-demand power” in some sense.
- Submitted 2 months ago to technology@lemmy.world | 6 comments
- Submitted 2 months ago to energy@slrpnk.net | 50 comments
- Comment on What Will We Do With Our Free Power? 2 months ago:
- non-urgent computing (AI training)
- non-urgent transports (i.e. construction material)
- steel, aluminum production
- Comment on Hydrogen Policy’s Narrow Path: Delusions And Solutions 2 months ago:
It’s a conundrum, because while biofuels are expensive, there are ways to make them significantly cheaper, for example refining organic garbage and waste into fuels.
- Comment on Hydrogen Policy’s Narrow Path: Delusions And Solutions 2 months ago:
actually, that’s not true. I built a hobby-grade hydrolysis machine in my garage for a total of $3. I can’t imagine hydrolysis machines to be significantly expensive in general.
The reason why they’re expensive today is because they’re completely over-engineered. But that’s not physics’ fault. It’s just someone seeking the “highest-quality product” instead of one that makes economic sense.
- Comment on Would you buy 2nd-hand PV panels? 2 months ago:
Just informing you: You can see the power output of PV panels by looking at the Watt number. It says something like 400 Wp (Watt peak - i.e. Watt under direct sunlight). Voltage is more or less irrelevant.
- Comment on How a wave of giant solar projects could transform the Minnesota energy mix 2 months ago:
solar energy is the cheapest form of energy at this point. capitalism will drive the green energy revolution forward from now on.
