Hedges
I See Electromagnetic Fields!
- Joined
- Mar 28, 2020
- Messages
- 20,809
Maybe 6 hours for a 500W window air conditioner I have, 3 miles or so Honda Civic.
The Tesla gets more miles because my Civic only converts some energy in the gasoline to mechanical, rest is discharged as heat. Which is nice in the winter. Tesla is only given electricity after any heat was discharged somewhere else (if fossil fuel generation.)
If I ran a good portable gas generator to recharge the Tesla, likely similar 3 miles on 0.1 gallon.
If a combined cycle power plant burned the fuel to generate electricity and used waste heat to run a steam turbine, might generate twice as much electricity and waste only 1/3 of the energy as heat.
If that plant also discharged hot water circulated to heat local buildings, then all the energy of the fuel would be used for something.
Combined heat and power at the home could be good. In the winter, exhaust heat from engine or fuel cell heats the house while electricity is generated. Summer, PV might supply 100%. Keeping natural gas piped to houses would make this more practical and clean, and maybe better than discharging waste heat at peaker plants. Small generator at the house, probably 2/3 of energy goes to heat. Combined cycle plant, maybe 1/3 as heat, so if located where heat could be used that would be good as well.
The Tesla gets more miles because my Civic only converts some energy in the gasoline to mechanical, rest is discharged as heat. Which is nice in the winter. Tesla is only given electricity after any heat was discharged somewhere else (if fossil fuel generation.)
If I ran a good portable gas generator to recharge the Tesla, likely similar 3 miles on 0.1 gallon.
If a combined cycle power plant burned the fuel to generate electricity and used waste heat to run a steam turbine, might generate twice as much electricity and waste only 1/3 of the energy as heat.
If that plant also discharged hot water circulated to heat local buildings, then all the energy of the fuel would be used for something.
Combined heat and power at the home could be good. In the winter, exhaust heat from engine or fuel cell heats the house while electricity is generated. Summer, PV might supply 100%. Keeping natural gas piped to houses would make this more practical and clean, and maybe better than discharging waste heat at peaker plants. Small generator at the house, probably 2/3 of energy goes to heat. Combined cycle plant, maybe 1/3 as heat, so if located where heat could be used that would be good as well.