tenthirtyam

8 ms·

1. 91.▲
   by tenthirtyam 5y ago

   Well now. We can have a heat pump with a COP of 3.5 or so. Let's say we put in 1kW of electricity, and take out 3.5kW of heat energy. Now let's take 2.5kW of that heat energy, push it through this gadget at 40% efficiency to get 1
2. 92.▲
   by tenthirtyam 5y ago

   Hmm. But over a fixed distance, the overall energy expenditure scales as v^2 (for v^3 power regime). Double the speed implies octuple (?) the power but only for half the time implies quadruple the energy spend. Not invalidating your point,
3. 93.▲
   by tenthirtyam 5y ago

   My thoughts on this are that we drastically need to reduce vehicle (car, suv, etc) safety. As vehicles become safer and safer, drivers feel more confidence, and make everyone else less safe. For example - many cars now have dipped (low beam