Re:Germany shelves Nord Stream 2 pipeline
by fsh on Tuesday February 22, 2022 @08:42AM
(#30427799)
You lose something like 70% of the thermal output of the reactor in the conversion to electricity. Also the capacities a nowhere near large enough. Nord Stream 2 alone can transport something like 63 GW worth of gas. This is more than the total electricity consumption of Germany.
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Re:Germany shelves Nord Stream 2 pipeline
by hannasanarion on Tuesday February 22, 2022 @09:02AM
(#30427993)
And for a home heater, 80% of the heat from the gas you burn goes up the chimney.
Larger energy capture devices can be more efficient. One highly-efficient fuel burning plant providing power to a hundred thousand electric resistive heaters can produce more useful heat per unit fuel than a hundred thousand small-scale self-maintained home furnaces.
Re:Germany shelves Nord Stream 2 pipeline
by michaelt on Tuesday February 22, 2022 @09:26AM
(#30428265)
You're both wrong.
Combined cycle power plants can be 64% efficient [1] at turning heat into electricity. And if that power goes on to run a heat pump, 1 watt of electric power can deliver 3-4 watts of heating.
And modern gas combi boilers can be 92-98% efficient [2].
The days of people throwing away 80% of the energy they pay for are long gone.
[1] https://en.wikipedia.org/wiki/Combined_cycle_power_plant [2] https://www.which.co.uk/reviews/boilers/article/boiler-energ...
Could you give some examples for nuclear power plants that are using a combined cycle turbine? I was under the impression that the operating temperatures of BWRs or PWRs are nowhere near high enough for that.