The heat exchanger takes 20MW of heat and converts it into 250steam/sec, which is then consumed by 5 steam turbines (5 * 50steam/sec) to get 50MW of electricity.

Is this intentional? Getting 250MW (10MW of heat => 5 heat exchanger => 5 * 50MW) out of a single nuclear reactor seems a little much compared to vanilla...

Nuclear was rebalanced for make it more ups friendly and fit better with the fusion and antimatter. Play with mod options if u don't like it.

So it is intentional that 1 heat exchanger feeds 5 steam turbines?

I don't dislike it, it's only that I don't want to spend hours designing a nuclear setup, that won't work in the next update when the heat exchangers are rebalanced.

Should not change