Set the correct identifier for variable speed cooling tower in GetTowerInput

[lymereJ]

Pull request overview

• Fixes Runaway temperature error from chiller condenser flow control changes #10858

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[lymereJ]

The variable speed tower index used to be based on the variable speed tower indices, and not on all the cooling tower indices. So for instances where different types of tower are modeled together the wrong inputs were retrieved. For this file, the two speed tower inputs were being retrieved for the variable speed tower.

This issue did not come up before 24.2 because of #7464, the tower calculation were failing silently.

[mjwitte]

So, if I'm following this correctly, we no longer need the field VSTower and eliminating that would simplify the code in places like this in CoolingTower:onInitLoopEquip:
https://github.com/NREL/EnergyPlus/blob/aa39f9fea74d3a3041985ed83fcd60cb093fe6ba/src/EnergyPlus/CondenserLoopTowers.cc#L3278-L3282
where (state.dataCondenserLoopTowers->towers(this->VSTower).MaxWaterFlowRatio
would become this->MaxWaterFlowRatio

[lymereJ]

I think that this is correct. I can make that change throughout.

[lymereJ]

@mjwitte, done!

[mjwitte]

Fix works as expected. Compared annual simulations with 24.1 and this branch and annual results are very similar. And thanks @lymereJ for the additional code cleanup.

[Myoldmopar]

Fine change and set of cleanups. I'll do a quick check with latest develop, but this is probably still ready to go.

[Myoldmopar]

It all passes fine, although now I'm noticing the LgOffVAVusingBasement test is taking notably longer on my machine. Once my brain reboots after the holidays I'll go back and see why. But this doesn't need to wait, good to go. Thanks @lymereJ and @mjwitte