Two questions...

1) Is there a way to model a pump and dump chiller in eQuest version 3.64? The chiller I am trying to model rejects the condenser water heat by pumping city water through the barrel and dumping back into the sewer afterwards. I'm pretty sure this chiller is from the Mesozoic era.

2) I was trying to be on the safe side and make a backup copy of a model. However, I accidentally saved over the wrong file and lost a lot of work. Is there a way to revert back in time in eQuest to bring back a previous model? Something tells me I might be up a creek on this one.

Thank you all in advance.