Quote: (Originally Posted by mverick)
Ok,
Saying thermal conductivity of the scrubber is a reason for it being plastic? I understand a little. But, if it's metal. Won't it come to temp and stay there? You're already loosing heat through the bucket. All the time. So, loosing heat to metal of a scrubber and then holding it there might be a good thing. That Thermal Mass thing. Also, when you want to hold the temp there. The metal would hold more heat to release to the scrubber material? If the ends of the scrubber are plastic and the mesh is metal. No direct transfer of heat to the bucket. Or, not much.
Also wondering about compaction from the plastic screen material. I understand the foam doing that. But how flexible is the screen material? Most I've seen isn't flexible. I would understand if you can pack the scrubber so the wall bowed out. Don't know if that's how your packing it. But I think the walls bowing out would be from the thin plastic supports flexing. Not the screen material flexing.
Not trying to start anything. Just wondering out loud.
Hi mverick, the screen is a bit flexable and does bow out if packed really tight. I think the plastic structure is not flexing much in that situation. I would guess that it's designed that way as the scrubber needs to stay a certain height to maintain a seal at the top/inlet and the head.
As for thermal conductivity, it seems to me that you'd have to heat up a piece of metal to a higher temperature just to get it to hold a lower temp. In other words, I don't think the scrubber housing ever gets up to the temp of the gas in the jacket, no matter what it's made of. It's more a matter of which material loses heat at the slowest rate than retaining it... -Andy