Recent content by Chris J

To answer all questions No it's not built yet just something I was thinking about after seeing something else similar and it made me think it could be used as a swing. After thinking about it I'll probably just give up on the idea as there's too many unknowns and I'm not sure it's worth it. I...

Yep It's just not sold as the usual stores that just carry typical pipe.

138" between posts.

The reason for the single post design is limited space. It's basically a copy of this, except 4' higher and 1 size larger pipe and substantially larger footings, I think the commercially available design only calls for 32" deep. I'm considering on shortening it as maybe 4' higher is just too...

Hi all, I designed this swing set and now I'm doubting my self and getting concerned. I used 5" schedule 40 steel pipe for the posts and 3" schedule 40 steel for the top horizontal bar. There's only one post per side to be set 48" down in concrete 16" in diameter. This designed is to help...

Motor heat aside, because I guess it could also be a submerged pump in theory.... But, assuming you're delivering 90% into the pump, where does that 90% actually go? Does it all go to friction losses as heat in the end?

I wonder if setting up a small closed loop system with some small rubber tubing and a tiny pump would be a good test in a freezer. If water moving through a centrifugal pump and through some tubing at a decent velocity freezes, it would suggest movement alone isn't enough. But I'm not sure how...

Ah, So similar to turning water into steam taking an incredible amount of heat yet not increasing it's temperature. To go from water to ice will take a huge amount of cooling, not at all the same as dropping the water temperature a few degrees. Understood. So my fear of the pool freezing was...

Thank you for taking the time to respond! Can you explain the line in bold? I understand latent heat. But I don't understand the part about an additional 80C.

When water is moving does the actual freezing temperature change or does steam etc not freeze because warmer water keeps getting brought to the surface? Or is there something else going on that lowers the freezing point as long as the water is in motion? There are several reasons for my...