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Thanks boo1, So basically if the well water doesn't go above 45 F (7.2 C) year-round and the chlorides stay below 1000mg/L I will be fine with Stainless steel? Makes sense. -Vincent

I honestly don't know. I will have to ask.

Hi all, I'm wondering if anyone has had long-time experience with stainless steel exchangers on open-loop geothermal systems. The reason I am asking is because the heat pumps with stainless steel exchangers are slightly less expensive (and more readily available where I am) than cupro-nickel...

Geothermal energy is a very good and stable energy source. The available capacity depends on the type of soil and amount of ground water. Generally though in southern Canada the ground temperature is 7 to 8?C below 30-40 feet. This means that if you have enough ground water (for an open system)...

Thanks guys!

Hello all, I recently switched to Revit MEP and I love it. However, I am trying to copy entire electrical circuits and I can't seem to find how to do it (ie.: I can't group the LOGICAL circuits, copying switches and outlets is a breeze). Has anyone found a way to do this in Revit MEP 2009...

OK, yeah, sorry. I forgot to specify that we want an alternative to cast iron. Thanks!

Hello all, This is a pretty simple question: is there a cost-effective solution for acoustic PVC waste water drains? What I need is 4inch PVC pipes for the risers of a 3-story appartment complex which dampen noise so as to reduce the transmission of sound caused by flushing a toilet, draining a...

lol, star for you! :P

Thanks for your replies. Like carnage1 says, I don't have geothermal resources (ie.: hot springs) in my area. However, what you say about flow vs. temperature makes sense. I'm just worried that the radiators will not induce the same convective current as with a higher temperature which could...

Hello, I am looking to retrofit my existing residential heating system. It's an old oil-fired hot water system with radiators (not baseboard heaters). I know that conventional geothermal heat pumps can't reach higher temperatures than 120°F but I was wondering if anyone here has heard about...

Sure does! I got the whole thing working :D If you want to try out the BETA of my program go to: http://www.v2cstudios.com/en/psychrometree.html Read my blog page for more info.

I agree gepman, I finally caught on to the workings of the process. As for trashcanman's method I see the idea, although I find it much easier to visualize the process using Db and RH. Thanks a lot for the explanation!

Ok, well in my case the only thing I can't calculate is Wb. But I will keep looking too. If you want to use the application I'm making, watch this page: http://www.v2cstudios.com/en/psychrometree.html I'll be launching the BETA (currently it's in Alpha) as soon as I figure this Wb story out.

Thanks for the link, but I'd rather make my own, that way I will understand how it all works together. Plus, I'm making mine cross-platform (Win, Mac, Linux) :D

I know this thread is a month old, but it's never too late ;) Trashcanman has a good idea: t*=(Wx(1093+.444t)+.24t-1093Ws*)/(.24+W-.556Ws*) the problem with this is that given Db, Td (dewpoint) and Patm you cannot solve for t* since Ws* must be calculated using: Ws* = 0.62198(Pws/P-Pws)...