Joined on November 12, 2012
Last Post on February 25, 2014
@ February 25, 2014 9:11 AM in any risk associated with a properly executed TSP cleaning?I like your research into this, been very interesting. The precipitates forming in your saucepan after the NaOH was added are most likely the chlorides that form from raising or lowering your solutions pH. And you and the Navy are correct in not wanting to use too high pH solution(or lower for that matter) and using water to adjust because it takes a factor of 10 for each level you wish to raise or lower the solution i.e; 1 litre of pH 4 solution to pH 6 requires approx 100 L of water, to hit 7 requires 1000 L. It's one of the reasons that we don't use water to adjust pH if there is a spill at our facility. Massive increase in size of the clean up
@ February 19, 2014 9:05 AM in How serious an issue is water quality?I would think it would be a competitor to their filtration products but I would imagine it would add another layer of protection when used with inhibitors and the like. We use a similar system by dominck-hunter at my full time job to filter parts of our process flows during vessel transfers. I've often wondered if it could be used in a hydronic system, especially ones that contain iron, and this appears to answer "yes" to that question. Nice design, the filter mediums look easy to swap out when the time comes.
I do have a question about the medium that removes all the dissolved minerals from the water. Would that not be a bad thing, kind of like adding deionized or RO water to the system.? Wouldn't the water remove theminerals from the metal in your system to try and re-establish a balance? We have problems measuring pH of our pure water because of the lack of minerals.
@ February 18, 2014 6:47 AM in how prevalent is this?A trip through the comment section brings up just about every myth/misinformation related
to radiant heat that I've ever heard, so it lets me know what I'm up against(Using 7/8 inch pipe under floor for better heat transfer was a good one, among others) I think it just reinforces the fact that the industry needs a better informed consumer as to why it costs what it does for this type of system. They don't know what they don't know." It's just water pumped through pipes, right? Anyone can do that" The comments weren't much of a surprise, I've heard variations of them in my short time learning this trade and those people tend not to be your client base. (Lowest price=best system)
@ February 12, 2014 11:19 PM in Heat gain in computer server roomCould they use the waste heat to help with DHW? Sounds like this would be a good application to use it.
@ February 1, 2014 12:14 PM in Battery CO?I work with methylene chloride on a regular basis at my place of business, and the vapours are heavier than air so they will accumulate in low areas with a potential for flashback.
I honestly hadn't given any thought to it being contained in cleaning compounds. I will have to look at the MSDS for the cleaning solvents when I'm back at work.
As far as breaking down in the body, we had an incident many years ago involving 2 gentlemen while they were loading an acetonitrile damp product. The air exchange for the room they were in was off, so while they were in there, their respirator cartridges were becoming saturated very quickly. 5 min life of fresh cartridges(unheard of!), 45 min exposure. Problems didn't arise until roughly 8 hrs later while they were at home. It was found that after ingesting the vapours, as it breaks down in the body, it turns to cyanide. The 2 gentlemen spent 2 days in the hospital in an oxygen tent, and were very lucky to survive, given how much chemical they had been exposed to.
@ January 4, 2014 10:13 AM in swing jointsThat his answer will be, yes
@ December 4, 2013 5:07 PM in Thoughts on dense packing plaster walls?can be a lot of heat loss, especially at the rim joists(old houses tend to leak where they meet the foundation)
Old layers of paint are NOT vapour barriers, they are vapour retarders. It is an important distinction to make.
@ December 3, 2013 9:07 AM in Thoughts on dense packing plaster walls?fine without a vapour barrier. Cellulose insulation isn't like fibreglass, it won't lose its insulating ability with some moisture in it. As long as the wall can dry in at least one direction, it will be ok.(We're talking vapour, not bulk water. Leaks are very bad and must be fixed) You can find just about all the info you'll need in the article below and its assorted links.
@ November 15, 2013 5:14 PM in Good Advice?The btu per sq. ft rules of thumb will be helpful for people who live in tents
@ November 12, 2013 6:24 PM in Quality of help on the WallThat is the perfect attitude to have. If you educate the consumer, they will be able to make more informed decisions and, in my opinion, it will be much easier to sell your installs because they'll know exactly why yours may cost more than the cheapest guy. Education helps everyone, in every line of work
@ November 2, 2013 10:23 PM in code man says my DHW tank has to go as a heat source What now?But according to their shipping policy, pexsupply doesn't ship outside of the U.S. I'm pretty sure that includes us up here in the Great White North.
@ October 31, 2013 10:10 AM in Knight boiler problemsadditional pictures of the exhaust/intake lines that terminate through the glass block wall. Those need to be done according to the manufacturers approved installation instructions.
@ October 19, 2013 6:29 PM in AquaPex in closed loopbut I thought I'd give a quick update. I replaced all the aquapex with hepex(wasn't as big a job as the last installer made it out to be, 1 person, 10hr day) and everyone that said it was the wrong tubing to begin with was absolutely correct. In roughly one year there was a significant coating of rust, sticking to EVERY square inch of the aquapex(with inhibitor). I could see it through the tubing with a flashlight. The hepex, so far, has absolutely nothing sticking to its walls(I don't expect that to change)
Thank you for the excellent advice(those that were worried about the boiler dying a quick death were justified, there was a lot of crap flushed out of the heat exchanger) and hopefully I get another 10 yrs out of the boiler so I can finish the reno work here before it needs replacing
@ October 19, 2013 5:52 PM in code man says my DHW tank has to go as a heat source What now?He may not be able to get that pump. I live fairly close to Toronto, so if its going to be available, it would be here first but every supply place I went to, after they stopped looking at me like I had 3 eyes,(not many of them had even heard of it 6 months ago) said it wasn't being shipped in the foreseeable future to Canada. (it may be available now but I haven't had time to look into it lately)
@ August 24, 2013 6:53 PM in Instantaneous vs IndirectI skimmed the article but it appears that they compared stand alone natural draft WH to a tankless and found a long payback? That would make an indirect an even better option, unless I missed that part, no?
@ May 18, 2013 10:09 AM in New kitchen cabinets over existing baseboard heat?any of the Canal line from Jaga. That might fit your needs. It can be installed in the floor and should be pretty quiet.
@ May 18, 2013 9:59 AM in Time to choose a boilerThe approvals for the tubing should be stamped on it at some point. DIN 4726 is one it should have. It's a German standard used to measure oxygen permeance in pex tubing.
@ April 6, 2013 10:27 PM in Why Does Steam Heat dry out the air More than fin tube elements??difference in construction between the 2 houses? Old houses tend to have steam systems installed, and unless you have done some upgrading to the building envelope, you are letting air in during the heating season that has a lower humidity than the other months. The rads just heat the air that is there, whether its damp or dry.
@ February 10, 2013 10:02 PM in In your opinion- best boiler on the market?boiler is the one your contractor picked using the heat loss calculation for your home, followed by actually reading the installation manual, right before they grab their combustion analyzer to commision your new boiler. There are few bad boilers but many bad installs.
@ February 8, 2013 1:32 PM in Fox news says solar doesn't work here..says you can't do radiant cooling here either. Just a european thing
@ February 1, 2013 10:26 PM in Actual savings over steam heatingread a fair comparison for these "efficiency" threads. Basically, you've increased their combustion by less than 10% over a properly maintained steam system BUT you've added an electrical cost to their distribution of that heat they didn't have before, no? system efficiencies are much closer once the total energy requirements to run them are compared. I guess we need to see the electrical bills now, apples to apples and all.
@ January 24, 2013 11:34 AM in AquaPex in closed loopto look into the permit requirements. It probably falls under replacement, which wouldn't require one unless I was adding to it. But I could be wrong, its something I'll have to check. I hadn't thought of that, thanks.
As to whether or not he'll throw in the pipe or not, I guess that'll depend on whether "i'll get back to you" was a way to get out the door or he truly meant it. I have a feeling that his canned answers not working on me probably means the former.