00:00:03.130 [Music] 00:00:06.13000:00:06.140 welcome to TC - hi my name is Bill 00:00:09.23000:00:09.240 Bailey and my hydronic specialist here 00:00:11.03000:00:11.040 at Tec since about 2004 today what we 00:00:14.41900:00:14.429 want to talk about is how to right-size 00:00:16.82000:00:16.830 a boiler probably most you know almost 00:00:20.33000:00:20.340 all the Oilers out in the world right 00:00:22.18900:00:22.199 now are oversized that's not good for 00:00:25.07000:00:25.080 any piece of equipment as we all know 00:00:27.08000:00:27.090 equipment runs the best when it's off 00:00:29.50900:00:29.519 it's the most energy efficient runs also 00:00:33.20000:00:33.210 very well when it's always running 00:00:35.27000:00:35.280 it's always add some steady-state 00:00:37.40000:00:37.410 efficiency the worst is when it's 00:00:39.77000:00:39.780 cycling that add off and off psycho 00:00:42.35000:00:42.360 Hertz any major piece of equipment 00:00:44.68000:00:44.690 including boilers so today we want to 00:00:47.29900:00:47.309 talk to you about how to right-size that 00:00:49.54900:00:49.559 boiler for the customer to make sure 00:00:52.01000:00:52.020 you're giving him a high quality piece 00:00:53.56900:00:53.579 of equipment that will last long time 00:00:55.85000:00:55.860 perform the way it's supposed to be so 00:00:59.15000:00:59.160 let's get into how do we great size dis 00:01:01.84900:01:01.859 equipment what's on a tag well there's 00:01:05.50900:01:05.519 two numbers were really concerned about 00:01:06.89000:01:06.900 the first one being the input on this 00:01:10.10000:01:10.110 boiler the inputs a hundred thousand 00:01:12.05000:01:12.060 BTUs that's basically ten is how much 00:01:14.21000:01:14.220 gas this boiler can consume the next 00:01:18.46900:01:18.479 number is the do a heating capacity this 00:01:21.08000:01:21.090 is just a calculation by the government 00:01:22.94000:01:22.950 that's basically stating that this 00:01:24.53000:01:24.540 boiler manufacturer claims is 83 percent 00:01:27.44000:01:27.450 efficient times 100,000 BTUs 00:01:30.67900:01:30.689 DLE says the maximum output we can get 00:01:33.38000:01:33.390 out of those boilers 83,000 BTUs that's 00:01:36.46900:01:36.479 a usable number going to our radiators 00:01:38.89900:01:38.909 baseboard and whatever the third number 00:01:41.69000:01:41.700 out here you'll see a lot of times is we 00:01:43.03900:01:43.049 call the I be our number this is just a 00:01:45.38000:01:45.390 number from way back but basically 00:01:47.20000:01:47.210 compensated for uninsulated pipes in the 00:01:49.99900:01:50.009 basement crawlspace or whatever the 00:01:53.14900:01:53.159 biggest thing we're looking at the tag 00:01:54.77000:01:54.780 is you are repeating the mistakes of the 00:01:57.41000:01:57.420 past this is what we're talking one 00:01:59.71900:01:59.729 boiler oversize so if you use this 00:02:01.49000:02:01.500 number you're not right sizing that 00:02:05.24000:02:05.250 boiler for the customer or for yourself 00:02:08.44000:02:08.450 calculating baseboard this is probably 00:02:10.94000:02:10.950 easiest of all the heat emitters we're 00:02:12.65000:02:12.660 going to 00:02:13.30900:02:13.319 today I just need a few simple tools 00:02:16.22000:02:16.230 tape measure flashlight and for us older 00:02:21.80000:02:21.810 guys a nice little mirror so we can look 00:02:23.56900:02:23.579 underneath the baseboard and see how 00:02:25.19000:02:25.200 much thin tube we actually have the 00:02:27.92000:02:27.930 thing with baseboard is we're really not 00:02:29.59900:02:29.609 concerned about the link to the cover 00:02:31.16000:02:31.170 yes it's there it's part of the equation 00:02:33.34900:02:33.359 but the true heat emitter in baseboard 00:02:37.92900:02:37.939 the actual thing - this is what we 00:02:41.39000:02:41.400 really want to know this is what we need 00:02:43.97000:02:43.980 for our calculation right we might have 00:02:47.30000:02:47.310 25 26 feet of cover or we'll have 10 00:02:50.83900:02:50.849 feet of thin tube this is the 00:02:54.40900:02:54.419 calculation you want you want to know 00:02:56.11900:02:56.129 this 10 feet those other 16 or 17 feet 00:02:59.30000:02:59.310 at very little to the calculation we 00:03:02.05900:03:02.069 want to know about this 10 feet of into 00:03:03.86000:03:03.870 an average typical residential baseboard 00:03:07.03900:03:07.049 like this will give you a 550 to 600 00:03:10.28000:03:10.290 BTUs output all right when you start 00:03:12.89000:03:12.900 looking at larger stuff more like 00:03:15.61900:03:15.629 commercial you're gonna be looking at a 00:03:18.77000:03:18.780 bigger fin as you can see that's a lot 00:03:22.55000:03:22.560 different from there it's gonna put out 00:03:24.17000:03:24.180 a lot more heat 00:03:25.61000:03:25.620 okay curious it follows the same rule we 00:03:28.03900:03:28.049 only wanna know how much of this is in 00:03:29.96000:03:29.970 here to do our calculations with the 00:03:32.59900:03:32.609 larger stuff you want to look up the 00:03:34.12900:03:34.139 manufacturer and find out what they're 00:03:36.55900:03:36.569 rated output curve what a fin is 00:03:39.50000:03:39.510 actually truly the calculation number 00:03:42.11000:03:42.120 you need calculating radiators this 00:03:47.03000:03:47.040 always seems to be a little more 00:03:48.14000:03:48.150 mysterious but it really isn't we're 00:03:50.89900:03:50.909 going to need a couple measurements and 00:03:52.90900:03:52.919 then we're going to go to a chart this 00:03:54.55900:03:54.569 charts been around for a long time so 00:03:56.27000:03:56.280 pick you're gonna see is a little fuzzy 00:03:57.80000:03:57.810 but radiators you haven't changed that 00:04:00.08000:04:00.090 much first thing we need to know is 00:04:02.80900:04:02.819 basically the height of the radiator to 00:04:04.58000:04:04.590 do that so we'll take measures we're 00:04:07.03900:04:07.049 going to the bottom foot of the radiator 00:04:09.31900:04:09.329 to the top of the radiator 00:04:11.03000:04:11.040 this application is about 30 inches the 00:04:14.36000:04:14.370 next thing we're going to be looking at 00:04:15.71000:04:15.720 looking for is how many columns are on 00:04:18.86000:04:18.870 that radiator this application we have 00:04:21.68000:04:21.690 three columns now we take that 00:04:23.93000:04:23.940 information 30 inches high 00:04:26.62000:04:26.630 on three columns go to our chart and the 00:04:30.61000:04:30.620 chart will tell us let's say number five 00:04:32.74000:04:32.750 this application bet five refers to DDR 00:04:36.85000:04:36.860 equivalent direct radiation what that 00:04:39.97000:04:39.980 really means is if you were to take this 00:04:41.67000:04:41.680 column this piece here and lay it out 00:04:45.76000:04:45.770 flat you'd have five square feet of 00:04:49.17000:04:49.180 radiation all right so that's what this 00:04:52.03000:04:52.040 can give on this radiator three sections 00:04:58.17000:04:58.180 so now we take that five square feet 00:05:01.20000:05:01.210 times the three sections that means this 00:05:04.24000:05:04.250 radiator has 15 square feet of radiation 00:05:09.00000:05:09.010 the chart will tell us that and a common 00:05:14.17000:05:14.180 fact in the hydraulic industry is each 00:05:16.87000:05:16.880 square foot will give you a hundred and 00:05:19.66000:05:19.670 seventy B choose output at 180 degree 00:05:22.66000:05:22.670 water temperature they're all standards 00:05:24.73000:05:24.740 in the industry so take out your little 00:05:27.25000:05:27.260 calculator do a little math you take 00:05:30.34000:05:30.350 that 170 times 15 and you'll find this 00:05:34.72000:05:34.730 radiator would put out a maximum of 00:05:38.67000:05:38.680 2,550 BTUs per hour that's all can't put 00:05:43.27000:05:43.280 out three thousand it could only put out 00:05:45.43000:05:45.440 two thousand five hundred and fifty at 00:05:47.68000:05:47.690 180 degree water temperature do that all 00:05:50.95000:05:50.960 the rest of the radiation building add 00:05:52.90000:05:52.910 them all up now you know the total b2 00:05:55.45000:05:55.460 loss the b2 output with that about of 00:05:59.20000:05:59.210 all the radiators in that residence 00:06:02.40000:06:02.410 calculating radiant floor this is 00:06:04.93000:06:04.940 probably the easiest the different 00:06:07.21000:06:07.220 terminal units were really talking about 00:06:08.74000:06:08.750 in our cutaway here we show you 00:06:10.93000:06:10.940 different spacing here you don't have to 00:06:13.48000:06:13.490 worry about that when you're doing the 00:06:14.56000:06:14.570 calculations okay gotta remember that no 00:06:18.13000:06:18.140 matter how time we make the tube the 00:06:19.96000:06:19.970 radiators really the concrete that's 00:06:22.96000:06:22.970 what's putting the heat up that's the 00:06:25.03000:06:25.040 heat emitter typical kind of creative 00:06:27.70000:06:27.710 applications residentially about the max 00:06:30.55000:06:30.560 B to you you can get out per square foot 00:06:32.59000:06:32.600 of concrete about 40 beats user square 00:06:35.35000:06:35.360 foot so our little mock-up here 00:06:37.81000:06:37.820 we've got 24 square feet times 40 which 00:06:40.66000:06:40.670 means that this floor section here could 00:06:43.51000:06:43.520 put out 9600 BTUs per hour if this was a 00:06:47.80000:06:47.810 commercial building our greenhouse the 00:06:51.34000:06:51.350 masks it really gives about 50 beats use 00:06:53.62000:06:53.630 a square foot so 50 times our 24 again 00:06:56.50000:06:56.510 we're looking at about 12,000 BTUs is 00:06:58.93000:06:58.940 the max output from this radiant floor 00:07:01.29000:07:01.300 remember it's not the tube it's the 00:07:04.90000:07:04.910 khaki that is to true heat emitter here 00:07:09.36000:07:09.370 thanks for joining us they won't plan 00:07:12.22000:07:12.230 your next boiler job you will right 00:07:13.66000:07:13.670 sizer this will be more cost-effective 00:07:15.91000:07:15.920 for you and your bid and more energy 00:07:18.49000:07:18.500 efficient for you customer in the long 00:07:19.96000:07:19.970 run thank you 00:07:21.80000:07:21.810
Office location
Engineering company LOTUS®
Russia, Ekaterinburg, Lunacharskogo street, 240/12