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The Difference between Wetback and Dryback Boilers - The Boiling Point
WEBVTT Kind: captions Language: en
00:00:00.089 welcome to the boiling point you know in 00:00:02.27000:00:02.280 the boiler business we have one or two 00:00:04.10000:00:04.110 boilers you've got fire two boilers and 00:00:06.44000:00:06.450 many times while we're out we're 00:00:08.81000:00:08.820 listening to things like wet back and 00:00:10.91000:00:10.920 dry back so today I thought we'd talk a 00:00:13.07000:00:13.080 little bit about the difference between 00:00:14.39000:00:14.400 the wet back and the drive back boiler 00:00:29.87000:00:29.880 welcome to the boiling point we're gonna 00:00:31.91000:00:31.920 go to class today like we normally do 00:00:33.86000:00:33.870 when we talk to drilled Blaine and we're 00:00:35.60000:00:35.610 going to talk a little bit about the 00:00:36.65000:00:36.660 drab back boiler versus the wet back 00:00:39.04900:00:39.059 boiler now drilled it's Oaks day today 00:00:41.24000:00:41.250 when we are actually filming this it's 00:00:43.22000:00:43.230 Derby time here Louisville Kentucky 00:00:45.65000:00:45.660 drilled was actually at the track 00:00:47.36000:00:47.370 yesterday usually he loses how did you 00:00:50.24000:00:50.250 do hit one superfecta made for the day 00:00:53.68900:00:53.699 perfect perfect paper the drinks and 00:00:56.15000:00:56.160 everything else cuz usually that bill is 00:00:57.68000:00:57.690 a lot higher then then what what are you 00:01:02.24000:01:02.250 actually bet so anyway well we go into 00:01:05.02900:01:05.039 this we're going to talk dry back verse 00:01:07.07000:01:07.080 wet back boilers drilled this is a topic 00:01:10.40000:01:10.410 that I know when I'm out and talking 00:01:11.93000:01:11.940 with folks and you're out talking with 00:01:13.58000:01:13.590 folks that they have a lot of questions 00:01:15.13900:01:15.149 about so let's kind of clarify some 00:01:17.42000:01:17.430 things why don't you go through it 00:01:18.65000:01:18.660 alright yeah I'm kind of excited to talk 00:01:20.74900:01:20.759 about this because I repeat this a lot 00:01:22.85000:01:22.860 to a lot of different customers so I 00:01:24.38000:01:24.390 wanted to kind of go through some of the 00:01:25.82000:01:25.830 the clarifications between the dry vac 00:01:28.70000:01:28.710 the wet back the engineering of it all 00:01:31.16000:01:31.170 efficiency efficiencies obviously it's a 00:01:34.96900:01:34.979 lot of times confusing to everyone 00:01:36.58000:01:36.590 because there's a lot of ways to enhance 00:01:38.96000:01:38.970 the boiler the boiler being just a heat 00:01:40.96900:01:40.979 exchanger I'm going to quickly kind of 00:01:42.83000:01:42.840 go through this part of it with the 00:01:44.63000:01:44.640 victory energy design this is their 00:01:46.24900:01:46.259 center fire drive back a preferred 00:01:49.42900:01:49.439 design I like this one a lot it's 00:01:52.13000:01:52.140 engineered to optimize the water 00:01:54.89000:01:54.900 circulation and that has a lot of 00:01:56.35900:01:56.369 benefits particularly in process 00:01:57.92000:01:57.930 environments the way you're able to 00:01:59.96000:01:59.970 manage the water mm-hmm 00:02:02.24000:02:02.250 also it's engineered to promote good 00:02:04.42900:02:04.439 heat transfer especially from the 00:02:06.53000:02:06.540 standpoint of the durability where you 00:02:08.63000:02:08.640 have good even flow it has a downdraft 00:02:11.09000:02:11.100 design which is unique to it versus 00:02:13.28000:02:13.290 other types of drive back spray so it's 00:02:15.14000:02:15.150 very durable design and it will it I'm 00:02:17.53900:02:17.549 assuming that there's some maintenance 00:02:19.03900:02:19.049 issues obviously with it that not in 00:02:21.11000:02:21.120 that much maintenance there no there's 00:02:22.52000:02:22.530 not a lot of maintenance and I'm going 00:02:24.25900:02:24.269 to get into some of the details of that 00:02:25.72900:02:25.739 as we go through actual construction 00:02:27.65000:02:27.660 concepts of dry backs so it's built for 00:02:31.49000:02:31.500 long term performance can't say that all 00:02:34.00900:02:34.019 dry backs are that a lot of the dry back 00:02:36.28900:02:36.299 designs aren't the best designs for say 00:02:38.56900:02:38.579 a process environment where this design 00:02:40.93900:02:40.949 is very suitable for that 00:02:44.22900:02:44.239 also when I talked about mentioned 00:02:46.58000:02:46.590 efficiency earlier people always confuse 00:02:48.86000:02:48.870 say thermal efficiency with perhaps 00:02:50.69000:02:50.700 combustion efficiency or they say 00:02:52.94000:02:52.950 overall boiler efficiency the true the 00:02:55.16000:02:55.170 truth efficiency that you're trying to 00:02:56.53900:02:56.549 come up with is a fuel to steam 00:02:58.00900:02:58.019 efficiency how much gas am i using how 00:02:59.80900:02:59.819 much steam am i getting that's the 00:03:01.52000:03:01.530 ultimate result and the heat exchanger 00:03:03.86000:03:03.870 is only a one piece of that you may 00:03:06.83000:03:06.840 design it you know to five square feet 00:03:08.44900:03:08.459 you may be using cxi d tubes or 00:03:12.55000:03:12.560 turbulator 's and things like that to 00:03:14.69000:03:14.700 enhance the heat transfer but at the end 00:03:17.00000:03:17.010 of the day it's how much fuel went in 00:03:18.83000:03:18.840 and how much steam came out and the heat 00:03:21.61900:03:21.629 exchanger itself is only responsible for 00:03:24.19900:03:24.209 so much of that a typical 5 hour 5 foot 00:03:27.02000:03:27.030 square foot design versus another 5 00:03:28.75900:03:28.769 squit 4 square foot design is going to 00:03:31.03900:03:31.049 be 80% period if you add extended 00:03:35.00000:03:35.010 heating surface tubes you can enhance 00:03:37.33900:03:37.349 that a couple of points because the heat 00:03:40.15900:03:40.169 transfer is better versus just a smooth 00:03:42.47000:03:42.480 two you increase the laminar flow the 00:03:44.53900:03:44.549 tumbling same thing like when you use a 00:03:46.19000:03:46.200 turbulator you get the heat turning over 00:03:48.25900:03:48.269 get the tube working completely right 00:03:50.27000:03:50.280 now the XID - that's kind of a it's not 00:03:53.21000:03:53.220 a new technology but it has allowed us 00:03:55.33900:03:55.349 in the boiler industry to be able to do 00:03:57.34900:03:57.359 some more things if I absolutely we've 00:03:59.83900:03:59.849 been designing with this for you know 00:04:01.72900:04:01.739 more than 12 years right a lot of people 00:04:04.36900:04:04.379 had shied away from it early on because 00:04:06.55900:04:06.569 the combustion systems were struggling 00:04:08.14900:04:08.159 with the back pressure on that is the 00:04:10.52000:04:10.530 one thing about getting some back 00:04:11.65900:04:11.669 pressure and decreasing that flow 00:04:13.03900:04:13.049 through the unit allows that heat 00:04:14.39000:04:14.400 exchanger to work better okay so you 00:04:16.27900:04:16.289 literally you do get a benefit in where 00:04:19.21900:04:19.229 you increase the surface so you actually 00:04:21.11000:04:21.120 incorporate that into the designs 23 25 00:04:23.83900:04:23.849 percent additional surface so you can 00:04:25.33900:04:25.349 make the boiler a little bit smaller 00:04:26.71900:04:26.729 mm-hmm or that additional surface also 00:04:30.80000:04:30.810 increases the productivity of the tube 00:04:32.60000:04:32.610 about 85% okay so you could lower the 00:04:35.54000:04:35.550 surface potentially and utilize the 00:04:38.39000:04:38.400 calculations of the edge your efficiency 00:04:40.12900:04:40.139 of the tube right but one of the other 00:04:42.14000:04:42.150 things we like to do in our designs and 00:04:44.68000:04:44.690 the dry backs utilizing the center fire 00:04:47.36000:04:47.370 is we have more productivity in the 00:04:51.40900:04:51.419 furnace we'd like to do 55 60 percent of 00:04:54.23000:04:54.240 the work in the furnace let's get 00:04:55.39900:04:55.409 started 00:04:55.90000:04:55.910 early and not wait to catch up in the 00:04:58.84000:04:58.850 tubes particularly in a process 00:05:00.85000:05:00.860 environment I want to get the heat into 00:05:02.38000:05:02.390 the water as quickly as possible and not 00:05:05.11000:05:05.120 have to rely on the tubes to finish the 00:05:06.97000:05:06.980 job 00:05:07.45000:05:07.460 right typical boilers and they do this 00:05:10.15000:05:10.160 because if you do less productivity in 00:05:12.40000:05:12.410 the furnace you can make a smaller 00:05:13.45000:05:13.460 furnace furnaces are expensive to make 00:05:15.19000:05:15.200 and so if you do 45% of the work and 00:05:17.65000:05:17.660 then you just catch it up with the tubes 00:05:19.03000:05:19.040 and that works in a lot of general 00:05:21.34000:05:21.350 lumbering heating applications but we 00:05:23.89000:05:23.900 have a lot of critical process customers 00:05:25.99000:05:26.000 and when they say hey I need heat they 00:05:27.97000:05:27.980 mean I need it right now and I don't 00:05:29.38000:05:29.390 want to wait till later right so we tend 00:05:31.57000:05:31.580 to lean on these kind of designs and 00:05:33.43000:05:33.440 incorporate the extended surface tubing 00:05:35.59000:05:35.600 in that these are even in our rental 00:05:37.75000:05:37.760 fleet we use those that dry back design 00:05:40.18000:05:40.190 is absolutely the other thing to note 00:05:42.76000:05:42.770 with dry backs and this is not special 00:05:45.43000:05:45.440 to this centerfire design or any one 00:05:47.41000:05:47.420 manufacturer but you will tend to use 00:05:49.69000:05:49.700 less fuel possibly up to 10% less fuel 00:05:53.28000:05:53.290 utilizing a dry back and the reason that 00:05:56.47000:05:56.480 is you've got this large heat sink in 00:05:58.87000:05:58.880 the boiler so that when it actually 00:06:01.14000:06:01.150 cycles off that heat sink will maintain 00:06:05.50000:06:05.510 pressure longer before the burner comes 00:06:07.72000:06:07.730 back on because the most efficient 00:06:09.73000:06:09.740 boiler is the one that's not running no 00:06:11.86000:06:11.870 fuels getting used right so if we can 00:06:14.23000:06:14.240 keep that burner off longer and hold 00:06:16.12000:06:16.130 setpoint you actually save fuel over 00:06:18.79000:06:18.800 time sure so that's one of the benefits 00:06:21.04000:06:21.050 I'm going to kind of show the 00:06:22.96000:06:22.970 construction process of a dry back 00:06:24.64000:06:24.650 because it's real confusing for people 00:06:26.38000:06:26.390 often to compare what is a dry back 00:06:28.72000:06:28.730 versus a wet back it's real hard to 00:06:30.22000:06:30.230 grasp in your head on the wet back until 00:06:32.17000:06:32.180 you see some of this and we'll show that 00:06:33.55000:06:33.560 later in this video so here you have the 00:06:38.05000:06:38.060 center fire design the first pass is 00:06:39.82000:06:39.830 always the furnace we're going to come 00:06:41.53000:06:41.540 back around in the second pass here we 00:06:43.81000:06:43.820 have a corrugated furnace and then you 00:06:45.43000:06:45.440 have a turn section here in the design 00:06:47.98000:06:47.990 and the center fire design we like this 00:06:50.11000:06:50.120 because that we like the thermal stress 00:06:52.69000:06:52.700 on this one because as it turns down and 00:06:56.44000:06:56.450 then get comes back over it's a much 00:06:58.87000:06:58.880 more uniform and even flow kind of a 00:07:01.21000:07:01.220 circular heating flow plus when we put 00:07:04.18000:07:04.190 the make up water the return water back 00:07:06.70000:07:06.710 in we're not putting it in the hottest 00:07:09.11000:07:09.120 area so it reduces sledging and things 00:07:11.09000:07:11.100 like that that can cause additional 00:07:12.92000:07:12.930 problems hmm here we're just showing 00:07:15.83000:07:15.840 what disengaging area actually is and 00:07:17.87000:07:17.880 steamed space so you have storage in 00:07:20.18000:07:20.190 here where steam is actually in this 00:07:22.52000:07:22.530 chamber but the disengaging area is a 00:07:24.89000:07:24.900 big deal as well that's what allows the 00:07:27.11000:07:27.120 amount of heat to be made up quickly 00:07:28.67000:07:28.680 okay and then these things the outlets 00:07:35.48000:07:35.490 and the manholes in these things are 00:07:37.18900:07:37.199 pretty typical between whether it's a 00:07:39.08000:07:39.090 dry back or a wet back that does it very 00:07:40.87900:07:40.889 much right 00:07:42.40000:07:42.410 same thing with doors and so forth now 00:07:48.83000:07:48.840 the dry back and the reason why we like 00:07:50.60000:07:50.610 the centerfire as much as anything is 00:07:52.93000:07:52.940 everyone will tell you that dry backs 00:07:55.31000:07:55.320 are high maintenance and that's true for 00:07:57.59000:07:57.600 designs that aren't like this and the 00:08:00.02000:08:00.030 reason that is is the dry backs of other 00:08:02.62900:08:02.639 designs where they have multiple passes 00:08:05.15000:08:05.160 going from bottom to top there are 00:08:06.92000:08:06.930 multiple pieces in the door your 00:08:09.50000:08:09.510 shelving you have different materials 00:08:11.84000:08:11.850 and you get a lot of expansion and 00:08:14.12000:08:14.130 contraction that leads to cracking and 00:08:15.86000:08:15.870 maintenance okay all of our dry vac 00:08:18.23000:08:18.240 designs that with the center fire 00:08:19.70000:08:19.710 concept whether it be a 2 or 3 which is 00:08:22.64000:08:22.650 the preferred engineering that we like 00:08:24.80000:08:24.810 to do this is a 3 pass it's kind of a 00:08:27.11000:08:27.120 keystone design single piece if it were 00:08:29.02900:08:29.039 to pass it would come straight across 00:08:30.95000:08:30.960 and be a half moon it's still a 00:08:33.05000:08:33.060 one-piece design we use a special 00:08:35.54000:08:35.550 material with a 0 expansion modulus up 00:08:38.39000:08:38.400 to about 3,000 degrees and because we do 00:08:41.02900:08:41.039 more work in the furnace the door sees 00:08:42.94900:08:42.959 the least amount of heat we usually show 00:08:45.29000:08:45.300 about 600 degrees less than a typical 4 00:08:47.75000:08:47.760 pass design ok now we're moving on talk 00:08:51.17000:08:51.180 about the web map design you know I 00:08:53.60000:08:53.610 talked highly of the dry vac design we 00:08:55.79000:08:55.800 also produce wet back designs right so 00:08:58.10000:08:58.110 for us it's not a prejudice where we 00:09:00.92000:09:00.930 have to lean on one or the other we make 00:09:03.53000:09:03.540 these they fit in a lot of great 00:09:05.60000:09:05.610 applications I like this design pretty 00:09:08.18000:09:08.190 well especially this to pass with this 00:09:09.86000:09:09.870 integral heat exchanger so that you can 00:09:13.69900:09:13.709 have less space you don't have to have 00:09:15.19900:09:15.209 the economizer up high so this is a 00:09:17.21000:09:17.220 unique design for us and all the to pass 00:09:19.34000:09:19.350 wet backs that we do and be in a 00:09:21.65000:09:21.660 two-piece wet backs kind of you 00:09:22.92000:09:22.930 as well you can also have this in a 00:09:25.80000:09:25.810 three pass but the two passes 00:09:27.12000:09:27.130 automatically come with it 00:09:28.47000:09:28.480 and I'm going to get into kind of the 00:09:30.03000:09:30.040 construction of the wetback it's a 00:09:32.51900:09:32.529 little more difficult to understand but 00:09:34.35000:09:34.360 here's what the extended surface heat 00:09:36.26900:09:36.279 exchanger would look like to be right 00:09:37.82900:09:37.839 inside the shell save you some space 00:09:40.38000:09:40.390 typical economizers obviously are on top 00:09:43.17000:09:43.180 of the stack so right when you're saying 00:09:44.94000:09:44.950 that that's actually inside here yeah as 00:09:47.13000:09:47.140 we go through the this extended surface 00:09:50.07000:09:50.080 heat exchanger then we exit the stack 00:09:51.90000:09:51.910 right so it does save some space it 00:09:54.66000:09:54.670 doesn't have to ship in a separate piece 00:09:56.04000:09:56.050 it's a pretty unique design okay we also 00:09:59.16000:09:59.170 can do the same thing in a three pass in 00:10:01.38000:10:01.390 this one it's not being shown but we 00:10:03.21000:10:03.220 would come back through in the third 00:10:04.44000:10:04.450 pass and it would be integrated in here 00:10:06.09000:10:06.100 prior to the stack so we kind of get 00:10:07.76900:10:07.779 into the wet pack wet back design here 00:10:10.38000:10:10.390 then and kind of show how how it is 00:10:12.66000:10:12.670 actually made compared to what the dry 00:10:14.57900:10:14.589 back arrest and this one is a little bit 00:10:17.10000:10:17.110 difficult to grasp I love this 00:10:19.80000:10:19.810 presentation because it illustrates it 00:10:21.36000:10:21.370 pretty well this is the internal wetback 00:10:25.07900:10:25.089 furnace mm-hmm and the reason why you'll 00:10:28.86000:10:28.870 see here in a minute why we call it a 00:10:31.07900:10:31.089 wetback or a water back we make we use 00:10:34.50000:10:34.510 the first pass of the furnace we come we 00:10:36.81000:10:36.820 turn through this turn section without 00:10:38.79000:10:38.800 actually getting to the rear wall the 00:10:40.82900:10:40.839 rear wall is separate okay which you can 00:10:43.32000:10:43.330 see here so here you have this internal 00:10:46.01900:10:46.029 furnace water is between the actual rear 00:10:49.65000:10:49.660 wall and that furnace we have stay rods 00:10:52.50000:10:52.510 that have to hold it into place you've 00:10:54.44900:10:54.459 got a small plug opening that you can 00:10:56.88000:10:56.890 crawl through to get in this furnace 00:10:58.41000:10:58.420 okay I can't Carr all through it but 00:11:00.78000:11:00.790 little people who can edit whether we're 00:11:02.61000:11:02.620 hit if I got in there it would be a 00:11:05.49000:11:05.500 freak show because I'm a little 00:11:06.90000:11:06.910 claustrophobic you up so but one thing 00:11:10.35000:11:10.360 to be concerned about here and this is 00:11:13.35000:11:13.360 what I was talking about with the dry 00:11:14.43000:11:14.440 backs being able to stay off longer all 00:11:17.61000:11:17.620 of the heat is integrated directly into 00:11:19.56000:11:19.570 water and there are some benefits to 00:11:21.03000:11:21.040 that but when you're modulating up and 00:11:23.37000:11:23.380 down a lot and what and the burner is 00:11:25.94900:11:25.959 going off you like that rock there to 00:11:28.29000:11:28.300 keep it off as long as a candle to use 00:11:30.21000:11:30.220 less fuel there's a very durable system 00:11:33.56000:11:33.570 not unlike the dry back but 00:11:36.42000:11:36.430 the durability of this is pretty 00:11:38.37000:11:38.380 exceptional because of all that 00:11:39.60000:11:39.610 integration but I'm always cautious when 00:11:42.81000:11:42.820 people they want to increase the size of 00:11:45.33000:11:45.340 the materials and all that and this is a 00:11:47.67000:11:47.680 heat exchanger so the way they last is 00:11:50.04000:11:50.050 to get the heat exchanged properly you 00:11:52.17000:11:52.180 can get away with a little more on the 00:11:53.55000:11:53.560 tubes in the tube sheets but this 00:11:55.83000:11:55.840 furnace when you start getting up above 00:11:58.11000:11:58.120 say 200 psi gets a little unwieldly 00:12:01.17000:12:01.180 because it's also its own pressure 00:12:03.09000:12:03.100 vessel so we might be an inch and a half 00:12:05.31000:12:05.320 thick here versus an inch and a quarter 00:12:07.17000:12:07.180 and a two hundred psi design and that's 00:12:09.87000:12:09.880 not in proportion to the rest of the 00:12:12.90000:12:12.910 unit so if it's not properly heated or 00:12:15.93000:12:15.940 it's cycling a lot this can be a failure 00:12:19.32000:12:19.330 point and a very expensive one with the 00:12:22.17000:12:22.180 dry back not having that internal 00:12:24.15000:12:24.160 furnace we can easily do 300 psi not 00:12:27.27000:12:27.280 have to worry about that because there's 00:12:28.89000:12:28.900 nothing that's out of balance in the 00:12:30.78000:12:30.790 heat transfer and then just to clarify 00:12:32.94000:12:32.950 again you've got your gases coming 00:12:34.80000:12:34.810 through through the furnace it's and 00:12:37.50000:12:37.510 they're staying in here to get through 00:12:39.27000:12:39.280 this yeah they're going to get in here 00:12:40.98000:12:40.990 and come back through here right and 00:12:42.87000:12:42.880 again illustrate the water is actually 00:12:45.39000:12:45.400 in this area right okay so there's a 00:12:48.84000:12:48.850 really just like it just like in a dry 00:12:51.69000:12:51.700 bag right but in the dry back you have 00:12:54.15000:12:54.160 the big door on the outside and the wet 00:12:55.65000:12:55.660 back you of the small little plug okay 00:12:58.47000:12:58.480 so here is what it looks like as you 00:13:00.87000:13:00.880 come down through here the second pass 00:13:02.91000:13:02.920 of tubes is coming back over top of the 00:13:05.25000:13:05.260 furnace this is a low offset furnace 00:13:06.99000:13:07.000 like like a traditional like a 00:13:09.21000:13:09.220 traditional dry back right and then they 00:13:11.61000:13:11.620 come through turn again turn again and 00:13:14.04000:13:14.050 get smoke back to now onto the third 00:13:15.39000:13:15.400 pass mm-hmm and then here you again have 00:13:20.31000:13:20.320 your steam chest and you're disengaging 00:13:22.59000:13:22.600 surface right mm-hmm and then the same 00:13:27.51000:13:27.520 things that you would see on the drives 00:13:29.88000:13:29.890 are nothing really different right but 00:13:32.91000:13:32.920 when you get to the rear door it is it 00:13:36.03000:13:36.040 is uniquely different okay and here you 00:13:38.49000:13:38.500 have the small plug it's leading into 00:13:41.34000:13:41.350 the furnace that you have to crawl 00:13:43.50000:13:43.510 through if you have any tube stuff 00:13:45.42000:13:45.430 someone's got to crawl into that little 00:13:47.37000:13:47.380 furnace and do the tube work 00:13:49.95000:13:49.960 versus standing outside the door sure 00:13:52.53000:13:52.540 and rolling the tubes right so special 00:13:55.23000:13:55.240 little dude does this all right so small 00:14:02.97000:14:02.980 hinged or there's not much refractory 00:14:04.47000:14:04.480 there like I said and refractory can be 00:14:06.54000:14:06.550 a repair issue the one piece design that 00:14:09.06000:14:09.070 we use does not have that kind of 00:14:11.10000:14:11.110 trouble when you have the multi piece 00:14:12.84000:14:12.850 you should be concerned it's going to 00:14:14.10000:14:14.110 cost you some money in every few years 00:14:16.11000:14:16.120 right now you have said we a lot and 00:14:19.56000:14:19.570 what we like to do and we do have an 00:14:23.37000:14:23.380 announcement to make that we have 00:14:25.11000:14:25.120 selected victory energy as a partner of 00:14:28.59000:14:28.600 ours to actually make the fire tube 00:14:31.29000:14:31.300 boilers for us so brick once you maybe 00:14:33.81000:14:33.820 go through a little bit of the stocking 00:14:35.19000:14:35.200 program yeah we regularly stock and we 00:14:38.40000:14:38.410 stock a morning generic fashion since 00:14:40.05000:14:40.060 they could go anywhere in the US at any 00:14:41.79000:14:41.800 time even though when we design for 00:14:44.49000:14:44.500 stationary units we use a lot of higher 00:14:47.25000:14:47.260 technology a little more efficient this 00:14:49.11000:14:49.120 is more for emergency requirements but 00:14:51.27000:14:51.280 the standard units are all three pass we 00:14:53.28000:14:53.290 do utilize the XID technology and most 00:14:55.56000:14:55.570 of all the units are low NOx that tends 00:14:58.68000:14:58.690 to be the situation throughout the 00:15:00.84000:15:00.850 country everybody's looking to go to 30 00:15:02.46000:15:02.470 ppm so free pass dry vac low NOx is 00:15:06.00000:15:06.010 typical we are going to have a standard 00:15:07.59000:15:07.600 power flame burner on it with linkage we 00:15:10.26000:15:10.270 can upgrade them to say a parallel 00:15:12.48000:15:12.490 positioning or a higher efficiency 00:15:14.52000:15:14.530 burner but this is the standard package 00:15:16.62000:15:16.630 we carry them in most of the size that 00:15:19.29000:15:19.300 would be typical package range from 50 00:15:21.33000:15:21.340 all the way to 800 horsepower keep the 00:15:23.55000:15:23.560 larger units at a little bit higher 00:15:25.17000:15:25.180 pressure they tend to be in more process 00:15:27.18000:15:27.190 environments now you'd have more than 00:15:29.07000:15:29.080 one of each size yeah we typically among 00:15:32.37000:15:32.380 this group will usually have a couple of 00:15:34.86000:15:34.870 dozen units in stock ready to go so if 00:15:37.65000:15:37.660 you have an emergency of that 00:15:38.91000:15:38.920 requirement give us a call they're 00:15:41.94000:15:41.950 always available well there you have it 00:15:43.92000:15:43.930 the difference between the drive back 00:15:45.71000:15:45.720 and and the wet back drill appreciates 00:15:48.63000:15:48.640 you hanging out with us and we'll see 00:15:50.46000:15:50.470 you next time on the boiling point well 00:15:53.10000:15:53.110 appreciate Gerald stopping by and 00:15:54.27000:15:54.280 talking to us a little bit about the 00:15:55.59000:15:55.600 difference between the dry vac boiler 00:15:57.00000:15:57.010 and the wetback boiler hopefully you 00:15:59.04000:15:59.050 have a little bit better explanation of 00:16:00.99000:16:01.000 the two 00:16:01.48000:16:01.490 we're really excited about the 00:16:03.18900:16:03.199 relationship between victory energy and 00:16:05.23000:16:05.240 where and make sure you give us a call 00:16:07.23900:16:07.249 if you ever need a boiler make sure you 00:16:10.05900:16:10.069 like us on Facebook and follow us on 00:16:12.06900:16:12.079 Twitter if you don't mind subscribe to 00:16:14.35000:16:14.360 the YouTube channel and share the videos 00:16:16.48000:16:16.490 and we'll see you next time on the 00:16:18.36900:16:18.379 boiling point 00:16:36.61000:16:36.620 you
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