Shell and Tube Heat exchanger thermal rating with HTRI

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Kind: captions
Language: en

00:00:00.089
hello guys welcome to my youtube channel
00:00:03.470 00:00:03.480 Nick Lee and her beauty I also had a
00:00:07.070 00:00:07.080 dinner ok today I'm gonna explain how to
00:00:10.190 00:00:10.200 DJ in Sharon to heat exchanger we call
00:00:13.640 00:00:13.650 it thermal rating I would like to
00:00:16.760 00:00:16.770 explain shell and tube heat exchanger
00:00:20.269 00:00:20.279 well then I've done design in my past
00:00:23.840 00:00:23.850 project inside the regeneration
00:00:26.000 00:00:26.010 packaging so you can see a glyco
00:00:29.390 00:00:29.400 contactor and we have a shell and tube
00:00:31.939 00:00:31.949 heat exchanger this left side link
00:00:35.569 00:00:35.579 glycol and Q side is dry gas dry gas and
00:00:41.030 00:00:41.040 this hot fluid is Lin TG so we can cool
00:00:48.170 00:00:48.180 down the dry gas by means of this hot
00:00:52.700 00:00:52.710 link eg okay so this linkage the flow
00:00:58.310 00:00:58.320 rate is this much 9000 something kg per
00:01:03.080 00:01:03.090 hour and the inlet temperature is 90
00:01:06.800 00:01:06.810 tooth degree Celsius and on the
00:01:10.310 00:01:10.320 temperature is 66 point six degrees
00:01:13.399 00:01:13.409 ashes and dry gas temperature is 58
00:01:17.359 00:01:17.369 point two four degrees Celsius and our
00:01:20.570 00:01:20.580 net is ninety fifty nine point two
00:01:25.090 00:01:25.100 degrees dashes usually we use h ta for a
00:01:31.460 00:01:31.470 formulating of course you can use the
00:01:33.679 00:01:33.689 HDFS inside the hashes but in my opinion
00:01:37.270 00:01:37.280 HR I provided you with more optimized
00:01:41.149 00:01:41.159 design than HDFS it's just my opinion
00:01:44.780 00:01:44.790 because before I compared the results
00:01:48.460 00:01:48.470 done by hgri and HDFS and then Oh
00:01:52.639 00:01:52.649 even though or process parameter is the
00:01:55.490 00:01:55.500 same but the result done by H Tara is
00:01:59.660 00:01:59.670 more optimized small smaller than one
00:02:03.109 00:02:03.119 that HDFS so I prefer using HTF for
00:02:08.240 00:02:08.250 emulating
00:02:09.169 00:02:09.179 so we need to design this Shannon
00:02:12.619 00:02:12.629 typically change
00:02:13.449 00:02:13.459 suicide is linked eg and called to
00:02:18.069 00:02:18.079 status in natural gas strike ass so her
00:02:21.250 00:02:21.260 side is Lin TJ and cold side is natural
00:02:23.890 00:02:23.900 gas okay so we know the temperature in
00:02:27.670 00:02:27.680 the temperature has side in a
00:02:29.709 00:02:29.719 temperature aside on the temperature
00:02:31.569 00:02:31.579 cooler side in the temperature call
00:02:33.580 00:02:33.590 decide on the temperature right okay
00:02:37.330 00:02:37.340 the region that I explained about manual
00:02:41.679 00:02:41.689 calculation for this heat exchanger
00:02:44.229 00:02:44.239 thermal rating if you don't know about
00:02:47.220 00:02:47.230 calculation inside the software maybe it
00:02:50.949 00:02:50.959 will take long time for you to optimize
00:02:54.640 00:02:54.650 and train an error calculation but if
00:02:59.379 00:02:59.389 you know the software how to calculate
00:03:01.809 00:03:01.819 inside and then you can finish you can
00:03:05.259 00:03:05.269 optimize faster so I would like to
00:03:08.259 00:03:08.269 explain how to calculate manually so I
00:03:12.339 00:03:12.349 think it's good for your understanding
00:03:17.430 00:03:17.440 okay first step hematite hematite there
00:03:21.849 00:03:21.859 are tons of Tama types for example PE u
00:03:25.860 00:03:25.870 PE m ty many things so for this heat
00:03:31.659 00:03:31.669 exchanger I have experience so normally
00:03:35.740 00:03:35.750 I propose some she you type or B you tie
00:03:41.399 00:03:41.409 to a client space on our experience we
00:03:45.670 00:03:45.680 can propose based on the process fluid
00:03:50.110 00:03:50.120 may be a process fluid is a toxic you
00:03:52.990 00:03:53.000 have to propose some less liquidy points
00:03:56.860 00:03:56.870 typed Amitai or you need to consider the
00:04:01.300 00:04:01.310 mechanical cleaning chemical cleaning
00:04:03.069 00:04:03.079 and maintenance you can discuss it with
00:04:06.249 00:04:06.259 a client and then you can check the spec
00:04:08.679 00:04:08.689 requirements some spec requirement don't
00:04:11.259 00:04:11.269 allow some specific Tama type like F
00:04:15.749 00:04:15.759 type so you need to check the spec
00:04:19.960 00:04:19.970 requirement and then you need to discuss
00:04:22.000 00:04:22.010 with client maybe client that they have
00:04:24.850 00:04:24.860 some there
00:04:26.159 00:04:26.169 preferred design all if they don't have
00:04:29.850 00:04:29.860 any preferred design or they don't have
00:04:33.659 00:04:33.669 any experience you can propose okay the
00:04:36.450 00:04:36.460 important thing that you have to check
00:04:38.790 00:04:38.800 is a fouling factor fouling factor
00:04:41.300 00:04:41.310 funneling factor normally the Sharon
00:04:44.580 00:04:44.590 cube was specification they mentioned
00:04:47.550 00:04:47.560 specify the filing factor for fluid or
00:04:52.159 00:04:52.169 service so this project they mentioned
00:04:58.200 00:04:58.210 the filing factor for glycol and guess
00:05:02.010 00:05:02.020 like this much so we have to follow this
00:05:08.519 00:05:08.529 falling factor right and Cuba to pattern
00:05:13.920 00:05:13.930 also maybe it depends on the mechanical
00:05:17.070 00:05:17.080 climbing if they don't have any specific
00:05:19.860 00:05:19.870 requirements as a package vendor we can
00:05:22.760 00:05:22.770 propose all we can recommend 45-degree
00:05:27.059 00:05:27.069 or tray triangle pattern like there and
00:05:32.510 00:05:32.520 tube OD also there is some spec
00:05:36.749 00:05:36.759 requirement or there is no spectra
00:05:39.329 00:05:39.339 karremans so if there is no spectra
00:05:42.959 00:05:42.969 comment for minimum ID 42 you can
00:05:47.249 00:05:47.259 propose like that or three-quarter inch
00:05:50.189 00:05:50.199 II like them just for example this
00:05:53.209 00:05:53.219 sharon tube i chose 20 just one each one
00:05:59.639 00:05:59.649 each to bow OD and one thing that you
00:06:04.499 00:06:04.509 have to check is over design at the time
00:06:07.619 00:06:07.629 fouling factor
00:06:08.689 00:06:08.699 sometimes spec requirement say 10
00:06:11.730 00:06:11.740 percent did you imagine on the flow rate
00:06:14.189 00:06:14.199 or heat duty or some spec mention over
00:06:21.209 00:06:21.219 design should be put on the surface area
00:06:25.529 00:06:25.539 10 percent over tea time and the surface
00:06:28.079 00:06:28.089 area like this so you need to check the
00:06:30.300 00:06:30.310 spec requirement the first filing factor
00:06:33.240 00:06:33.250 over the giant or a minimum
00:06:36.750 00:06:36.760 to ID or to pattern you need to check so
00:06:41.650 00:06:41.660 you have to follow okay then we have to
00:06:44.850 00:06:44.860 determine how many passes for each side
00:06:48.190 00:06:48.200 are required like a tube side how many
00:06:51.430 00:06:51.440 pass or share side how many passes
00:06:53.860 00:06:53.870 record a G already you know if there is
00:06:58.240 00:06:58.250 a co-current flow and counter current
00:07:00.700 00:07:00.710 flow we cannot use air MTD so we have to
00:07:07.510 00:07:07.520 use our MTD x ft correctly the factor
00:07:13.690 00:07:13.700 for the temperature if there is a
00:07:16.270 00:07:16.280 current flow and counter current flow we
00:07:21.070 00:07:21.080 can use this graph so we can check we
00:07:26.140 00:07:26.150 can know the ft so this is a 1 shall
00:07:33.730 00:07:33.740 pass two or more to pass graph so we can
00:07:37.990 00:07:38.000 obtain this temperature difference
00:07:40.270 00:07:40.280 factor ft we can get this R and s they
00:07:47.350 00:07:47.360 some hot high temperature and cold say
00:07:50.620 00:07:50.630 temperature so based on this temperature
00:07:55.930 00:07:55.940 equation we can get this s and R and
00:07:59.620 00:07:59.630 then we can get this F T so this f th
00:08:05.560 00:08:05.570 should be higher than 0.8 if this F T
00:08:10.170 00:08:10.180 less than 0.8 we have to find another
00:08:13.360 00:08:13.370 sorry another pass maybe for pass you to
00:08:18.160 00:08:18.170 pass or more to surpass because there
00:08:22.030 00:08:22.040 are another this graph depends on the
00:08:25.360 00:08:25.370 discus and to pass so you need to find
00:08:30.130 00:08:30.140 how many passes for each side are
00:08:33.070 00:08:33.080 required based on this T ft is if the F
00:08:39.460 00:08:39.470 T is less than 0.8 that means the
00:08:41.680 00:08:41.690 efficiency is very low so you have to
00:08:44.650 00:08:44.660 increase the ft okay so we can
00:08:50.680 00:08:50.690 determine the path so in this case we
00:08:54.740 00:08:54.750 can determine society's one pass to
00:09:00.500 00:09:00.510 Saudis to passes so we can recommend to
00:09:06.640 00:09:06.650 client okay
00:09:08.480 00:09:08.490 we would like to use GE she you type
00:09:12.910 00:09:12.920 like this you know this video field
00:09:19.400 00:09:19.410 equation right this surface area and
00:09:21.950 00:09:21.960 this is a hip flow and this is
00:09:26.260 00:09:26.270 coefficient of heat transfer design this
00:09:30.530 00:09:30.540 T is design and the delta T is our MTD x
00:09:35.450 00:09:35.460 ft corrected a temperature difference so
00:09:40.250 00:09:40.260 first we have to assume this coefficient
00:09:44.000 00:09:44.010 design coefficient you can assume this
00:09:49.120 00:09:49.130 design coefficient based on this table
00:09:52.670 00:09:52.680 like the organics or heavy organics
00:09:56.720 00:09:56.730 because our hot fluid is TG and then
00:10:03.080 00:10:03.090 cold sighs gasps so we can just overall
00:10:06.890 00:10:06.900 design coefficient 10 to 14 so I just
00:10:13.190 00:10:13.200 assume 14 14 okay so we know this heat
00:10:19.730 00:10:19.740 flow right
00:10:20.720 00:10:20.730 he flow is a mass flow rate multiplied
00:10:23.870 00:10:23.880 heat capacity multiplied by temperature
00:10:27.380 00:10:27.390 difference okay so heat flow of the hot
00:10:31.580 00:10:31.590 side is the same as the hip flow of the
00:10:34.400 00:10:34.410 cold side right so we can calculate this
00:10:37.220 00:10:37.230 heat flow then we assume this on 14
00:10:40.340 00:10:40.350 right 14 here and then we can calculate
00:10:44.450 00:10:44.460 our MTD multiplied or corrected and MTD
00:10:48.200 00:10:48.210 right MTD then we can calculate surface
00:10:52.760 00:10:52.770 area okay so we can calculate this
00:10:57.350 00:10:57.360 surface area recall the surface area for
00:10:59.780 00:10:59.790 this heat flow based on this awesome
00:11:03.230 00:11:03.240 Co efficient design 206 square feet we
00:11:07.400 00:11:07.410 need right and then based on this table
00:11:12.050 00:11:12.060 we can know the surface area per feet
00:11:16.690 00:11:16.700 so our two bodies one inch right we we
00:11:22.490 00:11:22.500 just determined it is Vonage right so
00:11:25.450 00:11:25.460 one inch and this is surface area square
00:11:34.850 00:11:34.860 feet so this means the tooth one feet
00:11:44.050 00:11:44.060 this surface area zero point two six one
00:11:48.800 00:11:48.810 five square feet right and then we can
00:11:57.760 00:11:57.770 get this number of the tooth we can
00:12:04.900 00:12:04.910 divide by this surface area and you can
00:12:08.540 00:12:08.550 get the tube number so 206 square feet
00:12:14.390 00:12:14.400 divided by this much of this area ah
00:12:18.680 00:12:18.690 before that we just assume this to be
00:12:22.610 00:12:22.620 length first just awesome maybe we need
00:12:27.310 00:12:27.320 this space so we need to put this heat
00:12:30.920 00:12:30.930 exchanger so we can assume okay
00:12:34.730 00:12:34.740 our tube lengths supposed to be a six
00:12:37.910 00:12:37.920 point five feet and you can start phone
00:12:41.240 00:12:41.250 stats from this tube length so you can
00:12:44.750 00:12:44.760 put this one and then any way you can
00:12:47.360 00:12:47.370 get this number of the tube 121 tubes we
00:12:51.740 00:12:51.750 need based on these 206 square feet then
00:12:58.160 00:12:58.170 for this table we can get the shell ID
00:13:04.210 00:13:04.220 how to know okay let's check okay one
00:13:07.790 00:13:07.800 inch OD right oho D and our for example
00:13:12.380 00:13:12.390 we will go with triangular pitch
00:13:15.850 00:13:15.860 triangular pitch like this right then
00:13:21.250 00:13:21.260 how many cube numbers we need 121 right
00:13:25.570 00:13:25.580 so we can choose a similar number we can
00:13:29.889 00:13:29.899 choose this number 9 this one is to pass
00:13:34.800 00:13:34.810 to past if this much right and then we
00:13:39.639 00:13:39.649 can know this shell ID this is social ID
00:13:44.259 00:13:44.269 right so based on this one the to pass
00:13:50.650 00:13:50.660 to pass right and then to me number 120
00:13:55.590 00:13:55.600 150 to then with this number of the
00:13:59.590 00:13:59.600 tooth we can put the shell ID 19 inch so
00:14:08.500 00:14:08.510 we know now MTD and Q and a we can
00:14:15.759 00:14:15.769 calculate the a again based on this one
00:14:17.980 00:14:17.990 right based on cube number 152 and shall
00:14:25.870 00:14:25.880 ID 19 inch name based on this one we can
00:14:32.110 00:14:32.120 calculate again the surface area and
00:14:35.350 00:14:35.360 then based on this one we can know
00:14:38.370 00:14:38.380 surface area MTD Q then we can pack a
00:14:42.250 00:14:42.260 plate the coefficients this design and
00:14:49.780 00:14:49.790 then we can compare because we assumed
00:14:53.350 00:14:53.360 this 40 right then we can compare this
00:14:56.560 00:14:56.570 one then next we have to check pressure
00:15:03.730 00:15:03.740 drop of course I didn't mention when you
00:15:09.490 00:15:09.500 check the spec we have to check filing
00:15:12.040 00:15:12.050 factor over design or and this kind of
00:15:15.819 00:15:15.829 table minimum requirements
00:15:18.040 00:15:18.050 I do D or 2 pattern also we need to
00:15:21.519 00:15:21.529 check the pressure drop allow fresh trap
00:15:26.460 00:15:26.470 if you look at this one I mentioned this
00:15:28.680 00:15:28.690 one cube side allowable pressure drop is
00:15:31.460 00:15:31.470 0.03 so this person drops to not exceed
00:15:37.490 00:15:37.500 0.03
00:15:38.670 00:15:38.680 this is requirement based on hydro
00:15:41.040 00:15:41.050 calculation and for the cube side for
00:15:45.120 00:15:45.130 gas side the pressure drop is 0.5 Wow
00:15:48.270 00:15:48.280 so we need to meet this requirement
00:15:50.030 00:15:50.040 right so we assumed this coefficient
00:15:56.790 00:15:56.800 design and based on this one we
00:15:59.990 00:16:00.000 calculated the shell ID and Q length and
00:16:03.780 00:16:03.790 the number of the tubes right based on
00:16:06.360 00:16:06.370 this information we have to calculate
00:16:08.010 00:16:08.020 this tube side the pressure drop based
00:16:11.130 00:16:11.140 on this equation this is just no more a
00:16:15.480 00:16:15.490 pressure drop across the tube side and
00:16:17.370 00:16:17.380 this one is the change of the traction
00:16:20.280 00:16:20.290 introduced on additional pressure drop
00:16:22.950 00:16:22.960 so the total pressure drop is this much
00:16:26.640 00:16:26.650 Plus this much and we need to calculate
00:16:29.250 00:16:29.260 also share side pressure drop preside
00:16:32.730 00:16:32.740 the pressure drop equation this one so
00:16:35.130 00:16:35.140 we can calculate manually by hand okay
00:16:41.630 00:16:41.640 so I will summarize the step first
00:16:45.810 00:16:45.820 assume the coefficient of the heat
00:16:48.210 00:16:48.220 transfer this one then based on this one
00:16:52.670 00:16:52.680 we can calculate this surface area
00:16:56.010 00:16:56.020 recall the surface area we can calculate
00:16:59.220 00:16:59.230 the the number of the tubes right based
00:17:03.180 00:17:03.190 on this area right and then we can
00:17:05.640 00:17:05.650 obtain the shell ID with this table
00:17:09.240 00:17:09.250 right shall I do we can obtain easily
00:17:15.660 00:17:15.670 right we do need to put like anger it's
00:17:21.300 00:17:21.310 very difficult to write if you do this
00:17:23.790 00:17:23.800 one
00:17:24.240 00:17:24.250 CalFire it takes long time so you need
00:17:27.090 00:17:27.100 to use this table and then you can get
00:17:29.420 00:17:29.430 the shell ID easily based on this tube
00:17:32.400 00:17:32.410 number and this tube patterns right
00:17:38.360 00:17:38.370 okay now you can get the shrill idea and
00:17:42.900 00:17:42.910 then you have the backlit this
00:17:46.460 00:17:46.470 coefficient again calculate a new
00:17:49.250 00:17:49.260 coefficient again based on new size
00:17:52.080 00:17:52.090 right shall I do now you know shall ID
00:17:55.530 00:17:55.540 and tooth number numbers right so you
00:18:01.020 00:18:01.030 can calculate this one and then also
00:18:03.120 00:18:03.130 calculate the pressure drop is on this
00:18:05.070 00:18:05.080 size then with the furia equation you
00:18:11.640 00:18:11.650 can calculate Delta factor and you have
00:18:17.730 00:18:17.740 to compare this study factor to hourly
00:18:21.720 00:18:21.730 call the dot factor as I told you we
00:18:25.680 00:18:25.690 need to check this study factor i our he
00:18:29.400 00:18:29.410 returned to design meet this third
00:18:31.140 00:18:31.150 factor
00:18:38.270 00:18:38.280 okay based on this calculation we can
00:18:40.430 00:18:40.440 calculate a dart factor right and then
00:18:43.430 00:18:43.440 we can compare the recorded of the
00:18:45.200 00:18:45.210 factor if this Ricardo dot vector is
00:18:48.920 00:18:48.930 bigger than chocolate art factor we have
00:18:51.740 00:18:51.750 to decrease the this.ud previously we
00:18:57.380 00:18:57.390 assumed 14 and then we need to reduce
00:19:01.100 00:19:01.110 like a 30 for example and then we have
00:19:04.160 00:19:04.170 to calculate our gain
00:19:05.270 00:19:05.280 if you decrease this coefficient from 40
00:19:10.190 00:19:10.200 to the 30 that means our surface surface
00:19:14.150 00:19:14.160 area should be increased right then we
00:19:18.320 00:19:18.330 have to calculate again this is try on
00:19:20.860 00:19:20.870 trial and error calculation finally this
00:19:26.450 00:19:26.460 total factor calculate the two factor
00:19:29.030 00:19:29.040 higher than because that factor and we
00:19:31.970 00:19:31.980 can check to over-design check if it's
00:19:34.790 00:19:34.800 all booty 10 is a higher than 10 percent
00:19:37.160 00:19:37.170 it's okay right and then also if the
00:19:39.890 00:19:39.900 Delta P on the tube side the side is
00:19:43.270 00:19:43.280 math based on as per this design
00:19:48.320 00:19:48.330 criteria and then we can go with the
00:19:52.060 00:19:52.070 design and we can stop the train and
00:19:54.770 00:19:54.780 articulation this is the procedure I
00:19:58.880 00:19:58.890 don't know if you understand where but
00:20:02.420 00:20:02.430 this is like a concept I think it's
00:20:06.110 00:20:06.120 enough for you to understand this kind
00:20:08.120 00:20:08.130 of step concept and then you can use the
00:20:11.480 00:20:11.490 HRI
00:20:12.110 00:20:12.120 okay let's do H Terek equation together
00:20:17.740 00:20:17.750 okay this is the heat exchanger so this
00:20:20.870 00:20:20.880 is a cube side to side gas a net right
00:20:25.220 00:20:25.230 can you see Cassie net and guess on that
00:20:28.510 00:20:28.520 this is a glycol Anette glycol all net
00:20:35.450 00:20:35.460 [Music]
00:20:41.700 00:20:41.710 Nikita changer okay okay so generate the
00:20:47.140 00:20:47.150 properties and transport it down then
00:20:52.360 00:20:52.370 like this so you need to put the type B
00:20:58.539 00:20:58.549 II she she you time like this right so
00:21:06.580 00:21:06.590 clarinet Chasse
00:21:08.470 00:21:08.480 Cassie net to side so this one you can
00:21:15.730 00:21:15.740 just put 200 120 101 you an ID 19-inch
00:21:27.820 00:21:27.830 right 19 inches like 500
00:21:37.380 00:21:37.390 00:21:43.970 00:21:43.980 ID is 500 lengths to meet this much
00:22:00.120 00:22:00.130 and pressure drop lower jaw point 0.032
00:22:09.180 00:22:09.190 side 0.5 fouling factory farming factory
00:22:20.560 00:22:20.570 site Kalpana teru teru teru 3 6 2 side
00:22:26.410 00:22:26.420 job one carriage f015 spacing
00:22:49.210 00:22:49.220 sure cyan't reach
00:23:05.080 00:23:05.090 run
00:23:09.780 00:23:09.790 then if you look at this home over
00:23:11.910 00:23:11.920 design is - right so you have to
00:23:14.250 00:23:14.260 increase increase some surface area
00:23:17.190 00:23:17.200 right also increase surface area if you
00:23:21.780 00:23:21.790 delete this tube number and the H Tara
00:23:24.660 00:23:24.670 will calculate the maximum tube numbers
00:23:31.040 00:23:31.050 okay this now over to join 0.41 right
00:23:35.570 00:23:35.580 then you you need to check the check lay
00:23:38.400 00:23:38.410 till pressure drop design so to said is
00:23:41.840 00:23:41.850 1.9 is higher than our a lower pressure
00:23:48.780 00:23:48.790 drop so you need to increase the it6
00:24:06.250 00:24:06.260 so now is decreased what's still not
00:24:09.340 00:24:09.350 enough right we have to decrease more
00:24:14.400 00:24:14.410 chrismole 650
00:24:29.730 00:24:29.740 700
00:24:41.590 00:24:41.600 if you you have over design this much so
00:24:47.469 00:24:47.479 this is not to optimize the one so
00:24:50.499 00:24:50.509 anyway you have to decrease this over
00:24:53.950 00:24:53.960 design down to 10% but you need to make
00:24:58.330 00:24:58.340 it this calculate the pressure drop
00:25:01.629 00:25:01.639 below 0.5 so you have to try another
00:25:06.479 00:25:06.489 calculation okay okay thank you for
00:25:14.499 00:25:14.509 watching bye
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