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Shell and Tube Type Heat Exchanger. _Engineer's Academy

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Language: en

00:00:00.000
a shell and tube heat exchanger is a
00:00:02.090 00:00:02.100 class of heat exchanger designs it is
00:00:05.420 00:00:05.430 the most common type of heat exchanger
00:00:07.059 00:00:07.069 which is used in oil refineries and
00:00:09.890 00:00:09.900 other large chemical processes and it is
00:00:12.290 00:00:12.300 suited for high pressure application as
00:00:14.620 00:00:14.630 the name implies this type of heat
00:00:17.599 00:00:17.609 exchanger consists of a shell with a
00:00:19.640 00:00:19.650 bundle of tubes inside it one fluid runs
00:00:23.210 00:00:23.220 through the tubes and another fluid
00:00:25.340 00:00:25.350 flows over the tubes to transfer heat
00:00:28.460 00:00:28.470 between the two fluids the set of tubes
00:00:31.609 00:00:31.619 is called a tube bundle and may be
00:00:33.830 00:00:33.840 composed of several types of tube that
00:00:36.380 00:00:36.390 is plain longitudinal or fin type two
00:00:40.190 00:00:40.200 fluids of different starting
00:00:41.720 00:00:41.730 temperatures flow through the heat
00:00:43.670 00:00:43.680 exchanger one flows through the tubes
00:00:46.610 00:00:46.620 and the other flows outside of the tubes
00:00:48.860 00:00:48.870 but inside the shell heat is transferred
00:00:52.069 00:00:52.079 from one fluid to the other through the
00:00:53.990 00:00:54.000 tube walls the fluids can be either
00:00:56.900 00:00:56.910 liquids or gases on either the shell or
00:00:59.389 00:00:59.399 tube side in order to transfer heat
00:01:02.540 00:01:02.550 efficiently a large heat transfer area
00:01:04.969 00:01:04.979 should be used leading to the use of
00:01:07.310 00:01:07.320 many tubes in this way waste heat can be
00:01:10.490 00:01:10.500 put to use this is an efficient way to
00:01:13.520 00:01:13.530 conserve energy heat exchangers with
00:01:16.880 00:01:16.890 only one phase on each side can be
00:01:18.800 00:01:18.810 called one phase or single phase heat
00:01:21.050 00:01:21.060 exchangers two phase heat exchangers can
00:01:24.740 00:01:24.750 be used to heat a liquid to boil it into
00:01:26.719 00:01:26.729 a gas sometimes called boilers or cool a
00:01:29.840 00:01:29.850 vapor to condense a tit into a liquid
00:01:31.850 00:01:31.860 which is called as condenser with the
00:01:34.789 00:01:34.799 phase change usually occurring on the
00:01:36.800 00:01:36.810 shell side boilers in the steam engine
00:01:39.859 00:01:39.869 locomotives are typically large usually
00:01:42.260 00:01:42.270 cylindrically shaped shell and tube heat
00:01:44.499 00:01:44.509 exchangers the design standard which is
00:01:48.139 00:01:48.149 used to manufacture the heat exchanger
00:01:50.389 00:01:50.399 is team a ninth edition 2009 that is
00:01:54.679 00:01:54.689 tubular exchanger manufacturers
00:01:56.840 00:01:56.850 association also another one is en 1 3 4
00:02:01.280 00:02:01.290 4 5 2 3 that is unfired pressure vessels
00:02:04.280 00:02:04.290 or else a SME boiler and pressure vessel
00:02:07.940 00:02:07.950 code can be used there are many
00:02:10.699 00:02:10.709 variations on the shell and tube design
00:02:13.790 00:02:13.800 typically the ends of each tube are
00:02:16.100 00:02:16.110 connected to plenums or sometimes called
00:02:18.260 00:02:18.270 water boxes through holes in tube sheets
00:02:22.210 00:02:22.220 the tubes may be straight or bent in the
00:02:25.100 00:02:25.110 shape of you called view tube heat
00:02:27.140 00:02:27.150 exchanger in nuclear power plants called
00:02:30.560 00:02:30.570 pressurized water reactors large heat
00:02:33.410 00:02:33.420 exchangers called steam generators are
00:02:35.840 00:02:35.850 two-faced shell and tube heat exchangers
00:02:39.200 00:02:39.210 typically you tubes they are used to
00:02:42.260 00:02:42.270 boil water recycled from a surface
00:02:44.360 00:02:44.370 condenser into steam to drive turbine to
00:02:47.030 00:02:47.040 produce power most shell and tube heat
00:02:49.850 00:02:49.860 exchangers are either 1 2 or 4 pass
00:02:53.120 00:02:53.130 designs on the tube side this refers to
00:02:56.360 00:02:56.370 the number of times the fluid in the
00:02:58.250 00:02:58.260 tubes passes through the fluid in the
00:03:00.170 00:03:00.180 shell in a single pass heat exchanger
00:03:03.260 00:03:03.270 the fluid goes in one end of each tube
00:03:05.330 00:03:05.340 and out the other surface condensers in
00:03:08.660 00:03:08.670 power plants are often one pass straight
00:03:10.910 00:03:10.920 tube heat exchangers 2 and 4 pass
00:03:14.270 00:03:14.280 designs are common because the fluid can
00:03:16.670 00:03:16.680 enter and exit on the same side
00:03:18.880 00:03:18.890 this makes the construction much simpler
00:03:22.030 00:03:22.040 there are often baffles directing flow
00:03:24.860 00:03:24.870 through the shell side so the fluid does
00:03:26.840 00:03:26.850 not take a shortcut through the shell
00:03:28.670 00:03:28.680 side leaving ineffective low flow
00:03:30.650 00:03:30.660 volumes these are generally attached to
00:03:33.860 00:03:33.870 the tube bundle rather than a shell in
00:03:35.810 00:03:35.820 order that the bundle is still removable
00:03:38.000 00:03:38.010 for maintenance counter current heat
00:03:40.760 00:03:40.770 exchangers are most efficient because
00:03:43.160 00:03:43.170 they allow the highest log mean
00:03:44.750 00:03:44.760 temperature difference between the hot
00:03:46.490 00:03:46.500 and cold streams many companies however
00:03:49.880 00:03:49.890 do not use to pass heat exchangers with
00:03:52.610 00:03:52.620 a you tube because they can break easily
00:03:54.860 00:03:54.870 in addition to being more expensive to
00:03:57.110 00:03:57.120 build often multiple heat exchangers can
00:04:00.530 00:04:00.540 be used to stimulate the counter current
00:04:02.630 00:04:02.640 flow of single large heat exchanger the
00:04:05.900 00:04:05.910 simple design of shell and tube heat
00:04:07.699 00:04:07.709 exchanger makes it an ideal cooling
00:04:10.130 00:04:10.140 solution for wide variety of
00:04:11.840 00:04:11.850 applications one of the most common
00:04:15.050 00:04:15.060 application is the cooling of hydraulic
00:04:17.420 00:04:17.430 fluid and oil in engines transmission
00:04:19.880 00:04:19.890 and hydraulic power packs so guys that
00:04:23.510 00:04:23.520 was all about the shell and tube type
00:04:25.520 00:04:25.530 heat exchangers
00:04:27.200 00:04:27.210 like our video and subscribe our channel
00:04:29.870 00:04:29.880 for more educational videos thanks for
00:04:33.080 00:04:33.090 watching happy learning
00:04:35.940 00:04:35.950 [Music]

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