Shell and Tube Heat Exchangers

Glass Shell and Tube Heat Exchangers are of recent development. These heat exchangers can be used for condensation of vapours, vaporisation, cooling and heating of liquids.

The Shell and Tube Heat Exchangers are available in various combinations of Glass/Metal/FRP in shell or headers. Glass shells are constructed using standard glass components like Pipe Section, Tee, Cross etc. Metal shells are generallyconstructed of MS in one piece.

Shell and Tube Heat Exchangers consists of a cylindrical shell which houses a glass tube bundle. Tubes are sealed with shell with the help of PTFE tube sheets. Each tube is indiidually sealed by iton 'O' Ring in tube sheets at both the ends. Baffles are proided in the shell to maintain state of turbulence of fluid as well as to hold the tubes.

Glass Shell and Tube Heat Exchangers are of recent development. These heat exchangers can be used for condensation of vapour, vaporization, cooling and heating of liquids.

The Shell and Tube Heat Exchangers are available in various combinations of Glass/Metal/FRP in shell or headers. Glass shells are constructed using standard glass components like Pipe Section, Tee, Cross etc. Metal shells are generally constructed of MS in one piece.

Shell and Tube Heat Exchangers consists of a cylindrical shell which houses a glass tube bundle. Tubes are sealed with shell with the help of PTFE tube sheets. Each tube is individually sealed by iton 'O' Ring in tube sheets at both the ends. Baffles are provided in the shell to maintain state of turbulence of fluid as well as to hold the tubes.

Shell and Tube Heat Exchangers have come out to be more advance and beneficial for its following advantages:

• Bigger heat transfer area in one unit.
• Less pressure drop.
• Stuffing box sealing allows easy tube replacement.
• Less maintainenance.

Technical Information
All the Shell and Tube Heat Exchangers are constructed with 12 mm OD, 1.5 mm thick glass tubes. These tubes are arranged in triangular pitch of 21 mm. Baffles are provided with 30% cut at a distance of approximately equal to inner diameter of shell. Generally, PTFE baffles are used in Glass shells and PP baffles in Metal Shells.

Shell and Tube Heat Exchanger can be operated within a temperature range of -40^oC to 150^oC on either side. However, differential temperature should not exceed 120^oC at any point. All the Shell and Heat exchangers can be use pre-dominantly under full vacuum, provided differential pressure does not exceed 3 bar g.

The range of overall heat tranfer co-eeficient in the Shell and Tube Heat Exchangers are considered as follows:

Condensation	:	Water - Water	:	600 - 900 Kcal/m2,h,oC
Condensation	:	Water - Organic Solvents	:	400 - 600 Kcal/m2,h,oC
Evaporation	:	Steam - Water	:	500 - 900 Kcal/m2,h,oC
Cooling	:	Water - Water	:	500 - 500 Kcal/m2,h,oC
Cooling	:	Water - Organic Solvents	:	250 - 600 Kcal/m2,h,oC
Cooling	:	Water - Oil	:	75 - 350 Kcal/m2,h,oC
Cooling	:	Water - Air	:	25 - 250 Kcal/m2,h,oC

DN	No. of Tubes	Cross Section Cm2		Max. operating Pressure
		Shell Side	Tube Side	Tube Side	Shell Side
					Glass	Metal
80	7	23	5	3.0	3.0	3.0
100	19	43	12	2.0	2.0	2.0
150	37	93	23	1.5	1.5	2.0
225	73	189	46	1.0	1.0	2.0
300	151	348	96	0.7	0.7	2.0

Glass Shell

Cat. Ref.	HTA m2	DN	DN1	DN2	DN3	L	L1	L2	P	T	S	H	B	Baffles
RGC6/1	1	150	50	25	25	1050	800	500	250	250	25	125	148	4
RGC6/1.5	1.5	150	50	25	25	1400	1150	850	600	250	25	125	159	6
RGC6/2	2.2	150	80	50	50	1900	1650	1300	1000	300	25	125	135	10
RGC6/3	2.9	150	80	50	50	2400	2150	1800	1500	300	25	125	156	12
RGC6/4	4.1	225	80	50	25	1900	1550	1200	900	300	25	175	223	6
RGC6/5	5.2	225	100	80	50	2300	1950	1450	1000	450	25	175	192	8
RGC6/6	6.6	225	100	80	50	2800	2450	1950	1500	450	25	175	205	10
RGC12/8	8.5	300	100	80	25	1950	1550	1100	700	400	25	200	332	4
RGC12/11	10.8	300	150	80	50	2350	1950	1450	1000	450	25	200	259	6
RGC12/14	13.7	300	150	80	50	2850	2450	1950	1500	450	25	200	256	8
RGC12/16	16.5	300	150	80	50	3350	2950	2450	2000	450	25	200	328	8
RGC12/22	22.2	300	150	80	50	4350	4350	3450	3000	450	25	220	299	12

Metal Shell

Cat. Ref.	HTA m2	DN	DN1	N1	N2	L	L1	L2	P	S	H	K	B	Baffles
RGC6/1	1	150	50	25	25	1050	800	550	750	25	125	350	104	6
RGC6/1.5	1.5	150	50	25	25	1400	1150	900	1100	25	125	600	124	8
RGC6/2	2.2	150	80	50	25	2000	1650	1350	1600	25	175	1000	144	10
RGC6/3	2.9	150	80	50	25	2500	2150	1850	2100	25	175	1200	138	14
RGC6/4	4.1	225	80	50	50	1900	1550	1250	1500	25	175	800	171	8
RGC6/5	5.2	225	100	80	50	2350	1950	1600	1900	25	200	1000	168	10
RGC6/6	6.6	225	100	80	50	2850	2450	2100	2400	25	200	1500	183	12
RGC12/8	8.5	300	100	80	50	2000	1550	1200	1500	25	225	800	223	6
RGC12/11	10.8	300	150	80	50	2550	1950	1600	1900	25	300	1000	30	6
RGC12/14	13.7	300	150	80	50	3050	2450	2100	2400	25	300	1500	288	8
RGC12/16	16.5	300	150	80	50	3550	2950	2600	2900	25	300	2000	279	10
RGC12/22	22.2	300	150	80	50	4550	3950	3600	3900	25	300	2600	270	12

Each Shell and Tube Heat Exchanger is supplied with the following spares:-

• DN 150 - 5 tubes, 4 plugs, 4 brushes, 4 'O' rings, 1 key
• DN 225 - 10 tubes, 6 plugs, 6 brushes, 6 'O' rings, 1 key
• DN 300- 15 tubes, 8 plugs, 8 brushes, 8 'O' rings, 1 key

Orientation of branches, if other than above, should be specified in order.

Following accessories are recommended to use with Shell and Tube Heat Exchanger:

• PTFE bellows on all nozzles.
• Pressure relief valve.
• Supporting Clamps.

SUPPORTING CLAMPS
These clamps are used for horizontal installation of shell and tube heat exchangers (glass shell).

Cat. Ref.	DN	L	H	T	d
RSP6/30	150	150	487	10	30
RSP9/30	225	220	525	10	30
RSP12/30	300	300	565	10	30