Shell & Tube Heat Exchanger

Shell and tube heat exchangers provide a large surface area, ensuring efficient heat transfer and compact design. They are extensively used in industries for cooling, heating, condensation, and evaporation. GOEL is a leader in the glass shell and tube heat exchangers field in India, and its products are highly regarded in the market.

Salient Features of Shell & Tube Heat Exchanger :

• Universal corrosion resistance an excellent alternative to expensive MOCs like graphite, hastelloy, copper titanium, tantalum and other exotic metals.
• Excellent heat transfer as fouling does not occur on smooth glass surfaces.
• Flexibility of installation vertical/horizontal.
• Easy replacement of tubes for repair and cleaning.
• Available in wide range of HTAs.
• Ease of installation due to light weight.
• Economical
• Suitable for applications where large HTAs are required in limited space.

Advantages of Shell and Tube Heat Exchanger Over Conventional Coil Type Heat Exchangers :

• The overall heat transfer coefficient in a shell and tube heat exchanger is approximately three times higher than that in a coil type heat exchanger.
• The pressure drop in a shell and tube heat exchanger is minimal, whereas in the coil side of a coil type heat exchanger, it can be 2-3 kg/cm².
• For applications requiring larger heat transfer areas, the shell and tube heat exchanger is the only viable option.

Construction Features of Shell & Tube Heat Exchanger :

Each glass tube is individually sealed into the PTFE tube sheet using specialized PTFE sockets and packing. This unique ferrule-type sealing arrangement allows for easy replacement and cleaning of the tubes. Baffles on the shell side enhance heat transfer by increasing turbulence. For more construction details, please refer to the diagram.

• The Made from SCHOTT DURAN.
• Joint less tubes offer better pressure rating

TYPE:

Three basic versions * are available :

Material Of Construction of Shell & Tube Heat Exchanger
Model	Shell	Tube	Header	Duty
RGG	Glass	Glass	Glass	For heat transfer between two aggressive media.
RGM	Glass	Glass	Steel/FRP	For heat transfer between aggressive media in shell & non-aggressive media in tubes.
RMG	Steel/FRP	Glass	Glass	For heat transfer between aggressive media in tubes & non-aggressive media in shell
* GOEL provides assistance to clients for selecting the right model for specific duty.

* GOEL provides assistance to clients for selecting the right model for specific duty.

Dimensional Specifications of Shell and Tube Heat Exchanger :

Cat.Ref. RGG/RMG	6/3	6/4	6/5	6/6	9/6	9/8	9/10	9/12	12/12	12/16	12/21	12/25
Area (m2)	3	4	5	6	6	8	10	12	12	16	21	25
DN	150				225				300
DN1	80				100				150
DN2	50				80				80
DN3	25				40				40
DN4	50				50				50
H1	175				250				300
H2	150				200				250
L	2500	3100	3700	4300	2620	3220	3820	4520	2550	3150	3950	4550
L1	1900	2500	3100	3700	1900	2500	3100	3800	1800	2400	3200	3800
L2	150	150	150	150	225	225	225	225	225	225	225	225
L3	1600	2200	2800	3400	1450	2050	2650	3350	1350	1950	2750	3350
L4	250	250	250	250	300	300	300	300	300	300	300	300
L5	125	125	125	125	175	175	175	175	175	175	175	175
L6	1980	2580	3180	3780	2000	2600	3200	3900	1930	2530	3330	3930
T	50				60				75
No. of Tubes	37				73				151
No. of Baffles	11	15	19	23	7	9	13	17	5	7	9	11

Shell & Tube Heat Exchanger Range of Applications :

• Permissible temperature range for both shell and tube sides: -40°C to 150°C.
• Maximum permissible temperature difference between shell and tube sides: 120°C.
• All sizes and models are suitable for full vacuum on both sides. Maximum limiting pressures are tabulated below:

		Maximum Permissible Pressure Range, Kg/cm2(g)
Model	Side	150DN	225DN	300DN
RGG	Shell Tube	2.0 2.0	1.0 1.0	1.0 1.0
RGM	Shell Tube	2.0 3.5	1.0 3.5	1.0 3.5
RMG	Shell Tube	3.5 2.0	3.5 1.0	3.5 1.0

The mentioned application ranges are acceptable limiting values. For each specific case, GOEL recommends the permissible operating data based on the relationships between pressure and temperature, as well as size and model.

Shell and Tube Heat Exchanger Performance & Design Data :

The shell and tube heat exchanger offers a significant advantage with its high heat transfer performance. The relationship between heat transfer and flow velocity is clearly illustrated in the diagram.

Upon receiving the operating data from the client, we select the most suitable shell and tube heat exchanger. This precise design, coupled with the highest quality assurance, ensures both economic efficiency and operational reliability for the user.

For approximate sizing, typical heat transfer coefficients are provided below:

		U-Values
Media	Use	kcal/m2hrk	W/m2k300
DN
Steam water	condensation	350-550	410-640
Water – water	cooling	250-350	290-410
Water – air	cooling	30-60	35-70

Download PDF