Shell and Tube Replacement

PRAGYA ASSOCIATES is an Authorized Distributor of Alfa Laval India Pvt. Ltd and delivering Plate Heat Exchangers, Centrifuge Separators, spare parts, and services to various Industries in Rajasthan. At PPRAGYA ASSOCIATES, our commitment to improvements through smart design & implementation makes us an ideal business partner for you. We offer a complete solution for heat transfer, separation on your fingertips. we are a customer-focused company that supplies products and solutions that help you become more productive and competitive.

Shell and Tube Replacement has been around for ages and is widely used in many industries. Their popularity comes from its simple construction, manufacturability by anyone, made from any simple material, made to any size, and to withstand any temperature or pressure.

The shell side usually contains the clean fluid, as the tube side is comparatively easier to clean by manual rodding. Due to these difficulties, S&T heat exchangers are seldom fully maintained, and fouling grows to such levels that it is faster and easier to replace them. Replacement with a gasket plate heat exchanger (GPHE) can be as low as 1/3rd of the cost, depending on the material of construction.

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Typical Construction of Shell and Tube Heat Exchangers

A short and fat S&T is typical for the lowest thermal efficiency and performance. Approach temperatures for the two fluids cannot be better than 10°C and typically for oil cooling or steam applications with large diameter tubes and single pass.

Gasketed Plate Heat Exchanger for Replacement

Poor thermal performance from S&T heat exchangers is mainly due to the flow regime of co-current flow. The best approach temperatures reachable with most S&T heat exchangers is 5°C or more. Hence, low thermal efficiency and low-pressure drop type plates are best suited for replacement. These GPHEs are short, wide, and have large channel gaps, e.g. M3, M6M, M10M.