Fixed Tube Sheet Heat Exchangers Manufacturer INDIA
A Fixed Tube Sheet heat exchanger is the most common type heat exchanger in all Industries. Mostly used in higher-pressure & Higher Temperature applications. Fixed tube Sheet heat exchangers are the one that are very much used in process chemical industries & refinery services, as there is absolutely no chance for intermixing fluids. This type heat exchanger is employed where even slightest intermixing fluids can not be tolerated. A ?xed-tubesheet heat exchanger has straight tubes that are secured at bothends to tubesheets welded to the shell. The construction may have removable channelcovers , bonnet-type channel covers , or integral tubesheets. The principal advantage the ?xedtubesheet construction is its low cost because its simple construction. In fact,the ?xed tubesheet is the least expensive construction type, as long as no expansion jointis required.
The Tube sheets at both ends the fixed tube-sheet heat exchanger are connected & fixed with the shell by means the welding method. Sixed tube-sheet type heat exchanger features simple & compact structure, & low manufacturing cost for the same diameter shell, the biggest number caladria is available in tubular heat exchangers is widely applied in engineering. The Fixed tube-sheet heat exchanger are that shell pass cannot be cleaned with the mechanical method & the maintenance is difficult. The Fixed tube -sheet heat exchanger is applicable to all services where the temperature difference between the shell & tube is small, the temperature difference is slightly great but the pressure shell pass is not high with media in the shell pass not easy to scale, or the shell pass can be cleaned with chemical method after the scaling is formed.
Other advantages are that the tubes can be cleaned mechanically after removal thechannel cover or bonnet, leakage the shellside is minimized since thereare no ?anged joints.A disadvantage this design is that since the bundle is ?xed to the shell & cannot beremoved, the outsides the tubes cannot be cleaned mechanically. Thus, its applicationis limited to clean services on the shellside. However, if a satisfactory chemical clean-ing program can be employed, ?xed-tubesheet construction may be selected for foulingservices on the shellside.In the event a large differential temperature between the tubes & the shell, thetubesheets will be unable to absorb the differential stress, thereby making it necessary toincorporate an expansion joint. This takes away the advantage low cost to a significant extent.