Shell and Tube Heat Exchangers are being manufactured in 3 classes like, TEMA mechanical standard class R, Class C and class B exchangers. Class R for severe requirement in petroleum, class C for moderate and general process requirement, Class B for chemical Process Services. Shell & tube heat exchangers are being designed and manufactured in a wide range of design pressure and temperature and can be defined as:
Air-cooled heat exchangers offer many unique features, such as: variable-pitch fan hubs, 2-speed motors, galvanized or stainless construction, freeze protection, louvers, maintenance walkways, and other special features required for your application. Our air coolers may also be equipped with stainless steel headers or any of several high-alloy material options. Plug Box headers, Removable Cover Plate headers and manifold type headers are available. H.E.A.T. offers verities of fin types using similar and dissimilar tube and fin materials. To enhance the heat transfer with viscous fluids H.E.A.T. also offers customized turbulators.
Finned Tube Heat Exchangers is a type of heat exchanger design that uses plates and finned chambers to transfer heat between fluids. It is often categorized as a compact heat exchanger to emphasise its relatively high heat transfer surface area to volume ratio. The plate-fin heat exchanger is widely used in many industries, including the aerospace industry for its compact size and lightweight properties, as well as in cryogenics where its ability to facilitate heat transfer with small temperature differences is utilized. A high degree of flexibility is present in plate-fin heat exchanger design as they can operate with any combination of gas, liquid, and two-phase fluids. Heat transfer between multiple process streams is also accommodated,
Marine heat exchangers are the most common way to cool a boat’s engine, using the lake, river or ocean water in which the boat floats. Since this water may be corrosive the engine may be cooled by a sealed mixture of distilled water and antifreeze. Heat from the water-antifreeze mixture is then transferred to the ocean (or lake or river) water which flows into a heat exchanger. The water-antifreeze mixture runs through the heat exchanger dumping heat, but remaining separate from corrosive salts and chemicals found in the water the boat is floating in. If the ocean water eventually corrodes and ruins the heat exchanger it can be replaced at a fraction of the cost of replacing the engine.
Plate type heat exchanger is composed of multiple, thin, slightly-separated plates that have very large surface areas and fluid flow passages for heat transfer. This stacked-plate arrangement can be more effective, in a given space, than the shell and tube heat exchanger. Advances in gasket and brazing technology have made the plate-type heat exchanger increasingly practical. In HVAC applications, large heat exchangers of this type are called plate-and-frame; when used in open loops, these heat exchangers are normally of the gasket type to allow periodic disassembly, cleaning, and inspection. There are many types of permanently-bonded plate heat exchangers, such as dip-brazed and vacuum-brazed plate varieties, and they are often specified for closed-loop applications such as refrigeration. Plate heat exchangers also differ in the types of plates that are used, and in the configurations of those plates.
A heat-exchanger system consisting of a bundle of U tubes (hairpin tubes) surrounded by a shell (outer vessel); one fluid flows through the tubes, and the other fluid flows through the shell, around the tubes. Multitherm can duplicate any existing bundle to include dimensions, materials and performance. We can build “U” tube bundles, straight tube “floating” tube bundles, or we can retube fixed tubesheet heat exchangers when the bundles is not removable. Multitherm is not locked into any one material. Most bundles tend to be build with copper tubes and steel tubesheets.
We are one of the leading supplier and exporter of heat exchanger seamless tubes manufactured by high quality raw material procured from reliable supplier and under supervision of specialists. Heat Exchanger U tubes12 mtr. 'U' tubes exported and supplied by us is highly appriaciated by our client for satisfaction of there requirement. Bends can be heat treated in accordance with clients' requirements followed by hydrostatic testing and dye penetrant testing if required.