heat exchanger Archives - UNITED HEAT EXCHANGER
O2 Reactor and Blow Tank
O2 Reactor and Blow Tank
O2 Reactor and Blow Tank
O2 Reactor and Blow Tank
High Pressure Shell and U Tube Heat Exchangers
Shell and U Tube Heat Exchanger High Pressure
High Pressure Shell and U Tube Heat Exchanger
Evaporative Condensers :
In systems involving heat transfer, evaporative condenser is a device or unit used to condense a substance from its gaseous to its liquid state, by cooling it. In so doing, the latent heat is given up by the substance and transferred to the surrounding environment. Condensers can be made according to numerous designs, and come in many sizes ranging from rather small (hand-held) to very large (industrial-scale units used in plant processes).
For example, a refrigerator uses a condenser to get rid of heat extracted from the interior of the unit to the outside air. Evaporative Condensers are used in air conditioning, industrial chemical processes such as distillation, steam power plants and other heat-exchange systems. Use of cooling water or surrounding air as the coolant is common in many condensers.
Specifications :
- The heat exchanger section wraps around the sides of the unit with the compressor inside.
Applications :
- Evaporative condensers can be used inside or outside of a building and under typical conditions, operate at a low condensing temperature.
Advantages :
- Typically these are used in large commercial air-conditioning units.
Evaporative Condensers
An evaporative cooler (also swamp cooler, desert cooler and wet air cooler) is a device that cools air through the evaporation of water. Evaporative cooling differs from typical air conditioning systems, which use vapor-compression or absorption refrigeration cycles. Evaporative cooling works by exploiting water’s large enthalpy of vaporization. The temperature of dry air can be dropped significantly through the phase transition of liquid water to water vapor (evaporation). This can cool air using much less energy than refrigeration. In extremely dry climates, evaporative cooling of air has the added benefit of conditioning the air with more moisture for the comfort of building occupants.
The cooling potential for evaporative cooling is dependent on the wet-bulb depression, the difference between dry-bulb temperature and wet-bulb temperature. In arid climates, evaporative cooling can reduce energy consumption and total equipment for conditioning as an alternative to compressor-based cooling. In climates not considered arid, indirect evaporative cooling can still take advantage of the evaporative cooling process without increasing humidity. Passive evaporative cooling strategies offer the same benefits of mechanical evaporative cooling systems without the complexity of equipment and ductwork.
Specifications :
- Residential and industrial evaporative coolers use direct evaporation, and can be described as an enclosed metal or plastic box with vented sides.
Applications :
- Before the advent of refrigeration, evaporative cooling was used for millennia.
- A vessel could also be placed in a bowl of water, covered with a wet cloth dipping into the water, to keep milk or butter as fresh as possible.
Advantages :
- Easy installation by bolted assembly
- Flexibility for any plant location and plot plan arrangement(installation over other units)
Evaporative Closed Circuit Coolers
Vertical Shell and Tube Heat Exchanger
Vertical Shell and Tube Heat Exchanger Manufacturer INDIA
A Vertical Shell and Tube Heat Exchanger in which the tubes extend through oversized holes in a liquid distribution plate. Liquid flows through the holes and down each tube exterior surface as a falling film. A spacer or clip, desirably of wire, is placed in each hole around each tube to center the tube so that the film has a uniform thickness. The clip is self-locking and remains fixed securely in position. Vertical Shell and Tube Heat Exchanger is a heat exchanger that is derived from its parent Shell and Tube Heat Exchanger and it is most commonly all Industries which involves higher-pressure and Higher Temperature applications.
A set of tubes is called the tube bundle and can be made up of several types of tubes: plain, longitudinally finned, etc. Shell and tube heat exchangers are typically used for high-pressure applications (with pressures greater than 30 bar and temperatures greater than 260 °C).[2] This is because the shell and tube heat exchangers are robust due to their shape.
Specifications :
- Vertical Shell and tube heat exchangers consist of a series of tubes. One set of these tubes contains the fluid that must be either heated or cooled.
- The second fluid runs over the tubes that are being heated or cooled so that it can either provide the heat or absorb the heat required.
Applications :
- Vertical Shell Tube Heat Exchanger is widely used in variety of application as a cooling solution.
- The most common amoung them is for cooling of Hydraulic Fluid and oil in engines, transmissions and hydraulic power packs.
- With the right coimbination of materials they can also be used to cool or heat other mediums, such as swimming pool water or charge air.
- Vertical Shell Tube Heat Exchanger also be used on fixed tube sheet heat exchangers
Advantages :
They are commonly used in
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- space heating
- refrigeration
- air conditioning
- power plants
- chemical plants
- petrochemical plants
- petroleum refineries
- natural gas processing
- sewage treatment
Vertical Shell and Tube Heat Exchanger Manufacturer INDIA
Vertical Shell and Tube Heat Exchanger
u tube bundle heat exchanger
Tube Bundle Heat Exchangers Manufacturer INDIA
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.
u tube bundle heat exchanger
In nuclear power plants called pressurized water reactors, large heat exchangers called steam generators are two-phase, shell-and-tube heat exchangers which typically have U-tubes. They are used to boil water recycled from a surface condenser into steam to drive a turbine to produce power. Most shell-and-tube heat exchangers are either 1, 2, or 4 pass designs on the tube side.
Specifications :
- The number of times the fluid in the tubes passes through the fluid in the shell.
- In a single pass heat exchanger, the fluid goes in one end of each tube and out the other.
- A tube bundle heat exchanger with baffles is disclosed wherein a tube bundle is housed within an inner casing which is acted upon from both the inside and the outside by a heating medium
Applications :
- The simple design of a shell and tube heat exchanger makes it an ideal cooling solution for a wide variety of applications. One of the most common applications is the cooling of Hydraulic Fluid and oil in engines, transmissions and hydraulic power packs.
- With the right choice of materials they can also be used to cool or heat other mediums, such as swimming pool water or charge air.
Advantages :
- Advantages of using a heat exchanger is that they are often easy to service.
- Particularly with models where a floating tube bundle where the tube plates are not welded to the outer shell is available. Fixed tube sheet heat exchangers.
Tube Bundle Heat Exchangers Manufacturer INDIA
Heat Exchanger Manufacturers INDIA
U Tube Bundle
Stainless Steel Heat Exchangers Manufacturer INDIA
Stainelss Steel Shell and Tube Heat Exchanger
Stainless steel also known as inox steel, is defined as a steel alloy with a minimum of 10.5%to 11% chromium content by mass. Stainless steel does not flake, rust or stain with water as regular steel does, but in spite of the name it is not fully stain-proof. It is also called corrosion-resistant steel or CRES when the alloy type and grade are not exhaustive, particularly in the aviation industry. There are different grades and surface finishes of stainless steel to go with the environment the alloy must endure. Stainless steel is used where both the properties of steel and fighting to corrosion are mandatory. Stainless steel differs from carbon steel by the amount of chromium present. Open to attack carbon steel rusts readily when exposed to air and moisture.
This iron oxide film (the rust) is active and accelerates corrosion by forming more iron oxide. Stainless steels contain sufficient chromium to form a passive film of chromium oxide, which prevents further surface corrosion and blocks corrosion from spreading into the metal’s internal structure
Properties:
High oxidation-resistance in air at ambient temperature is usually achieved with flourishes of a minimum of 13% (by weight) chromium, and up to 26% is used for harsh environments.[12] The chromium forms a passivation layer of chromium(III) oxide (Cr2O3) when exposed to oxygen. The layer is too thin to be visible, and the metal remains lustrous. The layer is impervious to water and air, protecting the metal underneath. Also, this layer quickly reforms when the surface is scratched. This phenomenon is called passivation and is seen in other metals, such as aluminium and titanium. Corrosion-resistance can be adversely affected if the component is used in a non-oxygenated environment, a typical example being underwater keel bolts buried in timber.
When stainless steel parts such as nuts and bolts are obligatory together, the oxide layer can be scraped off, causing the parts to weld together. When disassembled, the welded material may be ragged and potholed, an effect known as galling. This destructive galling can be best avoided by the use of dissimilar materials for the parts forced together, for example bronze and stainless steel, or even different types of stainless steels (martensitic against austenitic), when metal-to-metal wear is a concern. Nitronic alloys reduce the tendency to gall through selective alloying with manganese and nitrogen. Additionally, threaded joints may be lubricated to prevent galling.
Specifications :
- Stainless steel is used for jewelry and watches with 316L being the type commonly used for such applications.
- It can be re-finished by any jeweler and will not oxidize or turn black.
- Some automotive manufacturers use stainless steel as decorative highlights in their vehicles.
Applications :
- Stainless steel’s conflict to decay and staining, low maintenance and familiar lustre make it an ideal material for many applications.
- There are over 150 grades of stainless steel, of which fifteen are most commonly used.
- The alloy is milled into coils, sheets, plates, bars, wire, and tubing to be used in cookware, cutlery, hardware, surgical instruments, major appliances, industrial equipment for example, in sugar refineries and as an automotive and aerospace structural alloy and construction material in large buildings.
- Storage tanks and tankers used to transport orange juice and other food are often made of stainless steel, because of its corrosion resistance and antibacterial properties.
- This also influences its use in commercial kitchens and food processing plants, as it can be steam-cleaned and sterilized and does not need paint or other surface finishes.
Advantages :
- Some firearms incorporate stainless steel components as an alternative to blued or parkerized steel.
- Some handgun models, such as the Smith & Wesson Model 60 and the Colt M1911 pistol, can be made entirely from stainless steel.
- This gives a high-luster finish similar in appearance to nickel plating.
- Unlike plating, the finish is not subject to flaking, peeling, wear-off from rubbing (as when repeatedly removed from a holster), or rust when scratched.
Stainless Steel Heat Exchangers Manufacturer INDIA
Heat Manufacturers INDIA
Stainless Steel Heat Exchanger
ss high pressure heat exchangers
SS High Pressure Heat Exchangers Manufacturer INDIA
SS High Pressure Heat Exchanger is use of pipes or other containment vessels to heat or cool one fluid by transferring heat between it and another fluid. The walls of the pipe are usually made of metal. The exchanger consists of a coiled pipe containing one fluid that passes through a chamber containing another fluid. Another substance with a high thermal conductivity, to facilitate the interchange, The outer casing of the larger chamber is made of a plastic or coated with thermal insulation, to discourage heat from escaping from the exchanger.
Specifications
- SS High Pressure Heat Exchangers are pressed to form troughs at right angles to the direction of flow of the liquid which runs through the channels in the heat exchanger.
Applications :
- SS High Pressure Heat Exchangers are often spaced by rubber sealing and gaskets which are cemented into a section around the edge of the plates.
Advantages :
- SS High Pressure Heat Exchangers are compressed together in a rigid frame to form an arrangement of parallel flow channels with alternating hot and cold fluids.