Liquid distribution : 1. Types of Evaporators or Classification of the Evaporators. Hydrodynamic. Heat Transfer. 3) Film evaporator Types: i) Wiped Film evaporator ii)Long Tube Evaporator a) Climbing film evaporator b) Falling film evaporator Types of Evaporators 4. The liquid entering the circulation evaporator will boil in the separator, not on a heating surface, hence minimising fouling, whereas with plate evaporators, boiling will occur on a heating . Evaporator in a cooling system in which the liquid evaporates and this order is Refrigerant device that extracts heat from its environment. To satisfy the wide spectrum of process requirements, GEA designs solutions with all Plate evaporators may be constructed of flat plates or corrugated plates, the latter providing an extended heat transfer surface and improved structural rigidity. It was observed that the total steam consumption of Robert type evaporator was 36.34% whereas for Radial type evaporator was 33.77%. The flooded type evaporators are available in larger capacities ranging from 10 TR to thousands of TR. The evaporators may be classified into a forced convection type or natural convection type, depending on whether the substance to be cooled lows naturally by difference in density through the heat transfer surfaces of the evaporator or forced by pump or fan. It is also used to increase the concentration of liquids. Flooded evaporator 2. Horizontal-tube natural circulation evaporator 6. Submit Close. If you have any questions or good suggestions on our products and site, or if you want to know more information about our products, please write them and send to us, we will contact you within one business day. Natural/forced circulation evaporator. An evaporator, distiller or distilling apparatus is a piece of ship's equipment used to produce fresh drinking water from sea water by distillation. The third group is a unique classification and the direct-fired, submerged combustion evaporator is the best example of this type. Types of Evaporator. Early evaporators on sailing vessels. Types Of Evaporators. The types of equipment depend primarily on the configuration of the heat-transfer surface and on the means employed to provide agitation or circulation of the liquid. Bare tube coil evaporator 2. Short-tube Vertical Evaporator. These evaporators are widely used in dairy plants for chilling milk, in breweries for chilling beer. PDF | On Jul 23, 2019, Muhammad Wakil Shahzad and others published Design of Industrial Falling Film Evaporators | Find, read and cite all the research you need on ResearchGate The types of evaporators in this category include: Climbing Film Evaporator. 5.2.3 Calculations for multiple- effect evaporators. In some kinds of evaporator, the refrigerant flows in the tubes and substance to be cooled surrounding it. Heating and boiling of liquid cause it to rise and flow upwards and un-evaporated liquid flows down through the central large diameter tube. Reason. Though more difficult to use than other types of evaporators, these are nevertheless popular among energy companies because they can reduce operating costs while meeting government-mandated standards. source: raj-evaporators.com. Some are constructed of two flat sheets of metal so embossed and welded together to provide path for refrigerant flow between two sheets. Types of Evaporator. Shell and tube evaporator 5. Description. Short tube vertical evaporators are the oldest type of evaporators in use today. types of evaporators . Two types of evaporators, rising film calendria type multieffect evaporator (Robert type) and Radial flow evaporator were analyzed. Flooded type of the evaporators. Removal of solvents is a common need in any organic chemistry lab and often times the major “bottleneck” in a synthetic workup, thereby slowing down production. These types of evaporators are used for effluent treatment, solvent recovery and other applications. For a multiple – effect evaporator system calculations, the values required to be obtained are (i) The area of the heating surface in each effect, (ii) The kg of steam per hour to be supplied, and (iii) the amount of vapour leaving each effect, particularly in the last one. Tube in tube evaporator According to the manner in which liquid refrigerant is fed 1. Natural circulation evaporators are based on the natural circulation of the product caused by the density differences that arise from heating. Plate Sheet Type Evaporator : These are of several types. In other words, the evaporator is a refrigerant. There are four fundamental types of industrial evaporators and crystallizers used for wastewater treatment, brine management, or improving water reuse. Forced-circulation-type evaporator 3. Steam economy gives an indication of the process efficiency. Finned tube evaporator 3. Different types of evaporators can face different water treatment problem with different performances. Evaporators. Agitated Thin Film Evaporators. TYPES OF EVAPORATORS According to type of construction 1. Plate evaporator 4. These are generally much smaller and simpler than the tubular evaporation systems, and are often batch or multipurpose evaporators. 3.2.1 Long tube vertical (rising and falling film type) evaporator. Types of Solvent Evaporators – An Overview. General Types of Evaporators: 1. As you can see, there are many different types of evaporators. In general Falling Film Evaporators are build vertically. It can be operated in stages reusing vapours by Thermo-Vapour Recompression (TVR) and Mechanical Vapour Recompression (MVR), for steam economy. Falling Film-type evaporator 2. Working Principles. . According to the mode of heat transfer 1. 23.4.1 Flooded Type Shell-and-Tube Evaporator Figure 23.2 shows a flooded type of shell and tube type liquid chiller where the liquid (usually brine or water) to be chilled flows through the tubes in double pass just like that in shell and tube condenser. Typically, liquor is fed to the tops of tubes arranged as a bundle and flows down the walls as a film under gravity. This type is widely used in household refrigerators and home freezers because of easy to clean, economical to manufacture. Lower your risks and improve costs by understanding the trade-offs between the different evaporator types. Types of Evaporator - Ansaroo. Your name. Thus natural circulation is promoted in this type of evaporator. Residence time. 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