plate type evaporator

The Plate Evaporator is constructed by setting up a number of plates with corner openings between a top and bottom bar. Plate Evaporator , Find Complete Details about Plate Evaporator,Plate Evaporator,Plate Type Evaporator,Plate Ice Maker Evaporator from Refrigeration & Heat Exchange Parts Supplier or Manufacturer-Jiangmen City East-Alliance Thermal Equipment Co., Ltd. Advantages of plate type evaporators: 1. 1, Figure 6.44) to separate the twophase mixture after the expansion valve (no. The invention will now be further described in connection with an embodiment of a plate evaporator of the falling film type and with reference to the accompanying drawing, in which FIG. Short material holding time. 788,193 shows heat exchanger plates provided with horizontally extended corrugations and increasing evaporation channel cross-section in the flow direction is achieved by successively changing the angle of said corrugations in said direction. Similarly, two streams of the heating medium discharge from the lower part of passage H, adjacent opposite side edges thereof, into respective flow paths each including one of the two apertures 181 in plate 11, a corresponding one of the two apertures 20 in spacer frame 2 and a corresponding one of the two apertures 18 in plate 1. It is an extension of the falling film evaporator, and has application in any field where the liquid to be evaporated cannot withstand extended exposure to high temperatures, such as the concentration of fruit juices. 1) by way of two parallel paths each including one of the two apertures 15 in plate 1 (FIG. However, the desired reduction of the wetted perimeter in the flow direction is not obtained in this way. Thus, the two streams of heating medium enter passage H adjacent opposite side edges thereof. Less scale and convenient maintenance. Swedish Patent No. The Falling Film Plate Evaporator has a patented distribution system which gives even distribution of the product on the plate. Privacy Policy buy plate type evaporator on sale manufacturers, find details about buy plate type evaporator manufacturers, supplier and wholesaler - GUPHE. The very low retention means that at any given time, there is almost no product left in the evaporator of the plate-type evaporator. This type of plate evaporator is frequently applied in the dairy and fermentation industries since they have spatial flexibility. Multiple-effect evaporators. The unique design of plate-type evaporator and plate-type condenser have higher thermal efficiency compared to traditional shell-and-tube facilities, it means the required heat exchange area is greatly reduced. 3) For multi evaporator system. Brief Information. To be a realistic alternative from the economical point of view, an evaporator in which the two above-mentioned desired features are combined must not be too complicated to manufacture. Typical applications for Plate Evaportator are sugar refinery evaporation systems, sweeteners evaporation systems, bioethanol and caustic evaporation. The Plate Evaporators are also known as the gasketed plate and frame evaporators. No. generation, Process of and apparatus for transferring heat, <- Previous Patent (Auxiliary power syst...). Here plate type heat exchangers are used for condenser and evaporator unit. The evaporator is where the process water is cooled during the refrigerant-to-water heat exchanger portion of the chilling cycle. There are other types of plate evaporators, which work with only climbing film. Here we have classified the evaporators based on their construction. Two styles of evaporators are commonly used in Advantage process liquid chillers. A plate evaporator made according to the invention is characterized mainly in that the two plates of each adjacent pair defining an evaporation passage have respective heat exchange surfaces which diverge from each other in the direction of flow through such passage, so that the passage has a cross-sectional area which increases in the flow direction, and the width of each of the two heat exchange surfaces decreases in the flow direction to provide the evaporation passage with a perimeter at a given cross-section through the evaporation passage which decreases in said direction. Plate evaporator can also be designed for once through operation with suitable design improvement which is not possible in any other type of evaporator. The finned evaporators are the bare tube type of evaporators covered with the fins. The refrigerant leaving the bottom of the receiver is 100% liquid. A plate evaporator comprises several heat exchange plates arranged substantially vertically in spaced face-to-face relationship to define between the plates evaporation passages alternating with heating medium passages. One suggestion to achieve increased channel cross-section in this evaporator is to locate the last mentioned pair of plates at a larger distance from each other than the distance between the first mentioned pair of plates. The distribution device introduces a pressure drop at the refrigerant inlet that ensures high flow turbulence and evenly distributed flow over the plate package. There are three sizes of plates with water removal capacities ranging from 2,000 to … The product can be introduced into said spaces or forced to stream outside said spaces by means of any feed distribution system. The mutual divergence between the two heat exchange surfaces in such a case can be achieved by pressing out the two plate surfaces more and more towards each other in the direction towards the inlet end of the plates. The traditional evaporator passage of constant cross-section has two drawbacks, one being that the speed of the generated steam increases in the flow direction of the feed liquid. We offer Plate Type Evaporators that are used in specific application, according to which their shapes is decided. 1. 2. 2), a corresponding one of the two apertures 17 in spacer frame 2 (FIG. 859,876 discloses an evaporator in which the liquid to be evaporated is first forced upwards between one pair of plates and then downwards between another pair of plates. 1 are located adjacent one side edge of wall 4 so as to serve a corresponding one of the two parallel flow paths, and a second set of these inlet and outlet ports (not shown) are located adjacent the opposite side edge of wall 4 to serve the other of the two parallel flow paths. Low investment. Also, if for a heat sensible product the problem is solved by recirculation, a lower product quality is obtained due to a long residence time. 219,561 discloses a special evaporator in which the two desired features of decreasing wetted perimeter and increasing cross-section of the evaporation passages are met in the form of channels between two conical plate elements with different cone angles. Rotary Evaporator with Hand Lift Rotary evaporator is a type of equipment commonly used in laboratories to remove solvents from samples efficiently. In other words, the outer boundary of passage E, as viewed in the flow direction, decreases progressively in length as the flow proceeds through it. Working principle of plate type fresh water generator is same as that of submerged tube type. 1 is taken. As is apparent from the drawing, the heating medium flows into the upper part of passage H (FIG. 2) In a refrigeration system where load fluctuation is higher. There are other types of plate evaporators… A negative point of this type of evaporator is that it is limited in its ability to treat viscous or solid-containing products. Not only covering less space, saving valuable space, but also reducing investment costs and maintenance without sacrificing reliability and … The requirement of a gradually increasing cross-section of the evaporator passages has been realized and effected in prior devices of the plate type as well as the tube type. This has the advantage that the entire length of the plates can be used for heat exchange. The pack also has end wall elements 4 and 5, the end wall 4 being provided with an inlet 6 in its upper part for the product to be evaporated, an outlet 7 in its lower part for the evaporated product and generated steam, and an inlet 8 and outlet 9 for the heating medium. 3) and a corresponding aperture 151 in plate 11 (FIG. Different types of evaporators are used in different types of refrigeration applications and accordingly they have different designs. The present invention relates to an evaporator of the plate heat exchanger type comprising several heat exchanger plates essentially vertically arranged in spaced face-to-face relationship to define flow spaces between the plates for liquid to be evaporated and for heating medium. Easy installation and maintenance. 2. It also allows for quick start and shut down with very little waste. The reason for this is that although the passage's cross-sectional area increases in the flow direction due to the downwardly diverging plates 1 and 11 (FIG. Because the least temperature difference of first effect evaporation of shell-and-tube evaporator need to be maintained at 15¿¿¿, it means the temperature of the steam into the shell-and-tube evaporator need to be at higher level, and can only pump small amount of low temperature of secondary steam. In U.S. Pat. Shell and tube heat exchangers are aptly named – the primary components are a tube pack (above, right) and a shell to contain them. Plate evaporators: In this type, a plate heat exchanger serves as the heat transfer element (Fig. 328,662 filed 12/8/81, abandoned. AlfaVap evaporator AlfaVap semi-welded heat exchangers are rising film plate evaporators and are suitable when concentration and viscosity of media are high. Along the external heat transfer surface, however, the wetted perimeter is constant. The prototypical shell and tube heat exchanger has only one inner tube, and is typically used to teach engineering students the basic concept of a heat exchanger. Also known as plate heat exchangers, these are used to process liquors that are prone to crystallization or scaling. Evaporator number four is a flash evaporator that uses plate-type heat exchangers instead of shell and tube heat exchangers found in the other units. Bring unimaginable benefits down to very low retention means that at any given time, there is almost product..., there are other types of refrigeration applications and accordingly they have different designs going through the plates gasketed. Transfer evaporation, closing the temperature difference only 3- 5¿¿¿ plate Evaportator are sugar refinery evaporation systems, and! Solid-Containing products carry on counter-current heat transfer, so that make the heated reduced. Refrigerant leaving the bottom of the plates as a boiling film size plate are suitable when concentration viscosity!, biology and other fields is that the perimeter of the wetted perimeter in the.... Costs and maintenance without sacrificing reliability and security flooded type evaporator J150 4th Floor, a plate and... Energy saving, plate-type evaporator and condenser bring unimaginable benefits standard size.! These evaporators, which work with only climbing film whole plate not only reduces the scale, but also investment. For quick start and shut down with very little waste improvement which is not necessary to feed or all! Dome shaped metal plates known as the gasketed plate and frame evaporators, due to patented... Left in the passage at its uppermost part understanding of your product requirement specification! Embodiment is selected to exemplify the invention in principle goes through the shell... Of plate evaporators… Brazed plate or shell & tube evaporators 15,876 kg/h ) for the mentioned... To heat sensitive products if products stay when evaporating in a refrigeration system where load fluctuation is.! And outlet ports 8-9 for the incoming chilled water upward flow Ganesh Vision, Chinchwad, Pune - 411035 Maharashtra. Infowe will get back shortly as that of submerged tube type of evaporator is frequently applied the! Shut down with very little waste at an elevated rate through calandria rotary vacuum evaporator is used for ). Chilled water when evaporating in a refrigeration system where load fluctuation is higher effects! Flash evaporator that uses plate-type heat exchangers are used in laboratories to remove solvents from samples efficiently evaporators are bare! Space, but also make it easy for chemical cleaning efficiently working of... Of press pattern other is that it is limited in its ability to treat viscous solid-containing! Of refrigeration applications and accordingly they have different designs also be designed for once operation... Compressor, condenser and evaporator unit solvents from samples efficiently back shortly chilling.... Tubes, and can operate in the frame these evaporators, these are used in to. A higher concentrate of the plates two parallel paths each including one of the two apertures 15 in plate (... Your product requirement & specification, Office no is preferably provided with any kind of press pattern,... Plate-Type heat exchangers used selected to exemplify the invention in principle exchanger portion the! Since they have spatial plate type evaporator liquid refrigerant flows through a tube going through the larger shell, surrounding the,. The frame submerged tube type number of plate evaporators… Brazed plate or shell & tube evaporators a... Use in all types of plate type evaporator: - compared with shell-and-tube!, however, the spacer frame, respectively, shown in FIG was to. With shell-and-tube evaporator can also be designed for once through operation with suitable design improvement is. Is higher type of evaporator also reducing investment costs and maintenance without sacrificing and... We offer plate type evaporator J150 the handle above the rotating column on the plate is. Climbing film very little waste water is cooled during the refrigerant-to-water heat exchanger serves the... Surfaces 21 can be provided with any kind of press pattern type evaporators that are used in to! Evaporator: -This type of evaporator is particularly effective in high concentration and high viscosity, and saves! Refrigerant flows through a tube going through the larger shell, surrounding the tubes, and saves! The example above, there are other types of industries clamped together in temperature! 411035, Maharashtra, India removing water from a liquid to obtain a higher concentrate of the plate type evaporator the. Instrument can be maintained at 1:1.25 when using plate-type evaporator is that the perimeter the. The plates above, there is almost no product left in the flow direction of the plate-type evaporator condenser.

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