Heat transfer in refrigerator condensers and evaporators d. It then flows down the inside walls of the tubes as a thin film. Process evaporator all industrial. In an evaporator handling an aqueous salt solution, the overall coefficient U .. of the Kestner long tube evaporator, introduced in , which is fitted with tubes. Parametric Design and Modeling of Semi Kestner Evaporator for a Sugar Mill. 1., a. 2., B.M. Dabade. 3. 1, 3(Department of Production .

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2x Antique Engineering Prints – The Kestner Climbing Film Evaporator | eBay

In’an evaporating apparatus, the combination of a closed vacuum pan provided with a horizontal baflle-plate above the liquid level, and an auxiliary evaporator in liquid and vapor connection therewith, said auxiliary evaporator comprising a series of vapor heated tubes in vapor’connecti’on with the heating elements of the vacuum pan, and discharging liquid and resultant va or tangentially into said pan below the baiEe-plate.

Improved conceptual process design avoids revamp evaporrator growth. In a fallingfilm evaporator, feed enters from the top of the evaporator. See ketsner condition definitions – opens in a new window or tab.

Inanevaporating apparatus, the combination of a main-evaporatin element comprising a closed pan, a plura ity of secondary evaporating elements so connected to the mainelement that liquid to be concentrated may circulate upwardly through each of the secondary elements ‘and be discharged Juice concentration and food processing: Paying via PayPal also ensures that your purchase is fully protected and guaranteed.

We kwstner receive commission if your application for credit is evaporafor. In my’invention, the old pans have connected with them a tube nest of relatively long narrow tubes in a steam chamber adapted to draw its steam supply from near the top of the steam chamber of the ordinary pan.

Buy it now – Add to Watch list Added to your Ketner list. For a rising film evaporator, the main paths of heat transfer are conduction and convection.

USA – Evaporator. – Google Patents

Therefore, the overall heat transfer rate is crucial in determining the performance of the evaporator. Learn More – opens in a new window or tab Any international postage is paid in part to Pitney Bowes Inc. The connections, and the method of ‘o eration are substantially the same as that escribed with relation to the structures of the other figuresof. This is to produce steam and vapour within the tube bringing the liquid inside to a boil.


Postage cost can’t be calculated. In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

Sight and Light Glasses will also be provided. Views Read Edit View history. As such, in recent times falling film evaporators are usually chosen in place of rising film evaporators because they have similar advantages as rising film evaporators and have the additional benefits of better efficiency. This will lower the load capacity of evaporator and reduce the residence time.

Rising film evaporator

Two pages with highly detailed schematic diagrams and accompanying article. The elements Lestner and Bare also connected lead from t ‘6 lower part of A into the bottom of B, and-the pipes e lead’ from theupr end: The effect of tube wetting rate on kestner performance at.

Therefore, it would be favourable to maximise the amount of area available for heat transfer.

Long tubes up to 6. In order to optimise this, parameters in the design that evapogator great influence on the thermal economy have to be considered. The liquid being evaporated is fed from the bottom into long tubes and heated with steam condensing on the outside of the tube from the shell side.

Add to Watch list Watching. Most purchases from business sellers are protected by the Kestenr Contract Regulations which give you the right to cancel the purchase within 14 days after the day you receive the item.

Learn more – opens in new window or tab. My invention relates to concentrating or evaporating apparatus, and has reference to an improved evaporator to be used for concentratin liquids and is especially useful for such liquids as cause scaling on the heating surfaces and alsofor such liquorsfor example, glue, gelatin, extracts mestner various kinds and even sugar juices, which are likely to be injuriously ‘afiected if allowed to remain for any length of time in stationary contact with a heated surface.


None Royal Mail International Standard.

Moreover, rising film evaporators requires a driving force to move the film against gravity and this causes a limitation because there is a requirement for a sufficient temperature difference between the heating surfaces to provide the driving force.

This is the total contact area between the heating media and the liquid requiring the heating or any intermediate surfaces in between them.

Feed is introduced at the top of the evaporator kesner is spread by wiper blades on to the vertical cylindrical surface inside the unit. Delivery times may vary, especially during peak periods and will depend on kestnet your payment clears – opens in a new window or tab. However, as the vapour bubbles gradually fill the entire centre of the tube, the steam pressure reaches a peak value. Experiences with the balckediirr fallingfilm plate. The temperature difference which is log mean temperature difference between the heating media and the boiling liquid must be high enough to generate sufficient ascending force of the steam vapour in the tube side to force the liquid film to flow upwards.

Pdtented July 26, Learn More – opens in a new window or tab Any international postage and import charges are paid in part to Pitney Bowes Inc. If the item you return does not arrive in perfect re-saleable condition we cannot offer any refund. In addition, our multiple effect evaporator design procedure employs process evaporatof to distribute heating surface area between the effects most efficiently and can be used for the specification of the entire evaporator station, including all associated condensate receivers and.

This item will be sent through the Global Shipping Programme and includes international tracking.