11. Plate heat exchangers

Heat Exchangers

Heat transfer principles

Two substances must have a different temperature in order to transfer heat. Heat always flows from the warmer substance to the colder. The greater difference, the faster it equalizes.

All heat transfer in Dairies take place in the form of direct or indirect heating e.g. a Pasteuriser unit can have a small soldered PHE where steam goes direct in the water, the water gets hot and used indirectly in The pasteurizer unit to heat the milk to desired pasteurising temperature.

The same thing happens in milk cooler e.g. in the milk reception, the only difference is in the media — Ice water, not steam.

Tubular Heat Exchanger

Tubular Heat Exchangers

Will often be used in UHT production, or on liquid with high viscosity and lower heat transfer.

The efficiency is lower in a THE, but can operate with longer intervals between cleaning.

The illustration to the left shows the end of a multi-tube heat exchanger

Scraped Surface Heat Exchanger

Scraped Surface Heat Exchanger

Is designed for heating and cooling of viscous, sticky and lumpy products as well as for crystallisation of products.

The operating pressures on the product side can be very high — Up to 40 bar.

Please feel free to use the contact form below to request more information about how Plate Heat Exchangers can play a role in your project

Guidline 11.00 Heat Exchangers -- Mejeriet can recomend countless type of Heat Exchangers, find them below and ask for informations

11.01 Plate Heat Exchanger -- Set-up for low viscosity product with no solid particles..
11.02 Plate Heat Exchanger -- Set-up for Heavy viscosity like Cream and Fruit pulp -- No lumps
11.03 Multi Tubular Heat Exchanger -- Suitable for very high temperature and high pressure, e.g. UHT plants
11.04 Mono Tube Heat Exchanger -- Suitable for high temperature and high pressure -- Lumps up to pipe diameter can pass
11.05 Scraped Surface Heat Exchanger -- Suitable for sticky anf lumpy liquids, e.g many of the desserts your Dairy can make
11.06 Scrouded spiral holding pipe. -- Suitable if any of your heated products need prolonged holding time at a certain temperature

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Your answers & questions to 11.00 Heat Eexchangers: --- If you have additional whishes or ideas, please let them florish here.

Don't let the list above scare you, Mejeriet can help you make any product you want

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