The internet source for discussion and knowledge on pasteurization equipment, technology, and equipment selection for flash pasteurization, tunnel pasteurization, and used pasteurizers.

The Basics of Applications - Tunnel Pasteurization Vs. Flash Pasteurization

Saturday, April 25, 2009

Many operations today find themselves deliberating over tunnel vs. flash pasteurization, as well as other technologies and their implications (such as the effects of filtration, hot filling, etc) in the equation.

As a precursor to articles forthcoming some basic statements should be made:
  1. Both are effective technologies in most applications.
  2. Tunnel pasteurization pasteurizes both the product and the package. Flash pasteurizes only the product.
  3. The technology which is the right decision for your operation is more complicated than "one machine vs. another". To find the right decisions a number of factors must be weighed, including your confidence in operational disciplines of your organization.
  4. For most products, if they are "shelf stable" whatever happens to them in the journey from your plant to the consumer will affect them more from a flavor perspective than either technology.

Consider these basic points as we look forward to further analysis in Tunnel Vs. Flash next week.

Part I - Capital Cost - Comparison of Tunnel Pastuerization Vs. Flash Pasteurization

Sunday, April 19, 2009

Every discussion with a supplier of flash pasteurization equipment would lead you to believe that there really is no other option. The message resounds by voice and on the internet: Flash pasteurization is the newest and greatest technology available. It uses less energy, consumes less floorspace, and costs less to install.

It would leaves one asking why anyone would use a tunnel pasteurizer and you feel lucky that you are "in the know". This article is intended to be an "introduction" and what will likely be a series of articles. After having had the opportunity to look deeply into both technologies, each has its place.

Let's make an assumption that your product is one that has an option of doing tunnel and flash and you are asked to make a decision on what is best for the operation. Your decision would likely be made between tunnel and flash pasteurization based on the following elements:

  1. Capital Cost (including installation)
  2. Operating Cost (including utilities and product waste)
  3. Floorspace
  4. Accomplish a "Generic" Quality Specification

There would be other measures involved, however these would surely be part of the analysis. The outcome of the analysis will not be so straightforward as the cost of one piece of equipment versus another.

Item 1. Comparison of Capital Costs

key consideration in this evaluations will include the requirement if a warmer would be necessary after the filling to bring the finished product up to temperature for packaging or labeling. Later we will look at some specific applications and associated pricing.

Tunnel Pasteurization System Cost Elements

  1. The Tunnel Pasteurizer
  2. Rework to Infeed and Discharge Conveyors
  3. Installation
  4. Cooling Tower Loop (optional) (dependendent on product, line efficiency, cooling & warming on the packaging line)
Flash Pasteurization System Cost Elements
  1. Flash Pasteurizer
  2. Buffer Tank (application specific)
  3. CIP Skid (application Specific)
  4. Tunnel Warmer
  5. Cooling Tower Loop (optional)
  6. Sterile Filling Equipment
  7. QC Laboratory Equipment
See the rest of this article here.

Welcome to the Pasteurization Blog

Saturday, April 4, 2009

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Welcome to the information sharing site for pasteurization, pasteurizers, and full discussion on all elements of shelf life stabilty. This site has been inspired as there seems to be a fragmented base of users across sectors of packaging and products (beer, milk, juice, wine, beverage, and food) and technlogies (tunnel pasteurization, cooling, warming, hot fill, filtration,retort, flash pasteurization) and new technologies (electron beam, x-ray, gamma-ray). We beleive we have assembled a large spectrum of authors and contributors for the site in the next year who are well versed in all these topics.

This site is intended to fill the nitch of talking with the competition in the interest for group learning and furthering technlogy.

If you would like to contribute content to the site, or would like to advertise, please send e-mail to

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