A flash pasteurizer pasteurizes at a higher temperature killing the bacteria that is thermoduric and does so without degrading the product.
Pasteurizing kills bad bacteria and can prevent the spread of Johnes Disease to your herd.
You would base the size on how many gallons you are wanting to pasteurize and how fast you would like to be done pasteurizing. We suggest this process to be less than 2 hours.
This depends on what is readily available to you and what the cost of each would be
This depends on your incoming product temperature and your outgoing product temperature and your heat source but it could be as little as $.01/gallon!