The plate
cooler is considered to be a vital part of any cooling system and often it
is something that one cannot do without. It is very commonly used in milk
cooling systems and is often used to protect milk from the infection of
bacteria and strive to get healthy drinking milk to the average population. All
milk providing brands make sure their products are boiled to purify them and
one of the most common things they use are plate coolers in the cooling system.
However, many people often complain that their plate coolers are not performing
as well as they should and they do not know how to check the effectiveness.
Read on to find out how to check the efficiency of plate coolers.
Flow Rates
The rate at which the cooling fluid and
milk both flow is supposed to be very important in the process. One duly needs
to note the rate at which the milk is going to flow from the pump into the
cooling system. It is highly recommended that the rate is even and remains
consistent throughout the cooling process. This is because it will make plate
coolers easier to size and easier to design. It will also result in a better
use of the cooling water making sure that it is not wasted at any cost. It is
better that a pump which transfers is used rather than one that pumps fluid
into the cooling system. The older
industrial models work better with the ratio of 3:1 (water: milk) while the
newer models can work with a 2:1 ratio and also a 1.5:1 ratio. Thus, it is
important to ensure that the ratios of the two fluids are constant with each
other.
Other
Factors
There are a number of other factors that
can affect the performance of a typical plate cooler. To begin with, the compressions of the plate will have to be
looser. If plates are way too tight, the fluid will not be able to pass through
the cooling system. People need to allow at least three millimeters between
each plate and each gasket but make sure that the distance does not fall
between 2.3 millimeters. Moreover, the available surface area is important as
well. The maximum rate at which water flows from the pump into the cooling
system will determine the amount of plates and the size of each plate in the
system. The cleanliness of the plates matter too as the cleaner they are, the
quicker the fluid will pass through as well. If the flow is blocked by
contaminants, it will hamper the flow of the fluids as well. The temperature of
the source of water being used in the cooling system is important as well. One
can account for a few fluctuations in temperature over time but it is best to
make sure that the coolest source of water on-sight is used. The temperature of
the milk needs to be 35 degrees Celsius to about eighteen degrees Celsius after
the cooling process.
Tests to
Run
There are also a number of tests to run in
order to test the effectiveness of the cooling system. First of all, the inlet
and outlet pipes, as they leave the cooling system, will be checked to so that
any leakages can be seen beforehand. Find a place to wrap the thermometer
(paper) which can be wrapped around the water inlet pipe as well as the milk
outlet pipe so that one can determine the performance of the plate cooler. Keep on checking the temperature at regular
intervals so that any glitches are captured beforehand and also to make sure
that the temperature remains consistent throughout the process.
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