Heat Conducting News

Heat Conducting News    TECHNICAL INFORMATION

BLYGOLD POLUAL:
EXTRA ENERGY SAVING!!

If corrosion occurs and pollution will adhere – without any corrective or preventive measurements – the performance can decrease dramatically. And if we speak about the performance of a coil, which is related to airside pressure drop and thermal resistance, everybody knows that a treatment and professional cleaning is not only the key to a longer life time of the coil, but what is more important; saving money on the energy bill.

This was found again in an independent test at the French company Rexan Beauty, located near Lyon. This cosmetics manufacturer has had a chiller (RTAB 212) for over three years. It is used for the manufacturer’s production process, which runs 16 hours a day, 365 days a year.
The annual maintenance of the coils – which were made from aluminum without protective coating – during this period was periodical rinsing. However, after they found that the coils – partly as a result of this – were extremely dirty, Rexan Beauty decided to have the coils professionally cleaned and treated with Blygold PoluAl.

Subsequent measurements showed that the coil performance increased:

• Lower pressure drop
• Bigger air capacity
• Better heat transfer

MEASUREMENTS

*Note; in the past they changed a fan into a wrong position!

Impressive figures, which conclude tremendous energy savings, and are easy to quantify:

Starting point
      Increase of condensing T by 1 , KW input increases by 1,75%
      Increase of condensing T by 1 , cooling capacity decreases by 1,1%

Energy input

Cooling capacity

Energy consumption

• 36,2 KW per hour = 579,2 KW per hours (one day)
• Annual extra energy consumption 211408 KW
• Average price per KW US$ 0.125

TOTAL ANNUAL EXTRA ENERGY CONSUMPTION: US$ 26,430 per year

If treated with PoluAl coating and cleaned thoroughly twice. During the 5-year warranty period, the condenser would deliver its nominal performance. Provided the fouling conditions and cleaning by the customer. Compared to the cost of this treatment and the costs of increased energy consumption, this means that the pay back period would be app. 2,5 month.

Blygold warrants the anti-corrosion treatment for at least five years, incl. a two time thorough cleaning by certified engineers.

Note
The pay back period will differ in each scenario. The differences between a five year Blygold treatment and the increase of energy costs are tremendous. However, it is fair to conclude that a non feasibility-case rarely occurs.

Technical information of the unit at Rexan Beauty