Aug 11, 2017
The coolant in any HVAC system is ideally free from impurities. But dust or dirt are not the only natural enemies. Air bubbles are also a big problem for coolants in HVAC systems.
Despite seeming harmless and inert, air bubbles can drive up two factors of your system: inefficiency and maintenance costs. Solutions like hydraulic separators and deaerators treat these specific problems.
The Impact on Efficiency
Due to how air and liquid react to cooling, the bubbles will unavoidable move nearer to the condensers. This creates a barrier of air between the cooling element and the coolant, hampering heat transfer. In automated systems, pressure and temperature are increased to compensate for the decreased efficiency. This means additional power consumption, making cooling more expensive. In some cases, the presence of air has been so extensive that tenants have complained of extremely poor performance and discomfort in their office environment.
More Pressure Means Greater Strain
Due to the use of increased pressure and temperature, the HVAC system, particularly the compressor, does more work than necessary. This excess strain can lead to premature breaking down of replaceable parts such as gaskets and belts. But beyond that, air bubbles also shrink the service life of entire units.
How Does Air Get In?
A plausible solution to air bubbles might be blocking all potential entry points -- but this is not always possible.
Air bubbles usually leak into the system through compromised gaskets. Contamination also occurs during repair or at any point when the closed system is opened. In some cases, the air is in the coolant itself before it is loaded into the system. Inevitable reasons include the breakdown of the refrigerant or changes in atmospheric conditions that can cause the system to be highly vulnerable.
Why Use Optivent
Here at Masterflow Solutions, we offer Optivent-branded dirt and air separators that can solve air bubble issues in your system. This hardware solution is extremely durable, and it can stand extreme conditions while in operation. The Optivent has been designed and tested to operate in conditions up to 90-degrees Celsius, and to withstand maximum working pressures of up to 16 bar (test pressure of 21 bar).
As an investment, not only does it lessen the strain on heating or cooling components, but it also shrinks maintenance costs and other associated losses when a breakdown occurs. Furthermore it greatly aids the commissioning personnel in removing the air quicker and enabling them to get their desired readings.