How Does IceCOLD® Work?
IceCOLD® removes oil-fouling, thus improving coil heat transfer, and delivering colder air faster. It also delivers 54% higher lubricity to compressor oil.
* Intertek Laboratory Test Results
What Is Oil Fouling?
Oil Fouling of the heat transfer surfaces of air conditioning and refrigeration systems, will cause a loss of efficiency that will continue to accumulate.
ASHRAE confirms that over time, performance is degraded by 30% due to the build-up of lubricants on internal surfaces. Higher percentages up to 40% have been observed in systems 20 years old, or older.
In all air conditioning and refrigeration systems 1/2% to 8% of the compressor’s lubricating oil circulates with the refrigerant. This oil attaches to the inner walls of the refrigeration tubing and acts as an effective insulator to heat exchange. It is these oil deposits that ultimately block heat transfer, and reduce your system efficiency.
Equipment suppliers may state that in a particular system, migrating oil concentration has been reduced to only one percent. The one percent being referred to is one percent of the total oil volume. If a compressor holds four quarts, or 128 ounces of oil, then at one percent, 1.28 ounces is flowing through the system at any given time. Since a capillary tube, oil pressure switch, or expansion valve can be fouled with a few milligrams of oil, when one percent of any oil charge is flowing constantly through the system, the system will become oil-fouled.
* 1998 ASHRAE Handbook, Refrigeration, Chap. 6.7
Restores Cooling Efficiency and Protects Equipment
- Improves efficiency of heat exchange by removing Oil Fouling and preventing it from reforming
- Increased Delta T produces colder supply air to the space being cooled
- Causes refrigerant to extract more heat faster and more efficiently
- System reaches set-point more quickly, decreasing equipment run time
Advanced Lubricity Compound
- Mixes with existing compressor oils and improves lubricity by 54% (Intertek test results)
Managing The Problem
Some of the techniques used by manufacturers to control migrating oil include the use of mechanical devices such as separators, skimmers, drums, heat sources, suction risers, traps and pumps. However, according to ASHRAE’s Handbook*, these high-tech designs are not efficient enough to remove all of the unwanted oil. Although the mechanical solutions may reduce the problems of restricted or plugged capillary tubes or sticky expansion valves, they do not resolve the boundary layer oil fouling over time.
*1998 ASHRAE Handbook, Refrigeration, Chap. 2.9
The heat transfer efficiency loss due to oil-fouling is restored to near new equipment levels by using IceCOLD® synthetic catalyst to break the Vander Waals (surface tension) forces between the oil globules and the walls of the refrigeration tubing. The absence of oil-fouling restores the loss of 20% to 30% heat transfer efficiency. An added benefit is that the capillary tubes, expansion valves and heat pump’s 4-way valves are also cleaned, and will not oil-foul again.
The result is that IceCOLD® delivers an average financial payback period of under twelve cooling months, and a Return on Investment can be as high as 500%.