LPA Pump Boosts Refrigeration Efficiency
The remarkable science of refrigeration chills our foods and cools our buildings even in a heat wave. Although a relatively simple system, it is not always a smooth one. One phenomenon - known as "flash gas" - creeps into most cooling systems, stealing power and crippling efficiency.
Now, a simple, low horsepower pump added to a refrigerant line can eliminate flash gas and cut energy use up to 40 percent. The product id the "Liquid Pressure Amplification" (LPA) pump and it can be applied wherever a refrigeration system is present - frozen food case, meat cooler, air conditioner or chiller.
Back to Refrigeration Basics
Each of these parts accomplishes what its name suggest. When refrigeration gas or refrigerant, enters the compressor, it is compressed into a smaller space. The gas becomes increasingly hot as the pressure builds.
The gas moves to the condenser where it is condensed into a liquid, and in the process gives off heat. This heat is captured or released into the air. Since heat moves towards cold, the refrigerant in the condenser must be hotter (at least 15 to 20 degrees) than its surroundings in order to convert the hot gas into a liquid.
The thermal expansion valve regulates the flow of refrigerant into the evaporator. As the refrigerant evaporates, the liquid is reconverted to gas. The gas returns to the compressor and the cycle is repeated over and over again.
How the LPA Pump Works
The LPA pump, developed and patented by Hy-Save, Inc. a West Linn, Oregon company, eliminates flash gas by slightly increasing pressure to the liquid refrigerant, which eliminates losses in the line. Only 1/5 horsepower, the pump is placed between the condenser and the thermal expansion valve.
Lower condenser temperatures result in reduced maintenance costs because windings, valves and cylinders operate cooler.
The LPA pump works well in refrigeration cases and coolers and standard commercial air conditioning systems in conjunction with reciprocating chillers, package units and various types of built-up units.
For further information, contact Energy Resource Center Mechanical Applications Specialist Bruce Dobbs, 691-3969. To contact Hy-Save, call 667-5091.
For more information about the Energy Resource Center call 503/692-48008 7895 SW Mohawk
Street Tualatin, Oregon 97602.