Energy Efficiency

The APR Control provides alternative design strategies that have been proven to reduce total power consumption of a new or existing system installation/design. By modulating the DX compressor for load-matching performance, the APR Control helps save energy via direct compressor power savings and allowing for total system optimization in many applications.

APR Control Direct Compressor Energy Savings

APR Control Compressor Power Consumption Testing Parameters An HVAC equipment manufacturer conducted a test in their state-of-the-art testing facility to assess the direct energy-saving benefits of utilizing the APR Control at part load conditions. Original equipment performance parameters: 10-ton rated at AHRI 210/240 Two 5-ton stages… Read More

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Optimize Energy Efficiency with APR Control

The concept of Optimization has become prevalent in the HVAC industry. It is an agreed upon term that refers to controlling the HVAC systems to provide the necessary amount of cooling to maintain building comfort demands at energy efficient levels to utilize the least amount of power consumption. Read More

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Energy Efficiency APR Control Case Studies

Rawal Devices contracted with Underwriters Laboratories’ HVAC Testing Facility to conduct a third-party evaluation of the APR Control performance against a standard DX cooling system and a system with a simple hot gas bypass during similar part-load demands. Read More

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The Rawal APR Control is a variable capacity enhancement to DX HVAC systems.