This standard applies to Positive Displacement Ammonia Compressors (Ammonia Compressors) and Compressor Units (Ammonia Compressor Units) for use in commercial and industrial refrigeration applications.
This standard applies to External-drive, Hermetic and Semi-Hermetic Refrigerant Compressors. In the case of External-drive Refrigerant Compressors, the driving mechanism shall be excluded from the sound and vibration measurements. However, for Semi-Hermetic Refrigerant Compressors where the driving mechanism is an integral part of the compressor assembly as defined in Section 3, it shall be included in the measurements.
This standard applies to positive displacement refrigerant Compressors operating in subcritical applications at a fixed displacement. This standard also applies to the presentation of performance data for Compressors for air-cooled, evaporative-cooled or water-cooled air-conditioning, heat pump and refrigeration applications.
La présente norme s'applique aux compresseurs frigorifiques volumétriques qui fonctionnent dans des applications subcritiques à une cylindrée constante. Elle s'applique aussi à la présentation des données de performance des compresseurs destinés aux climatiseurs de refroidissement par air, évaporation ou eau, aux thermopompes et aux systèmes de réfrigération.
This standard applies to Modulating Compressors operating in subcritical applications including Discrete Modulating Compressors and Continuous Modulating Compressors. This standard also applies to the presentation of performance data for Modulating Compressors for air-cooled, evaporative-cooled or water-cooled air-conditioning, heat pump and refrigeration applications.
This standard applies to electric motor driven, single and variable capacity, single and two stage Positive Displacement Refrigerant Compressors and Compressor Units operating with carbon dioxide in both subcritical and transcritical applications for refrigeration. This standard also applies to the presentation of performance data for Positive Displacement Compressor and Compressor Units operating with carbon dioxide.
The following projects are currently underway within the AHRI Compressors Product Section. The section invites input from all manufacturers, regardless of AHRI membership status. Contact Justin Prosser to participate in any of these projects.
"Uncertainty" is a key component of compressor performance ratings, and the section is creating universal definitions for uncertainty that will have global applications. Currently, the section is working with ASERCOM to develop a white paper that HVAC system manufacturers can use in communication with customers and regulators. The white paper will establish a comprehensive list of the sources of uncertainty and provide an overview on managing uncertainty.
Why you should be involved?
The AHRI Compressors section is working toward a unified industry position on uncertainty that will impact all manufacturers. The section is focusing on communicating the physical reality of performance rating uncertainty and the implications on compressor performance ratings. All manufacturers are invited to provide input on how they define and manage uncertainty.
The section has two main compressor standard goals. AHRI Standard 545P aims to rate and compare compressors not just at the full-load points, but also at part-load points, with the broader goal of eventually comparing compressors across entire operating maps. The section also is focused on a new centrifugal standard. Centrifugal compressors are becoming increasingly available in the market on a multi-national level and they require an industry standard to allow for accurate comparisons.
In addition, the section is working on updating AHRI Standards 510, 570, 571, and 530, as well as participating in ASHRAE Standards 23.1, 23.2, and 205, all of which relate to compressors.
AHRI rating standards are referenced all over the world by customers, suppliers, and regulators. The completed standards will impact how manufacturers rate products, whether or not they are members of AHRI. The section is particularly interested in working on the centrifugal standard with global manufacturers to facilitate international collaboration.
When rating systems using refrigerants with glide, compressor manufacturers look at dewpoints to analyze the performance of the system, while HVAC system manufacturers refer to the midpoints. The section will align the industry on this growing issue, instead of requiring manufacturers to translate data from dewpoints or midpoints.
All manufacturers will benefit from a harmonized approach to analyzing refrigerants with glide. The section wants to work with the industry to create a solution and needs input from all manufacturers. Work includes creating a guideline, establishing a better process to generate ratings, and educating the industry on the issue.
Contact Justin Prosser to participate in any of these projects.