ISO 22484:2024

Overview

ISO 22484:2024 - "Displacement and dynamic compressors - Performance test code for electric driven low-pressure air compressor packages" - defines a standardized, wire-to-air performance test method for electrically driven low-pressure air compressor packages (commonly called blowers). It covers both positive displacement and dynamic (centrifugal) compression types using atmospheric air, and applies to packaged units with or without flow control (electrical or mechanical).

Key scope limits:

• Atmospheric inlet pressure: 0.5 to 1.1 bar
• Discharge vs inlet pressure differential: 0.1 to 2.5 bar
• Discharge vs inlet pressure ratio: 1.1 to 3.5

Exclusions include liquid-filled compression elements (e.g., liquid ring pumps or liquid-injected screw types) and most multi-stage compressors except repeating-stage centrifugal designs; single-shaft multistage centrifugal compressors are treated as a single stage for measurement purposes.

Key topics and requirements

ISO 22484:2024 establishes test procedures, measurement methods and result corrections to ensure repeatable, comparable performance data. Major technical topics include:

• Test scope and preconditions: packaged compressor definition, guarantee conditions, and required pre-test information.
• Instrumentation and accuracy: measurement of pressure, temperature, humidity, rotational frequency, flow rate, external coolant flow and electrical power; and calibration requirements.
• Test procedures: allowed deviations for speed, ambient conditions, flow selection, pressure selection, steady-state criteria, two-speed tests and test validity checks.
• Result corrections and calculations: corrections for flow, pressure and specific energy demand; corrected package power; isentropic efficiency calculations; and comparison with guaranteed values.
• Reporting: mandatory test-report content, summaries and example acceptance reports.
• Ancillary material: equipment checklist, test result templates, calculation examples and thermodynamic background.

Applications and who should use it

This standard is aimed at stakeholders involved in design, testing, procurement and commissioning of low-pressure air compressor packages, including:

• Compressor and blower manufacturers and OEMs
• Independent test laboratories and quality assurance teams
• System integrators and end-users in industries using blowers (ventilation, wastewater aeration, pneumatic conveying, process air)
• Procurement, commissioning and maintenance engineers who require verified, comparable performance guarantees

Using ISO 22484 helps ensure consistent, traceable performance verification, fair acceptance testing, and reliable specification of package guarantees.

Related standards

• ISO 1217 (compressor performance testing) - legacy reference for positive displacement compressors
• ISO 5389, ISO 18740 - existing compressor standards noted in the introduction for context

Keywords: ISO 22484:2024, low-pressure air compressor, blower, performance test, electric driven, positive displacement, dynamic compressor, test code, packaged compressor, VFD, isentropic efficiency.