ISO 4376-2024 PDF

Full title and description

ISO 4376:2024 — Cycle energy requirement — Test method. This international standard specifies a standardized laboratory test method to determine the cycle energy requirement of electrically driven positive-displacement and dynamic compressors, and defines required measurements, calculations and reporting for consistent comparison of compressor cycle energy performance.

Abstract

This document applies to electrically driven positive displacement and dynamic compressors and defines the test method to evaluate the cycle energy requirement. It covers test setup, instrumentation and measurement procedures, calculation of cycle energy requirement and recommended reporting elements to ensure repeatable, comparable results.

General information

• Status: Published.
• Publication date: November 2024 (Edition 1, 2024).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 23.140 — Compressors and pneumatic machines.
• Edition / version: Edition 1 (2024).
• Number of pages: 23 pages (ISO metadata).

Scope

ISO 4376:2024 specifies a controlled test method to determine the cycle energy requirement of electrically driven compressors, including positive-displacement and dynamic types. The scope covers test arrangements, boundary conditions, required instrumentation, data acquisition, calculation methods for cycle energy requirement and minimum reporting requirements so that results are reproducible and comparable across laboratories and manufacturers. It is intended for performance evaluation and energy benchmarking of compressor designs and installations.

Key topics and requirements

• Definitions and terminology for cycle energy and related parameters.
• Required test rig arrangement and environmental/test boundary conditions.
• Instrumentation, measurement accuracy and calibration requirements for pressure, temperature, flow and electrical power.
• Step-by-step measurement procedure for establishing a compressor cycle and capturing required data.
• Calculation procedure to derive cycle energy requirement from measured variables, including data processing and uncertainty considerations.
• Reporting format and mandatory information for test reports to ensure comparability (test conditions, instrumentation, uncertainties, results).
• Applicability notes describing limits (electrically driven machines; positive-displacement and dynamic compressor families) and exclusions.

Typical use and users

Primary users are compressor manufacturers, independent test laboratories, OEMs specifying compressor performance, energy auditors, research institutions, regulatory bodies and large end users who benchmark compressor energy performance. The standard is used for product development, energy-efficiency comparisons, conformity testing and technical procurement specifications.

Related standards

ISO 4376 sits among other standards for compressors and pneumatic machines maintained by ISO/TC 118 (for example, other compressor performance and safety standards). Relevant related standards include various ISO compressor performance codes and classification documents within ICS 23.140. Users should consult the ISO/TC 118 work programme for companion standards on safety, performance testing and terminology.

Keywords

cycle energy requirement, compressor test method, compressor energy, positive-displacement compressor, dynamic compressor, measurement procedure, ISO 4376:2024, energy benchmarking, test rig, instrumentation

FAQ

Q: What is this standard?

A: ISO 4376:2024 is an international standard that specifies a test method to determine the cycle energy requirement of electrically driven positive-displacement and dynamic compressors.

Q: What does it cover?

A: It covers test arrangements, instrumentation and calibration, measurement procedures, calculation of cycle energy requirement, uncertainty considerations and minimum reporting requirements so results are repeatable and comparable.

Q: Who typically uses it?

A: Compressor manufacturers, independent testing laboratories, OEMs, energy auditors, researchers, regulators and large industrial users for product development, benchmarking, procurement and certification purposes.

Q: Is it current or superseded?

A: ISO 4376:2024 is the current published edition (Edition 1, published November 2024). There is no indication of it being superseded as of the publication metadata.

Q: Is it part of a series?

A: It is part of the body of standards under ISO/TC 118 (Compressors and pneumatic machines) and complements other compressor performance, safety and classification standards within ICS 23.140, though it is a standalone test-method standard rather than a numbered series.

Q: What are the key keywords?

A: cycle energy requirement; compressor test method; energy benchmarking; positive-displacement compressor; dynamic compressor; measurement and instrumentation; ISO 4376:2024.