TS 1307

TS 1307 is a terminology-and-notation standard for refrigeration, defining the principal quantities used in the field together with their symbols and units. Standards of this kind help engineers, designers, and technical writers use the same notation consistently across drawings, specifications, and calculation documents.

Why units and symbols matter in refrigeration

Refrigeration involves closely related quantities such as temperature, pressure, heat transfer, cooling capacity, energy, and mass flow. Using clear symbols and appropriate SI-based units makes technical communication easier and helps calculations remain comparable from one document or system to another. In general technical practice, this type of standard reduces ambiguity when the same concept might otherwise be written in different ways.

According to the title and scope, this standard covers the main quantities used especially in refrigeration, together with their symbols and units of measurement. The bibliographic reference to ISO 786:1968 also indicates alignment with an established international notation framework. In practice, that supports more orderly engineering documentation and more consistent presentation in catalogs, manuals, and design records.

• Naming the principal refrigeration quantities
• Assigning symbols to those quantities
• Standardizing the units of measurement
• Improving consistency in technical documents and drawings