GB 29753-2023 (English Version)

Standard No.: GB 29753-2023
Language: Chinese, English version preview
Release Date: 2023
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB 29753-2023
Replace: GB 29753-2013

Introduction

Core changes in the standard revision

Revision dimensions	2013 edition	2023 edition
Refrigerated truck classification	Class 2 (mechanical/non-mechanical)	Class 3 (newly added mechanical refrigeration and heating type)
Temperature recorder	±1℃ accuracy	Biological products require ±0.5℃
Thermal insulation level	Ungraded	Advanced (R)/Ordinary (N)

Analysis of key technical requirements

1. Temperature monitoring system

The new regulations require that the driving temperature recorder must:

be independent of the temperature control system and be securely fixed
Biological product transport vehicles must have over-temperature sound and light alarms
Data storage ≥3 months and tamper-proof
Dual power supply (backup power supply ≥8 hours)

2. Carriage performance indicators

Typical case: A certain brand of multi-temperature refrigerated truck uses polyurethane foam material with a K value of ≤0.4W/(m²·℃), which saves 30% more energy than ordinary materials

Parameters	Requirements
Air leakage multiple	S>≤3.0h⁻¹ at 40m²
Total heat transfer coefficient	Advanced thermal insulation≤0.4W/(m²·℃)

Classification system for new refrigerated trucks

Mechanical refrigeration and heating type

12 new subclasses (AL) are added, and the ambient temperature adaptability range is expanded to -40℃~30℃ to meet the transportation needs of special items such as vaccines

Technical specifications for multiple temperature zones

Each refrigeration unit needs to be independently temperature controlled
The calculation of heat transfer area needs to include the partition structure
The number of temperature sensors is linked to the volume (20m³/piece)

Safety protection upgrade

Liquefied gas refrigerated trucks must be equipped with:

Dual-point oxygen content monitoring (<19.5% alarm)
Single container volume ≤450L
Gate valve linkage cut-off device
Pressure gauge protection cover

Implementation suggestions

Manufacturers should focus on improving:

Redundant design of temperature recording system
Use environmentally friendly insulation materials (HCFC-141b foaming agent is prohibited)
Strengthen the rigidity of the compartment structure (deformation ≤300mm)

GB 29753-2023 history

2023 GB 29753-2023 Safety requirements and test methods for refrigerated trucks transporting perishable food and biological products by road
2013 GB 29753-2013 Safety requirements and test methods for refrigerating van for transporting food and biological products on road