GB/T 29466-2023 (English Version)

Standard No.: GB/T 29466-2023
Language: Chinese, Available in English version
Release Date: 2023
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 29466-2023

Scope: General GB/T7251.4 Low-voltage switchgear and controlgear Part 4: Special requirements for complete sets of equipment for construction sites (ACS)

Introduction

Core changes in the standard revision

2012 version	New content in the 2023 version	Technical impact
Applicable only to detachable plate heat exchangers	Extended to welded/shell and tube heat exchangers	Scope of application expanded by 30%
No energy efficiency requirements	Mandatory motor energy efficiency rating	Energy consumption reduced by 15-20%
Basic control functions	New definition of intelligent heat exchanger units	Requires remote operation and maintenance platform configuration

Key technical parameter specifications

Typical unit design pressure priority value:

Steam system: ≤0.5MPa/160℃
Liquid system: ≤2.5MPa/150℃

Upper limit of rated heat load of unit: 12MW, flow rate control requirements:

Steam pipeline: ≤35m/s below DN200
Liquid pipeline: ≤3.5m/s and specific friction resistance ≤400Pa/m

Key points for energy efficiency improvement

Preferential use of YE3 series high-efficiency motors (GB/T 28575)
Circulation pump/make-up pump must be equipped with an independent inverter
Plate heat exchanger must be marked with energy efficiency grade
System integrated climate compensation function

Intelligent control system requirements

Functional module	Technical requirements	Test standards
Data acquisition	10s refresh rate, ±1℃ accuracy	GB/T 32224
Remote communication	Support Modbus/RS485	GB/T 36478.4
Safety protection	IP54 protection grade	GB/T 15479

Key tips for installation and maintenance

Precautions for hydraulic test:

Test pressure = 1.3 times the design pressure
Austenitic stainless steel equipment chloride ion ≤ 25mg/L
Pressure holding time ≥ 30 minutes

Chemical cleaning specifications:

Chloride ion concentration ≤ 300mg/L
Wire brush is prohibited for cleaning plates
Re-pressure test is required after cleaning

GB/T 29466-2023 Referenced Document

CJ/T 34 Coating regulations for liquefied petroleum gas cylinders
CJJ 28-2014 Code for construction and acceptance of city heating pipelines
GB 17167-2006 General principle for equipping and managing of the measuring instrument of energy in organization of energy using
GB 50015 Code for design of building water supply and drainage
GB 50040 Power machine foundation design standard
GB 50054 Code for design of low voltage electrical installations
GB 50174 Data Center Design Specification
GB 50236-2011 Code for construction of field equipment, industrial pipe welding engineering
GB 50264 Code for design of industrial equipment and pipeline insulation engineering
GB/T 12243 Spring loaded safety valves
GB/T 12459 Steel buttwelding pipe fittings—Types and parameter
GB/T 12668.2 Adjustable speed electrical power drive systems Part 2: General requirements--Rating specifications for low voltage adjustable frequency a.c. power drive systems
GB/T 12706.1 Power cables with extruded insulation and their accessories for rated voltages from 1 kV (Um=1.2 kV) up to 35 kV (Um=40.5 kV)—Part 1: Cables for rated voltage of 1 kV(Um=1.2 kV)and 3 kV(Um=3.6 kV)
GB/T 12706.2 Power cables with extruded insulation and their accessories for rated voltages from 1 kV (Um=1.2 kV) up to 35 kV (Um=40.5 kV)—Part 2: Cables for rated voltages from 6 kV(Um=7.2 kV) up to 30 kV(Um=36 kV)
GB/T 12706.3 Power cables with extruded insulation and their accessories for rated voltages from 1kV (Um=1.2kV) up to 35kV (Um=40.5kV)—Part 3: Cables for rated voltages of 35kV(Um=40.5kV)
GB/T 12712 Technical management requirements for condensate recovery and steam traps in steam heating systems*， 2023-09-07 Update
GB/T 13296 Stainless steel seamless steel pipes for boilers and heat exchangers*， 2023-11-27 Update
GB/T 14976 Seamless stainless steel pipes for fluid transport
GB/T 15479 Technical requirements and test methods of insulation resistance and insulating strength for use in industrial process measurement and control instruments
GB/T 26921 The guide of design optimization for motor systems (fans, pumps, air compressors)
GB/T 28575 Specification for YE3 series (IP55) three-phase induction motors (Frame size 63～355)
GB/T 29531-2013 Methods of measuring and evaluating vibration of pumps
GB/T 29871-2013 General data interface technology protocol of energy metering instrument
GB/T 32224 Heat meters
GB/T 36478.4-2019 Internet of things—Information sharing and exchanging—Part 4:Data interface
GB/T 39583-2020 Requirement of intelligent technology for energy-saving retrofit of existing building
GB/T 39959-2021 Liquid pumps and pump units—Noise test code—Grades 2 and 3 of accuracy
GB/T 8163 Seamless steel pipes for liquid service
GB/T 8923.1-2011 Preparation of steel substrates before application of paints and related products.Visual assessment of surface cleanliness.Part 1:Rust grades and preparation grades of uncoated steel substrates and of steel substrates after overall removal of previous coa
GB/T 9129 Specifications of Non-metallic flat gaskets for pipe flanges
HG/T 3651 Unalloyed titanium and titanium alloy butt - welding seamless pipe fittings
NB/T 47004.1 Plate Heat Exchangers Part 1: Removable Plate Heat Exchangers
NB/T 47008 Carbon steel and alloy steel forgings for pressure equipment
NB/T 47009 Alloy steel forgings for low temperature pressure equipment
NB/T 47010 Stainless steel and heat-resistant steel forgings for pressure equipment
NB/T 47045 Brazed Plate Heat Exchanger*， 2024-05-24 Update

GB/T 29466-2023 history

2023 GB/T 29466-2023 Plate heat exchanger unit
2012 GB/T 29466-2012 Plate heat exchanger unit