GB 50365-2019 English PDFUS$1739.00 ยท In stock
Delivery: <= 10 days. True-PDF full-copy in English will be manually translated and delivered via email. GB 50365-2019: Standard for operation and management of central air conditioning system Status: Valid GB 50365: Historical versions
Basic dataStandard ID: GB 50365-2019 (GB50365-2019)Description (Translated English): Standard for operation and management of central air conditioning system Sector / Industry: National Standard Classification of Chinese Standard: P48 Classification of International Standard: 91.140.30 Word Count Estimation: 87,892 Date of Issue: 2019 Date of Implementation: 2019-12-01 Issuing agency(ies): Ministry of Housing and Urban-Rural Development of the People's Republic of China; State Administration for Market Regulation GB 50365-2019: Standard for operation and management of central air conditioning system---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.1 General 1.0.1 In order to implement the country's technical and economic policies, follow the principles of health, safety, energy saving, environmental protection, and economical and practical, standardize the operation and management of the air conditioning and ventilation system, meet reasonable use requirements, prolong the service life of the system, and respond to emergencies quickly and effectively event, formulate this standard. 1.0.2 This standard applies to the routine operation management of the air-conditioning and ventilation system under centralized management in civil buildings, as well as the emergency operation management in the event of emergencies related to the air-conditioning and ventilation system. 1.0.3 The operation and management of the air-conditioning ventilation system should make full use of the professional technology, professional equipment and professional human resources of social service organizations to improve the operation and management level. 1.0.4 The operation management of the air-conditioning and ventilation system shall not only comply with this standard, but also comply with the current relevant national standards. 2 terms 2.0.1 air conditioning air conditioning By processing and distributing air, controlling parameters such as air temperature, humidity, cleanliness, and airflow velocity in a space to meet given requirements. It is the abbreviation of air conditioning. 2.0.2 ventilation ventilation In order to improve production and living conditions, natural or mechanical methods are used to ventilate a certain space so that the air environment meets the appropriate requirements for hygiene and safety. 2.0.3 air conditioning ventilation system central air conditioning system For the purpose of air conditioning and ventilation, the sum of all equipment, pipelines and accessories, instruments and meters for centralized processing, transportation, distribution, and control of the working medium. 2.0.4 coefficient of energy consumption (CEC) for air conditioning The ratio of the total annual primary energy consumption of the air-conditioning and ventilation system to the annual cumulative value of the reference air-conditioning load. 2.0.5 Rate of hydraulic disorder The deviation between the actual flow of each pipeline in the air-conditioning water system and the design flow, and the ratio of the design flow. 2.0.6 rate of airflow disorder The deviation between the actual air volume of each branch pipe in the air system and the design air volume, and the ratio of the design air volume. 2.0.7 debugging testing adjusting and balancing During the whole process of installation, stand-alone trial operation, performance test, and system joint trial operation of each system, the prescribed methods are used to complete the testing, adjustment and balancing work. 2.0.8 Adjustment commissioning Through the whole process management of the commissioning, performance verification, acceptance and seasonal working condition verification of the air conditioning and ventilation system, the working procedures and methods to ensure the realization of the design intent and meet the actual use requirements of the user. 2.0.9 energy management contracting By providing users with services such as energy-saving diagnosis, financing, and renovation, it is a market-oriented service method that reduces energy costs in building operation and shares energy-saving benefits to achieve investment recovery and reasonable profits. 3 management3.1 Technical information 3.1.1 The design, construction, commissioning, testing, and evaluation of the air-conditioning and ventilation system should be complete and properly preserved, and should be checked against the actual situation of the system. The necessary documents file shall include the following documents. 1 Air conditioning and ventilation system equipment list and procurement information; 2 Ex-factory qualification certificate and entry inspection (test) report of main materials and equipment; 3.The factory qualification certificate, instruction manual and latest calibration record of the instrument; 4 Drawing joint review record, design change notice and as-built drawing; 5 Update, repair and renovation technical disclosure materials and completed drawings of the renovation part; 6 Inspection and acceptance records of concealed works; 7 Equipment, air duct and water pipe system installation and inspection records; 8 pipe flushing and test records; 9 Equipment stand-alone test run records; 10 No-load joint trial operation and debugging records of the air conditioning and ventilation system; 11 The comprehensive energy efficiency test report of the air conditioning and ventilation system under load; 12 The electronic version of the as-built drawing of the air conditioning and ventilation system that is consistent with the actual situation. 3.1.2 The operation management files shall be established. The operation management records of each system shall be true and complete, the information filled in shall be detailed and accurate, and the person who fills in shall sign. The operation management records shall include the following contents. 1 Air conditioning and ventilation system operation management plan and operation management records; 2 List of performance parameters of each system equipment and model parameters of vulnerable and consumable accessories; 3 Records of operating parameters of each major equipment; 4 Daily accident analysis and handling records; 5 daily patrol inspection records; 6 annual operation duty records and shift records; 7 maintenance and daily repair records of major equipment; 8 Overhaul and replacement of spare parts and wearing parts records for equipment and system components; 9 Annual operation summary and analysis data, etc. 3.1.3 The operation management strategy, control and use methods, operation instructions, and settings of different working conditions of the air-conditioning and ventilation system should be managed as technical data. It is advisable to entrust a professional organization to study and formulate, and should be perfected in practice according to the implementation situation. 3.1.4 The air-conditioning and ventilation systems of large complex and ultra-high buildings should be managed through building information model (BIM), intelligent equipment emergency management model, asset management database and equipment maintenance and repair database. 3.2 Personnel 3.2.1 Management personnel should be equipped according to the scale and complexity of the air conditioning and ventilation system, and should meet the following requirements. 1 Equipped with professional counterpart full-time management personnel and safety management personnel; 2 Establish corresponding operation teams; 3 Equipped with corresponding testing instruments and maintenance equipment. 3.2.2 The management personnel shall undergo professional training and shall be employed after passing the examination. Employing departments should establish and improve personnel training and assessment systems, and should keep relevant files. 3.2.3 The management personnel should have clear responsibilities, be familiar with the air-conditioning and ventilation system they manage, master the relevant operation strategies and operating procedures, and should have relevant professional knowledge on safety, sanitation, and energy conservation. 3.2.4 Managers should regularly inform superior managers, building users and relevant supervision and management departments of the actual status of air conditioning and ventilation system operation management and energy consumption, and should provide opinions and suggestions for system operation and management rectification. 3.5.5 The temperature, pressure, flow, heat, power consumption, fuel consumption and other monitoring and measuring instruments in the air-conditioning and ventilation system should be inspected, calibrated and maintained regularly, and the instruments should work normally. replacement or addition. 3.5.6 For software and hardware such as system data server, data acquisition gateway, monitoring and measurement, communication lines, etc., regular daily maintenance, patrol inspection, virus protection, upgrade and management should be carried out. When system abnormality is found, it should be dealt with in time, and the operation and maintenance should be recorded. 4 Safety, Health and Environment 4.1 General provisions 4.1.1 For areas with hidden risks to safety and health, or areas with special requirements for the environment, a responsibility area management system should be established. 4.1.2 It is advisable to regularly test and record the indoor air environment parameters, and the indoor environment should comply with the current relevant national standards. 4.2 Security requirements 4.2.1 When the refrigerating unit uses refrigerants that are harmful to the human body, the refrigerant leakage alarm device and emergency ventilation system should be regularly inspected, tested and maintained. The functions of the leakage alarm device and emergency ventilation system should be normal and effective. 4.2.2 The discharge or leakage of refrigerant during the use and maintenance of refrigeration equipment should be reduced, and measures should be taken to recycle the refrigerant. 4.2.3 The working status of safety protection devices should be checked regularly, and the storage conditions of various chemical dangerous goods and oil should be checked regularly. 4.2.4 The electrical control and operating system of the air-conditioning and ventilation system shall be safe and reliable, the power supply shall meet the requirements of the equipment, and the wiring shall be firm. Grounding measures should comply with the current national standard "Code for Construction Quality Acceptance of Building Electrical Engineering" GB 50303, and there must be no overload operation. 4.2.5 The anti-static grounding device of the fuel oil and gas pipeline system of the cold and heat source of the air-conditioning ventilation system shall be inspected, maintained and tested regularly. The function of the anti-static grounding device should be normal and effective. 4.2.6 The water flow switches on the chilled water and cooling water pipes of water-cooled chillers should be checked regularly and should work normally. 4.2.7 The foundation of refrigeration units, water pumps and fans should be stable, the vibration isolation device should be reliable, the transmission device should be in normal operation, the cooling, lubrication and sealing of bearings and shaft seals should be good, and there should be no overheating, abnormal sound or vibration, etc. Phenomenon. 4.2.8 In areas where there is a possibility of freezing, the fresh air unit or fresh air heating coil, and the antifreeze facilities of the cooling tower should be inspected before entering winter. 4.2.9 The pressure difference between the inlet and outlet of the condenser and evaporator of the chiller should be regularly checked and recorded, and the value should not exceed the rated resistance value of the unit. 4.2.10 The fire damper and its temperature and smoke sensing control components of the air-conditioning ventilation system should be inspected regularly. 4.2.11 Inflammable, explosive, poisonous and harmful dangerous articles shall not be placed in the equipment room of the air-conditioning and ventilation system. 4.2.12 The lithium bromide absorption refrigeration unit should be checked regularly, and the following protection devices should be able to work normally. 1 Low temperature protection device for cold water and refrigerant water; 2 Anti-crystallization protection device for lithium bromide solution; 3 High temperature protection device for the concentrated solution at the outlet of the generator; 4 Liquid level protection device for refrigerant water; 5 Cooling water cut-off or low flow protection device; 6 Anti-crystallization protection device during shutdown; 7 Low cooling water temperature protection device; 8 Canned pump overload and anti-cavitation protection device; 9 Overheating protection device for refrigerant water in the evaporator. 4.2.13 Compression refrigeration units should be inspected regularly, and the following protection devices should be able to work normally. 1 The safety protection device of the compressor; 2 High pressure protection device for discharge pressure and low pressure protection device for suction pressure; 3 The oil pressure difference protection device of the lubrication system; 4 Motor overload and phase loss protection device; 5 High temperature protection device for centrifugal compressor bearings; 6 Antifreeze protection device for cold water of horizontal shell and tube evaporator; 7 Water cut protection device for condenser cooling water; 8 Accident protection device for evaporative condenser ventilator. 4.2.14 The operating conditions of the refrigerating unit should meet the technical requirements, and there should be no over-temperature and over-pressure phenomena. 4.2.15 Safety valves, pressure gauges, thermometers, hydraulic gauges and other devices of compression refrigeration units, as well as safety protection devices such as high and low pressure protection, low temperature antifreeze protection, motor overcurrent protection, exhaust temperature protection, oil pressure difference protection, etc. should be complete, and should be checked regularly. The oil standard of the refrigeration oil of compression refrigeration equipment should be clear and eye-catching, the oil level should be normal, and the oil quality should meet the equipment requirements. 4.2.16 The pressure vessels of the air-conditioning ventilation system should be inspected regularly. 4.2.17 The ammonia refrigeration machine room should be equipped with fire-fighting and safety equipment, the quality and quantity of which should meet the requirements for emergency use. 4.2.18 Various safety and automatic control devices should be able to work normally, and any abnormalities should be recorded and reported in time. When the safety or automatic control device is deactivated under special circumstances, approval or filing procedures should be performed. 4.2.19 An emergency shutdown switch should be installed near the cooling tower, and it should be checked and maintained regularly. 4.2.20 The overheat protection device of the electric heater should be checked and maintained regularly. 4.2.21 When the room exhaust air contains toxic and harmful substances, the effectiveness of the exhaust air purification treatment should be checked regularly, and it should comply with the relevant current national emission standards. 4.3 Hygienic requirements 4.3.1 During the operation of the air-conditioning ventilation system, the fresh air volume should be reasonably controlled, and the carbon dioxide concentration in the air-conditioned room should be less than 0.1%. 4.3.2 The surrounding environment of the fresh air outlet of the air conditioning ventilation system should be clean and away from chemical or biological pollution sources, building air outlets and open cooling towers. Do not inhale fresh air from the machine room, building corridors and ceilings, and the protective nets and rainproof measures at the fresh air outlets should be checked and cleaned regularly. 4.3.3 The fresh air volume should be sent to each room in a balanced manner according to the design requirements. 4.3.4 The water quality of air-conditioning cooling water and condensed water should be tested and analyzed regularly. When the water quality does not meet the relevant current national standards, corresponding measures should be taken to improve the water quality of the air-conditioning water system. 4.3.5 After the initial operation of the air-conditioning and ventilation system and after a long period of non-operation, the operator, humidifier, condensate pan and other parts should be inspected comprehensively, and should be cleaned or replaced according to the inspection results. 4.3.6 Air filters, surface coolers and heaters should be checked, cleaned or replaced regularly. 4.3.7 The water seal of the condensed water pipe of the air-conditioning and ventilation system equipment should be checked regularly, and the condensed water should be able to be discharged smoothly. 4.3.8 There must be no dust and mildew on the surface of the air supply outlet, return air outlet and exhaust outlet in the air-conditioned room. 4.3.9 The condensed water collecting part of the air treatment equipment and the setting part of the humidifier should be inspected regularly, and there should be no accumulation of water, water leakage, corrosion and growth of harmful bacteria. 4.3.10 The equipment room of the air-conditioning and ventilation system should be dry and clean, and no sundries should be placed there. 4.3.11 The cooling tower should be kept clean, regularly inspected and cleaned, and water treatment such as filtration, corrosion inhibition, scale inhibition, sterilization and algae elimination should be carried out. 4.3.12 The air ducts and air handling equipment in the air-conditioning ventilation system shall be inspected, cleaned and inspected regularly, dust, dirt, rust and bacterial spots shall be removed, and shall meet the following requirements. 1 The air duct inspection cycle should not be less than once every 2 years, and the air handling equipment inspection cycle should not be less than once a year. 2 Cleaning should be carried out when the following situations occur.5 energy saving5.1 General provisions 5.1.1 Air-conditioning operation and management personnel should grasp the actual energy consumption of the system and should accept the energy audit of relevant departments. The distribution of energy consumption should be investigated regularly, the energy-saving potential should be analyzed, and suggestions for energy-saving operation and renovation should be put forward. 5.1.2 The owners and managers of buildings should regularly carry out energy consumption comparisons of air-conditioning and ventilation systems among similar buildings. 5.1.3 The air-conditioning operation management department should calculate the energy consumption coefficient (CEC) of the air-conditioning and ventilation system once a year. The calculation method should be implemented in accordance with Appendix C of this standard, and the calculation results should be used as the basis for monitoring and comparing the energy-saving status of the system. 5.1.4 Under the premise of meeting the design standards, the air-conditioning and ventilation system shall operate in energy-saving manner, and the room temperature for energy-saving operation may be in accordance with Table 5.1.4. Table 5.1.4 Indoor temperature setting values for energy-saving operation of the air-conditioning and ventilation system 5.1.5 During building use, the air conditioning and ventilation system should be adjusted. 5.1.6 During the operation of the air-conditioning and ventilation system, no-cost or low-cost operation measures should be adopted. 5.1.7 It is advisable to establish an air-conditioning energy management system for monitoring, statistics and evaluation. 5.2 Air Conditioning and Ventilation System Adjustment 5.2.1 Large-scale or functionally complex public buil......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB 50365-2019_English be delivered?Answer: Upon your order, we will start to translate GB 50365-2019_English as soon as possible, and keep you informed of the progress. The lead time is typically 6 ~ 10 working days. 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