GB 50019-2015 Code for Design of Heating, Ventilation and Air Conditioning of Industrial Buildings

General Provisions

• 第 1.0.3 条Heating, ventilation and air conditioning design should make rational use of energy and give priority to rene…
• 第 1.0.4 条The design should conserve resources , protect the environment, and comply with safety production , hygiene ,…
• 第 1.0.5 条Heating, ventilation and air conditioning systems should be easy to construct, maintain and operate . General…

Terminology

• 第 2.0.1 条Design heating load of the heating system : The heat supplied by the heating system to the building per unit …
• 第 2.0.2 条Ventilation : The process of supplying air to and exhausting air from an indoor space by natural or mechanica…
• 第 2.0.3 条Air conditioning : The technology of treating air to bring indoor parameters such as air temperature, relativ…
• 第 2.0.4 条Cooling load : The amount of heat (including sensible and latent heat) that must be removed from the indoor s…
• 第 2.0.5 条Heating load : The amount of heat that must be added to a room per unit time to maintain the indoor temperatu…
• 第 2.0.6 条Air conditioning system : A system composed of air handling, air transportation, air distribution, and coolin…
• 第 2.0.7 条Central heating system : A heating system in which the heat source and heat emitting equipment are installed …
• 第 2.0.8 条Ventilation system : The general term for the equipment, ducts and accessories installed to achieve ventilati…
• 第 2.0.9 条Natural ventilation : A ventilation method that achieves indoor air exchange by utilizing airflow caused by o…
• 第 2.0.10 条Mechanical ventilation : A ventilation method that uses the air pressure generated by mechanical equipment su…

Indoor and outdoor design parameters

• 第 4.1.1 条Indoor air design parameters shall be determined based on building function, process requirements, economic c…
• 第 4.1.3 条Outdoor air calculation parameters shall be adopted in accordance with Appendix A of this code. For the city …
• 第 4.1.5 条The minimum outdoor air rate required per person shall comply with the following provisions: for densely occu…
• 第 4.1.7 条Indoor noise level standards: The noise from the air conditioning system in hotel guest rooms should preferab…
• 第 4.1.9 条Indoor air velocity standard: In areas where people stay for extended periods, such as hotel guest rooms and …
• 第 4.1.2条 条If the hotel contains industrial type areas such as a laundry, kitchen, or boiler room, the corresponding cla…

Heating

• 第 5.1.1 条The heating system type shall be determined based on building function, heat source conditions, energy saving…
• 第 5.1.3 条Heating systems should be equipped with heat metering devices. In hotel buildings, heat meters should prefera…
• 第 5.2.1 条Heating load calculation shall include envelope heat loss, cold air infiltration heat loss, cold air intrusio…
• 第 5.2.5 条Heating system supply return water temperature difference: for hot water heating systems, it should not be le…
• 第 5.3.2 条Radiator heating systems shall use cast iron, steel, or aluminum radiators, and the working pressure shall me…
• 第 5.3.5 条The spacing of heating pipes or heating cables in radiant heating systems (such as underfloor heating) shall …
• 第 5.4.3 条Heating pipes shall be laid with a slope; the slope of hot water pipes should be 0.003 (3‰) and shall be dire…
• 第 5.5.2 条The heating system should be equipped with air venting devices. In hotel buildings, automatic air vents shoul…
• 第 5.6.1 条The water quality of the heating system shall comply with the "Water Quality for Industrial Boilers" standard…
• 第 5.7.3 条Circulating water pumps in the heating system shall be high efficiency energy saving pumps, with flow rate an…

Ventilation

• 第 6.1.5 条Emergency ventilation : Rooms where hazardous substances may be released (e.g., gas boiler rooms, diesel gene…
• 第 6.1.8 条Kitchen ventilation : Mechanical ventilation air change rate for kitchen hot processing areas: Chinese restau…
• 第 6.2.1 条Natural ventilation : For natural ventilation driven by thermal pressure or wind pressure, the lower edge of …
• 第 6.3.1 条Mechanical ventilation : For rooms that emit residual heat, residual moisture, or hazardous substances (such …
• 第 6.3.2 条Supply air system : Location of the outdoor air intake of a mechanical supply air system: it shall be located…
• 第 6.3.5 条Fire dampers : Fire dampers with a nominal actuation temperature of 70℃ shall be installed where ventilation …
• 第 6.3.9 条Exhaust system : Exhaust systems for different rooms (e.g., guest rooms, corridors, public restrooms) should …
• 第 6.4.1 条Equipment room ventilation : Independent mechanical ventilation systems should be provided for equipment room…
• 第 6.4.5 条Smoke proof stairwell and its vestibule : This code does not directly cover smoke control and exhaust (govern…

Air conditioning

• 第 9.1.1 条The design parameters of the air conditioned zone shall be determined according to the building's use, comfor…
• 第 9.1.3 条The outdoor air volume of the air conditioning system shall not be less than the minimum outdoor air volume r…
• 第 9.2.1 条The cooling and heating sources of the air conditioning system should be comprehensively determined based on …
• 第 9.2.5 条When water cooled chillers are used, the cooling water system shall be provided with cooling water circulatin…
• 第 9.3.2 条The air conditioning air system design should reasonably divide systems to avoid areas with different orienta…
• 第 9.3.6 条All air air conditioning systems shall be capable of full fresh air operation or adjustable fresh air ratio ,…
• 第 9.4.2 条Hydraulic balancing calculations shall be performed for the air conditioning water system, and the pressure l…
• 第 9.4.5 条The supply return water temperature difference of the air conditioning water system should not be less than 5…
• 第 9.5.1 条Air handling equipment in air conditioning systems (such as air handling units and fan coil units) shall be p…
• 第 9.6.3 条The air conditioning system shall be provided with an automatic control system to achieve automatic regulatio…

Cooling and heating sources

• 第 8.1.2 条The cooling and heating source scheme shall be determined through technical and economic comparison based on …
• 第 8.1.3 条When electric compression chillers (heat pumps) are used, their nominal working condition coefficient of perf…
• 第 8.2.1 条The number of chillers (heat pumps) should be no fewer than 2 and no more than 4. When the cooling capacity o…
• 第 8.2.3 条The temperature difference between the cooling water inlet and outlet of the chiller should not be less than …
• 第 8.3.2 条When gas fired boilers are used as the heat source, the rated thermal efficiency of the boilers shall not be …
• 第 8.3.4 条A standby boiler shall be provided in the boiler room. When one boiler is out of service, the heat output of …
• 第 8.4.1 条When air source heat pump units are used, their nominal heating coefficient of performance (COP) shall not be…
• 第 8.5.2 条The heating and cooling source equipment room should be located close to the load center and shall meet the r…
• 第 8.6.1 条Cooling tower selection shall be determined based on local meteorological conditions, cooling water temperatu…
• 第 8.7.3 条The heating and cooling source system shall be equipped with energy metering devices, including heat/cooling …
• 第 第8.1.3条 条Note : Among the above clauses, Clauses 8.2.1, 8.3.2, 8.3.4, 8.4.1 and 8.6.1 contain specific data parameters…

Monitoring and control

• 第 11.1.1 条Heating, ventilation and air conditioning systems shall be provided with monitoring and control devices, incl…
• 第 11.3.2 条Variable air volume (VAV) air conditioning systems should monitor supply air temperature and static pressure …
• 第 11.6.1 条The system should have fault alarm functions, including equipment faults (such as fan and water pump overload…

Monitoring and Control

• 第 11.1.2 条When the system is large in scale or centralized management is required, a centralized monitoring system shou…
• 第 11.2.1 条Monitoring and control of the heating system shall include: supply and return water temperature, pressure, an…
• 第 11.2.2 条Monitoring and control of the ventilation system shall include: start/stop control, status display and fault …
• 第 11.3.1 条Monitoring and control of the air conditioning system shall include: supply and return water temperature (e.g…
• 第 11.4.1 条Monitoring and control of the cooling and heating source system shall include: start/stop staging control of …
• 第 11.4.2 条Pumps (chilled water pumps, cooling water pumps, hot water circulation pumps) shall be provided with variable…
• 第 11.5.1 条Energy metering devices should be installed on the main supply and return water pipes of the cooling/heating …
• 第 11.5.2 条The sensor accuracy of the monitoring and control system shall meet the requirements: temperature sensor accu…
• 第 11.6.2 条In hotel buildings, when an all air air conditioning system is adopted, interlock control of fresh air and ex…

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