What are the requirements of Jiangsu green building design standards for system operation control?

In order to standardize and improve the level of green building construction in Jiangsu Province, the Design Standard of Green Building in Jiangsu Province is formulated. Jiangsu province green building design standard is applicable to the green design of new, rebuilt and expanded civil buildings in Jiangsu province. Among them, what are the requirements of Jiangsu green building design standards for system operation control? The following is the introduction of the requirements of Jiangsu green building design standard for system operation control brought by the construction network for reference.

Air conditioning terminal equipment in public buildings and central air conditioning system terminal equipment in residential buildings shall be equipped with controllers. The controller can adjust the indoor temperature, set the indoor temperature, control the start and stop of terminal equipment, and control the flow of cold and hot media.

Public buildings with a construction area of more than 20,000 square meters and equipped with central air-conditioning systems shall monitor the temperature of indoor main functional spaces and the use status of terminal air-conditioning equipment in real time.

Mechanical ventilation underground garage should monitor and control the CO concentration in real time. Public buildings with central air conditioning system should monitor and control the CO2 concentration in large conference rooms, shopping malls, outpatient halls of hospitals, stadiums and other crowded places in real time. The concentration detector should be placed in a well-ventilated crowd activity area.

The user-side water system of central air-conditioning system should adopt variable water quantity regulation and meet the following requirements:

1, terminal air conditioning equipment or water piping system shall be equipped with flow regulating valves.

2. The number of running pumps should be the same as that of cold and heat source equipment.

3. The flow of water system can be controlled by constant temperature difference or constant pressure difference. When the constant temperature difference control is adopted, the main water supply and return pipe is used as the temperature monitoring point, and the temperature sensor is paired for detection, and the paired temperature error is less than 0.3℃.

4. The water pump should adopt full frequency conversion mode.

5. The frequency limit value and frequency reduction value of the water pump motor inverter should be determined according to the lower limit value of water flow of the cold source equipment and the allowable water flow limit conditions.

All-air system shall operate in various working modes throughout the year and meet the following requirements:

1 The area of fresh air inlet duct and the area of fresh air outlet of air conditioning unit shall meet the requirements of large air volume (not less than 50% of the total air volume) or fresh air operation.

2 should calculate and analyze the annual load of air conditioning system, and determine the annual air supply state point according to the heating and air conditioning load. According to the distribution of air supply state point and outdoor state, the air treatment mode is determined.

3. Air conditioning throughout the year should make full use of the cold and heat of outdoor air to avoid cold and heat offset and reduce the opening time of heating and air conditioning equipment.

4, should provide a clear method of system partition and air treatment in each region.

The energy-saving control of cold and heat source system shall meet the following requirements:

1, according to the predicted building heating and air conditioning load and the working efficiency of cold and heat source equipment, determine the number of equipment to open. The stopped cold and heat source equipment should be able to cut off the waterway and prevent water from flowing.

2. The cold water outlet temperature of the chiller should be adjusted in stages according to the change of outdoor temperature.

3. For the compound cold and heat source system, the corresponding operation scheme should be formulated according to the resource conditions, the characteristics of different cold and heat sources and different building load requirements.

For the ground source heat pump system with a service building area of 20,000 square meters or more, the soil heat balance should be controlled.

1, the annual operation scheme based on soil heat balance should be formulated. According to the energy efficiency characteristics of ground source heat pump unit, auxiliary cooling system or auxiliary heating system, the start-up time and length of each equipment in winter and summer are determined. Improve the efficiency of ground source heat pump while ensuring the heat balance of soil.

2. Accumulated heat exchange capacity of ground heat exchanger in winter and summer shall be recorded respectively. The annual imbalance rate of heat released by soil heat pump to soil should not be greater than 10%.

Public buildings with a building area of more than 20,000 square meters and equipped with central air-conditioning systems and residential quarters with a building area of more than 50,000 square meters shall be equipped with building equipment management systems to intelligently monitor and manage the building equipment systems. Cold and heat source equipment, cold and heat medium conveying equipment, air handling units, fresh air units, ventilation equipment and their control components shall be connected to the building equipment management system.

Public buildings should be equipped with energy consumption monitoring system. And meet the following requirements:

1. The energy consumption monitoring system shall meet the requirements of Technical Specification for Energy Consumption Monitoring System of Public Buildings DGJ32/TJ11.

2, cold and heat source system of electricity, water, gas consumption and regional cold and hot energy supply should be measured separately.

3, cold and heat source equipment host, chilled water pump, cooling water pump, circulating pump and other energy consumption should be measured by the hour; The energy consumption of air supply and exhaust fans should be measured separately.

4. The cold and heat provided by the cold and heat source system shall be measured by the hour.

5. The energy consumption of air conditioning system in data center should be measured separately.

6. According to the requirements of property management ownership and energy cost management, metering devices should be set for the cold and hot metering of the terminal air conditioning system.

7. Energy consumption measurement of heating and air conditioning system should be incorporated into a unified building energy consumption monitoring system.

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