1. Preparation work before debugging
1. Prepare a personnel organization list for executing system testing and balancing. The relevant key personnel must have the ability to test and balance this project, and have experience with multiple Experience in project air-conditioning system debugging;
2. Prepare a planned schedule for system testing and balancing;
3. Prepare the planned steps, phases, and sub-systems for system testing and balancing Testing, balancing plans and report forms;
4. Prepare a list of instruments and meters used for testing and trial operation and ensure that all test instruments and meters are within the allowed measurement period;
5 , Check the manufacturing plant test result certification documents (copies) of ground source heat pump units, fresh air units, water/water heat exchangers, water pumps, soil heat exchange coils, floor radiant coils, capillary tubes, water collectors, valves, etc. And construction site test certification documents (copies) during construction, including air tightness test, light leakage test of air duct system, pressure test of water piping system, stand-alone commissioning test of fresh air unit, water pump, fan coil equipment, etc. to prove that it has debugging capabilities Conditions;
6. Testing, adjustment and balancing of the relevant systems can only be carried out when the outdoor conditions are close to the design conditions.
II. Requirements for preliminary commissioning and pre-inspection
1. Check all equipment and devices included in the scope of this air conditioning system. They must be thoroughly cleaned, lubricated and inspected before commissioning. , remove all construction waste and debris left on the air duct system, water piping system, motors and equipment one by one to ensure the reliability of system operation;
2. At the same time, all pipes must be thoroughly flushed to ensure Flush away all foreign debris in the pipeline;
3. All automatic control components, control system functions, interlock controls and safety devices must be inspected to ensure normal operation;
4. All valves, dampers, switches, control components, etc. have been adjusted and can be put into normal service, and the valves must be ensured to be tightly closed;
5. All instruments have been accurately adjusted and are easy to operate Reading;
6. If the original factory technical personnel are required to be present for debugging of all major system equipment, the relevant technical personnel must be present.
3. Requirements for phased, system-based debugging and balancing plans
1. Testing and balancing requirements
1.1 Air volume balance
1.1.1 Adjust the fan to meet the total air volume requirement;
1.1.2 Use a pitot tube on the main pipe and branch pipe to move back and forth laterally along the cross section of the air duct to measure the air volume. It can be used with an inclined Pipe pressure gauge or mini differential pressure gauge for measurement. After completing the measurement and adjustment, seal all test holes with cover plugs;
1.1.3 Use a direct-reading anemometer to measure the air volume of all air supply outlets or inlet grilles and diffusers;
1.1.4 Use the air volume regulating valve to adjust the air volume of each branch pipe to achieve the purpose of air volume balance. After the adjustment work is completed, the position mark must be made on the regulating air valve;
1.1.5 Not available The guide blades, grilles, etc. of the air outlet are used to adjust the air volume;
1.1.6 After completing the air volume adjustment of each grille, adjust the direction of the guide blades of the grille to achieve the best performance when it is officially used. Air supply diversion effect.
1.2 Water flow balance
1.1.1 Use annular pipes or portable water meters to measure and balance water flow;
1.1.2 When adjusting and When balancing the water system, the automatic control valve must be adjusted to allow full load flow to pass through the coil;
1.1.3 Measure the water pressure difference to determine the flow rate of the water pump;
1.1. 4 Use a balance regulating valve or automatic flow control valve to adjust the water system; after the adjustment work is completed, position marks must be engraved on each balance regulating valve;
1.1.5 After adjusting the balance, record all The current flow of the circulating water pump.
2. Phased and sub-system debugging plan
1.1 Ground source side soil heat exchanger subsystem
1.1.1 Complete pipeline loop according to specification requirements Flush;
1.1.2 Supplement the water volume in the loop to the design working pressure;
1.1.3 Start the circulating water pump, and clean the water pump and soil heat exchanger coil according to Article 5 of this article The report requires flow balance and pressure difference debugging to meet the design requirements, and the post-debugging data is recorded.
1.2 Replace the fresh air subsystem
1.1.1 Check whether the fresh air unit is working normally, and all air valves in the air duct system should be fully open;
1.1. 2. Adjust the air inlet, supply, fresh air volume, and exhaust air volume of the fresh air unit to meet the design requirements. After the adjustment work is completed, mark the position on the adjusting damper;
1.1.3 Debugging all Balance the air volume at the air supply outlet and return air outlet to meet the design requirements. After the adjustment work is completed, mark the position on the adjusting damper;
1.1.4 Carry out fresh air according to the requirements of the report in Article 5 of this article Debug the unit and air supply/return vents to meet the design requirements, and record the data after debugging;
1.1.5 Conduct a pressure test on air-conditioned rooms with positive pressure requirements and record the data.
1.3 Floor heating subsystem
1.1.1 Flush the complete pipeline loop according to specifications;
1.1.2 Supplement the water volume in the loop to the design working pressure ;
1.1.3 Start the circulating water pump, perform flow balance and pressure difference debugging on the water pump and floor heating coil according to the requirements of the fifth report in this article to ensure that the design requirements are met, and record the post-debugging data.
1.4 Capillary radiation subsystem
1.1.1 Flush the complete pipeline loop according to specifications;
1.1.2 Supplement the water volume in the loop to the design working pressure ;
1.1.3 Start the circulating water pump, conduct flow balance and pressure difference debugging on the water pump and capillary coil according to the requirements of the fifth report in this article to ensure that the design requirements are met, and record the post-debugging data.
1.5 Joint operation of air conditioning system
1.1.1 First check the room tightness of the entire air conditioning system to ensure that the room is at positive pressure when the air conditioner is running;
1.1.2 Start the ground source side soil heat exchanger subsystem, replacement fresh air subsystem, capillary radiation subsystem (summer)/floor heating subsystem (winter);
1.1.3 After confirming that each subsystem is operating normally, Start the ground source heat pump host;
1.1.4 Debug the ground source heat pump host, set the inlet/outlet water temperature on the load side of the unit, and set the room temperature control to the design temperature to meet the design requirements;
1.1.5 Set the secondary side temperature and flow rate of the water/water heat exchanger to meet the design requirements, and record the test data;
1.1.6 Debugging the ground source side soil heat exchanger subsystem, replacement fresh air subsystem, capillary radiation subsystem (summer)/floor heating subsystem (winter) flow to meet the design requirements, and record debugging data;
1.1.7 Debugging the fresh air unit /The outlet water temperature and water flow rate shall meet the design requirements, and the test data shall be recorded (the humidification device is required to be started in winter);
1.1.8 Measure the outlet temperature of the corresponding number of the air supply outlet according to the requirements of the fifth report in this article , and record the test data;
1.1.9 Measure the inner surface temperature of the capillary area/floor heating tube area at a distance of 1 meter according to the requirements of the fifth report in this article, and adjust the system inlet water temperature to meet the design requirements, and Record test data;
1.1.10 Determine the temperature and humidity within a 1.5-meter-high space in the air-conditioned area and within a 1-meter distance. By comprehensively adjusting the fresh air parameters, capillary (summer) parameters, floor heating pipe (winter) parameters, and fresh air Humidification amount (winter), ground source heat pump host load, etc., so as to meet the design requirements, and record the test data;
1.1.11 After debugging and balancing and meeting the design parameter requirements, comprehensively measure the air conditioning system of this project. Ground source heat pump unit, fresh air unit, circulating water pump, water/water heat exchanger, capillary tube/heating/soil heat exchanger coil, air duct system, air outlets, air parameters of each air conditioning area, etc.
1.6 Issue debugging reports.
IV. Requirements for debugging results report
The report should contain at least the following data:
1. Types, models and scale adjustment of all measuring instruments Date;
2. Conclusion;
3. Signature of commissioning personnel; and the following requirements:
4. Air volume adjustment balance report;
5.1 Fresh air treatment unit
Measure the wind pressure difference of each segment when the fresh air treatment unit operates under normal operating conditions, and the status of the inlet/outlet air, and compare it with the technical data provided by the manufacturer For review.
4.1.1 Fresh air volume;
4.1.2 Total supply air volume;
4.1.3 Total return air volume;
4.1 .4 Exhaust air volume;
4.1.5 Air supply outlet static pressure;
4.1.6 Motor operating current;
4.1.7 Fan speed;
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4.1.8 Inlet/outlet/exhaust air temperature;
4.1.9 Unit noise;
4.1.10 The above 9-point values, design requirements, and original equipment parameters comparison.
5.2 Wind speed and air volume tests in the main air duct and main branch ducts
4.2.1 Location and number of measuring point plan drawings
4.2.2 Air duct Size;
4.2.3 Measuring points required to measure wind speed;
4.2.4 Wind speed values ??measured at each measuring point;
4.2.5 Air duct Average wind speed;
4.2.6 Comparison of total air volume and measured air volume with design required air volume.
5.3 Each air supply and air inlet
4.3.1 The plane drawing position and corresponding number of the air supply outlet and air inlet;
4.3.2 Type and form of air outlet;
4.3.3 Effective cross-sectional area coefficient, inner frame or connection neck area;
4.3.4 Actual measured wind speed;
4.3.5 The actual measured air volume and the comparison between the actual air volume and the design air volume;
4.3.6 The adjusted position of the air guide vane or regulating valve.
5. Water volume adjustment balance report;
5.1 Fresh air treatment unit
Measures the inlet/outlet water volume when the fresh air treatment unit operates under normal operating conditions. status and review it with the technical data provided by the manufacturer.
5.1.1 Water flow;
5.1.2 Inlet water temperature;
5.1.3 Outlet water temperature;
5.1.4 Inlet water pressure;
5.1.5 Outlet water pressure;
5.1.6 Comparison of the above five points with design requirements and original equipment parameters.
5.2 Water pump
5.2.1 Water flow;
5.2.2 Outlet water pressure head (full flow, design flow and no flow state);
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5.2.3 Suction pressure head (full flow, design flow and no flow state);
5.2.4 Mark the test results on the characteristic curve of the water pump;
5.2.5 Current (full flow, design flow and no flow state);
5.2.6 Comparison of the above five points with design requirements and original equipment parameters.
5.3 Capillary tube/heating/soil heat exchanger coil (each sub-water collector should be numbered and marked on the drawing)
5.3.1 The inlet/outlet of the main pipe of each sub-water collector Flow;
5.3.2 The inlet/outlet water flow rate of each branch pipe of each sub-water collector;
5.3.3 The inlet/outlet water temperature of each branch pipe of each sub-water collector;
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5.3.4 The inlet/outlet water pressure drop of each branch pipe of each sub-water collector;
5.3.5 The adjustment position of the regulating valve;
5.3.6 The above actual measurement Comparison of numerical values ??with design requirements.
5.4 Water/water heat exchanger
5.4.1 Primary water side (cold/hot medium) flow rate;
5.4.2 Primary water side (cold medium) /heating medium) inlet/outlet water temperature;
5.4.3 Primary water side (cold/heating medium) inlet/outlet water pressure drop;
5.4.4 secondary water side flow rate;
5.4.5 Secondary water side inlet/outlet water temperature;
5.4.6 Secondary water side inlet/outlet water pressure drop;
5.4.7 above Comparison of actual measured values ??with design requirements and original equipment parameters.
5.5 Ground source heat pump unit
5.5.1 Load side chilled water flow;
5.5.2 Load side chilled water inlet/outlet temperature;
5.5.3 Load side chilled water inlet/outlet pressure difference;
5.5.4 Ground source side cooling water flow rate;
5.5.5 Ground source side cooling water inlet /Outlet water temperature;
5.5.6 Ground source side cooling water inlet/outlet water pressure difference;
5.5.7 Unit full load current;
5.5.8 Full load power of the unit;
5.5.9 Safety protection control of the unit;
5.5.10 Refrigeration/ Readings of heat supply units;
5.5.11 Comparison of the above measured values ??with design requirements and original equipment parameters.
6. Outlet temperature measurement report with corresponding number of all air supply outlets;
7. Continuous measurement report of surface temperature within 1 meter distance of all capillary area/floor heating pipe area and corresponding distribution points Floor plan;
8. 1.5-meter-high space in all air-conditioned areas, continuous measurement report of temperature and humidity within 1 meter distance and corresponding layout plan;
9. Positive pressure measurement in all air-conditioned rooms Reports and corresponding room plans;
10. Background noise and system noise (fan coil high speed) measurement reports and corresponding layout plans at 1.5-meter-high positions in all air-conditioned areas.
11. Prepare a report for measuring the noise in the computer room.