Calculation formula for air conditioning water flow | Calculation rules for air conditioning water system pipelines

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1. Calculation rules for air conditioning water system pipelines

The calculation rules for air conditioning water system pipelines mainly include core contents such as hydraulic calculation, pipe diameter determination, resistance balance, and special component design, which need to be comprehensively calculated based on system type (freezing/hot water), load parameters, and regulatory requirements.

1. Core Computing Principles 1 Hydraulic balance priority requires rigorous hydraulic calculations to ensure the balance of resistance in each loop and avoid uneven heating and cooling. 2. The calculation formula for chilled water flow rate related to load and flow rate is: (G=Q/(1.63 \ times \ Delta t)) (where Q is the cooling load)\ (\ Delta t \) is the temperature difference between the supply and return water, usually taken as 5 ℃.

2. Pipe diameter calculation method 1 Conventional pipe diameter determination • Recommended flow rate selection: freezing water pipe flow rate of 0.8~1.5m/s, hot water pipe flow rate of 0.5~1.2m/s; • Determine the pipe diameter based on the flow rate in the "Hydraulic Calculation Table for Water Supply and Drainage Pipelines" or design software.

2. Special calculation for condensate pipes. • Condensed water flow rate: 0.4~0.8kg of water produced per hour for every 1kW of cooling load (the larger value is taken when the latent heat load is high); The pipe diameter must meet the requirements of gravity flow discharge, with a slope of ≥ 0.003 and a DN of ≥ 20mm (for small loads).

III. Resistance Calculation and Pump Selection 1 Resistance composition • Includes host resistance (2-4m), pipeline resistance along the way, and local resistance (valves/fittings)p>

2. Pump head estimation • Chilled water pump: system resistance+10% margin (generally 20-38m); Hot water pump: system resistance+15% margin (usually 15-25m).

IV. Key Design Specifications 1 Exhaust and Discharge: Install an exhaust valve at the highest point and a drain valve at the lowest point. Install a discharge branch pipe at the root of the main riser. For straight pipe sections exceeding 40m, install an expansion joint. For large diameter high-temperature pipes, calculate the thrust and provide a fixed bracket. For pipes and fittings, use galvanized steel pipes, PPR pipes, etc. Butterfly valves (with low resistance) are preferred, and balance pipes are installed in parallel cooling towers. Correctness tags:

2. Calculation rules for air conditioning water system pipelines

The calculation rules for air conditioning water system sail virtual pipelines cover key points such as hydraulic calculation, pipe diameter determination, resistance balance, and special component design, and should be comprehensively considered in conjunction with system type, load parameters, and regulatory requirements.

1. Core Calculation Principle 1) Hydraulic balance should be given priority, and strict hydraulic calculations should be carried out to ensure the balance of resistance in each loop and prevent uneven heating and cooling.

2. Calculation method for pipe diameter: 1) Determine the conventional pipe diameter according to the

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