How to calculate the hourly compressed air consumption of the equipment

Description of calculation method for hourly compressed air consumption of equipment

accurate calculation of the hourly compressed air consumption of the equipment is the key to the rational configuration of Granklin water lubricated single screw air compressor, the optimization of energy consumption and the guarantee of production stability. The following are general calculation methods and precautions applicable to feed, pharmaceutical and other industries:

1. basic calculation principle

compressed air consumption (unit: cubic meters/hour, m & sup3;/h) shall be based on instantaneous gas consumption of equipment with running time ratio comprehensive calculation, the core formula is:
hourly gas consumption = & sum;(instantaneous gas consumption of a single equipment × the proportion of the single-hour operation time of the equipment)

2. step-by-step calculation process

1. statistical equipment list and parameters
   • list all equipment that uses compressed air (such as pneumatic transfer pumps, packaging machines, mixing mixers, etc.);
   • record each device's rated air consumption(usually provided by the equipment manufacturer, unit: m & sup3;/min or L/s);
   • confirm equipment within a single hour actual Running Time(For example, if a packaging machine works for 40 minutes per hour, the running time accounts for 40/60 & asymp;67%).
2. Unit conversion and unification
   • if the air consumption unit of the equipment is L/s, it needs to be converted to m & sup3;/h:
     1 L/s = 3.6 m³/h
     example: if the air consumption of a pneumatic pump is 50 L/s, the air consumption per hour is 50 × 3.6=180 m & sup3;/h (if the pump continues to run).
3. Calculation of hourly gas consumption of single equipment
   • formula: hourly gas consumption of a single equipment = rated gas consumption × 60 × operating time
     example: the rated air consumption of a mixing mixer is 0.5 m & sup3;/min, run for 30 minutes per hour, the hourly air consumption is 0.5 × 60 × (30/60) = 15 m & sup3;/h.
4. Summary of gas consumption of the whole system
   • add the hourly gas consumption of all equipment to obtain the total demand:
     total hourly gas consumption = 1 hour gas consumption of equipment +2 hours gas consumption of equipment +... + Gas consumption of equipment for n hours
     example: If the system contains 3 devices and the hourly gas consumption is 15 m & sup3;/h, 30 m & sup3;/h, 20 m & sup3;/h, the total demand is 65 m & sup3;/h.

3. key correction factors

1. coefficient of simultaneous use
   • in actual production, multiple devices are usually not running at full capacity at the same time and need to be introduced. Coefficient of simultaneous use (K)(usually take 0.7-0.9, the more equipment, the lower the coefficient):
     hourly gas consumption after correction = total hourly gas consumption × K
     example: the total demand is 65 m & sup3;/h, and the usage coefficient is 0.8, then the actual air compressor capacity to be configured is 52 m & sup3;/h.
2. Pipeline leakage and pressure loss
   • leakage of compressed air may occur due to aging of pipelines and loosening of joints during transportation (usually estimated by 5%-15%), and margin shall be added on the basis of calculation results:
     final configured capacity = corrected hourly gas consumption ÷ (1-leakage rate)
     example: the revised demand is 52 m & sup3;/h, if the leakage rate is 10%, the configured capacity is 52 ÷ 0.9 & asynmp; 58 m & sup3;/h.
3. Reserved for future expansion
   • if the company plans to add new equipment or expand the scale of production, it is recommended to reserve air compressor capacity at 1.2-1.5 times the current demand to avoid repeated investment in the short term.

Adaptation Suggestion of 4. Grankering Water Lubricated Air Compressor

1. frequency conversion technology matches fluctuating demand
   granklin water lubricated single screw air compressor is equipped with frequency conversion control system, which can dynamically adjust the output power according to the actual gas consumption. For example, when the system demand is reduced from 60 m & sup3;/h to 40 m & sup3;/h, the equipment can automatically reduce frequency operation, with energy saving rate reaching more than 30%.

2. Multi-machine linkage optimization of gas supply
   for scenarios with large fluctuations in gas consumption (such as intermittent powder delivery in feed production), it is recommended to use a combination of "host + standby machine" to realize the linkage of multiple devices through an intelligent control system to ensure the stability and economy of gas supply.

3. Regular monitoring and dynamic adjustment
   install flow meters and pressure sensors to monitor gas consumption changes in real time, and recalibrate air compressor operating parameters based on production data every quarter to avoid overcapacity or shortage.

5. epilogue

scientific calculation of compressed air consumption requires comprehensive consideration of equipment parameters, operating modes and system losses. High efficiency and energy saving, stable gas supply, zero oil pollution it can accurately match the gas needs of different industries. It is suggested that enterprises should formulate the optimal gas supply scheme through professional tools or consulting the manufacturer's technical team in combination with the actual production.