2026-04-15Views：
The calculation of suction volume by compressor displacement should be combined with thermodynamic principles and compressor performance parameters, the specific steps are as follows:
according to the law of conservation of mass:
q_{suction} = Q_{row} times frac{P_{row }}{ P_{suction}} times frac{T_{suction }}{ T_{row}} times frac{eta_{ capacity} times eta_{ temperature rise}}among them:
assumption condition:
inspiratory volume formula:
where & eta; total = & eta; capacity × & eta; machinery, the total efficiency is typically 0.7-0.85.
known conditions:
calculation process:
exhaust temperature:
inspiratory volume:
| Factors | correction direction | typical Value Range |
|---|---|---|
| clearance volume | decrease inspiratory volume | 2%-5% |
| air valve resistance | decrease inspiratory volume | 3%-8% |
| leakage loss | decrease inspiratory volume | 1%-3% |
| suction gas preheating | increase inspiratory capacity | 1%-4% |
in practical engineering, it is recommended to accurately calculate the parameters such as isentropic efficiency and volumetric efficiency in the original technical manual of the compressor, and to verify the theoretical model by regularly detecting the temperature field distribution through the thermal imager.
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