Analysis of the influence of the volume of the gas suction cavity on the operation of a piston compressor with a pumpless cooling system

Effect of the gas cavity volume in suction on operation of the piston compressor with a pumpless cooling system was considered. The developed mathematical model made it possible to numerically analyze effect of the suction cavity volume, which was provided by a gas channel with the working cavity in the piston compressor with two suction valves. According to results of the numerical experiment, it was established that a decrease in the suction cavity volume when sucking from the atmosphere led to an increase in the coolant flow rate and the main integral characteristics, including the feed coefficient and the indicated isothermal efficiency coefficient. In the case of a suction pipeline, the suction cavity volume should be selected from the condition of damping the pressure fluctuations that appear in it.
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