Compressors single-acting cylinders

Figure 12-20. Fourth- and fifth-stage cylinder assembly of 3,500 psig pressure hydrogen compressor. Opposed single-acting cylinders balance frame-bearing loading and minimize torque fluctuations. (Used by permission Dresser-Rand Company.)...

Example 13-2. Single Cylinder Compressor, Single Acting... 

Figure 29.1 is a simplified sketch of a cylinder of a reciprocating compressor. The cylinder is shown as a single-acting cylinder. Typically cylinders are double-acting, meaning that there are valves on both ends of the cylinder and that the piston is compressing gas, in turn, on both ends of the cylinder. 

Figure 42.1 is a simplified sketch of a cylinder of a reciprocating compressor. The cylinder is shown as a single-acting cylinder. Typically... 

The compressor manufacturer must be consulted if the cylinder is to be run single acting with the frame end unloaded. Many times rod load reversal and proper lubrication may not be achieved while running single acting with the frame end unloaded. 

Figure 12-11. Ideal pressure-volume cylinder action for single-acting compressor cylinder with related piston positions. Note DV = discharge valve SV = suction valve k or n may be exponent for gas. (Used and adapted by permission Gas Engineers Handbook, 1= Ed., 1977. Industrial Press, Inc.,New York. All rights reserved.)...

Size the discharge surge drum and associated piping for a single-acting, single-cylinder, motor-driven compressor with the following performance characteristics ... 

Part 1—One-cylinder, double-acting compressor, or two-cylinder, single-acting compressor. 

Part 3—Three-cylinder, single-acting compressor. 

A twin-cylinder, single-acting compressor, working at 5 Hz, delivers air at 515 kN/m2 pressure, at fee rate of 0.2 m3/s. If the diameter of the cylinder is 20 cm, the cylinder clearance ratio 5% and the temperature of the inlet air 283 K, calculate the length of stroke of the piston and the delivery temperature. 

Positive-Displacement Compressors Reciprocating compressors are built in different sizes (up to about one megawatt refrigeration capacity per unit). Modern compressors are high-speed, mostly direct-coupled, single-acting, from one to mostly eight, and occasionally up to sixteen cylinders. 

Cylinder single-acting single-stage compressor 18,000... 

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