229. An ammonia water-cooled compressor receives the refrigerant at specific volume 62 L/kg.

It has a piston displacement rate of 5 m3

/min. If a squirrel cage motor running at 1200 rpm

drives the compressor and average piston speed is 490 m/min, calculate size of cylinder bore.

A. 20.4 cm B. 26.0 cm C. 16.13 cm D. 13.6 cm