A reciprocating compressor in a vapour compression refrigeration system has a clearane factor of 4 percent and a swept volume of 26 litres/second. If the mass flow of refrigerant is 0.46 kg/s nd the specific volume of vapour at compressor suction and discharge are 37 liters/kg and 12 liters/kg respectively, calculate the clearance volumetric efficiency and the actual volumetric efficiency of the compressor.