Piston compressor in refrigeration Investigations in an open two-cylinder piston compressor from refrigeration Features - open two-cylinder piston compressor from refrigeration - measure and evaluate typical variables - integrated router for operation and control via an end device and for screen mirroring on up to 10 end devices: PC, tablet, smartphone Learning objectives/experiments - determine characteristic variables of a piston compressor during experiments - determination of the volumetric efficiency at different intake pressures, pressure ratios and speeds - determination of the isothermal compressor capacity - measurement of the mechanical and electrical power consumption in dependence of the high/low pressure and pressure ratio - determination of the mechanical efficiency and the overall efficiency - GUNT Science Media Center, develop digital skills -- retrieve information from digital networks -- use digital learning media, e. g. Web Based Training (WBT) -- use visualisation systems Specification [1] test stand for piston compressor from refrigeration [2] open process with air [3] typical open two-cylinder compressor [4] control of the experimental plant using a PLC, operated by touch screen [5] screen mirroring: possible to mirror the user interface on up to 10 end devices [6] drive via asynchronous motor with frequency converter for speed adjustment [7] inlet pressure and outlet pressure (pressure ratio) adjustable via valves [8] instruments: flow meter, sensors for pressure, temperature, speed, torque (via force) [9] data acquisition via PLC on internal USB memory, access to stored measured values via WLAN/LAN with integrated router/LAN connection to customer's own network or direct LAN connection without customer network Technical data PLC: Weintek cMT3162X Compressor - speed: 465...975min-1 - number of cylinders: 2 - stroke: 26mm - borehole: 35mm - displaced volume: 50cm3 Drive motor - power: 550W - speed: 0...975min-1 Measuring ranges - torque: 0...10Nm - speed: 0...10000min-1 - power: 0...600W - temperature: 0...100°C, 0...200°C - flow rate: 0...6m3/h - pressure: -- pressure sensor: -1...1,5bar / -1...24bar 230V, 50Hz, 1 phase; 230V, 60Hz, 1 phase 120V, 60Hz, 1 phase; UL/CSA optional LxWxH: 1512x790x1414mm Weight: approx. 148kg