ET 411C Compression Refrigeration System Didactic Equipment Vocational Training Equipment Refrigeration Training Equipment
Comparison of different expansion elements; effect of under/overfilling of the system with refrigerant Features - compression refrigeration system with transparent evaporator and transparent condenser - comparison of different expansion elements - effect of under/overfilling of the system with refrigerant - dynamic recording of the refrigerant mass flow rate Learning objectives/experiments - function and operational behaviour of the refrigeration circuit components - operation with expansion valve or with capillary tubes of different lengths - underfilling or overfilling with refrigerant - thermodynamic cycle in the log p-h diagram - from the log p-h diagram and in comparison with the measured values -- determination of the refrigeration capacity -- determination of the coefficient of performance -- determination of the efficiency of the compressor Specification [1] investigation of a refrigeration system with different expansion elements [2] refrigeration circuit consisting of a hermetic compressor, condenser, evaporator and expansion element [3] transparent finned tube heat exchangers as condenser and evaporator to observe the phase transitions of the refrigerant [4] expansion valve and capillary tubes of different lengths as expansion elements [5] receiver for underfilling/overfilling the system with refrigerant [6] sensors record pressure, temperature and flow rate [7] compressor equipped with two pressure switches [8] software for data acquisition via USB under Windows 10 [9] refrigerant R513A, GWP: 631 Technical data Compressor - power consumption: 288W at 7,2°/54,4°C - refrigeration capacity: 463W at 7,2/54,4°C Condenser and evaporator with fan - max. volumetric air flow rate condenser: 300m3/h - max. volumetric air flow rate evaporator: 180m3/h Capillary tubes: 1,5m, 3m, 6m Receiver for refrigerant: 1,3L Refrigerant - R513A - GWP: 631 - filling volume: 2,5kg - CO2-equivalent: 1,6t Measuring ranges - pressure: -1...9bar / -1...24bar - temperature: 4x -40...150°C, 1x -100...100°C - mass flow rate: refrigerant, calculated 2...19kg/h - power consumption: 0...1000W 230V, 50Hz, 1 phase 230V, 60Hz, 1 phase 120V, 60Hz, 1 phase UL/CSA optional LxWxH: 1740x800x1780mm Weight: approx. 190kg
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