The Refrigeration Engineering Laboratory is equipped with several rigs and test facilities for doing research within liquefied gas technology:
High accuracy calorimeter to measure enthalpy of complex gas mixtures at low temp.
Special test rigs rig to measure heat transfer and pressure drop in evaporating and condensing gas mixtures in gas liquefaction plants
Laboratory prototype plant to investigate new patented process for small scale liquefaction of natural gas – 2000 kg/hrs
Prototype plant to study new process for production of liquid hydrogen
Own developed Large Scale Hot-Plate Apparatus (area 2 x 3 m) to study the thermal behaviour of insulation systems designed for liquefied natural gas
Within refrigeration and heat pumps using CO 2 as refrigerant , the following rigs are worth to mention:
Laboratory prototype plants to test out solutions and equipment for heat pump water heaters and heat pump/air-conditioning plants for cars.
Test rigs for measuring heat transfer efficiency and pressure drop of CO 2 during evaporation, condensation and heat transfer in the critical phase, both ordinary tubes and micro channels
Test rigs for measuring thermal efficiency of evaporators and gas coolers based on CO 2
Test rigs for measuring capacity and efficiency of CO 2 compressors
The measurements from the laboratory have formed the scientific base for our own developed: 1) Thermodynamic packages for complex gas mixtures at low temperatures; 2) Process simulator CryoPro for thermal design of gas liquefaction processes; 3) Thermodynamic property library for CO 2 as a working fluid, especially in the critical area; 4) Advanced computer model HXSIM to simulate the performance of evaporators, condensers and gas coolers
