N2 - The requirements for environmentally friendly refrigerants promote application of CO2and water as working fluids. However there are two problems related to that, namely high temperature limit for CO2in condenser due to the low critical temperature, and low temperature limit for water being the result of high triple point temperature. This can be avoided by application of the hybrid adsorption-compression system, where water is the working fluid in the adsorption high temperature cycle used to cool down the CO2compression cycle condenser. The adsorption process is powered with a low temperature renewable heat source as solar collectors or other waste heat source. The refrigeration system integrating adsorption and compression system has been designed and constructed in the Laboratory of Thermodynamics and Thermal Machine Measurements of Cracow University of Technology. The heat source for adsorption system consists of 16 tube tulbular collectors. The CO2compression low temperature cycle is based on two parallel compressors with frequency inverter. Energy efficiency and TEWI of this hybrid system is quite promising in comparison with the compression only systems. L1 - http://www.czasopisma.pan.pl/Content/94598/PDF/09_paper.pdf L2 - http://www.czasopisma.pan.pl/Content/94598 PY - 2014 IS - No 3 September EP - 154 DO - 10.2478/aoter-2014-0026 KW - hybrid refrigerating cycle KW - adsorption KW - two stage refrigerating A1 - Cyklis, Piotr A1 - Kantor, Ryszard A1 - Ryncarz, Tomasz A1 - Górski, Bogusław A1 - Duda, Roman PB - The Committee of Thermodynamics and Combustion of the Polish Academy of Sciences and The Institute of Fluid-Flow Machinery Polish Academy of Sciences DA - 2014 T1 - Experimental investigation of the ecological hybrid refrigeration cycle SP - 145 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/94598 T2 - Archives of Thermodynamics