Pega Hrnjak

Experimental validation of a prototype ejector designed to reduce throttling losses encountered in transcritical R744 system operation

Stefan Elbel, Pega Hrnjak · International Journal of Refrigeration · 2007 · 436 citations

Engineering, Aerospace Engineering, Process Control +4

Frost, defrost, and refrost and its impact on the air-side thermal-hydraulic performance of louvered-fin, flat-tube heat exchangers

Yong Xia, Yi Chen Zhong, Pega Hrnjak et al. · International Journal of Refrigeration · 2006 · 143 citations

Engineering, Mechanical Engineering, Heat Transfer +13

CO2 and R410A flow boiling heat transfer, pressure drop, and flow pattern at low temperatures in a horizontal smooth tube

C.Y. Park, Pega Hrnjak · International Journal of Refrigeration · 2006 · 129 citations

Engineering, Mechanical Engineering, Physics +17

CO2 flow condensation heat transfer and pressure drop in multi-port microchannels at low temperatures

Chang Yong Park, Pega Hrnjak · International Journal of Refrigeration · 2009 · 113 citations

Engineering, Chemical Engineering, Mechanical Engineering +17

Characteristics of two-phase flow pattern transitions and pressure drop of five refrigerants in horizontal circular small tubes

Agus Sunjarianto Pamitran, Kwang‐Il Choi, Jong-Taek Oh et al. · International Journal of Refrigeration · 2010 · 107 citations

Engineering, Chemical Engineering, Air Conditioning +15