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Predrag Stojan Hrnjak

19982019
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Research Output 1998 2019

A flow regime map for condensation in macro and micro tubes with non-equilibrium effects taken into account

Xiao, J. & Hrnjak, P. S., Mar 1 2019, In : International Journal of Heat and Mass Transfer. 130, p. 893-900 8 p.

Research output: Contribution to journal › Article

Macros
Condensation
condensation
tubes
Visualization

Effect of inclination on heat transfer and flow regimes in large flattened-tube steam condensers

Davies, W. A., Kang, Y., Hrnjak, P. S. & Jacobi, A. M., Feb 5 2019, In : Applied Thermal Engineering. 148, p. 999-1006 8 p.

Research output: Contribution to journal › Article

Condenser tubes
Heat transfer
Steam
Void fraction
Condensation

Flow patterns and plug/slug flow characteristic of R134a in a 0.643 mm microchannel tube

Li, H. & Hrnjak, P. S., Apr 1 2019, In : International Journal of Heat and Mass Transfer. 132, p. 1062-1073 12 p.

Research output: Contribution to journal › Article

flow characteristics
plugs
microchannels
Microchannels
Flow patterns

Flow regimes during condensation from superheated vapor

Xiao, J. & Hrnjak, P. S., Apr 1 2019, In : International Journal of Heat and Mass Transfer. 132, p. 301-308 8 p.

Research output: Contribution to journal › Article

Transition flow
Condensation
condensation
Vapors
vapors

Flow visualization of R1234ze(E) in a 0.643 mm microchannel tube

Li, H. & Hrnjak, P. S., Jun 1 2019, In : International Journal of Heat and Mass Transfer. p. 950-961 12 p.

Research output: Contribution to journal › Article

flow visualization
Flow visualization
microchannels
Microchannels
Vapors