Flow patterns and pressure drop in isothermal gas-liquid concurrent flow in a horizontal capillary tube.

Condensation heat transfer characteristics of R-22, R-134a and R-410A in a single circular microtube

“…Several researchers [39][40][41][42][43][44] have tried to visualize the flow pattern in the single circular microtubes to investigate the flow mechanism. Most of their studies were significant gaps in the understanding of condensation flow regimes in single circular microtubes.…”

Fundamental data on the gas–liquid two-phase flow in minichannels

“…Fundamental information such as flow pattern, void fraction and pressure loss are all important parameters in designing a heat exchanger. Much interesting data on such flow parameters has been clarified in capillary circular tubes [1][2][3][4][5][6] and in narrow rectangular channels [7][8][9][10][11][12][13].…”

Condensation pressure drop of R22, R134a and R410A in a single circular microtube

“…There has been relatively little work done on the development of condensation flow regime maps for the single circular microtubes of d \ 3 mm. Several researchers [15][16][17][18][19][20] have tried to visualize the flow pattern in the single circular microtubes to investigate the flow mechanism. Most of their studies were significant gaps in the understanding of condensation flow regimes in single circular microtubes.…”