Recent developments in electronics and medicine generate an interest in capillary hydrodynamics and heat transfer in Microsystems. Microsystems also are very important for aerospace industry. In the present paper we focus upon experiments in the short channel oriented horizontally with the width 40 mm, height 1 mm and length 80 mm. New flow regimes are observed and the two-phase flow pattern map is created. The obtained results are compared with the data available in the literature.