Abstract: Based on the investigation of the inverted type evaporator of a two-phase capillary pumped loop (CPL), the improved experimental study of the same evaporator was carried out in this paper. The improved method is the addition of an aluminium plane with vertical and horizontal channels on the compositemetal screens (the capillary structure). The obtained experimental results about the working characteristics of the evaporator with different inclination angles of CPL were analyzed and compared.