A review on applications and techniques of improving the performance of heat pipe-solar collector systems.

This research paper presents a detailed review about the recent advances concerned with the heat pipe-evacuated tube solar collectors. The reviewed papers covered various subjects related with this type of the collectors such as enhancement techniques, its structure designing and the methods used to modify it. Moreover, the effects of integration of (CPCs), types of working fluids and using of storage systems on the performance of this collector were reviewed and summarized in different tables. Depending on the reviewed papers, various conclusions and recommendations were outlined to be very useful to the readers and give them a clear road map to produce more future papers about the heat pipe- solar collector systems. [ABSTRACT FROM AUTHOR]