Akademik Veri Yönetim Sistemi
JOURNAL OF THE FACULTY OF ENGINEERING AND ARCHITECTURE OF GAZI UNIVERSITY, cilt.28, sa.4, ss.855-863, 2013 (SCI-Expanded)
Collecting sun rays by using parabolic trough-type solar collector is one of the effective methods for utilization of solar energy. Parabolic troughcollectorsare preferredfor the production ofsteamwith the sun. In addition, it has been used efficiently in the fields such as obtaining hot water, heating of spaces, air conditioning-heating applications, industrial processes and the production of electricity. Concentrated solar radiation heats the water in the pipe by falling on the receiver pipe in the focus of the collector. Thus, solar radition becomes useful heat. In this study, parabolic solar collector with 90cm collector aperture and 83 degrees rim angle (Qr) and consisting of double parabolic trough was designed. In order to reduce heat losses in the system, receiver pipe and glass tube is placed coaxially, also air between the two pipes vacuum were evacuated. In the designed parabolic collector, two-axis solar tracking system is used. Performance tests in which water was used as the heat transfer fluid were conducted in the climatic conditions of Tarsus. Minimum and maximum measured efficiency values of the system are 37.59 % and 50.60 % and average efficiency is 43.03%.