Scientific Research Publishing

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53291#.VLx7b8nQrzE Author(s)    Musa Atar , Nihat Döngel , Hamza Çinar Affiliation(s) Wood Products Industrial Engineering Department, Technology Faculty, Gazi University, Ankara, Turkey . ABSTRACT This study was performed to determine the effects of varnishing after impregnation with boron compounds on the combustion properties of Scotch pine. For this purpose, test samples prepared from Scotch pine ( Pinus sylvestris Lipsky ) wood were impregnated according to ASTM-D 1413-99 standard with boric acid (Ba) and borax (Bx) by vacuum technique. After impregnation, surfaces were coated by cellulosic (Cv), synthetic (Sn), polyurathane (Pu), waterborne (Wb), acrylic (Ac) and acid hardening (Ah) varnishes in accordance with ASTM D-3023 standard and then, combustion temperature was determined. According to material and process type, combustion temperature was...

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53018#.VLR7L8nQrzE Author(s)    Barinaadaa Thaddeus Lebele-Alawa , Vining Jo-Appah Affiliation(s) Department of Mechanical Engineering, Rivers State University of Science and Technology, Port Harcourt, Nigeria . ABSTRACT This paper discusses the thermodynamic analysis of a gas turbine power plant located in the equatorial rainforest of southern Nigeria. Steady state monitoring and direct collection of data from the Mk IV Speedtronics system and log books in the control room was performed. The variation of operating conditions (ambient temperature, compressor discharge temperature, turbine inlet temperature, exhaust temperature and fuel mass flow rate) on the performance of gas turbine (thermal efficiency, net power output, heat rate, specific fuel consumption and compressor work) were investigated using various thermodynamic relations and equations. T...