03086cas a2200421 a 4500 20260818173634.0 110318s1978 th uu|m rtt 0| a1eng d .b10515768 AIT Thesis no. 1405 Siddiqui, M. Saifuddin Power consumption analysis in rotating biological filters Bangkok : Asian Institute of Technology, 1978 80 p. Thesis ; no. 1405 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering of the Asian Institute of Technology, Bangkok, Thailand Thesis (M.Eng.) - Asian Institute of Technology, 1978 The research was conducted to study the effect of the parameters rotational speed (N), diameter (D), thickness (t), number of discs (n) and the density (p) and absolute viscosity (æ) of the liquid upon power consumption (P) in RBF units. The dimensional analysis of all the factors affecting power consumption gives. P/N3D5p = k [ (ND2p/æ)a, (t/D)b, n] where k, a, b are constants. Treating (t/D) , n as constants in the first phase, the equation may be written as P/N3D5p = b1 (ND2p/u)a Denoting P/N3D5p, (ND2p/æ) as Np and Nr respectively, the equation may be written in the log term as log Np = a log Nr + log b1 The above relationship was found valid as for all instances of n and t/D strong correlation co-efficient was found. The constants a and b1 were found by least square method. The constants a and b1 being function of t/D and n were regression ally analyzed with respect to t/D and n. However, b1 was found independent of n and has geometrical variation with respect to t/D. A simple equation relating a, t/D and n was developed as a= -1.795 - 0.063n - 2.642 t/D. At higher values a is independent of n. Water Purification Filtration Ouano, E.A.R., Chairperson Nguyen, Cong Thanh, Co-Chairperson Chongrak Polprasert, Examination Committee Lohani, Bindu N., Examination Committee The Royal Government of Netherlands, Scholarship Donor Asian Institute of Technology. Thesis ; no. 1405 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B23103 .b10515768 mnait u 251119 3 951012 m a u 0 mnait mnarc mnait 20 40 Barcode : 30050003027298 CREATED : 1994-05-18 RECORD # : i10647004 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050160081989 CREATED : 2016-05-13 RECORD # : i1297786x LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050121036577 CREATED : 2022-11-24 RECORD # : i1341608x LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 90152 90152 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. 1405 30050003027298 2026-08-18 17:36:34 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. 1405 30050160081989 2026-08-18 17:36:34 2026-08-18 40 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. 1405 30050121036577 2026-08-18 17:36:34 1 2026-08-18 20