TY  - SER
AU  - Siddiqui,M.Saifuddin
AU  - Ouano,E.A.R.
AU  - Nguyen,Cong Thanh
AU  - Chongrak Polprasert, 
AU  - Lohani,Bindu N.
ED  - The Royal Government of Netherlands, 
TI  - Power consumption analysis in rotating biological filters
T2  - Thesis
PY  - 1978///
CY  - Bangkok
PB  - Asian Institute of Technology
KW  - Water
KW  - Purification
KW  - Filtration
N1  - 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
N2  - 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.
UR  - http://203.159.5.9/ait-thesis/detail.php?q=B23103
ER  -