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008 110318s1978 th uu|m rtt 0| a1eng d
035 _a.b10515768
099 9 _aAIT Thesis no. 1405
100 1 _aSiddiqui, M. Saifuddin
245 1 0 _aPower consumption analysis in rotating biological filters
260 _aBangkok :
_bAsian Institute of Technology,
_c1978
300 _a80 p.
490 1 _aThesis ;
_vno. 1405
500 _aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering of the Asian Institute of Technology, Bangkok, Thailand
502 _aThesis (M.Eng.) - Asian Institute of Technology, 1978
520 _aThe 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.
650 0 _aWater
_xPurification
_xFiltration
700 1 _aOuano, E.A.R.,
_eChairperson
700 1 _aNguyen, Cong Thanh,
_eCo-Chairperson
700 0 _aChongrak Polprasert,
_eExamination Committee
700 1 _aLohani, Bindu N.,
_eExamination Committee
710 2 _aThe Royal Government of Netherlands,
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. 1405
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B23103
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