Bundle: Sustainable Energy, 2nd + Mindtap Engineering, 1 Term (6 Months) Printed Access Card
2nd Edition
ISBN: 9781337896535
Author: Richard A. Dunlap
Publisher: Cengage Learning
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Chapter 3, Problem 12P
- (a) Locate, from an appropriate source, the composition for methanol and ethanol. Write down the formulas for the combustion of these two hydrocarbons.
- (b) Calculate the mass of CO2 produced per kg of methanol and ethanol burned.
- (c) Locate values for the heat of combustion of methanol and ethanol and determine the mass of CO2 produced per MJ of energy.
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Compute for the stresses (initial, const and final stage)
and check for compliance in NSCP provisions.
Also compute the following:
1. Compute and check if the section is Uncracked,
Transition or Cracked as per NSCP.
2. Compute for its flexural capacity and check if it
could carry the given load.
BEAM SECTION
NOT TO SCALE
1400mm
300 $1098 400 */ 400*300*
300
200
300
100
ORIGINAL SECTION/PRECA
CAST-IN-PLACE (CIP) PART
PRECAST
LOADING AT SERVICE
M
• 21 KN (DEAD LOAD ONLY)
21KN
4.75m
9.25m
CIVEN DATA
STRANDS:
12-02 AT 120KN/STRAND (GOMM FROM BOTTOM)
8-2 AT 120HN/STRAND (120mm FROM BOTTOM)
fc 42.5 MPa (BEAM)
fc 38 MPa (CIP)
f'a = 80% or fa
fp-1860 MPa
ESTRANDS 1976Pa
OONG 23.6/m³
LOES 1-8%
Loss 18%
APPLY 3M LIVE LOAD AT CONST. PHASE
Please explain all your steps. Thank you.
10000
Quizl:Design a grit chamber for a horizontal velocity 250 mm/s, minimum flow
5,000 m³/day, maximum 20,000 m³/day, average flow is 12,500m³/day, S.O.R=
0.017 m/s, For a parabolic channels A =2/3 WD, detention time = 1 min
Q
Ac == HxW
vs for inorganic particles = SOR
As = LxW
As
V=Qxt=LxWxH
Z=CxW2
Q (m³/day) |
Ac (m²)
W (m)
| Z (m)
Chapter 3 Solutions
Bundle: Sustainable Energy, 2nd + Mindtap Engineering, 1 Term (6 Months) Printed Access Card
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- Q1: Design of trickling filter system single-stage with 3m depth, effluent BOD, of 20 mg/l, influent BODs =250mg/l, flow = 2.63 m³/min and hydraulic flow rate or hydraulic loading rate 25 m/day, r=3arrow_forward04 Q4 A waste effluent of 1.25 m/s with BOD, 183 mg/L, DO=0 mg/L and T = 20 °C is to be discharged into a river of 8 m³/s flow, BOD, = 2mg/L, DO -9.14 mg/L and T= 15 °C. At 20 °C, (K₁) is 0.3/day and (K2) is 0.9/day. The average velocity of the river is 0.8 m/s. 1) Is DO min within the environmental limitations? 2) At what distance is the maximum deficit located. 3) Draw the oxygen sag curve? Given the saturation concentration at 15 °C and at mixed temperature = 10.15 mg/Larrow_forwardCalculate 1- the effluent BOD, of a two-stage trickling filter with the following flows, BOD, and dimensions? Q-5000 m³/day, influent BOD,-280 mg/L, volume of first filter-1000 m³, volume of second filter-800 m³, filter depth-2 m, r₁=1, z=1.25. Also, 2- calculate organic loading rate (BOD, kg/day) 3- Hydraulic loading (m³/m²/d), 4- efficiency of each stage 5- overall removal efficiency.arrow_forward
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