
Concept explainers
(a)
The high heat value in terms of moisture free.

Answer to Problem 7.12P
The high heat value in terms of moisture free is
Explanation of Solution
Given:
Moisture content is
Weight of sample placed in calorimeter is
Gross calorific value is
Weight of ash that remains in the bomb calorimeter after combustion is
Concept Used:
The moisture heat is subtracted from the original heat energy in case of moisture free condition.
Calculation:
Write the expression for high heat value in moisture free condition.
Here, high heat value in moisture free condition is
Convert the mass of the sample to pounds.
Substitute,
Conclusion:
Thus, the high heat value in moisture free condition is
(b)
The high heat value in moisture free and ash free conditions.

Answer to Problem 7.12P
The high heat value in moisture free and ash free condition is
Explanation of Solution
Concept Used:
The moisture heat and the ash heat is subtracted from the original heat energy in case of moisture free and ash free condition.
Calculation:
Write the expression for the high heat value in moisture free and ash free condition.
Here, high heat value in moisture free and ash free condition is
Convert the mass of ash to pounds.
Substitute,
Conclusion:
The value of the high temperature of heat in moisture free and ash free condition is calculated using the concept of subtracting moisture free and ash heat from original energy.
Want to see more full solutions like this?
Chapter 7 Solutions
Solid Waste Engineering
- What are the total earned work hours at completion for the column forms?arrow_forward6000 units have been installed to date with 9,000 units to install. Labor costs are $23,300.00 to date. What is the unit cost for labor to date?arrow_forwardThe base rate for labor is $15/hr. The labor burden is 35% and 3% for small tools for the labor. There are 1000 units to install. Records indicate that trade workers can install 10 units per hour, per trade worker. The owners need 15% overhead and profit to pay bills, pay interest on loan and provide some profit to the partners. What is the minimum bid assuming no risk avoidance factor?arrow_forward
- 5. (20 Points) Consider a channel width change in the same 7-foot wide rectangular in Problem 4. The horizontal channel narrows as depicted below. The flow rate is 90 cfs, and the energy loss (headloss) through the transition is 0.05 feet. The water depth at the entrance to the transition is initially 4'. 1 b₁ TOTAL ENERGY LINE V² 129 У1 I b₂ TOP VIEW 2 PROFILE VIEW h₁ = 0.05 EGL Y₂ = ? a) b) c) 2 Determine the width, b₂ that will cause a choke at location 2. Determine the water depth at the downstream end of the channel transition (y₂) section if b₂ = 5 feet. Calculate the change in water level after the transition. Plot the specific energy diagram showing all key points. Provide printout in homework. d) What will occur if b₂ = = 1.5 ft.?arrow_forward4. (20 Points) A transition section has been proposed to raise the bed level a height Dz in a 7-foot wide rectangular channel. The design flow rate in the channel is 90 cfs, and the energy loss (headloss) through the transition is 0.05 feet. The water depth at the entrance to the transition section is initially 4 feet. b₁ = b = b2 1 TOTAL ENERGY LINE V² 129 Ут TOP VIEW 2 hloss = 0.05 " EGL Y₂ = ? PROFILE VIEW a) Determine the minimum bed level rise, Dz, which will choke the flow. b) If the step height, Dz = 1 ft, determine the water depth (y2) at the downstream end of the channel transition section. Calculate the amount the water level drops or rises over the step. c) Plot the specific energy diagram showing all key points. Provide printout in Bework. d) What will occur if Dz = 3.0 ft.?. Crest Front Viewarrow_forward1. (20 Points) Determine the critical depth in the trapezoidal drainage ditch shown below. The slope of the ditch is 0.0016, the side slopes are 1V:2.5H, the bottom width is b = 14', and the design discharge is 500 cfs. At this discharge the depth is y = 4.25'. Also, determine the flow regime and calculate the Froude number. Ye= ? Z barrow_forward
- 3. (20 Points) A broad crested weir, 10 feet high, will be constructed in a rectangular channel B feet wide. The weir crest extends a length of B = 120 feet between the banks with 2 - 4 foot wide, round nosed piers in the channel. The width of the weir crest is 8 feet. If H = 6', determine the design discharge for the weir.arrow_forwardParking Needs vs. Alternative Transportation Methods for presentation slides include images and graphsarrow_forwardPlease explain step by step and show formulararrow_forward
- Solid Waste EngineeringCivil EngineeringISBN:9781305635203Author:Worrell, William A.Publisher:Cengage Learning,Traffic and Highway EngineeringCivil EngineeringISBN:9781305156241Author:Garber, Nicholas J.Publisher:Cengage LearningMaterials Science And Engineering PropertiesCivil EngineeringISBN:9781111988609Author:Charles GilmorePublisher:Cengage Learning
- Principles of Geotechnical Engineering (MindTap C...Civil EngineeringISBN:9781305970939Author:Braja M. Das, Khaled SobhanPublisher:Cengage LearningFundamentals of Geotechnical Engineering (MindTap...Civil EngineeringISBN:9781305635180Author:Braja M. Das, Nagaratnam SivakuganPublisher:Cengage Learning





