Combined heat and power (CHP) is a technology that simultaneously produces electricity and heat from a
single fuel source. Here we consider a CHP system that consumes 72 GJ of coal per hour, while producing
6000kWh electricity and 32.4 GJ of heat. Assume that coal has a heating value of 25 MJ=kg.
(a) Using energy-based allocation, determine the carbon dioxide emission per kWh for this CHP system.
(b) How does it compare with a coal-fired power plant that produces electricity only? For the coal-fired
power plant, it is assumed the thermal efficiency is 35 %. Assume complete combustion and the coal
used has a CO2 emission factor of 2.5 kg=kg.
(c) It is assumed that the heat generated by the CHP system replaces heat from a coal-fired boiler with 90%
efficiency. If this is so, what is the carbon dioxide emission per kWh based on substitution?
In: Civil Engineering
There are different types of software’s that utilize geographic
data for
display of spatial information in civil Engineering. These range
from
simple computer mapping to geographical information science.
a) Describe key functions or aspect of Arch GIS and Q-GIS
b) Examine five (5) main applications of GIS & Q-GIS in
processing
geographical and geospatial data
(c). Digitizing is the process where features on a map or image
are
converted into digital format for use by a GIS. Examine in details
the
three primary methods for digitizing spatial information
In: Civil Engineering
In: Civil Engineering
Consider an experiment with an objective of determining the effects of surface-finish finish & time of curing on the strength of a glue bond of two wood pieces. The experiment will be conducted using a tensile test machine. You are to design this experiment beginning with the need statement and completing the function structure.
In: Civil Engineering
33. What is sorption and describe three types of isotherm
In: Civil Engineering
Detailing is very important not only for the proper execution of the structures but for the safety of the structures. Generally produce a factor on the dos and don’ts considered when arranging the detail of reinforcement
In: Civil Engineering
Explain unified classification of coarse-grained soil?
In: Civil Engineering
4. In the study of consumer behavior, it was historically assumed that the shopper was a “sovereign consumer” and that decisions, needs, and desires were generated within the individual. Using any of the relevant course materials (readings, films, examples), discuss whether or not consumer’s choices are their own?
In: Civil Engineering
Prepare the plan of your house single storey, find out the
quantity of Brick work, plaster work, excavation, RCC work and
steel, also prepare
, material statement and Cost of materials ,
Explain the solution method by using the,appropriate equations and
then display a table of results
.assume suitable rates and data where necessary
In: Civil Engineering
A round column is to be designed with DL = 600 KN, LL = 800 KN, fc’ = 20.7 MPa, fy = 345 MPa. Use ?? = 0.02, 25 ?? ∅ ???? ????, ??? 10 ?? ∅ ????.
In: Civil Engineering
Select lightest section, neglect bock shear. Given a WT6 with D = 80k, L = 120k,
length 20 feet, A992 steel. The end connection is a longitudinal weld to flange only
(weld on each longitudinal edge of flange) and it is 6 in. long.
In: Civil Engineering
what is Water safety Plan (WSP) and how to implement it?
In: Civil Engineering
How to draw influence line for hyperstatique ???
In: Civil Engineering
Project Scope Statement: The scope statement is the “top-level document for articulating the overall project goals, objectives, and mission-critical parameters, such as overall timing and resource constraints. It defines the project baseline for all other documentation and management actions.” (Thamhain, 2005, p. 148) The scope of a project defines what is included in and excluded from the project. Based on your project proposal and the information provided in the project charter, submit a list of what will be included in the scope of your project and what will be excluded. Include the following headings and include the necessary information under each heading based on your individual project. The Project Scope Statement should be no longer than a page or page and half (single spaced). • Project objective – 1-2 sentences o Example: To construct a high-quality custom insulated doghouse within 4 weeks at a cost not to exceed $5,000. • Deliverables: What are you going to accomplish. o Example: § A 5’ x 7’ finished doghouse with one doorway § White aluminum siding § Shingled Roof § One (1) Doorway • Milestones: Dates for specific high-level milestones for the project. o Example: § Permits approved – June 1, 2016 § Foundation poured – June 10, 2016 § Framed, siding and roof completed – June 25 § Final inspection – June 30 • Technical Requirements: o Examples: § Doghouse must meet local building codes. § Wall and ceiling insulation must meet ______. § Floor insulation must meet ______. • Limits and Exclusions o Examples: § The doghouse will be built to the specifications and designed provided by the customer. § Owner is responsible for landscaping. § Doghouse does not include windows or a door. § Site work will be limited to Monday through Friday, 8:00am5:00pm
In: Civil Engineering
The urban air above the city of Shanghai if the mixing height
above the city is 1210 m, the width of the box perpendicular to the
wind is 105 m, the average annual wind speed is 15,400 m/hr, and
the amount of sulfur dioxide discharged is 1375 × 106 lb/yr. Is
this a conservative or non-conservative system? State all
assumptions. Sketch a diagram to represent the system. Write the
complete mass balance for SO2. Estimate the SO2 concentration in
the air leaving the city in μg/m .
Hint: Determine the wind flow in m3/hr.
In: Civil Engineering