A single stage double acting air compressor delivers 15 m3/min. measured at 1.013 bar and temperature 270C and delivers at 7 bar. The conditions at the end of the suction stroke are pressure 0.98 bar and temperature 400C. The clearance volume is 4% of the swept volume and the stroke / bore ratio is 1.3/1, compressor runs at 992 rpm. Calculate the volumetric efficiency, cylinder dimensions, indicated power and isothermal efficiency of this compressor. Take the index of compression and expansion as 1.3, R= 0.587kJ/Kg-K.

b) Compare the payback period of PV and wind turbines.
c) Compare the Benefit/Cost ratio of PV and wind turbines.
d) Select one option (PV or turbine) for your site. Include an explanation of why you select that option.

Determine the correlation function of the square wave.

b) Determine the cross relationship functions of the triangular wave and the square wave.

c) Explain the random variable, statistical mean, time average, variance and moment concepts.

Methane gas enters a horizontal pipe with a thin wall of 25 cm diameter at a temperature of 309 C with 4.5 tons of mass flow per hour and exits at 289 C. The pipe is smooth and its length is 10 m and the ambient and environmental temperature is 25 C. Since the smear coefficient of the pipe surface is given as 0.8;

 a-) Indoor and outdoor convection coefficients (W / m2K),

b-) Heat loss from the pipe to the environment (W),

c-) The surface temperature of the pipe (C),

d-) Calculate the required fan control (W) and interpret the results.

Write a report on AI based Social distancing monitoring using drone with out human interaction report should contain drone design it specification it's algorithm control system algorithm.minimum 10 A4 size page.No plagiarism is allowed other wise down rate is given

A 2-m³ rigid insulated tank initially containing saturated water vapor at 1 MPa is connected through a valve to a supply line that carries steam at 400°C. Now the valve is opened, and steam is allowed to flow slowly into the tank until the pressure in the tank rises to 2 MPa. At this instant the tank temperature is measured to be 300°C. Determine the mass of the steam that has entered and the pressure of the steam in the supply line. The initial and final properties of steam in the tank are v₁ = 0.19436 m³/kg, u₁ = 2582.8 kJ/kg, v₂ = 0.12551 m³/kg, and u₂ = 2773.2 kJ/kg. Solve using appropriate software.

The mass of the steam is kg.

The pressure of the steam is kPa.

6.Write a report on AI based Social distancing monitoring using drone with out human interaction report should contain drone design it specification it's algorithm control system algorithm.minimum 10 A4 size page.No plagiarism is allowed other wise down rate is given
Don't copy from old Chegg answers

A hot plate with a temperature of 60 ° C will be cooled by adding 50 triangular profile needle blades k = 209 W / mK with a length of 59 mm and 10 mm. The ambient temperature is 20 C and the heat transfer coefficient on the surface is 20 W / m2K according to the situation;

a-) Wing efficiency,

b-) Total heat transfer rate (W) from the wings,

c-) Calculate the effectiveness of a wing.

How can I explain these question? If need more info. You can ask. Thank you :)

1. Briefly state difference between torsion of circular sections and torsion of rectangular sections
2. Compare maximum stress of a square profile with that of a circular inscribed profile (state assumptions)

Chapter 3, problem 7

Discuss three modes of chip formation when machining unidirectional FRPs.
Discuss the influence of fiber orientation and rake angle on each mode.

QUESTIONS:

Net present value (NPV) of the wind farm project
In order to make this calculation, we need to convert some of the information we have
into annual figures:
1. What are the O&M costs in euro for each year (€/year)?
2. What is annual revenue from selling the electricity (€/year)?
3. What is the annual net income (€/year)?
4. What is the net present value of this wind farm project(€)? Hint: when calculating
with NPV function don't forget to extract the decommissioning cost from the last
years net income.

DATA:
The basic information about the wind farm:
Wind farm capacity (MW) 50
Capital investment (€) 65 000 000
Period of operation (years) 20
Decommissioning costs (€) 3 000 000
O&M costs (€/kWh) 0.0091
Annual energy production (kWh) 110 000 000
Electricity selling price, tariff (€/kWh) 0,075
Annual discount rate (%) 8

Can you please help me solve this engineering economics question, I am really confused.

Please be very specific when explaining your solution & show all formulas used.

Thank you,

J.

A heat exchanger with 1 body - 4 pipe passages and 109 pipes (2.6 cm diameter each, 4 m long thin wall per passage) at each passage will be used to heat the air. The water enters the pipes with a mass flow of 8 kg / h at 350 K temperature and the air enters the body with a mass flow of 18 kg / h at a temperature of 15 C. The pollution factor of the sediment formed inside the pipe over time is 0.0026 m2K / W. The transport coefficients on the inner and outer surfaces of the pipes are estimated at 450 and 200 W / m2K, respectively. Using specific temperatures at 25 C for air and water

a-) The effectiveness of the heat exchanger by drawing the shape of the problem,

b-) Heat transfer rate (kW),

c-) Calculate the outlet temperatures (C) of the water and air and show the temperatures in the T_L diagram.

5.Write a report on AI based Social distancing monitoring using drone with out human interaction report should contain drone design it specification it's algorithm control system algorithm.minimum 10 A4 size page.No plagiarism is allowed other wise down rate is given
Don't copy from old Chegg answers

Explain the Hume-Rothery Rule. Which parameters are more critical than others? What happens if two metals satisfy/don’t satisfy the rule?