Questions
electronic psychrometric plotting program, let’s consider atmospheric conditions at sea level with a dry bulb temperature...

electronic psychrometric plotting program, let’s consider atmospheric conditions at sea level with a dry bulb temperature (Tdry bulb ) of 23˚C and a relative humidity (RH) of 30%. Plot this state point on the pyschrometric chart available in PsycPro software. Use PsycPro to determine the following: a. Wet bulb temperature (WBT) of the air b. Dew point temperature (DPT) of the air c. Humidity ratio (specific humidity) d. Enthalpy e. Specific volume of the air (i) Provide the values for the about parameters as found from the pshchrometric chart (ii) Provide a screenshots of your completed PsycPro chart with the following: a) values of above different parameters and b) with the above plotted state point (two screenshots) Instructions for using PsycPro can be found on the course Moodle. You can verify your answers using another online psychrometric program or a paper chart, if you wish.

In: Mechanical Engineering

What is meant by the mechanical and thermal efficiency of a car? Demonstrate if both of...

What is meant by the mechanical and thermal efficiency of a car? Demonstrate if both of these would be
100% in an ideal scenario?

In: Mechanical Engineering

4-) In the ideal Otto cycle, the highest temperature of the cycle is 950 ° C,...

4-) In the ideal Otto cycle, the highest temperature of the cycle is 950 ° C, the compression ratio is 9. The pressure of the air at the beginning of the compression process is 110 kPa and the temperature is 45 ° C.

Since the mass of the air in the cycle is 1 kg,

a) Draw the P-v diagram of the cycle.

b) Find the temperature and pressure values ​​at every point of the cycle.

c) Find the thermal efficiency of the cycle.

T = 273 + ° C Note: C, and C do not change at temperature (constant).

In: Mechanical Engineering

write a Fortran 77 language code for vapour absorption air source water heat pump producing 70k...

write a Fortran 77 language code for vapour absorption air source water heat pump producing 70k temperature

In: Mechanical Engineering

Cold water inside / outside diameter in the same axis two pipe heat exchanger used as...

Cold water inside / outside diameter in the same axis two pipe heat exchanger used as engine oil cooler
It enters the 25/30 mm steel pipe at a temperature of 15 degrees at a speed of 0.5 m / s, Take off at a temperature of 25 degrees.Hot oil, on the inside / outside diameter of 40/46 mm steel pipe, at a temperature of 60 degrees with a speed of 0.25 m / s.
enters.it is desired to cool the oil 5 degrees, according to this :
A)Find pipe length for parallel flow?
B)Find the pipe length for reverse flow. Examine the results
C) Calculate the pressure loss of the oil and the required pump power in reverse flow.

In: Mechanical Engineering

which sensor can find and fix the problem when the engine runs erratically and how do...

which sensor can find and fix the problem when the engine runs erratically and how do I know if it is good or not? Also, the components in the engine how do I change it?

In: Mechanical Engineering

Consider a system in any suitable reference plan for which the Generalized forces Qj transformed to...

Consider a system in any suitable reference plan for which the Generalized forces Qj transformed to Fr, rFθ and what will be the total Kinetic energy for that system.

In: Mechanical Engineering

What is the function of the diode on the compressor relay? how does the blower motor...

  1. What is the function of the diode on the compressor relay?
  2. how does the blower motor resister pack work?
  3. what is the photodiode used for?

In: Mechanical Engineering

Explain the concept of shape functions and compare and contrast the shape functions for the different...

Explain the concept of shape functions and compare and contrast the shape functions for the different element types introduced in this module. Use diagrams as necessary. Relate this to the capabilities and limitations of each element type. (Truss, beam, plane stress, shell and 3d solid elements)

In: Mechanical Engineering

Lets say that we are testing an engine that produces 17 kW of power. As this...

Lets say that we are testing an engine that produces 17 kW of power. As this engine is operating, it absorbs 95 kW of heat from the surrounding air at 17 C. The air is then exited from a combustor into a room at 20 C.

What is the reversible power?

Group of answer choices

-32.9 kW

32.9 kW

5.882 kW

-5.882 kW

In: Mechanical Engineering

Refrigerant 134a, initially (state 1) a saturated liquid at -80C, is contained in a piston-cylinder assembly....

Refrigerant 134a, initially (state 1) a saturated liquid at -80C, is contained in a piston-cylinder assembly. The water undergoes a process to the corresponding saturated vapor (state 2), during which the piston moves freely in the cylinder. The change of state is brought about by heating the water as it undergoes an internally reversible process at constant pressure and temperature. If the mass of the refrigerant is 0.1 kg, determine (a) heat transfer using first law of thermodynamics in kJ and (b) heat transfer using second law of thermodynamics in kJ.

In: Mechanical Engineering

Air passes through a jet engine nozzle operating at steady state. The flow at the nozzle...

Air passes through a jet engine nozzle operating at steady state. The flow at the nozzle inlet has a temperature of 900° F. The nozzle inlet has an area of 5 ft2. The flow at the nozzle outlet has a temperature of 875° F, a specific volume of 90 ft3/lb, and a velocity of 600 ft/s. The nozzle outlet has an area of 2 ft2. Model the air as an ideal gas with constant specific heats. Evaluate the specific heats at 900° F. Assume the nozzle is well insulated and neglect potential energy changes. Determine the velocity in ft/s and specific volume in ft3/lb of the flow at the inlet.

In: Mechanical Engineering

What are the Ethical and professional responsibilities of the pusher type system in the industry?

What are the Ethical and professional responsibilities of the pusher type system in the industry?

In: Mechanical Engineering

A gas turbine expands air adiabatically at 1000 kPa and 550 ⁰C to 120 kPa and...

A gas turbine expands air adiabatically at 1000 kPa and 550 ⁰C to 120 kPa and 130⁰C. Air enters the
turbine through a 0.25 m
2 opening with an aveage velocity of 45 m/s, and exhausts through a 1 m2
opening. Assume the air is ideal gas with constant specific heats. Take the constant pressure specific
heat and gas constant of air as Cp= 1.05 kJ/(kg K) and R=0.287 kJ/(kg K), respectively. Determine;
(a) the mass flow rate of air through turbine and
(b) the power produced by the turbine.

In: Mechanical Engineering

Discuss Professional Responsibility of engineers in a situation of ethical dilemma.

 1. Discuss Professional Responsibility of engineers in a situation of ethical dilemma. CLO1(2.5)

 2. How individualism effect the situation when whistle blowing is going on? CLO2 (2.5)

 3. Why safety is important in state of practicing whistle blowing? CLO3 (2.5)

 4. How much the impact of personality and cultural norms effect on engineer's responsibilities in society? CL04 (2.5)


 CLO 1: Discuss awareness of professional, social and ethical responsibility in engineering practice

 CLO 2: Distinguish between individual behavior and behavior in a group

 CLO 3: Choose different safety issues in engineering practice

 CLO 4: Explain the impact of personality and cultural norms on engineer's responsibilities in society


In: Mechanical Engineering