1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ELEN [110]
3 years ago
10

Item110pointseBook HintPrintReferences Check my work Check My Work button is now disabled5Item 1Item 1 10 pointsAn ideal Diesel

cycle has a compression ratio of 18 and a cutoff ratio of 1.5. Determine the maximum air temperature and the rate of heat addition to this cycle when it produces 150 hp of power, the cycle is repeated 1200 times per minute, and the state of the air at the beginning of the compression is 95 kPa and 17°C. Use constant specific heats at room temperature. The properties of air at room temperature are cp = 1.005 kJ/kg·K, cv = 0.718 kJ/kg·K, R = 0.287 kJ/kg·K, and k = 1.4.
Engineering
1 answer:
konstantin123 [22]3 years ago
5 0

Answer:

The answer is given below

Explanation:

Given that:

Compression ratio (r) = 18, cut off ratio (r_c) = 1.5, k = 1.4, W = 150 hp, initial temperature (Ti) = 17°C = 290 K

The rate of heat addition (Qin) is given by the equation:

Q_{in}=\frac{W*r^{k-1}*k(r_c-1)}{r^{k-1}*k(r_c-1)-(r_c^k-1)} \\\\substituting\ values\ into\ the \ equation\ gives:\\\\Q_{in}=\frac{150*18^{1.4-1}*1.4(1.5-1)}{18^{1.4-1}*1.4(1.5-1)-(1.5^{1.4}-1)}=\frac{333.6555}{2.2244-0.7641} =\frac{333.6555}{1.4603} =228.5\ hp

Therefore, The rate of heat addition is 228.5 hp

The maximum air temperature is determined using the Compression ratio, cut off ratio and the initial temperature. The maximum air temperature (T_{max}) is given by the formula:

T_{max}=T_{in}*r^{k-1}*r_c=290*18^{1.4-1}*1.5=1382.3\ K=1109.3^oC

The maximum air temperature is 1109.3°C

You might be interested in
Kinetic energy is defined as energy of an object in:
Murrr4er [49]

your answer is c. motion

5 0
3 years ago
Read 2 more answers
Which of the following does the electrical technician typically use?​
kkurt [141]

Answer:

What are the choices?

8 0
3 years ago
The vertical and horizontal poles at the traffic-light assembly are erected first. Determine the additional force and moment rea
konstantin123 [22]

Answer:

1. Az=258 lb

2. My=3440 ft lb

3. ∑Mz= 0

Explanation:

∑ Fx= Ax=0

∑ Fy= Ay=0

∑ Fz= Az-86-86-86

Az=258 lb

∑Mx=86 X 31 +Mx=0

Mx=2666 ft lb

∑My=86 X 40 +My=0

My=3440 ft lb

∑Mz= 0

6 0
3 years ago
Which of the following are hazards associated with portable ladders?
PilotLPTM [1.2K]

Answer:

A,C, and D

Explanation:

Potible ladders have to configure with many designs in mind but the most evedent is that they are usally unstable

BRAINLIEST PLS

7 0
3 years ago
Read 2 more answers
What is the mass of the same dragster body (volume of 150 cm3) if it is made of basswood instead?
dusya [7]

Answer:

the answer is 61.5

Explanation:

8 0
3 years ago
Other questions:
  • Determine the direct runoff and streamflow given the following unit hydrograph. The rainfall is collected at 4-hour intervals an
    14·1 answer
  • Consider a standard room thermostat. Determine the sensor, transducer, output, and control stages for this measurement system.
    13·1 answer
  • Q1. Basic calculation of the First law (2’) (a) Suppose that 150 kJ of work are used to compress a spring, and that 25 kJ of hea
    6·1 answer
  • A 250 kilo ohms and a 750 kilo ohms resistor are connected in series across a 75-volt source. Determine the error in measuring t
    10·1 answer
  • A landowner and a contractor entered into a written contract under which the contractor agreed to build a building and pave an a
    14·1 answer
  • The electrical panel schedules are located on EWR Plan number ___.
    13·1 answer
  • The most important rating for batteries is the what
    11·1 answer
  • What Is Photosynthesis ?​
    7·2 answers
  • Why is electricity considered a secondary source of energy
    6·1 answer
  • 1) Which step in the Design Process utilizes technical drawings to provide information necessary to
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!