Homework Answers
Add Answer to:
For air as a calorically perfect gas, Cp = 1004.5 J/(kgK), R = 287 J/(kgK) and...
A cycle where the working fluid is air (R = 287 J/kgK, k = Cp/Cv =...
A cycle where the working fluid is air (R = 287 J/kgK, k = Cp/Cv = 1.4) consists of the following processes 12 adiabatic compression from 100 kPa and 15 Celcious to 2 MPa 23 constant pressure heat addition to 1200Celcioius 34 adiabatic expansion 41 constant volume heat rejection Draw the cycle on the P-v Diagram and calculate heat addition and heat rejection work consumed and work produced technical work consumed and technical work produced the...
Assume ideal gas, air gamma = 1.4, R = 287 J/kgK. ~ Use normal shock tables!...
Assume ideal gas, air gamma = 1.4, R = 287 J/kgK.
~ Use normal shock tables! ~
A pitot-static probe designed for subsonic flow shows the velocity calculated from the ratio of stagnation pressure to static pressure and a fixed stagnation temperature of 350 K. Determine the indicated velocity and the actual velocity when the pitot- static probe is erroneously used in supersonic flow, with a stagnation pressure to static pressure ratio of 1.5.
For a gas compressor compresses gas (Cv= 718 J/KgK and Cp= 1005 J/KgK) adiabatically from 1...
For a gas compressor compresses gas (Cv= 718 J/KgK and Cp= 1005 J/KgK) adiabatically from 1 bar and 15 ºC to 10 bar with an isentropic efficiency of 0.89. The gas flow rate is 5 kg/s. Calculate the temperature after compression and the power input
NAME (PRINT): 1. Air (ideal gas with k = 1.4 and Cp = 1.004) enters the...
NAME (PRINT): 1. Air (ideal gas with k = 1.4 and Cp = 1.004) enters the steady-state operating compressor at P1 = 100 kPa and T1 = 17C, compressed adiabatically, and exits at P2 = 330kPa and T2 = 147C. KE and PE can be neglected. Determine (solution process required): a) Isentropic efficiency of the compressor (6 pts) rate of entropy generation per kg of air flow (5 pts).
Q1. Pressure load in re-entry capsule nose A crew capsule has re-entered Earths atmosphere and slowed...
Q1. Pressure load in re-entry capsule nose A crew capsule has re-entered Earths atmosphere and slowed to a speed of V-1134 m/s at an altitude where the static temperature is T-200 K and the static pressure is p=1 kPa. A normal shock forms upstream of the nose of the capsule. What is the pressure of the flow where it stagnates against the nose of the capsule? Assume the air behaves as a calorically perfect gas with ratio of specific heats...
An ideal diatomic gas undergoes 3 processes in series: process 1-2: isothermal compression from pr-100kPa and...
An ideal diatomic gas undergoes 3 processes in series: process 1-2: isothermal compression from pr-100kPa and V-0.1m2 to V0.025m; process 2-3: at constant pressure and process 3-1: isentropic process closing cycle. Determine: a) ratio of the maximum and minimum temperature of the cycle, b) heats of the processes, c) thermal efficiency of the cycle, d) sketch the processes on p-V and T-s diagrams. Gas constant is 287 J/(kgK), isentropic exponent is 1.4.
Consider the flow through a rocket engine nozzle. In the combustion chamber, the gas which results...
Consider the flow through a rocket engine nozzle. In the combustion chamber, the gas which results from the combustion of the rocket fuel and oxidizer is at a pressure and temperature of 15 atm and 2500K, respectively; the molecular weight and specific heat at constant pressure of the combustion gas are 12 kg/kmol and 4157 J/kg · K, respectively. Assume that the gas flow through the nozzle is an isentropic expansion of calorically perfect gas, with a temperature of 1350K...
Air experiences a 50°C drop in temperature. Given that air has a gas constant of 287...
Air experiences a 50°C drop in temperature. Given that air has a gas constant of 287 J/kg·K and a specific heat ratio of 1.4, what is the total specific enthalpy change of the air?
ANSWER [0.54 and 1.63] (b) Air flows through a converging-diverging nozzle. At point "A" in the converging section, the cross-sectional area is 50 cm2 and the Mach number was measured to b...
ANSWER [0.54 and 1.63]
(b) Air flows through a converging-diverging nozzle. At point "A" in the converging section, the cross-sectional area is 50 cm2 and the Mach number was measured to be 0.4. At point "B" in the diverging section, the cross-sectional area is 40 cm2. Find the possible Mach numbers at point "B" Assume that the flow is isentropic and the air specific ratio γ-1.4 and the gas constant R: 287 J/kg K.
(b) Air flows through a converging-diverging...
Please help solve these questions. Thank you. Also, will the enthalpy increase be 92460 J/kg? 6...
Please help solve these questions. Thank
you.
Also, will the enthalpy increase be 92460 J/kg?
6 10) Some air increases temperature from 288 K to 380 K a t constant pressure. -7 What is the enthalpy increase of the air? -8 And what is the specific heat transfer ('heat done') on the air? Answer J/kg 50 11) What is the change in specific entropy of the air in Q10? Answer J/(kg K) 2 12) What is the isentropic stagnation pressure...
Assume ideal gas, air gamma = 1.4, R = 287 J/kgK.
~ Use normal shock tables! ~
A pitot-static probe designed for subsonic flow shows the velocity calculated from the ratio of stagnation pressure to static pressure and a fixed stagnation temperature of 350 K. Determine the indicated velocity and the actual velocity when the pitot- static probe is erroneously used in supersonic flow, with a stagnation pressure to static pressure ratio of 1.5.
NAME (PRINT): 1. Air (ideal gas with k = 1.4 and Cp = 1.004) enters the steady-state operating compressor at P1 = 100 kPa and T1 = 17C, compressed adiabatically, and exits at P2 = 330kPa and T2 = 147C. KE and PE can be neglected. Determine (solution process required): a) Isentropic efficiency of the compressor (6 pts) rate of entropy generation per kg of air flow (5 pts).
Q1. Pressure load in re-entry capsule nose A crew capsule has re-entered Earths atmosphere and slowed to a speed of V-1134 m/s at an altitude where the static temperature is T-200 K and the static pressure is p=1 kPa. A normal shock forms upstream of the nose of the capsule. What is the pressure of the flow where it stagnates against the nose of the capsule? Assume the air behaves as a calorically perfect gas with ratio of specific heats...
An ideal diatomic gas undergoes 3 processes in series: process 1-2: isothermal compression from pr-100kPa and V-0.1m2 to V0.025m; process 2-3: at constant pressure and process 3-1: isentropic process closing cycle. Determine: a) ratio of the maximum and minimum temperature of the cycle, b) heats of the processes, c) thermal efficiency of the cycle, d) sketch the processes on p-V and T-s diagrams. Gas constant is 287 J/(kgK), isentropic exponent is 1.4.
Consider the flow through a rocket engine nozzle. In the combustion chamber, the gas which results from the combustion of the rocket fuel and oxidizer is at a pressure and temperature of 15 atm and 2500K, respectively; the molecular weight and specific heat at constant pressure of the combustion gas are 12 kg/kmol and 4157 J/kg · K, respectively. Assume that the gas flow through the nozzle is an isentropic expansion of calorically perfect gas, with a temperature of 1350K...
ANSWER [0.54 and 1.63]
(b) Air flows through a converging-diverging nozzle. At point "A" in the converging section, the cross-sectional area is 50 cm2 and the Mach number was measured to be 0.4. At point "B" in the diverging section, the cross-sectional area is 40 cm2. Find the possible Mach numbers at point "B" Assume that the flow is isentropic and the air specific ratio γ-1.4 and the gas constant R: 287 J/kg K.
(b) Air flows through a converging-diverging...
Please help solve these questions. Thank
you.
Also, will the enthalpy increase be 92460 J/kg?
6 10) Some air increases temperature from 288 K to 380 K a t constant pressure. -7 What is the enthalpy increase of the air? -8 And what is the specific heat transfer ('heat done') on the air? Answer J/kg 50 11) What is the change in specific entropy of the air in Q10? Answer J/(kg K) 2 12) What is the isentropic stagnation pressure...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 11 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 11 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 11 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 11 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 11 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 11 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 11 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 11 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 11 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 11 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 11 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 11 months ago