CONNECT FOR THERMODYNAMICS: AN ENGINEERI
9th Edition
ISBN: 9781260048636
Author: CENGEL
Publisher: MCG
expand_more
expand_more
format_list_bulleted
Question
Chapter 17.7, Problem 3P
To determine
Justify whether the measurement of flowing air stagnation temperature through air-conditioning with a probe cause any significant error.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
0.2 A condenser condenses 2700kg steam per hour while air leaks into
It at 2.2kg/hr. The condensate and air suction spout temperatures
are 32.9°C. The barometer and vacuum gauge readings are
765mmHg and 690mmHg respectively. The condenser uses
125.55M9 of cooling water per hour to condense steam with a
dryness fraction of 0.86 and the air pump has a volumetric efficiency
of 82.5%. Take R = 0.287kJ/kgK for air and calculate:
%3D
6.2.1 the temperature rise of the cooling water (10.85°C);
6.2.2 the air pump capacity in m2/min (0.78m3³/min).
For air properties use online source: https://www.peacesoftware.de/einigewerte/luft_e.html
The compressor is operating at steady-state increasing pressure of R-22 refrigerant from 4 bars to 14 bars. Temperature was rising during the process from 12C to 90C. The inlet volumetric flow rate is 1 m3/min and inlet diameter is 0.03m. At the exit the diameter is the same. Heat flow to the surroundings can be neglected. Determine:
a.Mass flow rate [kg/s]
b. Inlet and outlet velocity [m/s]
c.Power required to run the compressor [kW]
For air properties use online source: https://www.peacesoftware.de/einigewerte/luft_e.html
The compressor is operating at steady-state increasing pressure of R-22 refrigerant from 4 bars to 14 bars. Temperature was rising during the process from 12C to 90C. The inlet volumetric flow rate is 1 m3/min and inlet diameter is 0.03m. At the exit the diameter is the same. Heat flow to the surroundings can be neglected. Determine:
a.Mass flow rate [kg/s]
SHOW AND EXPLAIN ALL STEPS PLEASE thanks
Chapter 17 Solutions
CONNECT FOR THERMODYNAMICS: AN ENGINEERI
Ch. 17.7 - A high-speed aircraft is cruising in still air....Ch. 17.7 - What is dynamic temperature?Ch. 17.7 - Prob. 3PCh. 17.7 - Prob. 4PCh. 17.7 - Prob. 5PCh. 17.7 - Prob. 6PCh. 17.7 - Calculate the stagnation temperature and pressure...Ch. 17.7 - Prob. 8PCh. 17.7 - Prob. 9PCh. 17.7 - Prob. 10P
Ch. 17.7 - Prob. 11PCh. 17.7 - Prob. 12PCh. 17.7 - Prob. 13PCh. 17.7 - Prob. 14PCh. 17.7 - Prob. 15PCh. 17.7 - Prob. 16PCh. 17.7 - Prob. 17PCh. 17.7 - Prob. 18PCh. 17.7 - Prob. 19PCh. 17.7 - Prob. 20PCh. 17.7 - Prob. 21PCh. 17.7 - Prob. 22PCh. 17.7 - Prob. 23PCh. 17.7 - Prob. 24PCh. 17.7 - Prob. 25PCh. 17.7 - Prob. 26PCh. 17.7 - The isentropic process for an ideal gas is...Ch. 17.7 - Is it possible to accelerate a gas to a supersonic...Ch. 17.7 - Prob. 29PCh. 17.7 - Prob. 30PCh. 17.7 - A gas initially at a supersonic velocity enters an...Ch. 17.7 - Prob. 32PCh. 17.7 - Prob. 33PCh. 17.7 - Prob. 34PCh. 17.7 - Prob. 35PCh. 17.7 - Prob. 36PCh. 17.7 - Prob. 37PCh. 17.7 - Air at 25 psia, 320F, and Mach number Ma = 0.7...Ch. 17.7 - Prob. 39PCh. 17.7 - Prob. 40PCh. 17.7 - Prob. 41PCh. 17.7 - Prob. 42PCh. 17.7 - Prob. 43PCh. 17.7 - Is it possible to accelerate a fluid to supersonic...Ch. 17.7 - Prob. 45PCh. 17.7 - Prob. 46PCh. 17.7 - Prob. 47PCh. 17.7 - Consider subsonic flow in a converging nozzle with...Ch. 17.7 - Consider a converging nozzle and a...Ch. 17.7 - Prob. 50PCh. 17.7 - Prob. 51PCh. 17.7 - Prob. 52PCh. 17.7 - Prob. 53PCh. 17.7 - Prob. 54PCh. 17.7 - Prob. 57PCh. 17.7 - Prob. 58PCh. 17.7 - Prob. 59PCh. 17.7 - Prob. 60PCh. 17.7 - Prob. 61PCh. 17.7 - Air enters a nozzle at 0.5 MPa, 420 K, and a...Ch. 17.7 - Prob. 63PCh. 17.7 - Are the isentropic relations of ideal gases...Ch. 17.7 - What do the states on the Fanno line and the...Ch. 17.7 - It is claimed that an oblique shock can be...Ch. 17.7 - Prob. 69PCh. 17.7 - Prob. 70PCh. 17.7 - For an oblique shock to occur, does the upstream...Ch. 17.7 - Prob. 72PCh. 17.7 - Prob. 73PCh. 17.7 - Prob. 74PCh. 17.7 - Prob. 75PCh. 17.7 - Prob. 76PCh. 17.7 - Prob. 77PCh. 17.7 - Prob. 78PCh. 17.7 - Prob. 79PCh. 17.7 - Air flowing steadily in a nozzle experiences a...Ch. 17.7 - Air enters a convergingdiverging nozzle of a...Ch. 17.7 - Prob. 84PCh. 17.7 - Prob. 85PCh. 17.7 - Consider the supersonic flow of air at upstream...Ch. 17.7 - Prob. 87PCh. 17.7 - Prob. 88PCh. 17.7 - Air flowing at 40 kPa, 210 K, and a Mach number of...Ch. 17.7 - Prob. 90PCh. 17.7 - Prob. 91PCh. 17.7 - Prob. 92PCh. 17.7 - What is the characteristic aspect of Rayleigh...Ch. 17.7 - Prob. 94PCh. 17.7 - Prob. 95PCh. 17.7 - What is the effect of heat gain and heat loss on...Ch. 17.7 - Consider subsonic Rayleigh flow of air with a Mach...Ch. 17.7 - Prob. 98PCh. 17.7 - Prob. 99PCh. 17.7 - Air is heated as it flows subsonically through a...Ch. 17.7 - Prob. 101PCh. 17.7 - Prob. 102PCh. 17.7 - Prob. 103PCh. 17.7 - Air enters a rectangular duct at T1 = 300 K, P1 =...Ch. 17.7 - Prob. 106PCh. 17.7 - Prob. 107PCh. 17.7 - Air is heated as it flows through a 6 in 6 in...Ch. 17.7 - What is supersaturation? Under what conditions...Ch. 17.7 - Steam enters a converging nozzle at 5.0 MPa and...Ch. 17.7 - Steam enters a convergingdiverging nozzle at 1 MPa...Ch. 17.7 - Prob. 112PCh. 17.7 - Prob. 113RPCh. 17.7 - Prob. 114RPCh. 17.7 - Prob. 115RPCh. 17.7 - Prob. 116RPCh. 17.7 - Prob. 118RPCh. 17.7 - Prob. 119RPCh. 17.7 - Using Eqs. 174, 1713, and 1714, verify that for...Ch. 17.7 - Prob. 121RPCh. 17.7 - Prob. 122RPCh. 17.7 - Prob. 123RPCh. 17.7 - Prob. 124RPCh. 17.7 - Prob. 125RPCh. 17.7 - Prob. 126RPCh. 17.7 - Nitrogen enters a convergingdiverging nozzle at...Ch. 17.7 - An aircraft flies with a Mach number Ma1 = 0.9 at...Ch. 17.7 - Prob. 129RPCh. 17.7 - Helium expands in a nozzle from 220 psia, 740 R,...Ch. 17.7 - Helium expands in a nozzle from 0.8 MPa, 500 K,...Ch. 17.7 - Air is heated as it flows subsonically through a...Ch. 17.7 - Air is heated as it flows subsonically through a...Ch. 17.7 - Prob. 134RPCh. 17.7 - Prob. 135RPCh. 17.7 - Air is cooled as it flows through a 30-cm-diameter...Ch. 17.7 - Saturated steam enters a convergingdiverging...Ch. 17.7 - Prob. 138RPCh. 17.7 - Prob. 145FEPCh. 17.7 - Prob. 146FEPCh. 17.7 - Prob. 147FEPCh. 17.7 - Prob. 148FEPCh. 17.7 - Prob. 149FEPCh. 17.7 - Prob. 150FEPCh. 17.7 - Prob. 151FEPCh. 17.7 - Prob. 152FEPCh. 17.7 - Consider gas flow through a convergingdiverging...Ch. 17.7 - Combustion gases with k = 1.33 enter a converging...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- For air properties use online source: https://www.peacesoftware.de/einigewerte/luft_e.html The compressor is operating at steady-state increasing pressure of R-22 refrigerant from 4 bars to 14 bars. Temperature was rising during the process from 12C to 90C. The inlet volumetric flow rate is 1 m3/min and inlet diameter is 0.03m. At the exit the diameter is the same. Heat flow to the surroundings can be neglected. Determine: a.Mass flow rate [kg/s] SHOW AND EXPLAIN ALL STEPS PLEASEarrow_forwardA gas of 0.7 specific gravity is flowing in a linear reser- voir system at 150°F. The upstream and downstream pressures are 2000 and 1800 psi, respectively. The system has the following properties: L 2000 ft, k = 40 md, Calculate the gas flow rate. W=300 ft, h = 15 ft = 15%arrow_forwardA constant-area duct that is 20 cm in length by 2 cm in diameter is connected to a reservoir through a converging nozzle, as shown in Figure 9.13. For a reservoir pressure and tem- perature of 1 MPa and 500 K. determine the maximum air flow rate in kilograms per sec- ond through the system and the range of back pressures over which this flow is realized. Repeat these calculations for a converging nozzle with no duct. Assume that fis equal to 0.032 and that y- 1.4. f= 0.032 D- 2 cm Isentropic flow P1,000 kPa T 500 K 20 cmarrow_forward
- A high pressure axial flow compressor is driven by the jet engine at a speed of 1200rpm.An overall stagnation pressure ratio of 10 is recorded due to the compression of air. The stagnation temperature of air at inlet of the compressor is 325K.Polytropic efficiency of compressor is given as 90% mean radius of the compressor is assumed to be constant and equal to 0.3 m. Determine the total isentropic effeciency and estimate the minimum number of stages required if the stage loading to be less than 0.3arrow_forwardA R-12 compressor operates betwwen eveoperating temperature of 4 c ( hg = 353 kj/kg ), vg = 0.04895) and condensing temperature of 43 c ( hf = 241.6 kj/kg ).determine the bore diameter of the 4 cylinder 1000 rpm compressor if the piston speed is 200 meter/min and actual volumeter efficiency is 82% and refrigeration load is 25 tonsarrow_forwardCalculate the inlet pressure required to maintain a flow rate of 8.70 cm3 s −1 of nitrogen at 300 K flowing through a pipe of length 10.5 m and diameter 15 mm. The pressure of gas as it leaves the tube is 1.00 bar. The volume of the gas is measured at that pressure.arrow_forward
- What happens to steam pressure and velocity in a diverging nozzle?arrow_forwardIs the Fanning friction factor is a function of the pipe’s roughness in the turbulent flow regime.arrow_forwardThe air has a dry ball temperature of 40 ℃ and a wet bulb temperature of 26 ℃ initially heated in the heater so that the dry ball temperature increases to 90 ℃. then the air is passed through the pile of corn kernels to dry. Then this air is passed to the dehumidifier to reduce the RH to 10 ℃. Draw the course of the air change process on a psychometric diagram. The airflow rate through the corn kernels pile and dehumidifier was 6.0 m / s and the pile cross-sectional diameter was 0.5 m a. Determine the amount of water lost from the pile of corn kernels (in grams of water / second) = b. Determine the amount of water lost from the air when passing through the dehumidifier (in grams of water / second) =arrow_forward
- 1. Derive the volumetric efficiency of ideal reciprocating compressor2. Critically discuss the parameters that would affect the volumetric efficiency of a reciprocating compressorarrow_forwardIn a reaction turbine, the drum diameter is 2.15 m, speed of turbine is 750 rev/min and the steam flow is 14.2 kg/sec. At a particular ring of blades, the blade height is 15.875 cm and the discharge angle (α & ϕ) is 25°. Here, the pressure of steam is 0.04 N/mm2 abs, and its dryness fraction is 0.97. Determine the following: 1.Heat drop, in kJ, through this turbine pair, assuming turbine efficiency of 80% a. 141.6 b. 77.14 c. 12.47 d. 22.89 e. 42.02arrow_forwardThe volume flow rate of liquid refrigerant-134a at 10°F (? = 83.31 lbm/ft3) is to be measured with a horizontal Venturi meter with a diameter of 6 in at the inlet and 2 in at the throat. If a differential pressure meter indicates a pressure drop of 7.5 psi, determine the flow rate of the refrigerant. Take the discharge coefficient of the Venturi meter to be 0.98.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Principles of Heat Transfer (Activate Learning wi...Mechanical EngineeringISBN:9781305387102Author:Kreith, Frank; Manglik, Raj M.Publisher:Cengage Learning
Principles of Heat Transfer (Activate Learning wi...
Mechanical Engineering
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Cengage Learning
The Refrigeration Cycle Explained - The Four Major Components; Author: HVAC Know It All;https://www.youtube.com/watch?v=zfciSvOZDUY;License: Standard YouTube License, CC-BY