1. Show the computation using P water ( HP)2. Show the computation for Density of Air and Specific weight Air hsPa = pwhwairwater(0.0254)(1000)1.18hs =hs = 21.52 mVs =1.42(π/4)(0.3)²Vs = 20.09 m/s1.42Vd =(π/4)(0.275)²Vd = 23.9 m/shy =hy = 8.54 m(23.9)² - (20.09)²2(9.81)h = hs + hvh 21.52 + 8.54h = 30.06 mT =ns =W_QhaBP0.70 =BP = 0.7058 kwns =(1.18x0.00981)(1.42)(30.06)BPw₂QhBP(1.18x0.00981)(1.42)(21.52)0.70581s = 50.113% A fan draws 1.42 m³ per second of air at a static pressure of 2.54 cm of waterthrough a duct 300 mm diameter and discharges it through a duct of 275 mmdiameter. Determine the static fan efficiency if total fan mechanical is 70% and air ismeasured at 25°C and 760 mm Hg.A. 50.11%B. 54.34%SOLUTION:Wa =hsRTWa =Wa = 1.18 kg/m³=101.3250.287(25+273)h WWWaWC. 65.67%D. 45.34%Motor1Us760 mm Hg25 deg. Chw= 2.54 cmVd> Q = 1.42 cu.m/s2275 mmm dia.300 mm dia.

Answered: Image /qna-images/answer/3cd33cb3-e178-453c-9494-b9afa871b396.jpg

Answered: 1. Show the computation using P water (…

Engineering

Mechanical Engineering

1. Show the computation using P water ( HP) 2. Show the computation for Density of Air and Specific weight Air

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter7: Forced Convection Inside Tubes And Ducts

Section: Chapter Questions

Problem 7.33P

See similar textbooks

Similar questions

For an exhaust valve, the mass flow rate through the valve is 1.26 kg/s. The flow coefficient is 0.65 and the cylinder pressure and temperature are 625 kPa and 820 K. Assume exhaust system pressure is 103 kPa, the specific heat ratio is 1.4 and R =287J/ kg.K. The effective area of the valve is (SI unit): Select one: O a. 3.45*10-2 O b. 0.85*10-2 O c. 2.2*10-3 O d. 1.85*10-3 O e. 1.42*10-3
For an inlet valve, the mass flow rate through the valve is 0.44 kg/s. The flow coefficient is 0.62 and the cylinder pressure is 105 kPa. Assume intake system pressure and temperature are 180 kPa and 527 K, the specific heat ratio is 1.3 and R =287 J / kg.K. The area of the valve is (SI unit): Select one: a. 2.30*10-3 O b. 3.45*10-2 O c. 1.43*10-3 O d. 1.75*10-3 O e. 0.85*10-2
Werm Water flows through an adiabatic pumping system at a steady low rato (m) of 3 ke/u The conditions at the iniet are pi00 kPa, T=15 "C, and 0 m, and the conditions at the wxt are 500 kPa. T 18 "C, and ay= 200 um v Correct Waler Part 8 200 m Use the SL model to evaluate the punping power (W) Neglect any change in kinetic energy Express your answer in kilowatts to four significant figures. V AE ? vec Wat kW Submit ReduestAnswer - Part C What-if Scenario What would the pumping power be if the exit temperature were 19"C? Express your answer in kilowatts to four significant figures. AE 1 vec ?. Wout= kW Submit Beauest Answer
ANSWER ASAP PLS
ll MIN 4:35 PM 78% Water stands at a constant elevation of 100 m in a tank feeding water at a constant rate of o m's in a horizontal pire laid as follows (tig. 2) A sharp entry trom the tank into the pipe at A Flow in a pipe AB, 50 m long, 20 cm diameter, I- 0,00s Sudden entargement at B Flow in pire BC, 200 m long, 40 em diameter, f'- 0,01 Sudden contraction at C, Cc -0.625 Flow in pipe CD, 30 m long, 15 cm diameter, - 0.005 A sharp exit at D into the loner tank ri) (iv) (V) (Vii) Assume h, Determine. (at) All the losses (h) The elevaution of the wtier level in the lower tank (c) Sketch the Energy grade line (EGL.) and the lydraulic grade line ( HGL) ELiz 100 m
P:21)
From THERMOFLUIDS, M. MASSOUD Please hep me solve this problem i will really appreciate it
7
The initial condition of air in an air compressor is 100 Kpa and 25 degrees Celcius and discharges air at 725 Kpa. The bore and stroke are 276 mm and 186 mm respectively with 3 % clearance runningat 6 rev/sec.1.1 Illustrate the PV diagram 1.2 Discuss the processes in PV diagram 1.3 Solve the volumetric effieciency
Water at room temperature with a mass flow rate of 2 kg / s flows through a system of 2 pipes connected in series. The first piece of pipe is 10 m long 1 in. Sch. 40, the second piece of pipe is 15 m long 2 in. Sch 40 is made of commercial steel tubing. Piping system is horizontal. Calculate the pressure loss across both pipes and the pump power required to flow water through this piping system, ignoring the energy loss of the fitting. CREATE THE KNOWN AND UNKNOWN BY DRAWING THE SHAPE OF THE ORGANIZATION AND WRITE YOUR ASSUMPTIONS IN DETAIL
Water is to be pumped to an atmospheric rooftop storage tank atop a 5-story building, 75 feet above ground-level. A pump station is located at the ground-level. The suction line is a 2-inch ID commercial steel pipe tapped into a municipal supply line maintained at 50 PSIG 5 feet below ground-level. The discharge line is 1.5-inch ID commercial steel, and the total length of pipe is approximately 100 ft. There are two ball valves, a water meter, and gate valve on the discharge line. Determine the pump head required to deliver 40 GPM and the pump power that must be supplied to the water. If a pump is required, what is the motor power required if the pump operates at 55% efficiency?
hot tand col lectat 10m 1.50 075 cold 0.50 30 2 34 36 it do temp (deg C) In the above thermosyphon system, cold water at 30° enters the system and gets heated to 36° C by the flat plate collector. The length of the pipe ( ab = cd) is 2.5 m and has a diameter of 150 mm. i) ii) Calculate the friction head for this system Calculate the flow speed. The expansion coefficient of water B= 3.5 x 10* K". soler imadice, G