exp (4.524 m²)(156.3 W/m².°C) (0.4651kg/s)(1006 J/kg. °C)
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(4.524 m²)(156.3 W/m².°C)
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- Q1) The heat capacity at constant volume of hydrogen sulfide at low pressures is given by Eq. Q1-1: Co[kJ/(mol•°C)] = 0.0252 + 1.547 × 10-T – 3.012 × 10-9T² Eq. Q1-1 ........ Where, Tis temperature in °C. A quantity of H2S is kept in a piston-fitted cylinder with initial temperature, pressure, and volume equal to 25°C, 2.0 atm, and 3.0 liters, respectively. i- Calculate the heat (kJ) required to raise the gas temperature from 25°C to 1000°C, if the heating takes place at constant volume (i.e., if the piston does not move). ii- For a closed system at constant pressure with negligible kinetic and potential energy changes, the specific heat is determined by Eq. Q1-2: Cp = Cy + 0 008314 Eq. Q1-2 calculate the heat (J) required to raise the gas from 25°C to 1000°C at constant pressure. What would the piston do during this process? Given the gas constant = 0 08206 atm. Lit/ (mol. K)0.5 kg of an ideal gas undergoes an isentropic process from 657 kPa gage and a volume of 0.017 cubic meter to a final volume of 0.1 cubic meter. If Cv = 0.384 kJ/kg-K and Cp = 0.52 kJ/kg-K, calculate: (ANSWER MUST BE EXACT TO CHOICES ONLY) a) the final temperature in deg. C CHOICE -171 102 171 b) the final pressure in kPa CHOICES 68.94 73.84 63.84 c) the change in enthalpy in kJ CHOICES -25 -23 23 d) the work nonflow in kJ CHOCIES 13.87 18.97 16.973. A 2-kg steam water mixture at 1.0 MPaa is contained in an inflexible tank. Heat is added until the pressure rises to 3.5 MPaa and the temperature to 400 °C. Determine: a) Heat transferred (kJ), b) AH (kJ), c)AS (kJ/k)
- II A volume of compressed air storage tank is 0.3m3, and the air pressure P1 in the tank is 1MP.. When a part of compressed air is used, the pressure P2 of the air in the tank decreases to 0.9 MPa. Set the room temperature at 20 ° C, calculate the mass of original air ml and the mass of residual air m2. Air gas constant Rg = 287.1 J/ (kg - K)).0.5 kg of an ideal gas undergoes an isentropic process from 657 kPa gage and a volume of 0.017 cubic meter to a final volume of 0.1 cubic meter. If Cv = 0.384 kJ/kg-K and Cp = 0.52 kJ/kg-K, calculate: a) the final temperature in deg. C -171 102 171 b) the final pressure in kPa 68.94 73.84 63.84 c) the change in enthalpy in kJ 23 -23 -25 d) the work nonflow in kJ 13.87 16.97 18.973:30 PM OA TOI d ME 3.6KB/s A docs.google.com/forms/d/e O Two blocks of masses 1 kg and 2 kg are pulled by two forces F1 = 1N and F2 = 4N over a frictionless table as shown in in the figure. What should be the minimum coefficient of friction between the blocks so that the blocks will move together? Assume g = 10m/s^2 1 kg 2 kg No trion 1/3 2/30 O 1/2 7/30 Next Clear form
- The spring-damper-mass system shown in Figure Q3(c) is at rest when strict by a hammer with an initial velocity of 0.4 m/s causing the mass to move upwards. Given that the mass m = 2 kg, spring constant k = 128 N/m and coefficient of 0.6 Ns/m. viscous damping c = (i) Determine the damped frequency of the spring-damper-mass system. Base on the given conditions derived in Q3(c)(i) and parameters given above, describe how you would derive the equation of motion of damped-free vibration. (ii)8. The speciflc volume of steam at atmospheric pressure and 212 deg. Fahrenheit Is 26.80 ft3/lb. Flnd Its density.For water at 4°C its density is equivalent to slugs/ft O 1.94 O 62.40 O 1000 9.81
- Fill in the blanks: Magnolia Dairy product must cool 4000 gallons of fresh milk from the farm from an initial temperature of 80°F to a temperature of 38°F in 5 hours. If the density of the milk is 8.6 lb/gal, sg 1.03 and Cp = 0.935 BTU/lb-R, how much brine must be circulated in gpm, if the change in temperature of brine is 15F°, sg = 1.182 and Cp = 0.729 BTU/lb-R? %3D gpmIn the air conditioning process in the humidifier, air at a dry bulb temperature of 30 degrees C and RH of 10% increases its RH to 50%. Determine the amount of moisture added in the humidifier per kg of dry air: ....W m-°C. 1.)A 2mx2m aluminum sheet (240 is 5mm thick and used to separate two types of gas (1.1) and (55) in an experimental chamber. The 1st type of gas is maintained at 20℃ while the 2nd gas is at -20C. Solve for the rate of heat transfer in kW.
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