What is the mass flow rate in hot stream kg/s?
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What is the mass flow rate in hot stream kg/s?
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- Atmospheric air at 40°C dbt and 55% RH is passed over a cooling coil at the rate of 600 m'/mint. At exit from coil the air is saturated and its temperature is 8°C. The condensate also leaves at 8°C. Determine the amount of condensate leaving coil per minute and refrigeration in kW, The specific heat of superheated steam may be assumed to be 1.88 kJ/kg-K. Solve the problem without psychromatic chart.Ammonia and air pass through the heat exchanger. While the ammonia is entering as a superheated vapor at 16 bar pressure and 60C temperature it is leaving as a saturated liquid at the same pressure but unknown temperature. The ammonia mass flow rate is 400 kg/hour. Air is flowing backward and is heated from 17C to 42C at the constant pressure of 2 bars. NOTE: Find air properties from https://www.peacesoftware.de/einigewerte/luft_e.html a.Draw the sketch of the heat exchanger showing all thermodynamic parameters (P, T, etc.) Please show all steps of solutionWater vapor enters a continuous flow adiabatic turbine with 3MPa press, 400 oC temperature and 90 m3 / min volumetric flow rate.Some of the steam comes out of the turbine at 0.5 MPa pressure and 200 oC temperature.The remaining part leaves the system at 5 kPa pressure and 90% dryness.Since the total power generated in the turbine is 5 MW, neglect the kinetic and potential energies and calculate the mass flow rate at the outlet no. 2.
- In a shower mixer, cold water at 27 deg C, flowing at 5 kg/min is mixed with hot water at 77 deg flowing at 15 kg/min. The exit temperature of the mixture isLiquid water at 19.1 psig and 15°C is heated in a mixing chamber by mixing it with superheated steam at 150°C. Liquid water enters the mixing chamber at a rate of 4.3 kg/s and the chamber is estimated to lose heat to the surrounding air at 20°C at a rate of 1200 kJ/min. If the mixture is intended to leave at 80°C please answer the following. a. What should be the pressure at the inlet of the liquid water and the steam to have a good operating mixing chamber? Explain how you arrived to the value and what would happen if values for the inlet streams would be different. b. What should the pressure at the exit of the mixture be under ideal conditions? Why? c. Determine the mass flow rate of the superheated steam. d. Determine the rate of entropy generation in this mixing chamber. Could this mixing chamber operate under the given conditions? Please justify your answer with explanations. e. If the mixing chamber would have been adiabatic, is there any entropy generation? Perform a…300 kg/min of water is required to be cooled from 50°C to 25°C in a wet cooling tower. For these purposes, 730 m3/min of atmospheric air is circulated through it at countercurrent. If the atmosphere is at a pressure of 94 kPa and the dry bulb and humid are 25°C and 15°C, respectively, and in the mixing process 3.7% of water is lost per evaporation, determine*:a) Relative and absolute humidity and dew temperature of the atmosphere.b) Absolute humidity and temperature of the air at the outlet.
- Ammonia and air pass through the heat exchanger. While the ammonia is entering as asuperheated vapor at 16 bar pressure and 60C temperature it is leaving as a saturated liquid at thesame pressure but unknown temperature. The ammonia mass flow rate is 400 kg/hour.Air is flowing backward and is heated from 17C to 42C at the constant pressure of 2 bars.NOTE: Find air properties from https://www.peacesoftware.de/einigewerte/luft_e.html a. Draw the ammonia T-v diagram showing the stages, pressures, and temperatures b. How much heat is transferred from ammonia to air assuming no heat transfer to thesurroundings? c.Determine air mass flow rate Please show all steps in solution thanksA mixture of refrigerant-134a at 120 kPa enters an evaporator with quality 0.12 and leaves it as fully vaporized (quality equal to 1). The latent heat is provided by 16.4 kg/s of air entering in the device at 23 ºC and exiting at 7 °C. Assume constant specific heat of the air cp=1.005 kJ/(kg K). Calculate the mass flow rate of the refrigerant in kg/s to 2 decimal places.There are 2 streams of oxygen is mix in a control volume. The first stream is flowing at 0.125 kg/s at 450 K and the second is flowing at 0.15 kg/s at 700 K. The product stream is leaving at 0.100 kg/s at 800 K. All processes are at atmospheric pressure. Determine the rate of entropy generation for the process assumingthat methane is an ideal gas with Cp = (7/ 2)R and the surrounding temperatureis 750 K.
- 300 kPa pressure and 20 oC water flowing with a mass flow rate of 2 kg / s,300 kPa pressure and 300 oC mixed with superheated steam during mixing. if it comes out at 65 oC temperature from the mixing chamber;a. Draw the system schematically and examine it.b. Determine the initial mass flow rate of the superheated steam.Hot water at 400kPa, 150 deg Celsius is fed to a throttle at a rate of 1.5kg/s and exits at 200kPa. After leaving the throttle, the resulting mixture enters a chamber where the vapor leaves from the top at 200kPa and the liquid leaves from the bottom at 200kPa. What is the mass flow rate of each of the two exit flows?Steam at a rate of 200 kg/min enters a turbine at 350°C and 40 bar through a 7.5-cm internal diameter pipe. The turbine operation is adiabatic, and the effluent leaves as saturated water at 5 bar through a 5-cm diameter pipe. 1. Calculate the work produced by the turbine in kW. 2. What is the enthalpyand phase of the effluent stream? 21 If it leaves the turbine at 75C and 5 bar 22 If it leaves the turbine at 30C and 5 bar 7.5