Refrigerant-134a is throttled from the saturated liquid state at 850 kPa to a pressure of 200 kPa. Determine the temperature drop during this process and the final specific volume of the refrigerant. P₁ = 850 kPa Sat. liquid 규 R-134a P₂ = 200 kPa
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- A 10-kg mass of superheated refrigerant-134a at 1.2 MPa and 70°C is cooled at constant pressure until it exists as a compressed liquid at 20°C. (a) Show the process on a T-v diagram with respect to saturation lines. (b) Determine the change in volume. (c) Find the change in total internal energy.pls reply asap A closed vessel 5m high contains 2.9m of oil (SG=0.762). A 90mm diameter orifice is situated 0.3m abovi bottom. What pressure must be maintained in the air space in order to discharge 15 hp.A liquid of specific gravity of 1.75 flows in a 6 cm horizontal pipe. The total energy at certain point in the flow is 80 J/N (joules/newton). The elevation of the pipe above the fixed datum is 2.6 m. If the pressure is 75 kPa. Determine the velocity of flow in m/s. A.23.86 b.32.45 c.37.85 d.42.25l
- The following information is given for n-pentane at 1 atm:boiling point = 36.20°C ΔHvap (36.20°C) = 357.6 J/g melting point = − 129.7°C ΔHfus (−129.7°C) = 116.7 J/g specific heat gas = 1.650 J/g ⋅ °C specific heat liquid = 2.280 J/g ⋅ °C A 26.10-g sample of liquid n-pentane is initially at −51.40°C. If the sample is heated at constant pressure (P = 1 atm), how many kJ of energy are needed to raise the temperature of the sample to 65.30°C?Milk with density of 1020kg/m31020kg/m3 is transported on a level road in a 7m7m long, 3m3m diameter cylindrical tanker. The tanker is completely filled with milk (no air space), and it accelerates at 2.5m/s22.5m/s2. If the minimum pressure in the tank is 100kPa100kPa, determine the maximum pressure difference and the location of the maximum pressure.An open cylindrical tank contains 1.2 m of salt water (sp.gr = 1.03), 0.9 m of gasoline (sp.gr = 0.70) and 1.2 m ofoil (sp.g r= 0.85).1. What is the pressure 1.5 m below the liquid surface?
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- A storage tank of a treatment water has a holding capacity of 750 m' up to an overflow point. The treatment water having silica content of 0.003 mg /L is flowing in to a tank at a rate of 30 L/sec. the out flow from the tank to the high pressure boilers is 30 L/sec. With time the quality of treatment water increased to 0.025 mg/L. Assuming that the inflow in to and out flow from the tank remains constant at 30 L/sec, calculate the time required for the silica content in the storage tank to increase to 0.01 mg/L.Water is pumped up from a reservoir to a smaller holding tank. If the flow rate through the pipe is 50 LPM, find the NPSH available immediately before the pump. The length of the pipe from the reservoir to the pump is 13.1 meters, and its diameter is 2.8 cm. The distance is h2=6.8 m. Assume a friction factor of 0.021. The vapor pressure of water at the current temperature is 2,399 Pa. Current atmospheric pressure is 95,194 Pa. The density of water is 991 kg/m^3How much energy can be stored in a tank of water -- 1 m3 -- for a compression corresponding to 1+ S % volume change. Bulk Module of water is 2178 MPa. (S=4 )