* Properties of Saturated H₂O мра Vf 1 1.1 1.2 0.001127 (2) 0.001139 Va 0.1944 (?) 0.1633
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- Water is to be boiled at atmospheric pressure in a polished copper pan by means of an electric heater. The diameter of the pan is 0.48 m and is kept at 108 deg C. What is the power required to boil the water? Tsat 100°C; Properties of water at 100°C: Density. pl= 961 kg/m3; Kinematic viscosity, v 0.293x10-6 m2/s: Prandti Number. Pr 1.740; Specific heat, Cpl = 4216 J/kg.K; Dynamic viscosity, u = p x v = 961 x 0.293 x 10-6 = 281.57 x10-6 Ns/m2; hfg = 2256.9 k/kg; pv = 0.597 kg/m3; a = 0.0588 N/m; Csf=0.013; n=1:In a reservoir system with a very large accumulation volume for the ideal fluid (water), d) If the relative evaporation pressure of water is pv = -98.5 kPa, what can be z maximum? e) The relative evaporation pressure of the water is pv = -98.5 Pa and h = 6 m. Determine how much can be reduced without reason. f) Calculate the critical velocity value for cavitation.Answer the question considering the information given in the picture D) Sometimes when pipeline pressure calculations are made, the pressures in certain points can be negative, what is the meaning of a negative pressure? Justify.
- In a reservoir system with a very large accumulation volume for the ideal fluid (water),a) Since the diameter of the ABCDEF outlet pipe is D = 20 cm, the flow rate through the pipe,b) Calculate the velocity, velocity height, relative pressure and pressure heights in the ABCDEF outlet pipe.c) Draw the relative energy and piezometer lines of the system.d) If the relative evaporation pressure of water is pv = -98.5 kPa, what can be z maximum?e) Determine how much the diameter of the outlet pipe can be reduced at most without causing cavitation, with the relative evaporation pressure of water pv = -98.5 Pa and h = 6 m.f) Calculate the critical velocity value for cavitation.Water is to be boiled at atmospheric pressure in a polished copper pan by means of an electric heater. The diameter of the pan is 0.51 m and is kept at 111 deg C. What is the power required to boil the water? Tsat = 100°C; Properties of water at 100°C: Density, ρl= 961 kg/m3; Kinematic viscosity, ν = 0.293x10-6 m2/s; Prandtl Number, Pr = 1.740; Specific heat, Cpl = 4216 J/kg.K; Dynamic viscosity, μ = ρ × ν = 961 × 0.293 × 10-6 = 281.57 x10-6 Ns/m2; hfg = 2256.9 kJ/kg; ρv = 0.597 kg/m3; σ = 0.0588 N/m; Csf=0.013; n=1; Select one: a. 25964.0356 b. 52997.1101 c. 49373.4011 d. 38911.7986What should be the maximum radius of a pipe, to ensure that a liquid with a density of 5 g/cm^3 and a viscosity of 0.00522 kg/m*s, flowing horizontally at a velocity of 60 cm/s in laminar flow through the pipe at a temperature of 4°C?
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- A flow of water at 1 atm with a vapor pressure of 0.2 psi and a critical cavitation number of 0.3 (Ca critical = Patm-Pvap / 0.5pV2). At what rate does cavitation occur?Incident radiation at the Laguna Lake is 985 W/m2 at noon on February 14th. Water temperature is 27.5 °C. Air temperature is 28.0°C, relative humidity is 75%, and wind speed is 1.7 m/s at 2m. - Determine the open water evaporation rate in mm/d using the energy methodA fluid of water at 1 atm with a vapor pressure of 0.2 psi and a critical cavitation number of 0.3 (Cacritical=Patm-Pvap/0.5V2) How fast does cavitation occur?