A water droplet having a diameter of 0.10 mm is suspended in still air at 320K, 101 kPa, and 20% relative humidity. DAB = 0.220 cm2/s(a) Calculate the initial rate of evaporation of water(b) Determine the time for the water droplet to evaporate completely. 3. A water droplet having a diameter of 0.10 mm is suspended in still air at 320K, 101 kPa, and 20% relativehumidity. DAB= 0.220 cm2/s(a) Calculate the initial rate of evaporation of water(b) Determine the time for the water droplet to evaporate completely.

Name: A water droplet having a diameter of 0.10 mm is suspended in still air
Uploaded: 2024-03-20T06:56:55.000Z
Channel: Bartleby
Description: A water droplet having a diameter of 0.10 mm is suspended in still air at 320K, 101 kPa, and 20% relative humidity. DAB = 0.220 cm2/s(a) Calculate the initial rate of evaporation of water(b) Determine the time for the water droplet to evaporate compl

Given: Diameter of water droplet=0.10mm ⇒radius =D2=0.102=0.05mm…

Engineering

Mechanical Engineering

A water droplet having a diameter of 0.10 mm is suspended in still air at 320K, 101 kPa, and 20% relative humidity. DAB = 0.220 cm2/s (a) Calculate the initial rate of evaporation of water (b) Determine the time for the water droplet to evaporate completely.

A water droplet having a diameter of 0.10 mm is suspended in still air at 320K, 101 kPa, and 20% relative humidity. DAB = 0.220 cm2/s (a) Calculate the initial rate of evaporation of water (b) Determine the time for the water droplet to evaporate completely.

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter11: Calibrating Instruments

Section: Chapter Questions

Problem 4RQ: Temperature-measuring instruments may be designed to measure the temperature of vapors, ________,...

See similar textbooks

Similar questions

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 method
790kg/m' 49 CHAPTER 1 1-109E Consider a U-tube whose arms are open to the atımosphere. Now equal volumes of water and light oil (p = lbm/ft') are poured from different arms. A person blows from the oil side of the U-tube until the contact surface of the two fluids moves to the bottom of the U-tube, and thus the liquid levels in the two arms are the same. If the fluid height in each arm is in, determine the gage pressure the person exerts on the pil by blowing. 1-101 0-75M Air 0-15M Oil Water FIGURE P1-109E
For Cairo Egypt in January the average net radiation 40 W/m2, temperature is 14°C. relative humidity is 65%, and wind speed is 2.0 m/s measured @ a height of 2.0 m. Compute the evaporation rate by 1. Priestley-Taylor Method Zo=0.03
From an open water surface with air temperature 22°C, relative humidity is 40% and wind speed is 3 m/s, all measured at height 2 m above the water surface. Assume a roughness height of 0.03 cm. The net radiation is 200 W/m^2. Cp = 1005 J/kg-K A. Calculate the latent heat of vaporization (J/kg) B. Calculate the evaporation using Energy Balance Method (mm/day) C. Calculate the saturation deficit of the vapor pressure (Pa) D. Calculate the evaporation using Priestley-Taylor Method (mm/day)
When water boils in a pot with a loose lid, the increased pressure forces the lid upward, releasing steam and reducing the pres- sure in the pot so that the lid drops back down. If the water continues to boil, the lid can rattle upward and downward. Consider a 1 L pot half filled with boiling water. In this case there is half a liter, or 1 mol, of air and steam above the water. (a) Estimate the mass of the lid. (b) When the water is rapidly boiling, estimate the height to which the lid jumps during a steam-release event. (c) By multiplying the weight of the lid by the height of the jump, estimate the work done by the steam as the lid moves upward. (d) Treat the process as adiabatic and use the first law of thermodynamics to estimate the drop in the temperature of the steam as it pushes the lid upward.
A large cone-shaped container (height H and radius R) is fed a liquid solution of density ρ at aconstant flow rate q0 . The solution evaporates from its top surface exposed to the sun.(a) Assuming that the rate of evaporation is proportional to the area of the surface with aconstant K (kg/m 2 .s), develop a differential equation for the variation with time of the level ofthe liquid in the container.(b) What should be the feed flow rate to maintain the fluid level constant once it reaches adesired value h*?(c) If the feed was zero, would the rate of change of the level of the fluid depend on the shapeof the cone-shaped container (H,R dimensions)
uestion 5 a. Calculate the capillary effect in millimeters in a glass tube of 4mm diameter, when immersed in (i) water (ii) mercury the temperature of the liquid is 20o in contact with air are 0.073575 N/m and 0.51 N/m respectively. The angle of contact for water is zero and that for mercury is 130o. Take density of water at 20o as equal to 998 kg/m3. CYE GREEN PLAITAIN Answered
What is the phase and pressure of water at 280°C with specific volume 0.92 m3/kg? answer : superheated vapour, 0.2866 MPa Explain how it came
A certain gas was produced as a product of a decomposition reaction in a reactor vessel. The reaction generated a certain amount of force that allowed the gas to move at 35 m/s. The diatomic product gas (gamma = 1.36) will be transported adiabatically in a commercial steel pipe with a diameter of 1 inch. If the exit of the reactor and start of the pipe has a same pressure of 6 atm abs. and temperature of 120 degrees Celsius. The molecular weight of the gas is 70.91 kg/kgmol. 2. What is the Mach No. at the entry of the pipe? 0.36 0.41 0.14 none of the given 0.25 0.52 0.63
Assuming the ? = 998 kg/m3 determine the internal diameter of a tubular snow sample such that 0.1 N of snow in the sample represents 10 mm of water equivalent.
The title of the experiment is the latent heat of evaporation Assume that (10%) of the mass of the shifted vapor is water at a .temperature (T = 100 ° C) It is not steam. What is the percentage of error obtained in the ?experiment
Consider a tank with surface area A.(m2) It containsa fluid of M(kg) at an initial temperature of T0. (C) The specific heat of the fluid is Cp. (J/kg) The fluid inside the tank is heated with condensing vapour outside at temperature of Ts. find the equation that gives the change of the temperature of the fluid in the tank with time.T=f(t) neglect donduction heat transfer h=heat transfer film coef. homogenous T through the tank