Evaporation in a mist of little drops is sometimes used to cool hot, dry air. Let Consider the  Temperature in a spherical drop of liquid that is evaporating slowly enough that its temperature  profile is "quasi-steady."   In other words, the radius of the drop is changing so gradually that the temperature profile can be measured from the steady form of the thermal energy equation (Laplace's equation).  

a. Demonstrate that, under these pseudo-steady conditions, the temperature in the drop must be a constant.

b.  If the rate of evaporation per unit area of drop surface is q_m, the heat transfer coefficient among the drop and surrounding air is h, and the latent heat of vaporization is  λ, measure the temperature inside the drop relative to the ambient temperature  T∞.

c. Give a criterion for when you believe pseudo-steady conditions apply, with a brief clarification of your reasoning.

 

Posted Date: 3/19/2013 2:53:29 AM | Location : United States

Ask an Expert

Related Discussions:- Pseudo-steady conditions, Assignment Help, Ask Question on Pseudo-steady conditions, Get Answer, Expert's Help, Pseudo-steady conditions Discussions

Write discussion on Pseudo-steady conditions
Your posts are moderated

Write your message here..

Related Questions

Zoology, classification of animals classification of animals

Plants making food, What process do plants build up carbohydrates by? What process do plants build up carbohydrates by?

Treatment and disposal scope of first aid, Treatment: First aid treatment ... Treatment: First aid treatment is a set of actions taken to preserve life of the casualty, prevent the conditions from becoming worse and promote his/her recovery. Disposal:

People, where did people come from where did people come from

Intrusion into the carbon cycle, Intrusion into the Carbon Cycle   In  t... Intrusion into the Carbon Cycle   In  the carbon cycle, as long as the average amount of carbon dioxide hair and in water remains the same, a happy situation prevails. If the te

Reproduction, Explain how the uterus supports the development of a baby dur... Explain how the uterus supports the development of a baby during gestation.

Moisture comes from other plants, Moisture comes from other plants Secu... Moisture comes from other plants Secure a flower pot which has some bean or pea seedlings that are 10 or 15 cm in height. Cover the top of the pot with cellophane or sheet rubb

Food, how foods are digested? how foods are digested?

Illustrate the features of soil textural classes, Soil Textural Classes ... Soil Textural Classes On the basis of the proportion of different soil separates present, the soils are classified into different groups called as  soil classes. The soil class

Explain precipitation - antigen-antibody interaction, Explain Precipitation... Explain Precipitation - Antigen-Antibody Interaction If Ag-Ab are present in an appropriate ratio, they form a precipitate in blood. Turbidity is developed, this can be measure