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On a clear night, when the effective blackbody temperature of the space is - 30°C, the air contains water vapor at a partial pressure equal to that of ice or liquid water at 0°C. A very thin film of water, initially at 20°C, is placed in a very shallow well-insulated pan, placed in a spot sheltered from the wind with a full view of the sky. If hc = 2.6 W/m². °C, state whether ice will form, supporting the conclusion with suitable calculations.

On a clear night, when the effective blackbody temperature of the space is - 30°C, the air contains water vapor at a partial pressure equal to that of ice or liquid water at 0°C. A very thin film of water, initially at 20°C, is placed in a very shallow well-insulated pan, placed in a spot sheltered from the wind with a full view of the sky. If hc = 2.6 W/m². °C, state whether ice will form, supporting the conclusion with suitable calculations.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Topic: Combined Convection and Radiation
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On a clear night, when the effective blackbody temperature of the space is - 30°C, the air contains water vapor at a partial pressure equal to that of ice or liquid water at 0°C. A very thin film of water, initially at 20°C, is placed in a very shallow well-insulated pan, placed in a spot sheltered from the wind with a full view of the sky. If hc = 2.6 W/m2. °C, state whether ice will form, supporting the conclusion with suitable calculations.
Transcribed Image Text:On a clear night, when the effective blackbody temperature of the space is - 30°C, the air contains water vapor at a partial pressure equal to that of ice or liquid water at 0°C. A very thin film of water, initially at 20°C, is placed in a very shallow well-insulated pan, placed in a spot sheltered from the wind with a full view of the sky. If hc = 2.6 W/m2. °C, state whether ice will form, supporting the conclusion with suitable calculations.
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