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The radiant energy incident on the earth's surface on a

Elementary Principles of Chemical Processes | 3rd Edition | ISBN: 9780471687573 | Authors: Richard M Felder ISBN: 9780471687573 143

Solution for problem 8.20 Chapter 8

Elementary Principles of Chemical Processes | 3rd Edition

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Elementary Principles of Chemical Processes | 3rd Edition | ISBN: 9780471687573 | Authors: Richard M Felder

Elementary Principles of Chemical Processes | 3rd Edition

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Problem 8.20

The radiant energy incident on the earth's surface on a sunny day is roughly 900 W/m2 . Collecting and focusing sunlight and using the focused beam to heat a fluid is an old idea, and as the environmental costs of fossil fuel combustion mount, solar heating becomes an increasingly attractive alternative. Suppose a house is to be designed that will have a circulating forced air central heating unit, and solar energy is contemplated as a heat source (backed up with a conventional furnace to be used on cloudy days). If air is to be fed at a rate of 1000 m3/min at 30C and 1 atm, and the air is to be heated to 55C before being discharged into the living space, what is the required area of the solar collector plates? Assume 30% of the radiant energy incident on the plates is used to heat the air

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Chem 131 notes, week 3 Section 3.1 || Atomic mass - The mass of an atom depends on the numbers of protons, neutrons, and electrons it contains - Determining the mass of an atom is impossible, it must be obtained relative to another experimentally • The first step is to assign a value to the mass of one atom of a given element so that it can be used as a standard - Atomic mass: the mass of an atom in atomic mass units (amu) - One atomic mass unit: a mass exactly equal to one-twelfth the mass of one carbon-12 atom • Carbon-12 is the carbon isotope which contains 6 protons and 6 neutrons • The atomic mass of a carbon-12 atom is set at 12 amu Average atomic mass - Most naturally occurring elements have more than one isotope, meaning that when the atom

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Chapter 8, Problem 8.20 is Solved
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Textbook: Elementary Principles of Chemical Processes
Edition: 3
Author: Richard M Felder
ISBN: 9780471687573

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The radiant energy incident on the earth's surface on a