4 hr31,000 Btu/hr8 hr8 hrB A house, for cooling purposes, consists of two zones: the attic areazone A and the living area zone B (see below figure). The living area iscooled by a 2-ton air conditioning unit that removes 31,000 Btu/hr. Theheat capacity of zone B is8.°F per thousand Btu. The time constant forheat transfer between zone A and the outside is 4 hr, between zone Band the outside is 8 hr, and between the two zones is 8 hr. If theoutside temperature stays at 90°F, how warm does it eventually get inthe attic zone A?....It eventually gets to be(Type an integer or decimal rounded to the nearest hundredth as needed.)°F in the attic zone A.

Solution: Given Data: K1 = 1/4 K2 = 1/8

A house, for cooling purposes, consists of two zones: the attic area zone A and the living area zone B (see below figure). The living area is cooled by a 2-ton air conditioning unit that removes 31,000 Btu/hr. The 1 heat capacity of zone B is ,°F per thousand Btu. The time constant for 8 heat transfer between zone A and the outside is 4 hr, between zone B and the outside is 8 hr, and between the two zones is 8 hr. If the outside temperature stays at 90°F, how warm does it eventually get in the attic zone A? It eventually gets to be (Type an integer or decimal rounded to the nearest hundredth as needed °F in the attic zone A.

A house, for cooling purposes, consists of two zones: the attic area zone A and the living area zone B (see below figure). The living area is cooled by a 2-ton air conditioning unit that removes 31,000 Btu/hr. The 1 heat capacity of zone B is ,°F per thousand Btu. The time constant for 8 heat transfer between zone A and the outside is 4 hr, between zone B and the outside is 8 hr, and between the two zones is 8 hr. If the outside temperature stays at 90°F, how warm does it eventually get in the attic zone A? It eventually gets to be (Type an integer or decimal rounded to the nearest hundredth as needed °F in the attic zone A.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.

Question

A house, for cooling purposes, consists of two zones: the attic area
zone A and the living area zone B (see below figure). The living area is
cooled by a 2-ton air conditioning unit that removes 31,000 Btu/hr. The
heat capacity of zone B is
8.
°F per thousand Btu. The time constant for
heat transfer between zone A and the outside is 4 hr, between zone B
and the outside is 8 hr, and between the two zones is 8 hr. If the
outside temperature stays at 90°F, how warm does it eventually get in
the attic zone A?
....
It eventually gets to be
(Type an integer or decimal rounded to the nearest hundredth as needed.)
°F in the attic zone A.

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