Teacher, create graded and non-graded assignments in minutes!

At Teachy you have access to thousands of questions, graded and non-graded assignments, projects, and lesson plans.

Free Registration

Discipline: Physics

Question topic: Heat Exchanges: Advanced

Source: Originais Teachy

Level of difficulty: Medium

(Originais Teachy 2023) - Question Medium of Physics

During the winter, many houses use double glazing on windows to reduce heat loss and save energy. Suppose a window is composed of two glass plates, each with a thickness of 0.005 m and an area A = 2 m², and the space between them is filled with dry air. The internal temperature of the house is 20°C and the external temperature is 0°C. Consider the thermal conductivity of glass to be 0.96 W/m·K and that of air to be 0.024 W/m·K. Use this information to answer the following questions: a) Calculate the amount of energy that flows per unit of time through each glass layer and the air between the layers. b) Determine the total rate of energy flow through the entire window. c) Provide a critical analysis, pointing out possible improvements in the window insulation system that could be explored in a winter sustainability project.

Answer:

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur id consequat justo. Cras pellentesque urna ante, eget gravida quam pretium ut. Praesent aliquam nibh faucibus ligula placerat, eget pulvinar velit gravida. Nam sollicitudin pretium elit a feugiat. Vestibulum pharetra, sem quis tempor volutpat, magna diam tincidunt enim, in ullamcorper tellus nibh vitae turpis. In egestas convallis ultrices.

Answer key available only for registered teachers.
Register at Teachy and get access now!

Teachy originals
Those who search for this subject, also viewed these questions...
Question 1:

Medium

An industry is planning to replace its current heating system with a more efficient and sustainable thermal system. The new installation includes a heater that converts 75% of its absorbed electrical energy into thermal energy. The heater consumes 8000 watts of electrical energy. Calculate the effective thermal power generated by the heater and select the correct option.
Teachy originals
Question 2:

Medium

The sensible heat is the thermal energy acquired by a body due to the transfer of heat between two different systems. Knowing this, what are the main variables that affect the transfer of heat?
Teachy originals
Question 3:

Medium

Source: UNICESUMAR
Question 4:

Medium

The calculation of the weight force of a body is done considering some variables. What is the mathematical expression that represents this calculation?
Teachy originals
Did you like these questions? We have more than 100,000 like these for you, teacher!
Save time with Teachy!
With Teachy, you have access to:
Classes and contents
Automatic grading
Assignments, questions and materials
Personalized feedback
Teachy Mascot
BR flagUS flag
Terms of usePrivacy PolicyCookies Policy

2023 - All rights reserved

Follow us
on social media
Instagram LogoLinkedIn LogoTwitter Logo