/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 34 Explain what a heat engine does ... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 5: Problem 34

Explain what a heat engine does and what a heat mover does.

Short Answer

Expert verified
Question: Describe the primary differences between a heat engine and a heat mover in terms of their functionality and working principles.

Step by step solution

01

Definition of a Heat Engine

A heat engine is a device that converts heat energy into other forms of energy, usually mechanical energy. It operates by exploiting the temperature difference between two reservoirs: a hot reservoir (source) and a cold reservoir (sink). During this process, heat is transferred from the hot reservoir to the cold reservoir, while a part of the heat energy is converted into useful work.
02

Definition of a Heat Mover

A heat mover, also known as a heat pump or refrigerator, operates opposite to a heat engine. It is a device that transfers heat energy from a cold reservoir (source) to a hot reservoir (sink) against its natural flow. The heat mover consumes energy in the form of work to transfer heat from the colder side to the warmer side.
03

Understand the Working Principles of Heat Engine

The fundamental principle behind the operation of a heat engine is the concept of a thermodynamic cycle. The heat engine undergoes repeated cyclic processes involving heat absorption, conversion to work, releasing of heat to the cold reservoir, and returning to its initial state. A common example of a heat engine is a steam engine, where water is heated to generate steam, and the expansion of steam drives a piston to create mechanical energy.
04

Understand the Working Principles of Heat Mover

The working principle behind a heat mover is to transfer heat from a lower temperature to a higher temperature. These devices consume work (energy) to overcome the natural flow of heat from high to low temperature. As a result, the cold reservoir becomes colder, and the hot reservoir becomes hotter. Heat movers are commonly used in household appliances like refrigerators and air conditioners.
05

Comparing the Two Devices

While heat engines are designed to convert thermal energy into other forms of energy (primarily mechanical energy), the primary objective of a heat mover is to transfer heat between two reservoirs against its natural flow. It is important to remember that heat engines will always discard some heat energy as waste, while heat movers consume work to achieve their goal.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

A submerged heater is used in an aquarium to keep the water above room temperature. Should it be placed near the surface of the water or near the bottom to be most effective?

Air molecules in a warm room \(\left(27^{\circ} \mathrm{C}=300 \mathrm{~K}\right)\) typically have speeds of about \(500 \mathrm{~m} / \mathrm{s}(1,100 \mathrm{mph})\). Why is it that we are unaware of these fast- moving particles continuously colliding with our bodies?

Describe the three methods of heat transfer. Which of these are occurring around you at this moment?

Describe how changing the air pressure affects the temperature at which water boils.

In winter, the amount of internal energy a heat pump delivers to a house is greater than the electrical energy it uses. Does this violate the law of conservation of energy? Explain.
See all solutions

Recommended explanations on Physics Textbooks

Torque and Rotational Motion

Read Explanation

Famous Physicists

Read Explanation

Classical Mechanics

Read Explanation

Turning Points in Physics

Read Explanation

Physical Quantities And Units

Read Explanation

Electromagnetism

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.