ELECTRICAL HEATING Name : Mohammed Saad ALghamdi. ID : 425 10 64 93. Day : Wednesday. Date : 09/05/1429 H. Dr - Malik ALahmed.

Slides:

Advertisements

Similar presentations

Chapter 3 Ohm’s Law.

Advertisements

Factors Affecting Resistance

Electricity & Magnetism Physical Science. Static Electricity Atoms are made of charged particles: – Electrons: orbit the nucleus of the atom and have.

AN-NAJAH NATIONAL UNIVERSITY FACULTY OF ENGINEERING DEPARTMENT OF MECHANICAL ENGINEERING Prepared by: Wajdi abu-muhsen Khaled aamer Ahmad Al-Hunate Nabeel.

EGEE 102 – Energy Conservation And Environmental Protection Energy Efficiency.

Chapter 6 Thermal Energy

Section 16.3 Using Heat.

Heat and States of Matter

Lecture One Resistance, Ohm ’ s Law series and parallel.

Preview Objectives Electrical Potential Energy Potential Difference Sample Problem Chapter 17 Section 1 Electric Potential.

RETScreen® Energy Efficiency Projects

H E A T T R A N S F E R Name : Mohammed Saad ALghamdi. Name : Mohammed Saad ALghamdi. ID : ID : Day : Wednesday. Day : Wednesday.

 Industrial societies spend huge amounts of energy.  Much of it is supply by electricity which comes from generators in power stations.

 Over 400 deaths occur annually from electric shock  Half of all deaths occur with low voltage outlets  On the job site, one death per day and

Electricity Current Electricity.

Electricity. Starter:  What is current?  What is it measured in?  What is it measured by?  Which is the series and parallel circuit? (see board)

Introduction Energy resources in agriculture have evolved a lot over the years. We are constantly developing new greener energy sources that are beneficial.

November 19, 2013 Agenda 1.Roll 2.PowerPoint titled: Heat Technology 3.Video “Head Rush: Liquid Nitrogen Balloon”

Introduction utilization of electrical energy

Thermal Energy and heat

Current Electricity. How is current produced? When a high potential is connected by a conductive material to a low potential. When a high potential is.

U3e-L2 Moving electrons have _______. The _______ of an electric circuit uses the electrons’ ability to do work. The three basic units in electricity are.

Chapter 22 Current Electricity Milbank High School.

4.2.3B Electrical Power What About Watts?. Power Law Moving electrons (current) requires ENERGY How much energy gets used depends on: Strength of push.

Why can’t heat be converted completely into work?.

Ohm’s Law Conductor A conductor is a material that current can pass through easily, like metals.

A flow of charged particles is called an Electric Current. It is produced by a difference in electrical potential (voltage!) between two charged conductors.

5.3 Essential Questions What are the first and second laws of thermodynamics? How does an internal combustion engine work? How does a refrigerator work?

ELECTRICITY AND MAGNETISM BY: Tanisha Alexander 5A.

Quiz on Domestic Electrical Appliances. 1. A resistance coil is also called a heating coil. a fuse. an earth wire. a live wire.

Section 10.3 Using Heat. Heating System Heating Systems: Def. p Work can be done to increase temperature. Example of this is when you rub your.

Using Thermal Energy Chapter 6 Notes. Thermal Energy on the “Moo”ve Conduction- transfer of energy by direct contact of particles Convection- transfer.

THERMAL ENERGY By Hannah Pelayic 1 st hour Picture of a solar flair.

Chapter 22 Current Electricity.

Electrical Power and Energy. Electrical Power We briefly discussed power (P = W/T), where P = power, W = Work, and T = Time – Power was defined as the.

Electric Energy Using Electric Energy Energy can be neither created nor destroyed,…but it can be transformed from one kind to another.

Section 3 Using Heat.

Heat engines played a key role in the development of the modern industrial world. Steam locomotives were an important early use of the steam engine. Electric.

Potential Energy  Kinetic Energy  Electricity. Energy Resource Use.

Electric Current. Flow of Charge Potential difference causes flow of charge Similar to water flowing from high level to lower level Electric current is.

U3e-L2 1.Pass over last night’s homework. 2.Moving electrons have _______. 3.The _______ of an electric circuit uses the electrons’ ability to do work.

Reading Materials: Chapter 9

The Bases of Energy: forms, units and efficiency

Chapter 2.3 Notes Work in Electrical Systems. A force does work on an object when it moves the object. A force does work on an object when it moves the.

Current Electricity Current and Circuits Producing Electricity: electric current conventional current battery photovoltaic.

U3e-L2 1.Pass over last night’s homework. 2.Moving electrons have _______. 3.The _______ of an electric circuit uses the electrons’ ability to do work.

22.1 Current and Circuits. Producing Electric Current When 2 conducting spheres touch, charges flow from the sphere at a higher potential difference to.

Using Thermal Energy—Chapter 6

HEAT-GENERATING EQUIPMENT INTRODUCTION SELECTION EFFICIENCY FURNACES BOILERS CENTRAL HVAC SYSTEMS.

EGEE 102 – Energy Conservation And Environmental Protection Energy Efficiency.

Definitions. Electricity Electric Current Current Direction The current direction is from positive to negative but the electron direction is from negative.

Using Heat Part 2. Science Journal Entry 32 Explain the advantages and disadvantages of thermal expansion.

Measuring Electricity. Electric Potential – the electrical energy that an electron possesses. Electric current is a measure of the rate at which the electric.

Energy Transformations

Bell Ringer 2/10 Write the objective

WARM UP Draw a picture of a SERIES Circuit. Show a battery, a switch, and a light bulb in your drawing. Draw a picture of a PARALLEL Circuit. Show a battery,

Electric-Heat Equipment

Aim: How do we determine the power in a circuit?

Do Now: A 30 kg wagon is pulled East on concrete with 100 N force at a constant speed. What is the coefficient of friction for this motion?

Current Electricity.

Energy Transfer & Transformation

Notes 7: Using Heat Chapter 6 Section 3 Page 172.

Ch. 16 Sec. 3 Using Heat.

Energy Transformations

______________ Combustion Engine

Ohm’s Law and Circuit Basics

Electric Currents.

Please bring your book tomorrow.

Electric Circuits.

Presentation transcript:

ELECTRICAL HEATING Name : Mohammed Saad ALghamdi. ID : Day : Wednesday. Date : 09/05/1429 H. Dr - Malik ALahmed

OUTLINE Introduction. Introduction. Definition. Definition. Electric Resistance Heating. Electric Resistance Heating. Types of Electric Resistance Heaters. Types of Electric Resistance Heaters. Mathematical analysis Mathematical analysis Fan heaters. Fan heaters. Conclusion. Conclusion.

Introduction The energy is converted from shape to other shape The energy is converted from shape to other shape Such as: Such as: Electrical energy thermal energy Electrical energy thermal energy

Definition Electric heating is any process in which electrical energy is converted to heat. Common applications include heating of buildings, cooking, and industrial processes. Electric heating is any process in which electrical energy is converted to heat. Common applications include heating of buildings, cooking, and industrial processes. An electric heater is an electrical appliance that converts electrical energy into heat. The heating element inside every electric heater is simply an electrical resistor, and works on the principle of joule heating: an electric current flowing through a resistor converts electrical energy into heat energy. An electric heater is an electrical appliance that converts electrical energy into heat. The heating element inside every electric heater is simply an electrical resistor, and works on the principle of joule heating: an electric current flowing through a resistor converts electrical energy into heat energy. A heat pump uses an electric motor to drive a refrigeration cycle, drawing heat from a source such as ground water or outside air and directing it into the space to be warmed. Such systems can deliver two or three units of heating energy for every unit of purchased energy. A heat pump uses an electric motor to drive a refrigeration cycle, drawing heat from a source such as ground water or outside air and directing it into the space to be warmed. Such systems can deliver two or three units of heating energy for every unit of purchased energy.

Electric Resistance Heating Electric resistance heating converts nearly 100% of the energy in the electricity to heat. However, most electricity is produced from oil, gas, or coal generators that convert only about 30% of the fuel's energy into electricity. Because of electricity generation and transmission losses, electric heat is often more expensive than heat produced in the home or business using combustion appliances, such as natural gas, propane, and oil furnaces. Electric resistance heating converts nearly 100% of the energy in the electricity to heat. However, most electricity is produced from oil, gas, or coal generators that convert only about 30% of the fuel's energy into electricity. Because of electricity generation and transmission losses, electric heat is often more expensive than heat produced in the home or business using combustion appliances, such as natural gas, propane, and oil furnaces.

Types of Electric Resistance Heaters Electric Furnaces Electric Furnaces Electric Baseboard Heaters Electric Baseboard Heaters Electric Wall Heaters Electric Wall Heaters Electric Thermal Storage Electric Thermal Storage Control Systems Control Systems

Mathematical analysis According to Joule's Law, the heat power produced by a resistor is: Joule's LawJoule's Law P = IV where P is the power in watts watts I is the current in amperes, and amperes V is the potential difference in volts, volts and according to Ohm's Law I and V are related as follows: Ohm's LawOhm's Law V = IR where R is the resistance of the heating element, in ohms. ohms

Fan heaters A fan heater is a variety of convection heater that includes an electric fan to speed up the airflow. A fan heater is a variety of convection heater that includes an electric fan to speed up the airflow. This reduces the thermal resistance between the heating element and the surroundings, allowing heat to be transferred more quickly. This reduces the thermal resistance between the heating element and the surroundings, allowing heat to be transferred more quickly.

conclusion Although they all use the same physical principle to generate heat, electric heaters differ in the way they deliver that heat to the environment. Although they all use the same physical principle to generate heat, electric heaters differ in the way they deliver that heat to the environment.