Thermal Energy and Home Heating • Home heating as a model system for the greenhouse effect. Many similarities. • Practical application in energy consumption: – How much energy and money can we save for each degree that we lower the temperature in our homes? – What does this correspond to in greenhouse gas emissions? • To answer this and other questions we will look at: 1 Topics • Power and Thermal Energy. • Where our energy comes from: Chemical energy and energy resources. • Energy in humans. • Energy in homes and home heating at constant temperature. • What’s the difference between heat, thermal energy and temperature? • How is heat transferred to the environment or other objects? Conduction, convection and radiation. • Isolating homes: Thermal properties of materials. 2