chapter 5 section 3 Flashcards
T? or F?: Force heating system is the most common type of heating system in the US.
T
a furnace burns ____ and heats a volume of air. a ___ then blows air through ducts which lead to ____ in each room
- fuel
- fan
- vents
T? or F?: Electric heating system is used widely in the US before forced heat systems.
F: Radiator System
a radiator is a _____ ____ container that contains ___ water or _____ which is heated by a central furnace. this steam is then carried through ____ to ______ in other rooms
- closed metal
- hot
- steam
- pipes
- radiators
T? or F?: Radiators only use radiation.
F: despite the name, radiators DON’T only se radiation, they also use CONDUCTION because particles from the steam heat particles in the metal which heat particles in the surrounding air. they also use CONVECTION to move the warmer air throughout the rooms
T? or F?: Electric heating coils transform electrical energy into mechanical energy.
F: …into THERMAL energy.
T? or F?: In an electric heating system, electric heating coils transform electrical energy into thermal energy
T
conduction in electric heating system role/job
transfers heat from coils to air and CONVECTION districts warm air throughout the rooms.
how does convection work together with conduction in electric heating?
CONDUCTION transfers heat from coils to air and CONVECTION distributes warm air throughout the rooms.
what would be an example of electric heating?
a portable space heater
what is PASSIVE solar heating?
materials inside a building absorb radiant energy from the sun ad heat up during the day. at night, when the building begins to cool, thermal energy absorbed by these materials help to keep the room warm
what is ACTIVE solar heating?
uses solar collectors to turn radiant energy into thermal energy. radiation from the sun heats air or water in the solar collector by transforming radiant energy into thermal energy. a pump circulates the hot fluid to radiators in rooms of the house
