|
TYPES OF ENERGY STORE - examples explained
(g) Thermal energy stores
IGCSE AQA GCSE Physics Edexcel GCSE Physics OCR GCSE
Gateway Science Physics OCR GCSE 21st Century Science Physics
Doc Brown's school physics revision notes: GCSE
physics, IGCSE physics, O level physics, ~US grades 8, 9 and 10
school science courses or equivalent for ~14-16 year old students of
physics
This page will help you answer questions
such as ... What is a thermal energy store? Can you describe examples of a thermal
energy store? How can you increase the thermal energy
content of a thermal energy store?
ALL my Physics Notes
Find your GCSE
science course for more help links to revision notes
Use your
mobile phone or ipad etc. in 'landscape' mode
This is a BIG
website, you need to take time to explore it [Website Search
Box]
email doc
brown
 Thermal
energy
and thermal energy stores
All objects above -273oC
(O K) have thermal energy, if not a lot at very low temperatures!
The hotter an object, the more
thermal/thermal energy the material contains/holds/stores and hot objects can release
thermal
energy to cooler surroundings.
Thermal energy can only move from a
higher temperature material to a lower temperature material - there must be
a negative temperature gradient for a net flow of thermal energy.
Thermal energy is due to the vibration of
atoms in solids or the kinetic energy of particle movement in liquids or
gases.
Thermal energy - 'heat', is all about the kinetic energy
of individual atoms or molecules.
Thermal energy from a thermal energy store can only flow from a higher
temperature region to a lower temperature region ie from hot objects to cold
objects.
Increasing an objects temperature
increases its thermal energy store.
The increase in the thermal energy
store is proportional to the rise in temperature.
Measurement of the efficiency of a fuel using a simple
calorimeter
When a fuel is burned, the chemical potential energy
contained in the fuel is converted to thermal energy.
The diagram shows a simple calorimeter system for measuring the heat given out by a liquid fuel burner.
The experiment data for burning four fuels A, B, C and D is given below.
Typically, 100 ml (100g) of water is used in the calorimeter to 'collect' the
thermal energy ('heat') given out.
The mass of fuel burned and the temperature rise of the water are given.
A relative measure of the thermal energy output of the
fuel per unit mass of fuel (relative efficiency) is easily obtained by
dividing the temperature rise by the mass of fuel burned.
The most efficient fuel will give the biggest ratio.
| Fuel |
Mass of fuel burned (m) |
Temperature rise oC
(T) |
T/m |
Comments |
| A |
1.20 g |
24.5 |
20.4 |
|
| B |
0.80 g |
12.0 |
15.0 |
Least efficient fuel |
| C |
1.75 g |
28.0 |
16.0 |
|
| D |
0.90 g |
19.5 |
21.7 |
Most efficient fuel |
Sections 6. and 7. from
Energy Changes in Chemistry
give you lots more details on calorimeter experiments.
For detailed examples of energy store
conversions see ...
Types of energy & stores - examples compared/explained, calculations of
mechanical work done and power
and
Introduction to heat transfer - conduction
(and thermal conductivity),
convection and radiation
GCSE
physics notes
and
Specific heat capacity: how to determine it, use of data,
calculations and thermal energy stores
Energy resources,
energy
transfers, work done and
electrical power supply revision notes index
Types of energy & stores - examples compared/explained, calculations of
mechanical work done and power
Chemical
energy stores *
Elastic
potential energy stores, calculations *
Electrical
& electrostatic
energy stores
Gravitational potential
energy and calculations *
Kinetic
energy stores
and calculations *
Nuclear
energy store
Thermal
energy stores *
Light energy *
Sound energy *
Magnetic
energy stores
Conservation of energy,
energy transfers-conversions, efficiency - calculations and
Sankey diagrams gcse physics
See also
More on methods of reducing heat transfer eg in a house, insulating properties of materials
Energy resources: uses, general survey & trends,
comparing renewables, non-renewables, generating electricity
Renewable energy (1) Wind power and
solar power, advantages and disadvantages gcse physics revision
notes
Renewable energy (2) Hydroelectric power and
geothermal power,
advantages and disadvantages
gcse physics
Renewable energy (3) Wave power and tidal barrage power,
advantages and disadvantages
gcse physics
See also
Renewable energy - biomass - biofuels & alternative fuels,
hydrogen, biogas, biodiesel gcse chemistry notes
Greenhouse
effect, global warming, climate change,
carbon footprint from fossil fuel burning gcse chemistry
The absorption and emission of radiation by
materials - temperature & surface factors including global warming
The Usefulness of Electricity gcse
physics electricity revision notes
and
The 'National Grid' power supply, mention of small
scale supplies, transformers gcse
physics notes
 GCSE/IGCSE
physics revision notes on thermal energy stores IGCSE revision
notes on thermal energy stores KS4 physics Science notes on thermal energy
stores GCSE physics guide
notes on thermal energy stores for schools colleges academies science course tutors images
pictures diagrams for thermal energy stores science revision notes on
thermal energy stores for revising physics modules physics topics notes to help on understanding of
thermal energy stores university courses in physics
careers in science physics jobs in the engineering industry
technical laboratory assistant
apprenticeships engineer internships in physics USA US grade 8 grade 9 grade10 AQA
GCSE 9-1 physics science revision notes on thermal energy stores GCSE
notes on thermal energy stores Edexcel GCSE 9-1 physics science revision notes on
thermal energy stores for OCR GCSE 9-1 21st century
physics science notes on thermal energy stores OCR GCSE
9-1 Gateway physics science
revision notes on thermal energy stores WJEC gcse science
CCEA/CEA gcse science GCSE physics revision notes on thermal
energy stores
|
|
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
| Website content © Dr
Phil Brown 2000+. All copyrights reserved on revision notes, images,
quizzes, worksheets etc. Copying of website material is NOT
permitted. Exam revision summaries & references to science course specifications
are unofficial. |
|
