Transcript Active Solar Heating

Active Solar Heating
By: Atif Mian
The objective is to teach everyone
more about active solar heating
systems and what its advantages
are.
What is Active Solar Heating?

Basically, active solar heating is the use of a system that
converts and stores energy from solar radiation to heat a
home or its water. It is called “active” solar heating
system because it uses pumps and fans to transfer the
heat

Active solar heating uses concepts similar to passive
solar heating. However, active solar takes the power of
the sun and amplifies it. Using specially designed
mechanical systems, active solar heating can generate
much more heat for space heating and hot water than
passive solar alone
How does it work?

Solar collectors are at the heart of most
active-solar energy systems. The collector
absorbs the sun's light energy and
changes it into heat energy by the aid of
pumps or fans. The heat is then
transferred to another location for
immediate heating or for storage for use
later
Applications

Applications for active solar energy include
heating swimming pools, domestic hot
water use, ventilation and industrial
process air and water for commercial
facilities such as laundries, car washes and
fitness centers
Types

There are two basic types of active-solar
heating systems, the air or liquid systems.
A liquid-based system heats water or an
antifreeze solution in a "hydronic"
collector, and an air-based system heats
air in an "air collector"
Advantages

Solar energy is a renewable resource that
is environmentally friendly. Unlike fossil
fuels, solar energy is available just about
everywhere on earth. And this source of
energy is free, immune to rising energy
prices. Solar energy can be used in many
ways to provide heat, lighting, mechanical
power and electricity
How to minimize heat loss
Minimize the distance from collection to the
storage source. The longer the run from the
collectors to storage, the greater the heat loss
and reduced system efficiency.
 Optimize insulation of collectors, ducts, pipes,
and storage.
 Place duct and piping runs within conditioned
space.

Cost
Some people may install a solar water heating system to
help conserve the world’s supply of fossil fuels. Most
people, however, will be more concerned with the money
that the system could help them save in the future.
The cost of a solar water heater consists of:
- Cost of the components (the components depend on
what you are trying to heat such as for pool you would
need a smaller size collector than for a house)
- Cost of paying the installer to fit it
Conclusion

It is easy to see and feel the power of the sun
as it warms and lights the Earth. Today, we are
able to harness to power of the sun in numerous
ways, including using it for water heating, space
heating, and space cooling in buildings.
Many buildings are now designed to take full
advantage of the sun's warmth. Solar heating
can be fully integrated into a building during the
design phase or an existing building can be
retrofitted to take advantage of solar heating.
Questions

What are the 2 basic types of active solar
heating?

What does the cost of active solar heating
consist of? (2 things)
References
Books:
Natural Resources Canada,
Solar Water Heater's: A Buyer's Guide, (Ottawa: Minister of Supply and
Services, 1987).
Noble, Duncan and Robert K. Swartman,
The Canadian Renewable Energy Guide, (Burnstown: General Store Publishing
House, 1995).
Internet:
http://www.newenergy.org/sesci/publications/pamphlets/active.html
http://www.healthgoods.com/Education/Energy_Information/Renewable_Energ
y/heating_with_active_solar.htm
http://www.esru.strath.ac.uk/EandE/Web_sites/01-02/RE_info/active_solar.htm