Download PDF of heating, cooling, and ventilation

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Transcript
Sustainable Communities Research Group: Heating, Cooling, and Ventilation
•
•
•
the winter, and cooler than the air above it in
the summer
In the winter, a heat pump removes heat
from the heat exchanger and pumps it into
the indoor air delivery system. In the
summer, the process reverses and warm
indoor air moves back into the heat
exchanger.
The heat removed from the indoor air can
also be used to heat water
Geothermal heat pumps use considerably
less energy than conventional heating
systems and reduce air pollution
Filtering
•
•
•
Pond Loop System [10]
•
The horizontal loop runs about 5-6’
underground
• The horizontal and pond piping systems are
subject to greater seasonal variation
• Vertical pipes are typically installed 75-300’
underground
• The pond loop system uses a pond, lake, or
retention basin as the heat sink and source
• The vertical loop system is the most
efficient, but also the most costly to install
• The absorption and supply of heat is
affected by the soil porosity, rock content,
moisture content, and soil type
Geothermal Reservoirs
• Geothermal reservoirs of hot water can be
used to provide heat to a building
• To do this, a well is drilled into a geothermal
reservoir to establish a steady stream of hot
water. Water is brought up through a well,
and a mechanical system (piping, heat
exchanger, and controls) delivers the heat
directly for its intended use.
• Current uses include heating buildings,
drying crops, and a number of industrial
processes
• A disposal system then injects the cooled
water underground or disposes of it at the
surface
Geothermal Heat Pumps
• The shallow ground (upper 10ft of earth’s
surface) maintains a nearly constant
temperature between 10-16°C.
This is
warmer than the air above ground level in
Artificially generated ultraviolet light, in the
C band (UVC), can be used for disinfecting
The system does not produce ozone or other
harmful products
It can kill or neutralize certain:
1. Viruses
2. Bacteria
3. Mold
4. Spores and toxins from microbes
5. Volatile organic compounds
6. Musty odours
References
1.
Advanced House Technologies: Integrated
Mechanical System. CANMET (Canada
Centre for Mineral and Energy Technology),
1991. pg. 3.
2.
Grady, Wayne. Green Home: Planning and
Building the Environmentally Advanced
House. Camden House, Camden East, ON,
1993. pg.156.
3.
Grady, Wayne. Green Home: Planning and
Building the Environmentally Advanced
House. Camden House, Camden East, ON,
1993. pg.154.
4.
Grady, Wayne. Green Home: Planning and
Building the Environmentally Advanced
House. Camden House, Camden East, ON,
1993. pg.160.
5.
Million Solar Roofs: Solar Space Heating
http://www.eren.doe.gov/millionroofs/spaceheat.html
4
Document related concepts
no text concepts found