I have come to believe that the true innovators of human history are
the engineers who either by profession or instinct can look at a
project and say "What if ?", given enough time and money most things
can be done, but like the great practical Roman engineers this luxury
is rarely available so the engineer says "What if ?"first, then what is
practical? is there any way
to improve on practical at a reasonable cost?. What was done
historically is to learn and apply knowledge from other area's or
countries in a local way, sometimes improving the original
process.
I would like to tell you a small bit about my Project, my name is
Andrew Edwards;I came up with the concept
of using geodesics with the roman architectural villa, with a central
Courtyard, I did this by placing twelve equal sized rectangles narrow
side end to end to make a polygon of twelve sides thereby maximising
the courtyard area.
This appealed to me as it makes the outside--- inside with
windows facing in. Some of the wealthier Romans also had a peristile or
garden. This concept for the roman villa gave two things that are still
valid today security and privacy.
I wish to create an energy dynamic environment that is in
thermal equilibrium with the seasons, making a safe warm home
by harvesting and storing natures energy in an ecologically sound
manner with due diligence and respect to those engineers that have
pioneered some of these idea's.
Systems list
The south facing roof fabric to be covered by water solar panels
heating a glycol transfer liquid, the temperature is to be optimised by
flow control firstly to thermal storage gel then the inner earth heat
bank until setpoint reached then to outer earth heat bank. returning to
the solar panel. the building is a warm roof with constant air
change.
The thermal storage gel has a theoretical heat capacity 480%
more than water, with a heat loss of less than 1% per day this will
allow seasonal cover for domestic heating and water.
The heat will be transferred to the building fabric via a
Roman type Hypocaust via an indirect glycol fluid to a heat exchange
unit, using air as the transfer medium, running under the floor and up
through the cavity via a return vent to the crawlspace This has
the advantage of very few moving parts.
At the end of winter season pump speed will increase to meet
demand, there will be an upper warm roof vent for the whole house that
will exit through the outer earth heat bank. Outside fresh air
incoming will be heated to outgoing temperature via underground heat
exchange in the earth bank dependant upon the set house temperature
requirement, power for the low speed low voltage magnetic pumps and low
speed low voltage fans, the power will be drawn either from a battery
store or direct from an inconspicuous small vertical axis wind turbine,
or a low speed high torque modified Stirling engine, which runs on
temperature differences, both are low cost low tech
I will be using white LED lamps which are now available they
run at 1w @ 12v which is very low power they last a lifetime
100,000 hrs plus they are brighter than florescent lights.
Next are the specific heat loss table:
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I have named my new home
"Stoney Hollow" the following link will take you to the house
plans ** House Plans**
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Current Status of project is that I
now own the site and have planning permission for a relativly straight
forward bungalow, I have submitted these new plans for permission for
change of house design, I will keep the website up to date on any
developments from Limerick County Council. I also hope to have some
pictures online soon,
Update 06/06/2003
Planning Permission has be given, with a few conditions, So now I can
start organising the project. :)
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: If you have any comments please contact me by email, all
thoughts are welcome :) : Email Contact