Transcript: Solar Energy | Oct 15, 1979

A slate with the caption “Solar energy” appears on screen.”

The narrator says EVERY SUNRISE SIGNIFIES
THE ARRIVAL OF THE ONE
ENERGY SOURCE THAT
IS FREE TO EVERYONE.
OUR GRANDPARENTS KNEW
ABOUT PASSIVE SOLAR ENERGY.
SUN PORCHES HAVE LONG
BEEN A FEATURE
OF CANADIAN LIFE.
GREENHOUSES EXPLOIT
PASSIVE SOLAR ENERGY
TO EXTEND THE GROWING
SEASON UP TO FOUR WEEKS
IN SPRING AND FALL.
IT'S THE ALL-IMPORTANT
HEAD START FOR
PROFESSIONAL GARDENERS.
IN COMMERCIAL GREENHOUSES
THE HEAT OF THE DAY IS
TRAPPED INSIDE, KEPT
OVERNIGHT, AND REPLENISHED
WHEN THE SUN RISES.
OLDER HOUSES WERE
VIRTUAL HEAT SIEVES.
WITH FUEL AT TEN CENTS
A GALLON, WHO CARED?
BUT TODAY IMPROVED INSULATION
MATERIALS CAN MAKE HOMES
ENERGY EFFICIENT.
THESE NEW HOMES CAN MAKE
AN ADDITIONAL SAVING OF
AS MUCH AS 50 PERCENT ON
POTENTIAL HEATING BILLS
BY USING PASSIVE
SOLAR ENERGY.
ENERGY FROM THE SUN IS
WELL USED IN THIS TYPICAL
INSULATED SUBURBAN HOME
OWNED BY DOCTOR TOM LEDWELL
OF ENERGY, MINES
AND RESOURCES.

Doctor Tom Ledwell is in his living room. He’s in his mid-forties, with short wavy black hair and thick sideburns. He wears gray trousers and a short-sleeved white shirt.

[clock ticking]

The narrator says SOUTH-FACING WINDOWS
ARE LARGE AND REFLECTIVE
CURTAINS HELP TO KEEP
ABSORBED HEAT INSIDE AT NIGHT.
MATERIALS INSIDE,
SUCH AS MASONRY FLOORS
AND BRICK WALLS,
STORE SOLAR HEAT.
THIS PASSIVE SOLAR ENERGY
IS RELEASED OVERNIGHT
TO HELP HEAT THE HOUSE.
LARGE EAVES SHIELD THE
SOUTH-FACING WINDOWS
AND KEEP THE HIGH,
HOT SUMMER SUN OUT
BUT LET THE LOW,
WINTER SUN IN.
LIMITED NORTH-FACING
WINDOWS OF SMALL AREA
AND NO WINDOWS AT ALL
ON THE NORTHERN WALL,
COMBINE WITH GOOD
INSULATION TO TRAP
THE SOLAR ENERGY INSIDE.
AT SASKATCHEWAN'S CONSERVATION
HOUSE IN REGINA, NORTH-FACING
WINDOWS ARE TINY
YET LET LIGHT IN,
AND THE NORTHERN
WALL IS WINDOWLESS.
THE SOUTHERN EXPOSURE IS 50
PERCENT TRIPLE-GLAZE GLASS.
EAVES OVERHANG A HUGE 4
FEET WHILE REFLECTIVE BLINDS
OR SHUTTERS WITH 4 INCHES OF
INSULATING STYROFOAM CAN
TOTALLY SEAL THE
HOUSE AT NIGHT.

Fast clip shows images of the houses.

The narrator says RESEARCHERS FROM THE UNIVERSITY
OF SASKATCHEWAN ARE CLOSELY
MONITORING A WASTEWATER
HEAT RECOVERY UNIT WHICH
THEY DESIGNED TO RECOVER
HEAT FROM WATER USED IN
LAUNDRY AND BATHING.
NOW UP TO 40 PERCENT OF
THIS HEAT IS RECAPTURED
AND RECIRCULATED INTO
THE HOT WATER TANK AS A
SUPPLEMENTARY HEAT SOURCE.
TRADITIONAL HOT WATER
TANKS IMMERSED IN THE GREY
WASTEWATER ABSORB MUCH
OF THE HEAT WHICH WOULD
OTHERWISE FLOW
DOWN THE DRAIN.

A fast clip shows a man operating the unit.

The narrator says ACTIVE SOLAR COLLECTORS
SUPPLEMENT THE SYSTEM'S
SAVED HEAT, AND THE RESULT
IS INEXPENSIVE, PLENTIFUL
HOT WATER IN
CONSERVATION HOUSE.
COMMON SENSE CONSTRUCTION
METHODS, INSULATION AND
PLANNING CAN HELP US TO
REDUCE OUR HEATING COSTS
USING THE MOST RENEWABLE
ENERGY SOURCE WE HAVE.

A slate appears with a caption that reads “A production of TV Ontario. The Ontario Educational Communications Authority. 1979.”

Watch: Solar Energy