Energy & EcoTechnology Module 4 of the PDC+++ PDC + + + We dedicate this Module to the Mother & Father of Integral Permaculture: Dana Meadows & Howard Odum, two original pioneers who helped humanity make great strides in understanding systemic thinking, in all four quadrants. How do we Design good EcoTechnologies? Part 1b * Technology is the application of science, so a good basic knowledge of science is essential if we are to design technologies of any kind. * And everything that transforms energy or matter from one form to another is a technology, so science and technology really are basic for life, and certainly for designers. * In this first part of two we explore the relevance of space elevators to permaculture, then delve into the science of heat, flows, optics & materials in order to understand how to best design ovens, solar devices, Class M4.9b EcoTech
Transcript
Energy & EcoTechnologyModule 4 of the PDC+++PDC
++
+We dedicate this Module to the Mother &
Father of Integral Permaculture: Dana Meadows & Howard Odum, two original
pioneers who helped humanity make great strides in understanding systemic
thinking, in all four quadrants.
How do we Design good EcoTechnologies? Part 1b*
Technology is the application of science, so a good basic knowledge of science is essential if we are to design technologies of any kind.
*And everything that transforms energy or matter from one form to another is a technology, so science and technology really are basic for life, and certainly
for designers. *
In this first part of two we explore the relevance of space elevators to permaculture, then delve into the science of heat, flows, optics & materials in
order to understand how to best design ovens, solar devices, heating & cooling technologies - with lots of examples
Class M4.9b
EcoTech
Class recorded during
the Online Festival to Celebrate
Evolutionary Love
live from 11th to the 23rd
of February 2013
ongoing & asynchronic (in our own time)
after that
by
www.presents.nodoespiral.net
Us
Me
All Life
ReDesigning Eros
Part2 M4.9b
M4.9 * How do we Design Good EcoTechnologies?
Organized Complexity
Appropriate technology 1
a) Heating
b) Cooking & Optics
c) Drying
d) Cooling
e) Watering
Individual
Collective
Inte
rior Exter ior
www.bit.ly/EcoTechnology
Barrel Smoking - Meat
Open-Air Drying - Fruits
Indoor Drying - Tobacco
Solar Dehydrator
To dry food you need…
Heat
Airflow
Protection
Open-Air Solar Drying
Drying of fruit on top of netting in summer
Sun-curing oriental tobacco
Drying rack for herbs
Evaporation
Evaporation
Water temperature Air-Water Contact Area Air Circulation Air Dryness Time
Indoor Drying
Indoor Drying Rack
La Vera Tobacco Drying House
Tobacco Drying
Smoking
La Vera PimentónLa Vera red pepper smoking
house
Smoking tripod with meat
Smoking barrel with fish
Smoking fish in Africa
Air Density
Bouyancy
Temperature
Density
Humidity
Suspended particles(dust, etc.)
Small Solar Dehydrators
Fridge solar dehydrator in Dell Artemis Farm, California
Recycled solar dehydrator in Nova Scotia Demo in Transition Town Worthing
Wildland Conservation Service in Missoula
Designed to be• attractive, • easy to transport, and• quick at drying (big collector & small drying space)
Solar Dryer• In a University campus, to be used by the students
Moving fluids
Pressure in entry(pushing the fluid)
Contact
Pressure in exit(pulling the fluid)
Obstacles
M4.9 * How do we Design Good EcoTechnologies?
Organized Complexity
Appropriate technology
Heating, Cooking
Drying
Cooling
Watering
Individual
Collective
Inte
rior Exter ior
& Transpiration in plants
See "Cooling Science" in
www.bit.ly/EcoTechnologyCooling Science
By Evaporation
Zeer Pot Fridge
Invented in Nigeria by Mohammed Bah Abba in
1995.
However there are reports that the technology was used in Ancient Eygpt.
By Creating Air Currents
See "Cooling Science" in
www.bit.ly/EcoTechnology
Draft Cabinets & Caves
Las Cuevas Árabes de Brihuega
Ancient food storage spaces - conserve same temperature all day & night, some 12degrees C
<< David Holmgren's Fridge
By Sucking-in Cooler Air
See "Cooling Science" in
www.bit.ly/EcoTechnology
35C
13C
By Storing Ice & Snow
snow pit can last until summer -
used as cool storage for milk products,
steps cut into sides as snow level lowers
& other Cool Fridgescold air heavier
insulation best in freezer part
0.1 kWh / day
vertical door =losses
90 seconds / hour (silent)
1 kWh / day is wasted
consume less power/volume, even though they maintain much colder temperatures
New thermostatcuts off power when
needed temp is reached
to measure used energy
Imagination
M4.9 * How do we Design Good EcoTechnologies?
Organized Complexity
Appropriate technology 1
a) Heating
b) Cooking & Optics
c) Drying
d) Cooling
e) Watering
Individual
Collective
Inte
rior Exter ior
www.bit.ly/EcoTechnology
Evaporation - higher energy molecules escape
Condensation - gas molecules near surface
loose KE to liquid
Cloud Seeding
Condensation due to
expansion of air
(lowering of pressure cools
air)
Condensation due to cooling of air
(next to a cold surface)
Apart from
'seeding'...
All relative temperature, pressure, humidity ... & 'seeds'
Fog Basking Beetle
or Darkling Beetle
(Onymacris Unguicularis)
Drinking from Water Drops
Collected
Garoé Tree, in La Gomera, Canary Islands
Fog Catchers
Fog Catchers
Fog Catching nets in Lima, Peru
Design of Coastal Fog Towers, for Chile
Solar Stills
Solar Stills
osmosis
Reverseosmosis >
For water purification
Pumpssaqiya chain
pump, current Turkey,
1206
Archimedes' Screw
See "Water Pumps" in
www.bit.ly/EcoTechnology
Pumps
Bicycle-powered Rope Pump, in
Nicaragua
"We're probably known around the
universe as that really noisy
blue planet where everybody
pees in their water."
(Will Durst)
Gray Water Harvesting
See "Gray&BlackWater" in
www.bit.ly/EcoTechnology
5. Santa Valentina Present for Butterflies
A webinar about Food Science
* the Big Evolutionary Controversies
* Better Food & the Landbase
* How we're kept stupid & sick with old food myths
For people who contribute 2-3 posts in the Wiser group! Before end March :)
email us atnodoespiral@
nodoespiral.net
Present
Energy & EcoTechnologyModule 4 of the PDC+++PDC
++
+We dedicate this Module to the Mother &
Father of Integral Permaculture: Dana Meadows & Howard Odum, two original
pioneers who helped humanity make great strides in understanding systemic
thinking, in all four quadrants.
How do we Design good EcoTechnologies? Part 1b*
Technology is the application of science, so a good basic knowledge of science is essential if we are to design technologies of any kind.
*And everything that transforms energy or matter from one form to another is a technology, so science and technology really are basic for life, and certainly
for designers. *
In this first part of two we explore the relevance of space elevators to permaculture, then delve into the science of heat, flows, optics & materials in
order to understand how to best design ovens, solar devices, heating & cooling technologies - with lots of examples
