Photovoltaic |
Free Energy?
Energy is free? Yes, it’s free but to extract and convert it into a form that usable for our current technology is not. Disregard the energy spatter from the universe since the big bang (creation of universe). Sun is the main source of energy to earth from the aspects of biology, chemistry to physics. Sun rays sponsor its energy to all of us. Plant requires it in photosynthesis to grow and feed others animals which human are also part of the ecological food chain which means to say all living beings are either using energy directly or indirectly from the sun.
Universe energy |
It was my honour to have been invited to attend the forum of Scenario Building year 2030 (Energy), by MIGHT, along with some thirty top guys in the industry& society. I can’t hesitate (though I remain silent) to agree that “Energy is free” when the statement shouted out by another attendee but since they have categorized it into the “W” omega scenario (wildcard) then its better to remain so or I’ll be called a lunatic again.
The law of conservation of energy imply that
the world including us (Human) is part of the energy metamorphosis system and
therefore there is never a shortage of energy but the inability to efficiently
transform it into a useful state at our current technology causes the problem.
Factors ensuring availability of energy for all are;
- 1. Efficiency of technology converts raw energy into a useful state.
- 2. Availability of useful primary energy.
- 3. Environmental effect of the energy transformation
- 4. Growth of population
- 5. Consumption of energy per capita/ energy consumption pattern/GDP.
- 6. Affordability
Efficiency
of technology
Since
energy can’t be created or loss, we can’t actually consume energy but misusing
the word “consume” does make readers and writer’s life easier. In contrast with
Wikipedia definition, my definition of Energy Conversion Efficiency is the ability of a mechanism in converts
input energy to useful output energy plus residue energy.
∑input
Energy = ∑ useful Energy + ∑ Residue Energy
Thus,
an efficient technology converting raw energy into a useful state means the
ability of a method/ of machineries convert input energy to maximum useful
energy with least residue energy (wastage) possible. The desire output energy
can be in the form of;
- 1. Electricity (for electrical driven machines/ appliances)
- 2. Mechanical (Transport, moving machinery)
- 3. Thermal (Heat production)
- 4. Luminous (Lighting)
Inadvertently,
all these forms of energies have twisting themselves evolving from one form to
another within our life without being notice but what for certain is residue
energy in the form of heat proof detrimental to our (human) climate. Therefore
energy efficiency is the key to ensure maximum potential utilization of fuel
especially the non-renewable fuel.
In
recognizing the facts that we can’t survive in extreme climate condition if the
residue energy and harmful chemicals waste from our energy conversion does not
renewed, disposed or converted into a stable or useful state, let along the
ever showering sun ray (electromagnetic energy) onto earth via our pitiful
state ozone will make our earth explode like in the movie 2012!
Undeniably
economy does influence greatly in shaping the future energy landscape but
invest half of our national (Malaysia) key drivers into it while only left 1
driver for ‘climate change’ show how we underestimate the power of nature. First,
we created the idea of money (a medium endow with value use for exchanging our
desires) then make ourselves believe that money is all we need to survive,
later more ironically that we dig out the silent energy safely deposited in the
ground and crazy about it with the money we invented. It’s as hilarious as hard
for me to comprehend what is the meaning of economy or value of money if earth
comes to an end for humankind.
Of
course it would be too extreme (W-Omega
scenario, i.e. social derailment) if we totally neglect how our current economy
system works. It’s a balancing act between the cliffs, to juggle our
environment and financial security so as to avoid nature claims our life as
well as our psychological self-destruction.
In
the alpha scenario (α, optimistic), we should have the brain power as well as
the environmental conscious to invent and improve greater efficiency technology
with lesser negative effects to environment. The possible technologies in
future are;
- · Inductive chargers
- · Tidal turbines
- · Fuel cells
- · Bio-enhanced fuels
- · Multi-segmented smart grids
- · Photovoltaic glass
- · Piezo-electricity
- · Biomechanical harvesting
- · Nano-generation
- · Artificial photosynthesis
- · Enernet
- · Thorium reactor
- · Traveling wave reactor
- · Space-based solar power
The
existing energy conversion efficiency;
Conversion process
|
Energy efficiency
|
Electricity
generation
|
|
Gas
turbine
|
up to
40%
|
Gas turbine plus steam
turbine (combined cycle)
|
up to
60%
|
Water
turbine
|
up to
90% (practically achieved)
|
Wind
turbine
|
up to
59% (theoretical limit)
|
Solar
cell
|
6–40%
(technology dependent, 15% most often, 85–90% theoretical limit)
|
Fuel
cell
|
up to
85%
|
World Electricity
generation 2008
|
Gross
output 39%, Net output 33%.[1]
|
Engine/Motor
|
|
Combustion
engine
|
10–50%[2]
|
Electric
motors
|
70–99.99%
(above 200W); 50–90% (between 10–200W); 30–60% (small ones < 10W)
|
Natural
process
|
|
Photosynthesis
|
up to
6% [3]
|
Muscle
|
14–27%
|
Appliance
|
|
Household refrigerators
|
low-end
systems ~ 20%; high end systems ~ 40–50%
|
Incandescent
light bulb
|
0.7–5.1%,[4] 5–10%[citation
needed]
|
Light-emitting
diode (LED)
|
4.2–14.9%,[4] up
to 35% [5][dead link]
|
Fluorescent
lamps
|
8.0–15.6%,[4] 28% [6]
|
Low-pressure
sodium lamps
|
15.0–29.0%,[4] 40.5% [6]
|
Metal
halide lamps
|
9.5–17.0%,[4] 24% [6]
|
Switched-mode
power supply
|
currently
up to 95% practically
|
Electric
shower
|
90–95%
(overall it would be more efficient to use a heat pump, requiring less
electric energy[citation needed])
|
Electric
heaters
|
~100%
(essentially all energy is converted into heat)
|
Others
|
|
Firearm
|
~30%
(.300 Hawk ammunition)
|
Electrolysis
of water
|
50–70%
(80–94% theoretical maximum)
|
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