1. Introduction to Energy Terms & Conversions Flashcards
Energy
the ability to do work; best understood as a set of interconnected systems ; units: Joules (J); Watt-hours (Wh); tons of oil equivalent (t.o.e.), barrels of oil, British thermal units (Btu) or calories (cal)
Energy Services
what energy is used for upon reaching the final consumer; i.e. hot showers, cold beer, lit rooms
System
consist of stocks, flows, and feedback loops; a model with rules for integration that allow it to be consistent and useful. A basic open system will encompass inputs, internal transformations and processes, and outputs
Systems Thinking
distinct from marginal analysis, which simplifies relationships to a few variables, while holding all other variables constant. Systems thinking is dynamic, global, all variables can change, there are many actors and it is best used for complex interactions.
Root Cause
a part of system dynamics; deeper relations and motivations that cause certain observations to occur
Leverage point
a part of system dynamics; where small efforts in one part of the system can create major changes
Constraint
supply constraints could include scarcity, the simple lack of primary inputs or supply of resources (i.e. peak oil and resource depletion), but could also include a lack of capital and infrastructure; demand constraints include demand scarcity, which means that the resources and infrastructure may be available, but consumers simply fail to have the budgetary allocation to pull more throughputs through the system
Sustainability
the endurance of systems and processes; tries to reconcile innovation and depletion
Innovation
invention and creativity compelled by constraints that people use to create additional advantage for them in the form of reduced costs or increased profits
Depletion
an economic behavior whereby we minimize costs first, but that uses up a scarce opportunity (of resources, capacity or value) that may not necessarily be replaced or renewed
Power
the rate at which energy is physically transformed; relationship between energy & power -> E = P*t
First law of thermodynamics
all energy that enters a closed system must remain in that system as energy, heat or work produced; the energy input must create either the desired work (useful energy) or be wasted (energy loss), which is normally in the form of heat
Auction
rules by which trade or exchange happens within a market
Clearing price
The most common form of auction is the one where bidders continue to bid prices until they are no longer willing to go higher, and then the winner is the one who bid the highest price and that bid becomes the clearing price that they pay.
Energy transformations
energy transforms through the supply chain through exploration, production, preparation, further processing/purification/conversion, distribution, utilization, and recovery (destruction, decontamination);