Text Size AAA Bookmark and Share

Search

Listed below are all documents and RMI.org site pages related to this topic.
56 Items

First Previous 1 2 3 4 5  ... Next Last 

U.S. industry energy-saving potential, 2010–2050

http://www.rmi.org/RFGraph-US_industry_energy_saving_potential
Increased adoption of energy efficient technologies as well as cogeneration and waste heat recovery systems will reduce energy use by an additional 4.7 quadrillion BTUs from business-as-usual. These and other changes (energy changes due fuel switching or transformation in other sectors) can reduce projected primary energy use by 27% in 2050.

 

Energy flow through a typical internal combustion engine drivetrain

http://www.rmi.org/RFGraph-Energy_flow_through_a_typical_internal_combustion_engine_drivetrain
This chart shows why less than 0.5% of the energy in a typical modern auto’s fuel actually moves the driver, and only 5–6% moves the auto. An auto's weight is responsible for more than two-thirds of the energy needed to move it. All told, 86% of the fuel energy never reaches the wheels.

 

Vehicle retail price and curb weight, new U.S. car sales, model year 2010

http://www.rmi.org/RFGraph-Vehicle_retail_price_curb_weight_new_cars
Lightweight autos needn’t cost more. The MY 2010 U.S. new-car fleet shows little or no correlation between lighter weight and higher prices.

 

Sales-weighted curb mass and density of new autos sold in U.S., 1986–2009

http://www.rmi.org/RFGraph-Saleweighted_curb_mass_and_density_of_new_autos
Autos in the U.S. have increased in weight by 16% since 1986 to an average of 3,533 lb. in 2009. Cars have also gotten denser, rising 14%—from 28 to 32 lb per interior cubic foot. Yet since 1986, U.S. adults got only 8% heavier.

 

Tractive load formulas

http://www.rmi.org/RFGraph-tractive_load_formulas
Powertrain efficiency from tank to wheels can't exceed 1.0, and is around 0.17 in a typical modern car or 0.35 in a good "full hybrid," but the energy needed to move the car can be reduced severalfold by making it lighter and more slippery.

 

Horsepower to overcome aerodynamic drag

http://www.rmi.org/RFGraph-Horsepower_overcome_aerodynamic_drag
Each 10% decrease in an auto’s aerodynamic drag can raise its fuel economy by very roughly 3%.

 

2050 installed capacity by case

http://www.rmi.org/RFGraph-2050_installed_capacity_by_case
The required generating capacity and its breakdown are very different in each of Rocky Mountain Institute’s four scenarios for the future U.S. electricity system (detailed here).

 

Drag coefficient and retail price, new U.S. car sales model year 2010

http://www.rmi.org/RFGraph-Drag_coefficient_and_retail_price
As with lightweight autos, more aerodynamic autos needn’t cost more. A survey of currently available autos shows that lower drag vehicles, as a whole, cost no more than less aerodynamic ones.

 

Power to accelerate 0–60 mph in 9 seconds

http://www.rmi.org/RFGraph-Power_to_accelerate_0_60_in_9_seconds
Every 10% decrease in an auto’s weight can raise fuel economy by roughly 6%.

 

2050 generation by case

http://www.rmi.org/RFGraph-2050_generation_by_case
Each of Rocky Mountain Institute’s four scenarios for the future U.S. electricity system (detailed here) will have a very different electricity generation mix.

 

First Previous 1 2 3 4 5  ... Next Last 
 
Show Subscribe