# energy

## Strain Energy Derivation

Dear Sirs,

I'm trying to derive an strain energy in a small volume 2a x 2b x 2t.

I can derive "The rest terms are ommited" by myself .

By the way, I can't derive the DT2 term in the 2nd row of the figure.

Thanks,

Jin Kim

## Mechanism To Increase Energy Efficiency.

View the figure attached. It is about using Cam for increase
energy efficiency. Cam are generally used to open and close valve of IC
Engine. I am going to show you another use. Left side initial position.
Right side final position. Redius of cam continuously decrease.Sliding
weight (MG) applied on Cam. With the help of rope weight(MG*Cos(b)) is
fixed with cam. We consider b as 45. So cos 45=.70. This fixed weight
should be 0.70 MG. Which balance the sliding weight applied on cam in
tengential direction. As sliding weight come down the fixed weight go
up. But the twist is the redius of cam decrease nominal continuously.
So sliding weight come down little bit and fixed weight go up much
more. We consider sliding weight come dowm H2 height and fixed weight

## Stationary hydraulic or spring force can help to rotate pulley.Except pulley all other part in figure are stationary.

Stationary hydraulic or spring force can help to rotate pulley.Except pulley all other part in figure are stationary.

## Schwarzenegger, Obama, and Energy-related position at the White House

July 13, 2008, 7:31 pm

Schwarzenegger Says He Would Accept Obama Appointment

Melanie Trottman reports on the presidential race.

Guests on the Sunday newsmaker shows, including California Gov. Arnold Schwarzenegger and John McCain adviser Carly Fiorina, spotlighted energy and the economy and paid tribute to former White House press secretary Tony Snow.

## Experts say China’s wind energy could grow 1667% by 2020

Experts say China’s wind energy could grow 1667% by 2020