1 / 5

# Microwave Efficiency - PowerPoint PPT Presentation

Microwave Efficiency. Larry Moore ME 340 Fall 2010. Goal. Find the best place to put your food in the microwave for optimal energy transfer. Method.

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

## PowerPoint Slideshow about ' Microwave Efficiency' - vevay

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

### Microwave Efficiency

Larry Moore

ME 340

Fall 2010

Find the best place to put your food in the microwave for optimal energy transfer

Method

Use a “Kill-A-Watt” meter to measure power to the microwave and a thermocouple to measure water temperature increase, then calculate the efficiency

Assumptions

Assume only microwave energy transfer, ignore any other forms of heat transfer

• The emitter is in the back right side of the microwave unit. Objects placed in front of the emitter heat the fastest.

• An object placed in front of the emitter will absorb a great deal of the microwave energy and prevent other objects from heating.

• For the above reasons, the turntable promotes even heating by effectively spreading the microwave energy across the items being heated.

• The microwave is more efficient when there is more surface area to absorb the radiation.

• Interestingly, the microwave requires the same power to run no matter how much is in it

• When the microwave is empty, most of the microwave energy is absorbed by the glass plate

• Special thanks to Kevin Cole for the equipment