Single compressors are used for both the freezer and refrigerator. Normally they pump cool air into the freezer and then into the refrigerator portion. This causes problems usually when your loading groceries and both doors are open. This causes moist air from the freezer to be pumped into the refrigerator at high rates. This can cause freezer burn to happen more quickly and can cause the refrigerator side to pick up too much moisture causing spoilage.
Now a double compressor is just what it sounds like, one compressor for each compartment. They work less and much more efficiently to keep the proper temperatures and moisture levels.
Double door is the best.
difference between single layer and double winding
screw thread are single threads which means they are not double
No
in programming, single quotes are for characters, and double quotes are for string, but in php, javascript, html, css i don't see any difference between the two.
the difference is that DNA is a double helix and RNA is a single chain
single destroys the brain and double destroys the spinal cord or central nervous system
A twin bedroom has two single beds, a double bedroom has a double bed!
There isn't an immediate difference in comfort between a single and double pillow top, but you are able to flip double pillow top mattresses. This can make it more comfortable in the long run and may help it last longer. Double pillow tops do tend to be more expensive than single ones.
clarinet is a single reed instrument and the oboe is a double reed, that is really the only difference
One cutting edge vs two
See Related Links below