Could someone please explain and/or correct me?
These are the facts/physics as I understand them. They're based on what I learned in classes, employee training when I worked at The Gap and Chess King, reading Consumer Reports back when they supplied technical material, the expertise of fellow AW.org members, and my own experience.
1. To go from a pile of dirty laundry to a pile of clean, dry clothes ready to fold/hang up, most of the ENERGY (not water!) savings comes from higher final spin speeds that allow the dryer to run for shorter times to dry clothes. IIRC, this is more important than everything else combined.
2. Sebum/skin oil does not dissolve below 85-90F... or is it higher?
3. A given detergent (powder or liquid) needs a given temp to dissolve fully into the wash water.
4. I have NEVER gotten olive oil out of clothing in washed in tap cold water. I repeat...NEVER.
5. Most shrinkage of clothing is a result of dryer temps, not wash temps, regardless of how hot the wash water might be.
6. The energy cost of heating water for a hot wash an old fashioned TL is a good bit less than the difference in energy used to dry a load of clothes spun at 1200 as opposed to 700rpm final spin. IIRC, this is true regardless of how the water is heated or whether the dryer is gas or electric.
I have extremely oily skin and sweat like a pig so removal of said oil and sweat is my main concern regarding laundry. Apologies if I'm a bit OCD about it.
Could somebody please tell me what I have wrong or what factors might mitigate any of the above? Have I overlooked any exceptions?
Thanks,
Jim [this post was last edited: 10/23/2015-15:29]