Would wetting outdoor cooling fins improve the efficiency of an AC unit? The unit in question is a central AC unit, but presumably the principle would remain the same for window units. AC cooling fins aid in heat exchange by exploiting their large surface area. Would wetting the fins to...

1. A 100w light bulb produces 8w of light What happens to the other 92w?

I have a question concerning the efficiency of skylights other than for some extra light in some rooms that would ordinarily be too dark and/or for aesthetic value. Any of the skylights I've seen used in main living areas seem to serve most efficiently as heaters... in the summer. Therefore, I...

I'm wondering if anyone can speak in generalities about lighting efficiency. My recollection is that High Pressure Sodium is the highest efficiency, with the most photons in the visible spectra per watt. Where do flourescents, CFL, metal halide, etc. fit in? Let's ignore spectra of the...

How to improve and increase production in simple steps?