If the density of 304 plate is 0.29lbs/in^3, why do supplier have differing densities listed for differnt thicknesses? I.E. one supplier has 1/4" plate weight listed as 11.16 lbs/ft^2, and 1" listed as 42.67 lbs/ft^2. Would not 1" be 4 times 1/4"? If .29lbs/in^3 wouldn't 1/4" be 10.44 lbs/ft^2?
Gtsim
The main issue with part load conditions is the ability of the absorption machine to keep the concentrations correct in Lithium-Bromide chillers. Most of the manufacturers will not tell you there is an issue with part loading, but they will hint at it. Much in the same way as I have...
gtsim,
You are correct on the higher humidity reducing both the fogging and chilling system attractiveness in high humidity areas of the world. I went back and took a look at all of the numbers on operating hours closing in on 300,000 hours of operation without detrimental blade or unit...
gtsim,
Why bother with wet compression? Good question. Since wet compression works basically by evaporating water in the compressor as long as the inlet temperature is above 45F your gain in power is constant. For Frame machines a good rule of thumb is that for every 1 GPM of water put into...
gtsim
If the effectiveness is .95 then the only benifit from fogging would be its very low airside pressure loss. Typically fogging is less than 0.1 inwc, with wetted media at .95 you'll be at least 0.4 inwc. On a retro-fit fogging is normally lower cost than evaporative media. If elevated...
If you check out the difference power conferences (PowerGen, IGTI, American Electric Power) you will see a lot of presentations on fogging and wet compression, not so much on chilling as it is not as controversial. On the subject of wet compression, up to 3% of ISO flow rate has been introduced...
Gtsim,
The typical blade materials in the compressors are not made of high carbon materials, thus they are not going to be affected by the demin-water. If the droplets are kept small enough and water removed from the duct as it collects on surfaces fogging or wet compression can be applied...
I’ve got a few things to add to the discussion, Raw water or Demin-water is used in evaporator coolers. If demin-water is used a stainless steel sump is typically used. Then the only issue is if carry over occurs the duct work must have a good epoxy coating. As for Fogging Demin-water must...
