ano said:The thermostats are HAI OmniStat2's. They do all that and more. The utility doesn't have any remote control plans, but they are testing where they send you an email with a 5 minute interval where you are to cut usage, and you get the email the day before. They are beta testing that plan.
No, the programming is all in the HAI panel, but the panel does know all the details of the OmniStat, for example when the AC is running. The program can then turn the OmniStat to Off, Cool, Auto, etc. or change the set points. The OmniStat can run programming either based on time of day, or alarm mode, but those are pretty basic. It does determine Stage 1 or 2 itself based on many criteria. It also does know the outside temperature, but I don't think it uses that in the decision process.Lou Apo said:The omnistat all by itself can run variable timed schedules (like 10 minutes on 50 minutes off if outside temp is 95 starting at noon and ending at 7), or do you mean omnipro in combo with omnistat?
ano said:No, the programming is all in the HAI panel, but the panel does know all the details of the OmniStat, for example when the AC is running. The program can then turn the OmniStat to Off, Cool, Auto, etc. or change the set points. The OmniStat can run programming either based on time of day, or alarm mode, but those are pretty basic. It does determine Stage 1 or 2 itself based on many criteria. It also does know the outside temperature, but I don't think it uses that in the decision process.
ano said:If I learned anything its that changing the temp a few degrees for a few hours will not save any money. For a few days, maybe, not a few hours.
Lou Apo said:Pool water around here gets into the mid and even upper 90's during the summer if you just let it sit there. You have to turn the water fall on at night to get some increased surface area and evaporative cooling to get it below 90. . . if your lucky.
I agree, you would need to dig a deep hole or have a closed top fully insulated gigantic holding tank to store the chilled water in these hot types of climates. It would bet the cost would go well over 10 grand.
There is no question that with two AC units going on stage 2 at times, pre-cooling generates high peak demand, but I care not since the utility only measures and counts peak demand during the high-rate 12 noon to 7 pm period.az1324 said:Yep. Now which day had a higher max hourly demand?
Thanks. Pretty interesting. In AZ people do cool pools with sprinklers, and pools have lots of mass.Aerodeo said:Hi all,
Long time lurker, first post...
Apologies if this is off-topic, but, since there's so much discussion on this thread about HVAC related energy consumption, I thought y'all might find this group at UC Davis interesting. They investigate many of the great ideas that have been tossed around on this thread, but one that sparked my response was that they did a project on using the pool as a heat sink. In this study, the pool didn't reach uncomfortable levels, but if it had they mentioned using fountains or sprinklers at night to promote evaporation to cool the pool. Anyhow, check it out if you're interested.