Efficiency


#1

What does efficiency affect? The default in Mine is 70% my root depth is 6” crop coefficient at 75%


#2

#3

Thanks @Kubisuro. The only way to know your efficiency is to do a catch cup test? I was thinking about increasing mine about 5% or 10% until I do a catch cup I just didn’t know if it was going to affect that zone run time.


#4

Seems like a pretty small part of the equation for flex daily. I don’t think it’s worth your time going with anything but defaults for your sprinkler heads unless you’ve strong suspicions it is adversely impacting your vegetation. I’d leave it alone.


#5

Ok cool tha zone is doing really good with the flex daily I am dialing the second zone right now but it seems that the run time for my second zone is way less than the first zone 3hr zone 2 54m the only difference is the slope. First zone is slight zone 2 is flat.


#6

Efficiency makes up for non-uniform coverage of your nozzles. So, if your schedule would to irrigate for 10 minutes with 100% efficiency, but you have 70% efficiency defined, I believe it would run for just over 14 minutes (10 min / 0.7) to compensate.


#7

thanks @azdavidr. this is why i love my rachio because the great features we get to optimize each zone and the awesome community.


#8

In irrigation, 100 percent efficiency is impossible to achieve. I stick with default numbers. But if your system is crap drop your efficiency value. The majority of all commercial and residential systems is 50 percent distribution uniformity.


#9

Yea I didn’t touch the efficiency I left it as a default I just wanted to know if it was going to do any affect on my scheduled or watering frequency.


#10

Same here.


#11

Could you argue that drip irrigation is 100% efficiency?


#12

Like all types of irrigation, drip is not 100 percent efficient either. The Irrigation Association gives drip a 80-90 percent efficiency rating. It really comes down to design, installation, scheduling and maintenance. Most irrigation systems fall in the 50 percent range. Here in Oklahoma, I see a lot of runoff with drip systems because run times are too long. The drip installations in downtown Oklahoma City have been a disaster because of incompetence.


#13

Go here: https://support.rachio.com/hc/en-us/articles/115010542148-What-are-Advanced-Zone-Settings-

Scroll about half-way down to Efficiency (DU). Lower = more run time