Converting KW/hr to amps

[Ingenieur]

[FONT=&quot][h=1]https://www.usgs.gov/faqs/how-are-f...s_science_products=0#qt-news_science_products
seldom floods without rain
4" / day may be ok
4" / hour may cause head loss rsising the river level

How are floods predicted?[/h][/FONT]
[FONT=&quot]Flood predictions require several types of data:

• The amount of rainfall occurring on a realtime basis.

[/FONT]

 

[gadfly56]

[FONT=&quot][h=1]https://www.usgs.gov/faqs/how-are-f...s_science_products=0#qt-news_science_products
seldom floods without rain
4" / day may be ok
4" / hour may cause head loss rsising the river level

How are floods predicted?[/h][/FONT]
[FONT=&quot]Flood predictions require several types of data:

• The amount of rainfall occurring on a realtime basis.

[/FONT]

You have moved the goal-post from the 100-year flood to flooding in general, regardless of severity. The topic you linked to is "Flooding" not "100-Year Floods". You fail to note that that is only one of four (4) factors to consider when trying to predict flooding in real-time. For the 100-year flood, the data used is stream flow.

 

[Ingenieur]

You have moved the goal-post from the 100-year flood to flooding in general, regardless of severity. The topic you linked to is "Flooding" not "100-Year Floods". You fail to note that that is only one of four (4) factors to consider when trying to predict flooding in real-time. For the 100-year flood, the data used is stream flow.

nothing has moved, they are inter-related
rainfall factors into both (as does snow melt)
that is why posted the link

https://water.usgs.gov/edu/100yearflood.html
Instead of the term "100-year flood" a hydrologist would rather describe this extreme hydrologic event as a flood having a 100-year recurrence interval. What this means is described in detail below, but a short explanation is that, according to historical data about rainfall and stream stage, the probability of Soandso River reaching a stage of 20 feet is once in 100 years. In other words, a flood of that magnitude has a 1 percent chance of happening in any year.


they use this data to calc river flow/rise and plot that on a map
the rain mag/duration (time of year, drought/dryness etc) determine river vol and flow and resultant headloss and rise

 

[ramsy]

I think fema has flood plain maps
https://msc.fema.gov/portal/search

Excellente'

 

[Besoeker]

this IS on topic
threads evolve

is T ~ V ???

See post #40.

 

[Besoeker]

I guess generator RPM is much closer to being on topic then flood data

Totally agree.
Threads evolve but but flood data on a thread that is about kWh..............now that's more than just a bit of a stretch.
I'm more than a little surprised that the mods let it go. Might be interesting to hear what they say, or maybe don't say, about it.

 

[Ingenieur]

See post #40.

????
nothing about T ~ displacement
????

 

[Besoeker]

????
nothing about T ~ displacement
????

Correct.

 

[kingpb]

Call Ring Power. They have engineers that can properly size it based on all the relevant criteria.

If you really want to make a splash and ensure you have it all covered, then you need to go with 3 x 50% units in an N+1 configuration, capable of operating in parallel. That way 1 unit can crap out and you can still handle worst case loading. The controls and electrical equipment should be capable of bumpless transfer in either direction. They also have weatherproof enclosures that can handle 165mph winds, which is what you will need. But, with money to burn, build a separate DEG building. Sounds like a fun project.

 

[drktmplr12]

build a separate DEG building

if you really want to spend someone else's money, do something that forces them to hire an architect. :lol:

 

[gadfly56]

I suspect in the end fuel will be the limiting factor. I’m not up on residential codes but I suspect best you can do is a pair of 1,000 gallon liquid propane tanks provided you can keep them 25 feet from property line. That should put you in the neighborhood of 3 weeks running time on a 30 KW, 1800 rpm, generator (assuming 50% loading).

...

You get more bounce per ounce with diesel fuel, assuming identical footprints for the storage. Propane is 91,502 BTU/gal and diesel is 139,000 BTU/gal.

 

[Ingenieur]

Correct.

so your response was incomplete
gotcha

 

[Besoeker]

so your response was incomplete
gotcha

It was an attempt to try to steer you back on topic which is not about internal combustion engines. That's not bickering. It is trying to uphold forum etiquette.
Wasted.

I'll probably be reproached by admin for this even when flood plains float on by.

 

[Fitzdrew516]

I was trying to read through all of these to make sure I wasn't repeating this as an answer already, but I got lost on all the rabbit trails. So if this has already been said, I apologize: I would call the utility if you're not going to meter the service. Sure the electric bill only gives you kwh and not peak demand, but that doesn't mean that information isn't available.
Maybe it's different in resi work (I don't do any of that), but any time I call a utility for peak demand information I get the right info. Sometimes it takes a while and 1000 phone transfers, and sometimes it takes 2 minutes, but I'd feel better with a real figure than a guess.

- Drew

 

[winnie]

Do they have an analog meter or a 'smart meter'?

If they have a 'smart meter' you can probably use that to log actual usage on a much more frequent basis than daily.

From example, from my meter I can get the times that the kWh value increments; still averaging over a pretty significant time period, but much tighter than over the course of an entire month.

-Jon

 

[K8MHZ]

Do they have an analog meter or a 'smart meter'?

If they have a 'smart meter' you can probably use that to log actual usage on a much more frequent basis than daily.

From example, from my meter I can get the times that the kWh value increments; still averaging over a pretty significant time period, but much tighter than over the course of an entire month.

-Jon

My smart meter 'dashboard' on the Internet allows me to look at usage by the hour.

 

[gadfly56]

My smart meter 'dashboard' on the Internet allows me to look at usage by the hour.

Probably still not fine enough. You need to know if the generator is "stiff" enough to make it through the first few cycles of the largest inductive load or combinations of load.

 

[kwired]

My smart meter 'dashboard' on the Internet allows me to look at usage by the hour.

How far back before it turns into 4 hour, 12, 24 hour blocks of data only?

Will it show a peak (high and/or low) within that time period?

 

[K8MHZ]

How far back before it turns into 4 hour, 12, 24 hour blocks of data only?

Will it show a peak (high and/or low) within that time period?

I kept clicking the back arrow and went back 2 months and it still showed hourly. You can see peak hourly use per day in each view. I tried to do a screen shot. But didn't have any luck.

 

[gadfly56]

I kept clicking the back arrow and went back 2 months and it still showed hourly. You can see peak hourly use per day in each view. I tried to do a screen shot. But didn't have any luck.

Use the "Snip" tool, save it as a PNG or JPG to your computer, then upload it using the image feature:



If the snip is too small, use the "zoom" tool to enlarge the image on your screen and do the snip again.