cwerdna
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Re: Why do we still confuse KW and KWH?

Mon Aug 26, 2019 11:12 pm

smkettner wrote:
Mon Aug 26, 2019 10:00 pm
No one is actually confused.
...
Simple slip of the keyboard makes way too big a deal of it. For those that are always careful and deliberate to get this right perfectly every time I commend you. For the rest... let it go.
Sometimes, it's not a slip of the keyboard. Sometimes, a person keeps getting it wrong over and over. This guy is an example: http://mynissanleaf.com/viewtopic.php?p=389319#p389319. He was not just making typos. He didn't know what he was talking about. Read his further replies in that thread like
" A 40w light bulb is not 40w (that would mean it burns out after 1hr) its a 40 wh light bulb"
" A 3000w genny is actually a 3000wh genny"
"a 40w bulb is not 40watts. that would mean the bulb can only work for 1 hour. your average "cheap" incandescent 40w bulb is actually a 60,000w bulb (40watts times estimated lifespan of 1500 hours)

the RATE it consumes power is 40 watts per hour." UGH!

How about Reeler that I referred to at viewtopic.php?p=564743#p564743? What's surprising and scary is his background and "experience" with EVs: viewtopic.php?p=565245#p565245.

There are a few folks who fairly often get it wrong, say 50% of the time, not 80 to 100% of the time. For them, I think it's a lack of understanding and not a slip up either.

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SageBrush
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Re: Why do we still confuse KW and KWH?

Tue Aug 27, 2019 3:36 am

LeftieBiker wrote:
Mon Aug 26, 2019 9:04 pm
Lets say someone wants to know how much it will cost to run their new fangled Btu burner. They know it is 35k Btu.

Next step ?
Flow rate of whatever fuel is used
Indeed. For you it is 35k Btu. :lol:
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LeftieBiker
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Re: Why do we still confuse KW and KWH?

Tue Aug 27, 2019 4:10 am

SageBrush wrote:
Tue Aug 27, 2019 3:36 am
LeftieBiker wrote:
Mon Aug 26, 2019 9:04 pm
Lets say someone wants to know how much it will cost to run their new fangled Btu burner. They know it is 35k Btu.

Next step ?
Flow rate of whatever fuel is used
Indeed. For you it is 35k Btu. :lol:
You may want to double-check yourself before you ROTFL. Two oil furnaces can have the same flow rate and both different efficiencies and thus different fuel costs. They can even have two different BTU ratings. I don't see how that couldn't also be true of gas furnaces with differing efficiencies.
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DaveinOlyWA
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Re: Why do we still confuse KW and KWH?

Tue Aug 27, 2019 6:37 am

cwerdna wrote:
Sun Aug 25, 2019 7:14 pm
martyscholes wrote:
Sun Aug 25, 2019 5:42 pm
I just read a thread where a poster conflated KW and KWH. That seems to be a regular mistake, despite EVs being more common than ever. What does it take to stop the confusion? The two really are a different as horsepower and a gallon of gasoline.
...
What does it take to get this right? Am I just too pedantic?
It drives me nuts. It happens here, on other EV boards and on various EV FB groups. No on the last question.

I usually step in to correct or to seek clarification. Unfortunately, sometimes (often ignorant) folks will attack me for it. :roll:

People got really pissed off and annoyed at the cluster#$$% I pointed to at https://mynissanleaf.com/viewtopic.php?p=564743#p564743. What's scary and surprising is what Randy pointed out at https://mynissanleaf.com/viewtopic.php?p=565245#p565245. :shock:
+1 but that isn't even the most frustrating part. Correct someone and they become VERY defensive with all kinds of BS reasons as to why its not important, that everyone knows what you mean, You just being an Ahole, etc.
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DaveinOlyWA
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Re: Why do we still confuse KW and KWH?

Tue Aug 27, 2019 6:40 am

Flyct wrote:
Sun Aug 25, 2019 9:48 pm
cwerdna wrote:
Sun Aug 25, 2019 7:14 pm
martyscholes wrote:
Sun Aug 25, 2019 5:42 pm
I just read a thread where a poster conflated KW and KWH. That seems to be a regular mistake, despite EVs being more common than ever. What does it take to stop the confusion? The two really are a different as horsepower and a gallon of gasoline.
...
What does it take to get this right? Am I just too pedantic?
It drives me nuts. It happens here, on other EV boards and on various EV FB groups. No on the last question.

I usually step in to correct or to seek clarification. Unfortunately, sometimes (often ignorant) folks will attack me for it. :roll:

People got really pissed off and annoyed at the cluster#$$% I pointed to at https://mynissanleaf.com/viewtopic.php?p=564743#p564743. What's scary and surprising is what Randy pointed out at https://mynissanleaf.com/viewtopic.php?p=565245#p565245. :shock:
Your ;( overreacting. Or is it you’re overreacting? Calling folks ignorant doesn’t help.
This is another example of how language is perceived. What else would you call them but ignorant when the error is pointed out and they still refuse to correct their mistake? They simply do not know any better.

Problem is society equates ignorant and stupid as synonyms which is far far far from correct.
2011 SL; 44,598 miles. 2013 S; 44,840 miles.2016 S30 deceased. 29,413 miles. 2018 S40; 15,000 miles, 478 GIDs, 37.0 kwh 109.81 Ahr , SOH 94.61, Hx 120.15
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EVDRIVER
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Re: Why do we still confuse KW and KWH?

Tue Aug 27, 2019 7:20 am

Let's not even start on 110/220V.

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Re: Why do we still confuse KW and KWH?

Tue Aug 27, 2019 7:32 am

At least we're not going to get into motor oil arguments on an EV forum.
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powersurge
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Re: Why do we still confuse KW and KWH?

Tue Aug 27, 2019 7:35 am

This issue is really one of non-importance... Someone who uses the wrong terminology is either unaware or uninterested in the subtle differences. For example, how many people use the term of acceleration as an increase speed (in meters per second.. per second)?

If you correct a poster's mistake, you either make him feel demeaned and apologetic, or are wasting your keyboard strokes because they couldn't care less.. Some people are on the wavelength of my "windy, turny, thingy is broken". I actually asked a person last week "how is your gas mileage? How much fuel do you use?". Their response was.. "Depends on how far I drive." That was the end of the conversation.

Since this is a public forum, I think that technophiles should let all posts lay as they may, and write instructional messages only when the poster asks a question.

Although terms may have importance in scientific circles, the communication of ideas on this site is not affected if someone talks about having a "40KW battery", or like to plug their level II "charger" into the car. After all, we are all here to share our amazing experiences and news updates of driving a Nissan Leaf--- By joining this site, we are not signing up to be given scientific courses....

martyscholes
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Re: Why do we still confuse KW and KWH?

Tue Aug 27, 2019 8:31 am

I am the OP. This has been a good discussion. I took away a few things from the discussion so far.
  • I used the wrong casing for hour, which is lowercase h, not capital H
  • Communicating the right things matters, at least a little
  • But it is not the end of the world if people confuse KW and KWh
  • Correcting people should be done gently since people generally are not receptive
  • KW does not intuitively sound like a rate unit (i.e. KW does not sound like it has time in the divisor), leading to confusion

smkettner
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Re: Why do we still confuse KW and KWH?

Tue Aug 27, 2019 11:05 am

EVDRIVER wrote:
Tue Aug 27, 2019 7:20 am
Let's not even start on 110/220V.
Yes lets go 3-phase on this ;)

May as well get into power factor also....
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