Dear John,
In the time (1970 to 1982) when Australia industry upgraded to the metric
system one of our key mottoes was:
Don't duel with dual.
Maybe this is relevant to ASHRAE. The ASHRAE experience of trying the dual
approach since the 1970s is further evidence that, for a metrication upgrade,
"metric conversion" does not work.
Cheers,
Pat Naughtin
Geelong, Australia
On 2011/01/11, at 11:13 , John M. Steele wrote:
> ASHRAE has a metric policy, but it is a rather weak one (at least compared
> to SAE). I found it on the web:
> http://www.ashrae.org/doclib/20060824_thesiguide.pdf
>
> Their policy seems to be mostly "dual" either side by side in a single
> document, or in standards and handbooks, to have an inch-pound edition and an
> SI edition. Their metric practice is in the same document. I only glanced
> at it, but their practice, when they actually practice metric, seems ok.
> Calculations can be done in either system (horrors!!!) but it should be
> defined, and generally supplemental data in the other system should be
> converted to appropriate accuracy.
>
> It looks like you could be either SI or inch-pound and be accepted by doing
> enough conversion. I don't know how they REALLY practice. I don't see this
> "side by side" thing as a pathway to metrication, I see it being a pathway to
> not knowing what they want to be when they grow up.
>
> From: Robert H. Bushnell <[email protected]>
> To: U.S. Metric Association <[email protected]>
> Sent: Mon, January 10, 2011 4:30:42 PM
> Subject: [USMA:49460] Btu
>
> 2011 Jan 10
> Some time ago somebody asked "who needs Btu?"
>
> One answer is ASHRAE for it's publication High Performance Buildings.
>
> I asked them to use SI. They said no. Their readers are builders
> and maintenance people who want to see inch-pound units.
> The units used are:
> ft
> in
> square footage
> R value
> kBtu
> kBtu/ft^2
> heating degree days
> degree F
> therm
> gallon
> kWh
> gallon
> W/ft^2
> MMBtu
> cfm
> cfm/ft^2
> acre
> lb
> kcf
> lb
> mile
> mpg
> ton (cooling)
>
> In the winter 2011 issue for the two plants in Ohio Honda lists
> GJ first with kBtu in paren as 5.13 GJ (4.872 kBtu).
>
>
> ASHRAE Journal allows some SI.
>
> Robert Bushnell
>
Pat Naughtin LCAMS
Author of the ebook, Metrication Leaders Guide, see
http://metricationmatters.com/MetricationLeadersGuideInfo.html
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