[Equest-users] Thermal Mass Wall and R-Value

[Karen Walkerman]

The best thing to do is model the actual wall construction, not just an
equivalent R-value, then you will get both the thermal resistive and the
mass effect properties in the model.

--
Karen

On Thu, Apr 22, 2010 at 12:30 PM, Rob Hudson <rdh4176 at gmail.com> wrote:

> That is the answer i was expecting to here.  thanks for your input
>
>
> On Thu, Apr 22, 2010 at 12:27 PM, Bruce Easterbrook <bruce5 at bellnet.ca>wrote:
>
>>  That doesn't sound right.  Poured concrete has an R-value around
>> 0.08/inch.  When "effective" is used commercially it normally is a hocus
>> pocus addition for the mass effect but shouldn't be much more than 10%.
>> eQuest would calculate it as a lag effect based on the mass, so a steady
>> state value would be most appropriate.
>> Bruce Easterbrook
>>
>>
>> On 22/04/2010 10:38 AM, Rob Hudson wrote:
>>
>> When creating a model, i noticed that the R-value of the concrete i am
>> using is the "effective" R-value, rated at 22.  Should i use this or should
>> i ask the concrete manufacturer for a steady-state R-value which will be
>> much more accurate based on the materials?
>>
>> --
>> Rob Hudson
>>
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>
>
> --
> Rob Hudson
>
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