[Bldg-sim] Comfort calculation (globe temperature)

[varun kulkarni]

Alright,
I'll try to float my boat this way.
Thanks a lot :)

On Thu, Oct 6, 2011 at 1:22 PM, Anne Juran <juran at summerconsultants.com>wrote:

>  Are you able to claim that the operative temperature equals the air
> temperature based on the 4 criteria listed in Appendix C?  All my LEED
> projects have met those criteria and GBCI accepted it.  Don’t know what to
> tell you, though, if the criteria do not apply … sorry.****
>
> ** **
>
> ** **
>
> *From:* bldg-sim-bounces at lists.onebuilding.org [mailto:
> bldg-sim-bounces at lists.onebuilding.org] *On Behalf Of *varun kulkarni
> *Sent:* Thursday, October 06, 2011 11:18 AM
> *To:* Abushakra, Bass
> *Cc:* bldg-sim at lists.onebuilding.org
>
> *Subject:* Re: [Bldg-sim] Comfort calculation (globe temperature)****
>
>   ** **
>
> Right,****
>
> Because if you see the formula for MRT, as the air velocity approaches to
> zero, MRT gets closer to globe temperature.****
>
> So MRT is equal to globe temperature, but only with zero air movement.****
>
>  ****
>
> I am still not able to figure out a way to document the MRT calculations as
> there is no way I would be able to measure the actual globe temperature.**
> **
>
> How am I suppose to show the PMV/PPD calculations and operative temperature
> calculations in LEED documentations ?****
>
> On Thu, Oct 6, 2011 at 11:11 AM, Abushakra, Bass <abushakr at msoe.edu>
> wrote:****
>
> Yes, MRT needs Globe Temperature.****
>
> Globe temperature requires a Globe Thermometer.  Radio Shack used to carry
> them.****
>
> There are no tables that could give you a Globe Temperature, because the
> reading depends on the specific space you’re studying.****
>
>  ****
>
> Bass****
>
>  ****
>
>  ****
>
> Bass Abushakra, Ph.D., Associate Professor****
>
> Technical Specialty Head, Building Mechanical Systems****
>
> Advisor, ASHRAE Student Branch****
>
> Civil and Architectural Engineering and Construction Management Department
> ****
>
> Milwaukee School of Engineering****
>
> 1025 N. Broadway, CC-41****
>
> Milwaukee, WI 53202****
>
> Tel: 414-277-4551****
>
> Fax: 414-277-7415****
>
>  ****
>
>  ****
>
>  ****
>
> *From:* bldg-sim-bounces at lists.onebuilding.org [mailto:
> bldg-sim-bounces at lists.onebuilding.org] *On Behalf Of *Larry Degelman
> *Sent:* Thursday, October 06, 2011 9:34 AM
> *To:* 'varun kulkarni'; bldg-sim at lists.onebuilding.org
> *Subject:* Re: [Bldg-sim] Comfort calculation (globe temperature)****
>
>  ****
>
> I never knew that the MRT calculation would require Globe Temp.  My
> understanding of this is that the Globe Temperature is actually a function
> of Air Temp, MRT and the convection (air speed effects.)  The MRT is
> calculable from the temperature of the surrounding surfaces.  If the Op Temp
> calculation includes air temp, MRT, RH, and air speed, then there is no need
> to ever know Globe Temp.   Opinions here, maybe not facts!****
>
>  ****
>
> Regards,****
>
>  ****
>
> *===========================*****
>
> *Larry O. Degelman, PE, HBDP/BEMP*****
>
> *Professor Emeritus of Architecture*****
>
> *Texas A&M University*****
>
> *ldegelman at suddenlink.net*****
>
> *==========================*****
>
>  ****
>
> *From:* bldg-sim-bounces at lists.onebuilding.org [mailto:
> bldg-sim-bounces at lists.onebuilding.org] *On Behalf Of *varun kulkarni
> *Sent:* Thursday, October 06, 2011 8:18 AM
> *To:* bldg-sim at lists.onebuilding.org
> *Subject:* [Bldg-sim] Comfort calculation (globe temperature)****
>
>  ****
>
> Hello all,****
>
>  ****
>
> For EQc7.1 in LEED NC 2009, I need to provide detailed calculations for
> "operative temperature". ****
>
> ASHRAE 55 appendix C gives you the formula to calculate operative
> temperature, but that requires mean radiant temperature. And the formula for
> "mean radiant temperature" requires globe temperature.****
>
> I am trying to find a graph/chart/table from which I can obtain the "globe
> temperature" or do I even need to find globe temperature ?****
>
> Any insights, suggestions would be appreciated.
>
> -- ****
>
> Thanks and Best Regards, ****
>
> Sincerely,****
>
>  ****
>
> Varun Kulkarni  ****
>
> Note: Please do not print, unless required.****
>
>  ****
>
>  ****
>
>  ****
>
>
>
>
> -- ****
>
> Thanks and Best Regards,****
>
>  ****
>
>  ****
>
>  ****
>
> Sincerely,****
>
>  ****
>
> Varun Kulkarni ****
>
>  ****
>
> Note: Please do not print, unless required.****
>
>  ****
>
>  ****
>
> ** **
>



-- 
Thanks and Best Regards,



Sincerely,

Varun Kulkarni

Note: Please do not print, unless required.
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