[Bldg-sim] Masonry Heater and LEED

[Karen Walkerman]

Hi Aaron,

Thanks for your response.  Wood is harvested on-site by the occupants.  My
project is very similar, and I think I will take the same approach.  You
might want to look into the CIR's because there was one from LEED 2.0 that
mentioned locally harvested wood for heat.  The ruling was in relation to
the renewable energy credit and indicated that credit can be taken for
renewable energy for any wood harvested from the site, or an adjacent site
with the same owner as long as there is a sustainable forestry plan.  Could
be worth an extra 7 points for you guys.

As far as how to model it - I'm using EnergyPlus these days so I have many
options for modeling the system.

--
Karen

On Fri, Mar 16, 2012 at 10:36 AM, Dahlstrom, Aaron
<ADahlstrom at in-posse.com>wrote:

> Karen – ****
>
> ** **
>
> Good question! I have a project right now using a wood stove.****
>
> ** **
>
> If it’s biomass, it technically isn’t “fossil fuel”, right?****
>
> ** **
>
> So, whether VRF (“electric”) OR biomass (“other”) is the predominant heat
> source, in both cases you’d be up against the right-hand column of Table
> G3.1.1A for your baseline … make sense?****
>
> ** **
>
> Additionally, are you actually modeling the “energy cost” of the masonry
> heater in the proposed case?****
>
> (If so, a whole host of questions follow. Energy rate? Acceptable per LEED
> to use biomass heaters in model? Mechanism for modeling in eQUEST?) If so,
> then I believe you would be attempting to show the energy cost difference
> between heating with wood (eg “Other” fuel source) and heating with an
> electric single-zone heat pump.****
>
> ** **
>
> On my job, there is a woodstove and a water source heatpump.****
>
> ** **
>
> However, the client has indicated that the use of the woodstove will be
> only occasional, so we are allowing the load to be carried by the
> water-to-water heat pump only in the proposed case, and the baseline is
> from the right-hand column of Table G3.1.1A.****
>
> ** **
>
> Additionally, they have 40+acres, and plan to harvest the wood on-site, so
> technically there is no cash paid for the woodfuel source … ie it would
> only be a savings in the model versus the displaced electric heat pump heat
> … so we feel we are conservative in neglecting it. Might be a different
> story if the client was purchasing their wood. Anyone ever do a calc of $ /
> BTU from dry hardwood versus natural gas versus heat pump heating?? ;)****
>
> ** **
>
> ** **
>
> *Aaron Dahlstrom , PE, LEED® AP*****
>
> *In P**o**sse* – A subsidiary of *AKF*| 1500 Walnut Street, Suite 1414,
> Philadelphia, PA 19102 ****
>
> d: 215-282-6753| m: 267-507-5470| In Posse: 215-282-6800| AKF:
> 215-735-7290****
>
> e: ADahlstrom at in-posse.com | in posse web: www.in-posse.com | akf web:
> www.akfgroup.com****
>
>  ****
>
>  ****
>
>  ****
>
> *From:* bldg-sim-bounces at lists.onebuilding.org [mailto:
> bldg-sim-bounces at lists.onebuilding.org] *On Behalf Of *Karen Walkerman
>
> *Sent:* Thursday, March 15, 2012 5:09 PM
> *To:* Jim Dirkes
> *Cc:* bldg-sim at lists.onebuilding.org
> *Subject:* Re: [Bldg-sim] Masonry Heater and LEED****
>
> ** **
>
> a gorgeous way to heat with wood.****
>
> ** **
>
> http://www.turtlerockheat.com/heaters.html ****
>
> On Thu, Mar 15, 2012 at 5:02 PM, Jim Dirkes <
> jim at buildingperformanceteam.com> wrote:****
>
> What is a masonry heater?****
>
>  ****
>
> *The Building Performance Team
> **James V. Dirkes II, P.E., BEMP , LEED AP
> *1631 Acacia Drive NW
> Grand Rapids, MI 49504
> 616 450 8653****
>
>  ****
>
> *From:* bldg-sim-bounces at lists.onebuilding.org [mailto:
> bldg-sim-bounces at lists.onebuilding.org] *On Behalf Of *Karen Walkerman
> *Sent:* Thursday, March 15, 2012 4:21 PM
> *To:* bldg-sim at lists.onebuilding.org
> *Subject:* [Bldg-sim] Masonry Heater and LEED****
>
>  ****
>
> Hi,****
>
>  ****
>
> I have a LEED project that is utilizing a VRV system to provide heating
> and cooling.  The building also has a masonry heater that the users will
> use often as a heat source and for cooking.  I'm completing a LEED model
> for this project and I'm not sure how to approach the baseline heating
> systems.  The building has a fully functional VRV system - this would lead
> to choosing System 4 - PSZ-HP.  However, the users will use the masonry
> heater for heat whenever they can.  This might lead to choosing System 3,
> and using a boiler.  Any thoughts or experience with similar projects?****
>
>  ****
>
> Thanks,****
>
>  ****
>
> --****
>
> Karen****
>
> ** **
>
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