WEBVTT

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SPEAKER: I'm
delighted to introduce

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Isabel Varela to discuss some of
the research and learning we're

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trying to do at HEET.

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ISABEL VARELA: I have multiple.

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[APPLAUSE]

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Thank you.

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So I'm Isabel with HEET, and I
will be sharing with you today

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how HEET is trying to learn
from these geothermal energy

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networks.

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So learning from geothermal
energy networks and--

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thank you.

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HEET has a research project
that is called Learning

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From the Ground Up, and it is
funded by Massachusetts Clean

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Energy Center.

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And the goal of this
project is to evaluate

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the potential of these
geothermal networks

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in Massachusetts and, mainly,
to really increase understanding

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of this technology and to
optimize it, as much as we can.

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We want to share all the
learnings with the stakeholders

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and make that knowledge
public, open source.

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Here is a brief organizational
chart in bubbles.

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I'm not going to go
into detail, but I just

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want to share, what are the
different organizations that

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are collaborating with us?

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So we have this great consortium
where we have NREL, that Juliet

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will be speaking today.

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We have LBNL.

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We have Boston University,
Nathan Phillips.

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He was a speaker yesterday,
Jonathan Buonocore, as well.

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They're part of that
LeGUp research group.

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We're also collaborating
with Buro Happold.

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And, of course, we
partner with our utilities

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that are doing these systems
and these installations

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here in Massachusetts.

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So how is this
project organized?

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At the core of this
project, the project

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is anchored on the data
demonstration projects

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that are here in Massachusetts.

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And then we're looking
at core modeling,

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the impacts of
these installations,

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and a scaling of these systems.

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So we'll go a little bit
into these in more detail.

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So in Massachusetts, there
are different pilot projects

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or demonstration projects.

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As we heard from Eric Bosworth,
there's the Framingham project.

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So that's the one that is
installed already, already

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in the commissioning stage.

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Then there's Franklin
Field, National Grid.

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Just is right now in the
design phase of that,

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and they will be drilling
their test borehole this month.

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And we also have the extension,
the second loop in Framingham,

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and HEET has collaborated
with Eversource

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and got a grant from
the Department of Energy

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to do the design
phase, and now we

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were selected for
the construction

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phase of that project.

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So we're very excited to
have that moving forward.

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So what are the things that
HEET is doing as part of this?

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So the data acquisition here
is focused on temperature data,

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acquiring temperature
data down the boreholes.

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So this is fiber
optic cables that

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are being installed in
a subset of boreholes.

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So there are 90 boreholes
in the Framingham project,

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and 15 of those have
fiber optic cable

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to measure temperature at every
location down the borehole.

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And this is temperature
that is measured constantly,

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and the idea is that we
can analyze this data

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with the variations that we see
in the days, with the seasons,

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and with the years.

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So, really, when
we have one year

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of data, when that system has
been performed for one year

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and we get that sinusoidal
curves that Connor showed

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earlier today, that's when
we want to really leverage

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this data, and how
do we think it's

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going to keep on performing
throughout the years?

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So with-- this, we can
monitor the systems

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and see if there's
any change that

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needs to be made so that
it functions optimally

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within the temperature range
that the heat pumps work best.

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The modeling part-- so we have
two groups, LBNL and NREL,

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that are focusing on developing
these core modeling tools.

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So LBNL has focused on
developing a full physics

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model that is more
complicated, runs

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in Modelica, software that are
less accessible, if you will.

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And then NREL has been working
on reduced-order models, tools.

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And I won't steal your thunder.

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Juliet will be talking
more about that.

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That will run quicker,
and you can still

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get the behavior of the
system with these models.

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And the idea is that they're
going to be open source as well.

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And this is another
slide from that model.

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And I'll just briefly
mention that, for example,

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one of the outcomes that you
can get is that you have this.

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In the horizontal line,
you have the buildings

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going along that loop.

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And then in the
summer-- for example,

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as you go from
building to building

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in that ambient
temperature loop,

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you're getting hotter and hotter
until you reach the borehole,

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and then you cool
down and then you go

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around the loop hotter, hotter.

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And then you reach the
borehole, and you go down.

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So this is one of the advantages
of having different borefields,

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as Brian Urlaub was
mentioning earlier today.

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So we have that in this
Framingham project.

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And then we have
a similar example

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when we are in the winter.

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This project is
looking at, what are

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the impacts of these geothermal
networks in a more holistic way?

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We're looking also at ecology,
at the impacts on health,

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the impacts on equity.

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So this is a work that
is being done right now,

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and Angie here is the
lead for that in HEET.

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Impacts on emissions,
impacts on the electric grid.

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One of the things
that we want to do

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is to have measurements at
these demonstration projects

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to quantify the impact
on the electric grid.

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So Zeyneb mentioned, what is
the impact of ground-source heat

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pumps with this ORNL
study if you had them

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at a national scale?

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And here, we want to quantify
it for a particular project,

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these demonstration projects
that we have in Massachusetts.

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And we also want to know,
what is the impact of costs?

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One of the things that we're
working with Buro Happold

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and NREL is to make this survey
about costs, costs of drilling,

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costs of the construction,
of the main loop,

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and costs also of
the retrofit-- so

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the three different phases that
were discussed earlier today.

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And all of this, the
idea is to feed a study

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on this regional assessment.

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How would it look like if we
had these systems installed

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for an entire city?

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Here in Massachusetts, say, for
example, the city of Cambridge?

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How would it look
like if we had it

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for the entire state
of Massachusetts?

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So what are the impacts of that?

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And this ties very well
into the previous session.

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We were talking about data.

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Data is one of the
things that is needed.

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And here, this is a database
that HEET is making.

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The idea is to enable
quantitative comparison

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between the systems to
identify, what are the design

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parameters that work best?

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things like the diameter
of the main pipe.

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What is the temperature
range that the main pipe

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is allowed to fluctuate in?

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So all these kind of engineering
technical aspects but also

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practical things.

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So we want to capture the
knowledge of the demonstration

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project in Framingham.

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We want to capture the
knowledge of the project

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in Colorado Mesa University that
will be presented later on that

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has been running since 2008.

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So all of this
knowledge, we want

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to be able to capture
it in a database that

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will be open source.

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And this interface
HEET has created,

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it is up and running right
now, our beta version,

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and we're in the process
of collecting data from all

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these existing projects.

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We also want to capture
information about costs.

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We want to really,
eventually, identify how

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to reduce those costs, right?

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But we want to first
have that database.

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And we want to support
the development

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of data-driven legislation
and regulation,

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which connects to
our session yesterday

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with Chair Van Nostrand.

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So what is it?

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We're creating a public data
bank of these geothermal network

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installations.

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And why?

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We want to do this to
inform and to facilitate

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future developments
of these systems.

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And how?

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This interface is linked
to the HEET website,

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and it is stored in the
Harvard Dataverse, which

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has the infrastructure to
store data in perpetuity.

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So as we, right now, have few of
these demonstration projects--

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for example, the
one in Framingham

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and Colorado Mesa University.

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The idea is that when we
have more of these systems,

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we want to be populating
this database so

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that it is really useful,
and that knowledge can be--

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the knowledge from
the database can

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be useful for those installing
these systems for communities

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that are thinking of
doing these installations.

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For example, we have the
Kickstart program here

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in Massachusetts that is also
part of this LeGUp project

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where 12 communities
in Massachusetts

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are doing either feasibility
studies or community-engagement

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projects as to,
how can they move

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to have one of these geothermal
networks in their community?

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And we often get the question,
is this database only

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for the US, or if we
have a system in Canada,

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can it be there?

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And the answer is yes.

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So while the LeGUp
research project

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is funded by Massachusetts
Clean Energy Center

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and is focused on
the demonstration

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projects in Massachusetts,
this database

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is, really, open nationally and
to projects in other countries

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as well.

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So what are the
different categories

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that we are acquiring
in this database?

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Information about the buildings.

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We talked about the
building retrofits

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in the previous session;
about the system performance.

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That was the coefficient
of performance

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that was referred to; about
the emissions reductions;

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about the subsurface.

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That's where the borehole test
information gets input; about

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costs; about the energy
usage of the buildings

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before and after these
geothermal networks have

00:11:21.280 --> 00:11:23.870 align:middle line:84%
been installed; and
about demographics.

00:11:23.870 --> 00:11:27.790 align:middle line:84%
How many people are being
benefited by these systems?

00:11:27.790 --> 00:11:31.000 align:middle line:84%
And these different
categories can

00:11:31.000 --> 00:11:34.510 align:middle line:84%
be also put into
these three buckets

00:11:34.510 --> 00:11:35.870 align:middle line:90%
of the thermal resources.

00:11:35.870 --> 00:11:39.260 align:middle line:84%
What's happening in the
boreholes, the distribution,

00:11:39.260 --> 00:11:43.960 align:middle line:84%
the main loop, and what's
happening in the buildings?

00:11:43.960 --> 00:11:48.910 align:middle line:84%
And now I'd like to close
with one of the projects

00:11:48.910 --> 00:11:50.920 align:middle line:90%
that HEET is working on.

00:11:50.920 --> 00:11:52.900 align:middle line:84%
As I mentioned, this
is the extension

00:11:52.900 --> 00:11:57.440 align:middle line:84%
to the Framingham project
that Eric mentioned earlier.

00:11:57.440 --> 00:12:01.820 align:middle line:84%
This would be the
extension to that project.

00:12:01.820 --> 00:12:03.930 align:middle line:90%
And this is the original loop.

00:12:03.930 --> 00:12:08.880 align:middle line:84%
Right now, we are planning
a borefield right here,

00:12:08.880 --> 00:12:16.040 align:middle line:84%
and the idea is that this is the
very first extension loop of one

00:12:16.040 --> 00:12:19.340 align:middle line:84%
of these systems that is
connecting to an already

00:12:19.340 --> 00:12:21.210 align:middle line:90%
installed and operating system.

00:12:21.210 --> 00:12:24.380 align:middle line:84%
So this extension
loop can be the model

00:12:24.380 --> 00:12:27.980 align:middle line:84%
for how these systems
can connect in modularity

00:12:27.980 --> 00:12:29.760 align:middle line:90%
and grow throughout the city.

00:12:29.760 --> 00:12:33.500 align:middle line:84%
So learnings about how
to do those connections

00:12:33.500 --> 00:12:39.470 align:middle line:84%
and grow these systems will come
from this expansion project.

00:12:39.470 --> 00:12:43.200 align:middle line:84%
And with that, I'll hand it
over to our next speaker.

00:12:43.200 --> 00:12:46.850 align:middle line:90%
[APPLAUSE]

00:12:46.850 --> 00:12:59.000 align:middle line:90%