Articles, Blog

Building an Energy-Efficient Commercial Building

November 25, 2019

Hi, I’m Larry Janesky from Dr. Energy Saver. The builder of this nine thousand-square-foot commercial garage wanted an efficient way to heat this building and turned to Doctor Energy Saver What we’re going to do is design a
radiant heating system with loops of radiant heat in the floor slab with a very high efficiency gas boiler to heat the fluid that goes through that and we’re gonna make sure that this
building doesn’t leak any more air than it has to. Another part of the strategy will be to
make sure that the heat isn’t lost to the ground through the slab, both downward and outward
through the foundation walls. Now the foundation walls are just being
constructed here and as soon as they’re done the shell will be constructed because it’s wintertime, and then we get
inside the building and begin the construction of the radiant
heating system and the floor. Because the concrete mixer can’t drive on to the floor with the radiant heat loops we have to use a pump truck to pump the concrete into the building. You can see that the concrete slab will
be at least six inches thick and these radiant heat loops will be embedded in the concrete
country The healing will keep that slab nice and warm so that there’s a lot of thermal mass at the bottom of the
building and the heat will radiate out and heat the building That makes a nice warm slab You’ll feel it on your feet, all the heat won’t be just up in the ceiling and when the garage doors are open to all the heat won’t go out because we have the heat stored in this thermal
mass of the the slab. So when the garage door closes again the recovery rate of the temperature of the
building will be are very good. It will warm right back up because the floor is nice and warm. Four inches of foam insulation on the
outside of the building below grade prevent heat from in the building from being lost to the cool ground year-round. All right..well, after several months of
construction the building is all done, it looks beautiful and you know you’d think that the people
that construct buildings and homes would pay attention to these details that
make a big big difference for energy efficiency and we found that at Dr.
Energy Saver we need to be vigilant and watch their
work because mistakes are made all the time. I mean
that’s why Dr. Energy saver is in business to fix all the problems, all the energy and comfort related problems on that builders have made, and one was here
uh… there was a big hollow at the end of this block wall at every garage door bay
and there’s six of them, so on each side there was uh… twelve big mistakes are there was
a big hollow where there was just a thin piece of sheet metal between the outside and the inside and it
was uninsulated and uh… big space there had been filled with foam.There
was also other issues up at the top, where there was air leakage
around the perimeter of the roof all around the nine thousand-square-foot
roof of this building that we had to seal up and foam,
and so forth to make the building air-tight. In this nine thousand-square-foot garage
the floor is heated as we said, and the advantage of that is that the heat is
down low the floors warm and that warmth arises and heats all the contents and the people
that are working in here feel that he coming up. Your feet are warm and it’s very comfortable. Let’s take a look at how this floor is heated. Here’s the heating loops that go
underneath the slab to heat the slab and our boiler water is circulated
through each loop. We have five different zones throughout
this nine thousand-square-foot slab and here’s five different of circulators that are
variable speed circulatos so we can adjust to speed that the water circulates uh… to control the temperature of the
slab in the various zones. And what about the boiler? Well this is
the high-efficiency part. This is a MOD CON brand boiler and MOD and CON stand for something. and
that happens to be with this particular boiler — although there’s modulating
condensing boilers made by other manufacturers. Modulating means that it will vary the opening of the gas valve
depending on the load so when we need a lot of heat will burn more gas to create more heat and deliver to the building, and when we
only need a little heat that gas valve will close and will only have a little
flame and produce a little heat that we need so that saves energy. We’re not
full blast all the time. Condensing means that this unit has a secondary heat exchanger
which squeezes all the heat out of the exhaust gases so that uh… the exhaust
gases cool so much that water condenses. water from the pool will condense out of the
uh… boiler andy exhaust is so cool now we’re not wasting heat, blowing up the
chimney. It is so cool we can use PVC air exhausts. We also have
dedicated air intake through PVC pipes for this boiler,so we’re not using air
from inside the building (conditioned air) blowing it out, and thereby
depressurizing the building and causing whatever leaks there are in this building to
leak even more. So that it’s high efficiency. Opportunities to save energy and save
money existing every home in every commercial building in North America and it’s fun because in the midterm
these repairs paper themselves, because you’ll save as much money is it cost and
more in the mid-term. And you’re doing something
good for the environment. Well there’s another project completed
by Doctor Energy Saver. In this building for ever and ever we’ll sip fuel to keep it warm instead of gulping it. If you have a house that you like to have
sip fuel instead of gulpingf it, and make it more comfortable with less drafts Call Doctor Energy Saver.We’ll love to help you.

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