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energy usage and production for july 2015

2015 08 01: the living building challenge requires a report on my home’s energy consumption for one year. i was not taking solar panel energy production or garage energy usage until mid-june. so july data fulfills the first month of the lbc requirements.
july 2015:
energy usage: 584 kWh
energy production: 846 kWh
the energy production from sunpower website (the supplier of my solar panels), 864 kWh, is a little over 2% higher than the sitesage data.
the energy production data does not yet include energy generated by the solar panels that power my hot water heater.
during july, my house had three people living in it.
july was easy. december and january are going to be tougher. fortunately, there will be more easy months before december.

appreciation

2013 12 11

brooks grasso did a great job of arranging a construction loan for the house. he and the columbia bank’s mortgage division, fulton mortgage company, were pleased to offer a loan on my old hopkins road energy efficient and environmentally benign house. this was in startling contrast to some other banks. not only that, our build did not start anywhere near the date we provided; because of this we ended up way behind schedule. fulton mortgage took this in stride and made effective arrangements to overcome the problem. i could not be happier with brooks and the mortgage company.

brooks is extremely knowledgeable, very responsive and very helpful. i’ve taken the liberty of presenting his contact information from a scan of his business card and included copies of a few of his awards. if you’re in need of a construction or other home load, he’s the one.

like all of my appreciations, this is unsolicited and i receive nothing for it.

a really helpful person

a really helpful person

 

 

the brine loop

the house will have an energy recovery ventilator. this device expels stale air from the house while intaking an equal quantity of fresh air. the zehnder ventilator that we selected does this at an efficiency of 83%.

the air intake can freeze during winter. to keep this from happening a small electric resistance heater can be installed or a brine loop can be used. the loop is made of plastic pipe embedded four feet or deeper in the ground and is at least 250 feet long. in the loop a glycol solution circulates, not brine after all. in my area the solution takes on the ground temperature of 55 degrees fahrenheit. the glycol finally passes through a radiator in front of the ventilator’s air intake. this heats the air going into the zehnder ventilator during winter, so no electric heat is needed. it also cools the air during summer. follows a picture of the pipe that carries the glycol solution. this pipe is about four feet under the surface. two feet below it is pipe carrying solution in the opposite direction. the pipe shown leaving the picture at the bottom goes to a coil, which will be unwound into the rest of the trench.

pipe for the brine loop

pipe for the brine loop

windows arrived

an installed window

an installed window

the windows arrived. unfortunately, a couple of them had chipped glass and one was sized incorrectly; so, we are still slowed down. the following pictures show the windows as sealed and flashed respectively with prosoco joint and seam filler, pink, and fast flash, red over the pink.

prosoco air dam is used on the interior.

 

 

 

 

the exterior is flashed with prosoco fast flash

prosoco fast flash

 

 

 

 

 

 

 

 

 

the interior is sealed with white air dam from prosoco

the interior is sealed with white air dam from prosoco

 

photo of the interior

my very good friend, ross shearer, took this photo of the interior of the home, showing the kitchen. the windows and doors are on the north and east side. for a passive house or any energy efficient house, it is generally good to keep the windows small on all but the south facing wall. this allows the house to gain heat from the south when the sun is shining while not losing heat through windows on the north, east and west sides. even though i am familiar with the drawings, i was pleasantly surprised that the north and east windows are so large as they look good; but, still small in comparison to those on the south wall.

interior of the house

interior of the house