All Blog Posts Tagged 'zero' (5)

Building Science is Worthless...

Building Science is Worthless...

Thousands of hours went in this construction detail. When we factor all the time spent by building science engineers, from all over the world,…

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Added by Chris Laumer-Giddens on August 25, 2015 at 3:30am — 1 Comment

A CHEAT SHEET FOR ENERGY MODELLING OLD HOMES

Sustainable Energi Solutions

The biggest errors occur in modeling estimates of…

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Added by Bijou Lulla on July 8, 2015 at 1:18am — 5 Comments

Assessing long-term PV performance in a low-energy home

Zero Energy Home Friends,

My daily PV output from a 6.56 kW PV system has averaged 22.7 kWh/day over the last two years.

kWh= AC kWh from inverter to grid

irrday= cumulative kWh/m2/day plane of array

pvptmp= array temperature (F) taken on back on one of the modules

obs= elapsed…

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Added by Danny S. Parker on August 17, 2014 at 12:55am — No Comments

The Bumpy Road to Net Zero Energy

By Alan Meier



It’s easy to lose the longer perspective when we are involved in day-to-day efforts to save energy. That’s why I want to focus on a single home—Danny Parker’s house in Florida—to illustrate the bumpy road to zero energy use. The figure on the right shows 21 years of electricity use, along with many of the major events in Danny’s household. (Follow the green…

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Added by Home Energy Magazine on July 11, 2011 at 12:30pm — 16 Comments

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