https://www.energyvanguard.com/blog/the-fundamentals-of-heating-and-cooling-degree-days-part-1/ Building science knowledge, HVAC design, & fun Fri, 29 Oct 2021 14:28:40 +0000 hourly 1 https://wordpress.org/?v=6.6.2 https://www.energyvanguard.com/blog/the-fundamentals-of-heating-and-cooling-degree-days-part-1/#comment-7681 Wed, 26 Nov 2014 21:54:42 +0000 http://energyvanguard.flywheelsites.com/?blog_post=the-fundamentals-of-heating-and-cooling-degree-days-part-1#comment-7681 Great article. Looking
Great article. Looking forward to read part 2!

]]> https://www.energyvanguard.com/blog/the-fundamentals-of-heating-and-cooling-degree-days-part-1/#comment-7680 Thu, 20 Nov 2014 19:45:17 +0000 http://energyvanguard.flywheelsites.com/?blog_post=the-fundamentals-of-heating-and-cooling-degree-days-part-1#comment-7680 Hello Mr. Bailes, 
Hello Mr. Bailes, 
Once again, it’s really hard to beat wikipedia: “Heating degree days are typical indicators of household energy consumption for space heating. The air temperature in a building is on average 2°C to 3°C higher than that of the air outside. A temperature of 18°C indoors corresponds to an outside temperature of about 15.5°C. If the air temperature outside is 1 °C below 15.5°C, then heating is required to maintain a temperature of about 18°C. If the outside temperature is 1 °C below the average temperature it is accounted as 1 degree-day. The sum of the degree days over periods such as a month or an entire heating season is used in calculating the amount of heating required for a building. Degree Days are also used to estimate air conditioning usage during the warm season.” 
 
Since you are attempting to describe the Engineering of a Building, please re-address your heat equations for the opposite viewpoint of heat flow found in engineering vs science. Also, please describe from a heating oil co. POV. TY! 
 

]]> https://www.energyvanguard.com/blog/the-fundamentals-of-heating-and-cooling-degree-days-part-1/#comment-7679 Wed, 12 Nov 2014 19:45:40 +0000 http://energyvanguard.flywheelsites.com/?blog_post=the-fundamentals-of-heating-and-cooling-degree-days-part-1#comment-7679 Allison, 

Allison, 
 
How do you convert natural gas consumption to kWh before you add it to electricity? I tried to download your spreadsheet but wasn’t successfull. I try to avoid adding different source energies since the correct way from a home load perspective depends on relative heating and cooling equipment efficiencies. 
 
Perhaps you will cover it in part 2, but one of the many issues in correlating energy use to degree-days is that there are a lot of energy loads in houses that are not related to heating and cooling and thus not related to weather either. I have done some degree-days analyses where I try to back out the “base” loads from cooling loads by subtracting our the average electrical loads during non-cooling months (spring and fall) from the cooling months, then normalizing the remaining cooling season consumption to cooling degree days. I do the same with heating loads using either natural gas or electricity depending on the heating system. I really don’t know if this works better, but it makes more sense to me.

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