In partnership with PLMA, this group is for practitioners from energy utilities, solution providers, and trade allies to share load management expertise and explore innovative approaches to program delivery, pricing constructs, and technology adoption.

Post

Heat Pumps in Michigan Winters.

Doug Houseman's picture
Visionary and innovator in the utility industry and grid modernization Burns & McDonnell

I have a broad background in utilities and energy. I worked for Capgemini in the Energy Practice for more than 15 years. During that time I rose to the position of CTO of the 12,000 person...

  • Member since 2017
  • 218 items added with 75,434 views
  • Feb 3, 2022
  • 513 views

Arctic heat pumps and closed loop geothermal should be the only heat pumps sold in the state of Michigan. 

In Marquette the average temperature is 20° in Dec; 15° in Jan; and 17 °in Feb. Nov & April in the 30s and March the mid-20s. Standard heat pumps end up using their back up electrical elements at these temperatures. Using as much energy as a furnace.

In Detroit Dec, Jan, and Feb average temps are still below freezing, March, April and Nov would offer a COP of about 2 (50% less energy).

With an Arctic unit, In Marquette the COP is above 2 (except for very cold nights) and reach 3 (67% savings) when the temperature was over freezing. In Detroit, COP would remain above 2.5 (with exceptions).

With a closed loop geothermal system that is designed for cold weather, the COP in both cities would remain above 3, again with exceptions.

In the summer the newest heat pumps have a COP of 4 or better for A/C.

In December in Marquette solar produces 4 percent of its annual output (45 of 1228 KWH) [NREL] and in Detroit December is about 4.5% of annual use. 

By contrast in Dec residential load is almost 9% of electricity, and 15% of natural gas annual use.

Winter should be our concern when planning for the future. 

How do we fix this mismatch?

Doug Houseman's picture
Thank Doug for the Post!
Energy Central contributors share their experience and insights for the benefit of other Members (like you). Please show them your appreciation by leaving a comment, 'liking' this post, or following this Member.
More posts from this member
Discussions
Spell checking: Press the CTRL or COMMAND key then click on the underlined misspelled word.

No discussions yet. Start a discussion below.

Get Published - Build a Following

The Energy Central Power Industry Network is based on one core idea - power industry professionals helping each other and advancing the industry by sharing and learning from each other.

If you have an experience or insight to share or have learned something from a conference or seminar, your peers and colleagues on Energy Central want to hear about it. It's also easy to share a link to an article you've liked or an industry resource that you think would be helpful.

                 Learn more about posting on Energy Central »