Slides available at http://ceere.org/heatpumpsforengineersandenergyauditors-may2022.pdf

If you need a heat pump intro session, see recording athttp://ceere.org/heatpumptrainingrecordingMarch2022.htmlToday's slides are available at http://ceere.org/heatpumpsforengineersandenergyauditors-may2022.pdf

hello - is it possible for the zoom meeting host to enable captions?

Yes Molly, I enabled automatic captioning

it's working - thank you!

I see a hand raised. If you have a question about the content please type it in the Q&A or if you have other issues you can use the chat.

Would you explain what you mean by inverter driven heat pumps? Does this mean AC to DC, or 1-phase AC to DC to 3-phase AC?

The inverter compressor uses a drive to control the compressor motor speed to modulate capacity. This differs from traditional single-speed or two-stage compressors which are locked in to a specific number of speeds. This increases efficiency by delivering only the required compressor capacity needed by the building, and tightens the "deadband" or the range of temperatures indoor occupants experience.

thx

To keep everything organized, let's try to keep Q&A in the separate Q&A chat window. Thank you!

I've got a meeting at 2pm, will it be possible for me to get a copy of this seminar to watch at a later date? This is all very useful info that I would like to reference.

Yes I will send the recording to all who registered

Thank you

Are air to water HPs same as WSHPs?

If you have questions, please click on the Q&A button and type them there, rather than in the chat.

Ok Thanks

Hi Reddy - not quite. Air-to-water HPs are simply heat pumps with the "indoor unit fan coil" transferring heat from the VRF system to the water flowing through that unit. A WSHP extracts/rejects heat from a condenser water loop that runs through each unit. The "air" in "air to water" refers to the fact that we are moving heat between the air and the water source (hydronic distribution loop, etc.)

See our intro session for more information on that:http://ceere.org/heatpumptrainingrecordingMarch2022.html

Thanks Mike

can you size the wastewater heat recovery for 24/7 heating and cooling?

please put questions in the Q&A, not here in the chat

That was a ton of info! Thank you for the content. I will look forward to seeing the presentation again.