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AO Smith Presentation - Shared screen with speaker view
Sean Armstrong
20:11
Super excited!
Panama Bartholomy
25:17
Me too!
Panama Bartholomy
26:58
wow!
Panama Bartholomy
27:10
Partner of the year. well done!
Panama Bartholomy
29:10
Tech geeks? this crowd? Deffinitly!
Barry Hooper
32:28
Is one of these units being provided to/procured by PG&E, to provide performance data for CBECC-Com?
Danny Tam
33:29
I don't think it's on the current work plan. If AO Smith could donate a unit I'm sure they will test it
Panama Bartholomy
35:50
Nice diagram!
Panama Bartholomy
37:00
nice size profile!
Sean Armstrong
41:28
I would use this in apartment complexes to provide domestic hot water to 1-3 floors via a manifold for each apartment with 3/8th inch piping, with no recirculation—just rapid delivery.
Panama Bartholomy
41:29
Great point on Kitchen AC benefits!
Panama Bartholomy
42:11
You do such nice projects, Sean. Glad you are excited about this.
Bruce Severance
43:47
What type of refrigerant are you using?
Sean Armstrong
44:22
Yep—the sweet spot in hot water design, both construction costs and energy savings, is a non-recirculation system to lots of apartments. That works well with 3/8th inch piping and WaterSense quality delivery time, while saving $3000 per apartment.
Farhad Farahmand
44:56
Thank you for the presentation! 1. Can it be ducted to outside? 2. What is the EWT for the rated COP? Could these units be used for recirculation applications (if needed)? 3. Will it be responsive to utility signals at some point?
Sean Armstrong
45:30
I want to know how to put it in a small space and vent it outdoors. That would work best for placing in the central elevator lobby on each floor.
Georgia Toland
46:14
For Department of Health applications, there are sizing and recovery requirements to make sure delivery at required temperatures is available at all times. Is it possible to determine an actual recovery with these units?
Danny Tam
46:37
Hi Sean how do you make sure there are enough air movement for these mini central systems?
Panama Bartholomy
46:52
Thank you for your support for Energy Star in these trying times for the program. The support of companies like AO Smith are critical for its continued existence. God to see you guys stand up and make your voice heard on this.
Panama Bartholomy
47:08
good, not god.
Tom Kabat
47:35
Does it make sense to provide a chart of gallons per day and associated ton-hours per day of cooling provided? (or gallons/day and associated kbtu/day of cooling provided.)
Sean Armstrong
47:59
The engineers in five different projects use two 80 gallon tanks in the elevator lobby, serving 5-11 apartments. The venting is to lobby and hallways.
Ton Mathissen
48:24
What is the MSRP on this unit?
Panama Bartholomy
48:47
We love Francois!
Sean Armstrong
49:26
Per floor, I see 4 to 6 tanks per floor, with the other sets of two 80 gallon tanks at the end of the hallways. Some engineers have vented them outdoors as well, so I’ve see both indoor and outdoor venting from these central locations.
Georgia Toland
49:50
@Tom Kabat...was that in response to my question?
Jim Lutz
51:17
One of the unintended consequences I've heard about commercial HPWHs in restaurant kitchens is hot water use may go up as soon as back room employees realize hot water use causes cold air!
Panama Bartholomy
51:33
hilarious!
Danny Tam
51:33
Sean that would be the way to go, when we mentioned mini central systems some people were concern that there will be more infiltration. Just FYI central HPWH under 8 units per system without recir can be modeled in CBECC already
Alice Sung
54:14
Interesting--what about small-mediumlaundromats
Alice Sung
54:22
l
Panama Bartholomy
57:32
Wow!
Sean Armstrong
58:13
Woo!
Bruce Severance
59:53
What kind of refrigerant does the system use?
Claudia Pingatore
01:02:06
Is this currently being incentivized by any utilities/programs?
Steve Oliver
01:02:10
Is it possible to lock out the resistive heating elements, or require manual intervention before they are engaged? I think behavior might change if users appreciate how frequently (or hopefully infrequently) they are used.
Nick Dirr
01:02:29
If the space does not have 3200 cubic ft of space, can louvers be utilized?
Bruce Severance
01:03:00
Can you explain why it doesn't make sense to try to preheat with solar thermal?
Danny Tam
01:04:17
Delta T will be much lower, therefore the COP will be lower....makes more sense to power the HPWH with PV instead
Farhad Farahmand
01:05:19
Thank you very much Bill.
Bruce Severance
01:06:32
yes. Exactly. Just wanted to be sure everyone understands the Delta-T is critical to efficiency and acheiving full condensing of refrigerant. Have heard people speculate about combining the two, and its not a good idea...
Gabriel Taylor
01:12:55
Since not possible to lock out resistive heating element, is there at least feedback on when and how often it is used?
Alice Sung
01:13:20
Thank you, Bill!
Tom Kabat
01:14:05
Wouldn’t moving both resistance elements to the upper location allow you to achieve a higher than 150 gallon first hour rating? e.g. using the hour to deliver 170 gallons of hot water while leaving the tank bottom cooler at the end of the test.
Claudia Pingatore
01:17:37
Awesome presentation, thank you!
Michael Hicks
01:17:46
Thanks Bill, looking forward to more AO Smith innovations moving forward!