Email: Bruce Davis forwarding David Harrison — Double Play Container Drawings and Notes

Two-part email thread received 2026-10-18. Bruce Davis forwards David Harrison’s 2026-10-16 message to Brett Elmendorf and Christina, with a covering note adding context about unglazed collectors and movable shading.

Bruce Davis covering note

From: Bruce W. Davis (brucearchi@gmail.com) To: Brett Elmendorf, Christina Date: 2026-10-18, 8:04 AM Subject: Fwd: Baer Double Play Container Drawings and Notes

Brett and Christina,

Here’s Dave’s drawings and notes on the Double Play Container.

The notes are important. He points to two things that have concerned me for a long time. One, that is that the Energie Solar, unglazed collectors are not viable in climates colder than Albuquerque. The other, that movable shading is desirable or mandatory in almost every scheme.

Bruce

David Harrison original email

From: DAVID Harrison (dmaxidog@comcast.net) To: Jose T. Baer (jtb@osoag.com), Bruce Davis (brucearchi@gmail.com), Dan (solardan26@gmail.com), David Harrison (dmaxidog@comcast.net) Date: 2026-10-16, 3:30 PM Subject: Baer Double Play Container Drawings and Notes

To All,

I visited the Double Play Container again, took some notes, and found the original design drawings on an old thumb drive. I reworked the drawings to reflect the “as built” the best I could. The drawings are PDF’s, and new documents are in Word.

I think it was built and first commissioned about 2012 to 2013. After it left the ZW yard I had little to no further involvement in the project that I can recall. I’ll do what I can the answer any questions or fill in the blanks as I know. I’d be happy help or advise on the install. It would be great to monitor and publish the performance. Cooling should be pretty easy in Santa Fe. Heating may be difficult and improved with a glazing over the absorbers. Wind and cold weather drags the heat away. My concern would be cooking the system during warm sunny weather. Adjustable shading would help.

Regards to all, David Harrison

Attachments (filed in work/inbox/)

Three attachments accompanied this email thread and are filed in the project inbox pending processing:

Double Play Container Drawings.pdf — David Harrison’s reworked as-built drawings (originally found on thumb drive, reworked to reflect as-built condition)
Zomeworks - Baer Container Double Play Description.docx — Description document
Zomeworks-Baer Double Play Seasonal Conversion Proceedure.docx — Seasonal conversion procedure notes

Key claims

Construction date: Double Play Container built and first commissioned approximately 2012–2013.
Designer involvement: David Harrison had little to no involvement after the container left the Zomeworks yard.
Performance expectations: Cooling should be easy in Santa Fe; heating may be difficult without glazing over absorbers.
Shading concern: Risk of overheating during warm sunny weather; adjustable shading recommended.
Bruce Davis concern (longstanding): Énergie Solaire unglazed collectors not viable in climates colder than Albuquerque.
Bruce Davis concern (longstanding): Movable shading is desirable or mandatory in almost every passive scheme.