#double-play

29 articles · 16 raw sources · 4 inventory

A 2002 gathering documented in the Cool Cell development archive by a surviving list of attendees.

Alley Cat Allies 2026-08-01

Cat welfare organization whose outdoor shelter build guidance informed the miniature Double Play cat-shelter design dimensions.

Bideawee 2026-08-01

Animal welfare organization whose winter community-cat shelter guidance set the size and layout precedent for the cat-shelter experiment.

i2Cool 2026-08-01

Commercial radiative-cooling company named by MIT Technology Review (Dec 2025) as an active player.

ICON 2026-08-01

Journal of the International Committee for the History of Technology, which published Kayatekin's 2025 paper on Steve Baer and the double-play thermosiphon.

Federal renewable energy lab in Golden, Colorado listed as a source of technical assessment, documentation funding, and grant partnerships for Baer House preservation.

OeAD 2026-08-01

Austrian organization that housed 3,500 students per year across nine Passive House dormitories, using institutional bulk deployment as living demonstration.

Institute behind the Passive House (Passivhaus) standard, cited as the clearest scaling success in the archive's promotion research (2,500 units built in Massachusetts with 35,000 …

Passivhaus Trust 2026-08-01

UK Passive House affiliate that deliberately pitched insurance, legal, climate-risk, and finance sectors to diversify beyond the sustainability niche.

PetMD 2026-08-01

Veterinary information source whose feline heatstroke thresholds (104F+ body temperature) constrained the cat-shelter experiment's safety design.

Planck Energies 2026-08-01

Commercial radiative-cooling company named by MIT Technology Review (Dec 2025) as an active player.

SkyCool Systems 2026-08-01

Commercial radiative-cooling company named by MIT Technology Review (Dec 2025) as an active player in the current passive-cooling wave.

Spacecool 2026-08-01

Commercial radiative-cooling company named by MIT Technology Review (Dec 2025) as an active player.

Publication documenting the green-building performance gap, including UK showcase buildings using up to 3.5x more energy than modeled.

ZEPHIR 2026-08-01

Italian Passive House affiliate that trained over 5,000 designers over two decades before pivoting around 2017-18 to pitching builders directly.

Company co-founded by Steve Baer in 1969 that developed and sold the DrumWall, Skylid, Sunbender, battery cabinets, Cool Cell, and Double Play, and passed to Benjamin Rodefer's sol…

Alfred von Bachmayr 2026-08-01

Architect working with Zomeworks on border and Navajo Reservation building prospects for Double Play systems, per the 2004 shareholders letter.

Michael Ingui 2026-08-01

Architect whose 'sitting in shorts during a polar vortex' story is the model example of Passive House comfort-framed messaging.

Los Ranchos 2026-08-01

New Mexico village whose Agri-Nature Center — a working farm and education center with repeat visitation — is the proposed demonstration site for the Double Play shipping-container…

San Antonio 2026-08-01

Texas city (29.41N, 98.48W) identified via a hyperlocal weather station as the actual build site for the miniature Double Play cat-shelter experiment, with humid conditions that ma…

Santa Fe 2026-08-01

New Mexico city where Van Dresser built a refined solar adobe house near Canyon Road around 1956, later called 'the first solar house west of the Mississippi'.

Taos 2026-08-01

New Mexico town that is home to Earthship Biotecture and was the center of Peter Rabbit's later poetry career.

Double Play 2026-08-01

Zomeworks' thermosiphon-based passive heating/cooling product line — the subject of Baer's 2004 shareholder pitch, Davis's studio installation, the Los Ranchos container proposal, …

Earthship 2026-08-01

Mike Reynolds' enterprise sustained by paid tours, a build-your-own academy, nightly rentals, and a legislative carve-out, with roughly 3,000 homes worldwide using its techniques.

Raspberry Pi Zero 2026-08-01

Low-cost single-board computer at the heart of the archive's reusable off-grid sensor and logging rig for small passive-thermal experiments.

Skymat 2026-08-01

Zomeworks' unglazed collector panel product, used by Bruce Davis in Double Play installations and cited in Baer's 2003 unglazed collectors article for delivering warm showers throu…

Kayatekin's 2025 ICON paper — the first academic work to establish the Baer House and Zomeworks in international scholarship, calling the thermosiphon Baer's broadly overlooked cen…

Stock Pond Melter 2026-08-01

Baer's patented closed-loop convective device (US 3,618,569) that keeps an ice hole open for livestock — the conceptual seed of the double-play thermosiphon lineage.

The 2002 Passive Heating and Cooling System patent held by Zomeworks — the Cool Cell architectural system patent underpinning the Double Play.

Inventory

Andy's Shack — Temperature Charts
Andy's Shack — Temperature Charts

Two temperature monitoring charts for Andy's Shack — 8-inch PVC pipe storage with roof-mounted copper radiators, covering June 2000 and June–July 2002.

activep3
Bruce Davis Studio — Double Play Installation
Bruce Davis Studio — Double Play Installation

Two photographs from the 2004 Double Play installation at architect Bruce Davis' studio in Albuquerque — Sky Mat roof radiators and interior PVC pipe storage.

activep3
Double Play Container Prototype — Photos and Schematic
Double Play Container Prototype — Photos and Schematic

Exterior and interior photos of the Zomeworks Double Play container prototype (EXIF 2026-03-25), plus a hand-drawn schematic of the thermosiphon supply/return loop.

activep3
Double Play Installation — Photos
Double Play Installation — Photos

Two photographs of a Double Play installation — radiant ceiling panels and the container exterior.

activep3

Raw sources