Archive for March, 2011

LED links

March 29, 2011

* Bridgelux has demonstrated a light output of 135 Lm/w from a GaN-on-Si LED, the first achievement of commercial performance from a silicon substrate LED. It may be three years for products based on the technology to come to market. Cree and Boston University want compensation for Bridelux’ use of GaN-on-Si technology.

* Our LED retrofit solution at St. Andrews is featured in LEDs magazine.

Mr. Johnson

March 27, 2011

In discussing a current project of ours with a colleague currently working in Malaysia (where you can still get board-formed concrete with a finish good enough to leave unfinished), he suggested our mentor Philip Johnson’s Leonhardt house as a model. Above is a diptych painting of Mr. Johnson’s design, and below is a construction photo of the board-formed concrete. The key to the concrete finish: abundant oil applied to the forms.

I hate vacations. If you can build buildings, why sit on the beach?
Philip Johnson

NYC CD Compliance with Energy Code

March 23, 2011

Opportunity to comment on proposed amendment to Section 5000-01 of Title 1 of the Rules of the City of New York relating to construction document compliance with the Energy Code.
Date / Time:
March 28, 2011/ 10:00 a.m.
Department of Buildings
280 Broadway, 6th Floor Training Room
New York, NY 10007

Proposed Rule Amendment
…the Department of Buildings proposes to amend Section 5000-01 of Chapter 5000 of Title 1 of the Rules of the City of New York…

Written comments and a summary of oral comments received at the hearing will be available until April 28, 2011 at the Office of the Commissioner, Department of Buildings, 280 Broadway, 7th floor, New York, NY 10007.

please email me for PDF of proposed changes.


March 9, 2011

Design: S. Behar and M. Lau


March 8, 2011

* Natural ventilation is back, finding its way into data center design.

* Manhattan customers of Con Edison steam should consider a microturbine, which can generate 275 kW of “free” power when it acts as a pressure-reducing device for steam coming in from the street. An additional benefit is building emergency generation with no emissions. Contact me for a demo at Con Ed’s 74th Street steam plant, or for a cost-benefit analysis.