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Commercial refrigeration system: Trane

June 3, 2013

The Trane® Advantage VRF™ variable refrigerant system features variable-speed compressor technology and offers customizable solutions for temperature control and occupant comfort. The new systems from Trane adopt ‘smart inverter’ compressors and feature an upgraded vapor injection system, providing improved performance over previous versions.


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ventilation system, calculated conditiong

Calculated Conditioning: The IAQ Of UFAD

UFAD and displacement ventilation systems require accurate estimates to meet relative humidity requirements and ensure efficient operations. Take a look at a few design options, and contemplate the reader challenge at the end.
Robert Bolin Andrew Reilman
April 26, 2013
Since their introduction in Europe in the 1950s, and their domestic rise in specification during the 1990s, UFAD and displacement ventilation systems promise significant energy savings as a direct result of a higher supply air temperature that yields an increase in the use of economizer or free cooling hours.
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Ray and Joan Kroc Corps Community Center

Corps Community Revival: New Chicago Community Center Features Diverse MEP Design

Practical MEP design — comprising modular boilers, waste heat recovery, remote monitoring, designing around local restrictions, and much more — delivers flexibility and sustainability to Chicago’s largest community center.
Tyler Jensen Andrew Silverstein
January 30, 2013
In today’s world, so-called “high-performance, sustainable” facilities are a dime a dozen. But many of these buildings rely on overly complex mechanical systems to carry out their mission.
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HVAC on the Aisles

HVAC on the Aisles

January 2, 2013

Once again, we bring you an advance peek of what will be on the floor when AHR Expo attendees arrive in Dallas late this month. Attendees and non-attendees alike can also browse a treasure trove of info at www.ahrexpo.com. But for now, enjoy a snapshot drawn straight from the exhibitors themselves.


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Issues and Events

Lonmark International and OpenADR Alliance agreement enables building-to-grid connectivity

October 27, 2012

Commercial buildings will soon be able to connect to the “Smart Grid” with ease thanks to a new strategic relationship between industry alliances LonMark® International and OpenADR, say the organizations. LonMark and the OpenADR Alliance, a nonprofit corporation created to foster the development, adoption and compliance of a Smart Grid standard known as Open Automated Demand Response (OpenADR), are working together to enable interoperability between certified products that will better enable commercial buildings to manage their energy uses on the Smart Grid.


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Hybrid Heat Pump System

Right Steps For Retrofits

Kendra Tupper, P.E.
October 19, 2012
Achieving deep energy savings is especially challenging when you’re faced with an existing structure with poor orientation, historic preservation requirements, and little space for renewables. The Byron Rogers Federal Office Building’s retrofit is scheduled to be completed in 2013; the post-renovation building is projected to consume less than half the energy it did before.
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Rockefeller Center
Case In Point

Iconic cool: TES and chiller retrofit eases system strain from the other side of Rockefeller Center

August 28, 2012
Rockefeller Center is one of the most recognized commercial properties in the world. Defining midtown Manhattan, Rockefeller Center encompasses the six square blocks between Fifth Avenue and the Avenue of the Americas from 48th to 51st Streets. The landmark property consists of approximately 8 million rentable sq ft in ten buildings with unique, internationally recognized architectural features.
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