"Zero Net Energy (ZNE) is the future, and in a growing number of places the present, of building design and energy policy. A growing strategy to get to ZNE is to separate the building’s heating/cooling from the ventilation/dehumidification. Design firms and owners are striving to meet heating, ventilation and air-conditioning (HVAC) loads with optimum comfort and minimal energy. Radiant systems can provide heating and cooling through pipes while ventilation and any humidity control requirements are efficiently met by a Dedicated Outdoor Air System (DOAS). This guide provides an overview of Radiant Heating and Cooling + DOAS systems."
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How to determine the amount of continuous insulation required by codes, while still retarding water vapor according to climate zone locations
"While ASHRAE 90.1 has been pushing continuous insulation (CI) for the past decade, the building codes are catching on. And now that the U.S. Department of Energy (DoE) has mandated all states to adopt a commercial building energy code that meets or exceeds ASHRAE Standard 90.1-2010, CI specifications are really being cast into the spotlight."
In the cold climate of the upper Midwest, air-source VRF systems have difficulty meeting heating loads when the outdoor temperatures drop below -5ºF. Because of this difficulty during common cold spells, they are either oversized (adding to system cost) or supplemental heat is added (adding to operating cost). Cold temperatures can also cause frost issues around outdoor units, as well as compressor failure. A VRF system served by a water loop—in place of air—does not have these issues, making the technology more practical and effective in cold climates such as the upper Midwest. A water-source VRF system can be connected to a boiler and cooling tower or, for even higher performance, a ground heat exchanger.
This document provides an example request for proposal (RFP) created by the U.S. Army Corps of Engineers, Omaha District in June 2012 for Fort Carson Net Zero Army Barracks. The RFP has been annotated by the National Renewable Energy Lab (NREL) to demonstrate the project’s steps that follow NREL and DOE’s Energy-Performance-Based Acquisition process.
This guide presents a set of 15 best practices for owners, designers, and construction teams to reach high-performance goals and maintain a competitive budget. They are based on the recent experiences of the Research Support Facility owner and design-build team, and show that achieving this outcome requires that all key integrated team members understand their opportunities to control capital costs.
Presentation by NREL researcher Shanti Pless about Controlling Capital Costs in High-Performance Buildings Using a Performance Based Design-Build Process
The U.S. Department of Energy’s National Renewable Energy Laboratory is devising a new design-build project delivery model for fast-tracked, net-zero energy building. The process is progressive, performance-based design-build.
Presentation slides from Integrated Design presentation given at the NASA Net-Zero Energy workshop June 5-6, 2012.
Design Team Commitment: Contractor Perspective on an Integrated Design Process presentation given at the NASA Net-Zero Energy workshop June 5-6, 2012