Study shows ASHRAE energy standard almost unreachable in commercial buildings

The National Association of Industrial and Office Properties (NAIOP) released a report outlining the levels of energy efficiency that buildings can reach while remaining economically and logistically feasible.

02/27/2009


The National Association of Industrial and Office Properties (NAIOP) released a report Commercial Real Estate Development Assn. study was commissioned to determine if commercial buildings could achieve the reduction targets of 30 to 50% above the ASHRAE 90.1-2004 standard.

Conducted by ConSol, a California-based independent energy-modeling firm, the study used DOE’s EnergyPlus v2.2 building energy simulation program for modeling the building’s energy issues. The modeling included wall and roof insulations; varying levels of exterior glazing; higher-efficiency window assemblies; reduced air infiltration via the installation of an air barrier; reduced lighting power densities; energy efficient HVAC equipment; and photovoltaic electricity energy generation.

The study used a four-story, 95,000 sq ft, Classoaches. The building's construction costs would exceed a 10-year payback period. Additionally, the study said reaching a 50% reduction above the standard is not currently feasible.

By using the most efficient, current technologies to increase effectiveness, the maximum efficiency reached was 23% in the Chicago model. Overall, energy savings, cost increases and payback periods are:


“The study provides an unbiased insight into the energy targets practical to commercial development today,” said Thomas J. Bisacquino, NAIOP president. “Identifying an energy reduction level that is both environmentally responsible and equitable to the developer is essential in protecting the prosperity of commercial real estate.”

Study results show that employing solar generation technologies could close the gap between the efficiencies achieved in the study and the 30% above the ASHRAE 90.1 -2004 standard. However, at an installed cost of more than $1 million and a payback of up to 100 years, it far exceeds practical and economical limits.





Product of the Year
Consulting-Specifying Engineer's Product of the Year (POY) contest is the premier award for new products in the HVAC, fire, electrical, and...
40 Under Forty: Get Recognized
Consulting-Specifying Engineer magazine is dedicated to encouraging and recognizing the most talented young individuals...
MEP Giants Program
The MEP Giants program lists the top mechanical, electrical, plumbing, and fire protection engineering firms in the United States.
May 2018
40 Under 40 winners, fire and life safety, performance-based designs, and more
April 2018
VRFs, lighting controls, BIM coordination, and more
March 2018
Sizing water pipes, ASHRAE 90.1, recovering waste heat, and more
Data Centers: Impacts of Climate and Cooling Technology
This course focuses on climate analysis, appropriateness of cooling system selection, and combining cooling systems.
Safety First: Arc Flash 101
This course will help identify and reveal electrical hazards and identify the solutions to implementing and maintaining a safe work environment.
Critical Power: Hospital Electrical Systems
This course explains how maintaining power and communication systems through emergency power-generation systems is critical.
click me