Analysis of Potential Benefits and Costs of Adopting ASHRAE Standard 90.1-1999 as a Commercial Building Energy Code in Michigan [report]

Katherine A. Cort, David B. Belzer, Mark A. Halverson, Eric E. Richman, David W. Winiarski
2002 unpublished
ph: (865) 576-8401 fax: (865) 576-5728 email: Available to the public from the National Technical Information Service, U.S. Department of Commerce, 5285 Port Royal Rd., Springfield, VA 22161 ph: (800) 553-6847 fax: (703) 605-6900 email: online ordering: This document was printed on recycled paper. ANSI/ASHRAE/IESNA Standard 90.1-1999 Energy Standard for Buildings except Low-Rise Residential Buildings (hereafter
more » ... dings (hereafter referred to as ASHRAE 90.1-1999 or 90.1-1999 was developed in an effort to set minimum requirements for the energy efficient design and construction of new commercial buildings. The State of Michigan is considering adopting ASHRAE 90.1-1999 as its commercial building energy code. In an effort to evaluate whether or not this is an appropriate code for the state, the potential benefits and costs of adopting this standard are considered in this report. Both qualitative and quantitative benefits and costs are assessed. Energy and economic impacts are estimated using the Building Loads Analysis and System Thermodynamics (BLAST) simulations combined with a Life-Cycle Cost (LCC) approach to assess corresponding economic costs and benefits. Michigan currently has ASHRAE Standard 90A-1980 as the statewide commercial energy code; thus, many of the requirements of ASHRAE 90A-1980 were used as a baseline for simulations. Executive Summary The energy simulation and economic results of the building prototypes chosen for this study suggest that adopting ASHRAE 90.1-1999 as the commercial building energy code in Michigan would provide positive net benefits to the state relative to the building and design requirements prescribed in ASHRAE 90A-1980. For most requirements, the adoption of ASHRAE 90.1-1999 increases first costs, but decreases annual energy costs. The overall impact is that the ASHRAE 90.1-1999 standard has positive net benefits relative to the requirements of ASHRAE 90A-1980. A discussion is also provided to explain additional decreases in energy that result from ASHRAE 90.1-1999 requirements that were not included in the quantitative modeling analysis. In addition, if ASHRAE 90.1-1999 were adopted as code in its entirety, which includes the addition of commercial building renovation, it could further increase the energy efficiency of commercial buildings. Finally, ASHRAE 90.1-1999 provides some qualitative improvements over the ASHRAE 90.1-1989 standard that makes adoption more desirable. For example, ASHRAE 90.1-1999 is written in more mandatory, enforceable language, which makes it easier to enforce. It also improves the format of many of the reference tables so that it is easier to follow and, therefore, easier with which to comply. ii
doi:10.2172/971902 fatcat:qdgafeo2wnfetgsmlhgatodxtu