A Methodology to Develop Monthly Energy Use Models From Utility Billing Data For Seasonally Scheduled Buildings: Application to Schools

摘要

The measured energy savings from retrofits in buildings in the Texas LoanSTARprogram are determined as the difference between the energy consumption predicted bya baseline model and the measured energy consumption during the post-retrofit period.Savings measurement for buildings such as primary and secondary schools is verydifficult due to the special operating schedules of these buildings. Currently, savingsare often determined by simple pre-post utility bill comparison; they may also bedetermined with two separate models for the baseline: a 3-P model for non-summermonths, and a mean model for the summer months. (Landman 1996).This thesis proposes a methodology for developing baseline models of energy usefor buildings such as schools which have important daily and seasonal variations inoccupancy. The method utilizes utility billing data, but also explicitly incorporatesoccupancy rate, permitting a generalized model which retains the distinction betweenenergy use levels during occupied and unoccupied days of the year. The proposed methodology has been evaluated against the one proposed by Landman for 10 schoolsin Texas.