Building Technologies Research and Integration Center, Direct Evaporative Precooling Model and Analysis, Development and Simulations of an Improved Algorithm for Import into EnergyPlus and Applications to Commercial Buildings in the United States.

摘要

In this report, we describe the simpler algorithm and provide the metrics that show how it is an improvement over the algorithm used in EnergyPlus version 5.0.0. We then generate performance values that can be directly input into EnergyPlus for simulations. By this process, we examine the annual and peak energy reductions of three building types (medium office, secondary school and supermarket) in 16 locations within the U.S. These three building types were chosen because they have distinctive loads, zones, and equipment. In addition to performing the requisite calculations, computer algorithms were developed for use with EnergyPlus to simulate the performance of commercial units under a variety of operating parameters. Performance maps were generated and estimated energy savings and peak demand reductions were calculated. Performance curves that were used in these EnergyPlus simulations were shared with the National Renewable Energy Laboratory (NREL) and with the Florida Solar Energy Center (FSEC) for possible inclusion in the next update to EnergyPlus.