For use with the PRM of Standard 90.1-2019, software shall accept input for and be capable of modeling a minimum of 10 thermal zones, each with its own control of temperature. The simulation program shall be able to either (1) directly determine the proposed building performance and baseline building performance or (2) produce hourly reports of energy use by an energy source suitable for determining the proposed building performance and baseline building performance using a separate calculation engine. The simulation program shall be capable of performing design load calculations to determine required HVAC equipment capacities and air and water flow rates in accordance with generally accepted engineering standards and handbooks, for example, ASHRAE Handbook—Fundamentals (ASHRAE 2017).
90.1-2019