Option 3: Prescriptive—Advanced Building Core Performance Guide
Option 3: Prescriptive—Advanced Building Core Performance Guide
Option 3: Prescriptive—Advanced Building Core Performance Guide
Revisit the Advanced Energy Design Guide (AEDG) checklist to ensure that the design meets the prescriptive requirements.
Ensure that all prescriptive requirements are incorporated into the design by the end of the design development stage.
Option 2: Prescriptive Compliance Path—ASHRAE Advanced Energy Design Guide
If pursuing ECM for non-regulated loads, calculate energy saving for each measure separately if you are, for example, installing an energy-efficient elevator instead of a typical one so that the reduction would contribute to total building energy savings. Calculate the anticipated energy use of the typical elevator in kBTUs or kWh. Using the same occupancy load, calculate the energy use of the efficient elevator. Incorporate the savings into design case energy use within the PRM. Refer to the ECM strategy for detailed calculation guidelines.
Complete at least half of the energy modeling effort by the end of the design development stage. Help the design team to finalize strategy through intensive, early efforts in energy modeling. Once the team has a design direction, the modeler can develop a second model during the construction documents phase for final confirmation.
A cost-benefit analysis can help the owner understand the return on investment of big-ticket, energy-conserving equipment that lowers operating energy bills with a quick payback.
If your project is pursuing renewable energy, the energy generated is accounted for by using the PRM. These results provide information about whether the energy is contributing to EAc2: Onsite Renewable Energy.
Perform daylight calculations in conjunction with energy modeling to balance the potentially competing goals of more daylight versus higher solar-heat gain resulting in high cooling loads.
Residential and hospitality projects that use low-flow showers, lavatories, and kitchen sinks (contributing to WEc3) benefit from lower energy use due to reduced overall demand for hot water. However, for energy-savings calculations, these are considered process loads that must be modeled as identical in baseline and design cases, or you have the choice of demonstrating the savings with ECM for process loads.