ServiceWaterHeatingEquipment Efficiency Metrics

[KarenWGard]

In order to bring the ServiceWaterHeatingEquipment in line with other large HVAC equipment such as Chillers and Boilers, suggest adding a ServiceWaterHeatingEfficiencyMetricOptions

The new EfficiencyMetricOptions would include the following fields that are currently listed under ServiceWaterHeatingEquipment:

THERMAL_EFFICIENCY STANDBY_LOSS_FRACTION UNIFORM_ENERGY_FACTOR

We would also like to add:

STANDBY_LOSS_ENERGY -- units of Watts

For conversion between STANDBY_LOSS_ENERGY (btu/hr) and STANDBY_LOSS_FRACTION, use the formula given here:

https://www.energy.ca.gov/sites/default/files/2021-11/CBECC-Res_UserManual_2019.2.0_ada.pdf 9.6.4.8

To complete the suggested change, in ServiceWaterHeatingEquipment, remove the fields:

thermal_efficiency standby_loss_fraction uniform_energy_factor

add these fields:

efficiency_metric_types efficiency_metric_values