This page features the data dictionary for the Heat Pump and Heat Pump Water Heater Field Validation Database. These definitions provides information about how the database is structured. Details are provided for what measurements are collected and the units. Additionally, a template can be downloaded here that can be used for data collection and can be directly uploaded to the database.
| Measurement | Field Description | Example Value(s) | HP | CCHP | HPWH |
|---|---|---|---|---|---|
| site_id | Unique ID for the building. There may be multiple sites per study. This should be alpha-numeric value. | site1, site2, site3 | X | X | X |
| unit_id | Unique ID for a HP or HPWH outdoor unit. There may be multiple outdoor units per site. This should be numeric value. | 1, 2, 3 | X | X | X |
| local_datetime | Timestamp in time zone where data was collected. Format as MM/DD/YYYY HH:MM:SS-XX:XX with UTC timezone offset. | 10/15/2022 02:00:00-07:00 | X | X | X |
| datetime_utc | Timestamp in UTC time zone. Format should be in MM/DD/YYYY HH:MM:SS | 10/15/2022 02:00:00 | X | X | X |
| indoor_set_point_F | Temperature of the thermostat set point for indoors. | 72 | X | X | X |
| thermostat_temp_F | Indoor dry-bulb air temperature at the thermostat. | 72 | X | X | X |
| thermostat_RH | Indoor relative humidity at the thermostat. | 20 | X | X | X |
| OA_temp_F | Average dry bulb outside air temperature in fahrenheit. | 92 | X | X | X |
| OA_RH | Outside air relative humidity percentage. | 25 | X | X | X |
| HP_system_pwr_kW | Average Heat Pump Power in kW. | X | X | ||
| ODU_pwr_kW | Average Fan Power in kW | X | X | ||
| AHU_pwr_kW | Total Air Handler Power in kW | X | X | ||
| auxheat_pwr_kW | Auxiliary heating power in kW. | X | X | ||
| HPWH_system_pwr_kW | System power of the HPWH. | 0.1 | X | ||
| HVAC_system_power_kW | System power of the HVAC unit. | 0.1 | X | X | |
| HVAC_indoor_unit_power_kW | System power of the indoor unit. | 0.1 | X | X | |
| HVAC_outdoor_unit_power_kW | System power of the outdoor unit. | 0.1 | X | X | |
| HVAC_mixed_air_temp_F | Air temperature of the HVAC mixed air. | 80 | X | X | |
| backup_system_kW | System power of the outdoor unit. | 0.1 | X | X | |
| SA_temp_blower_cabinet_F | Supply air temperature in deg F. | X | X | ||
| SA_RH_blower_cabinet | Supply air temperature in deg F. | X | X | ||
| SA_temp_duct1_F | Supply air temperature in deg F. | X | X | ||
| SA_RH_duct1 | Supply air relative humidity in %. | X | X | ||
| SA_temp_duct2_F | Supply air temperature in deg F. | X | X | ||
| SA_RH_duct2 | Supply air relative humidity in %. | X | X | ||
| SA_temp_duct3_F | Supply air temperature in deg F. | X | X | ||
| SA_RH_duct3 | Supply air relative humidity in %. | X | X | ||
| SA_temp_duct4_F | Supply air temperature in deg F. | X | X | ||
| SA_RH_duct4 | Supply air relative humidity in %. | X | X | ||
| RA_temp_F | Return air temperature in deg F. | X | X | ||
| RA_RH | Supply air relative humidity in %. | X | X | ||
| AHU_ambient_temp_F | Ambient temperature near the air handling unit in deg F. | X | X | ||
| AHU_ambient_RH | Ambient air relative humidity near the air handling unit in %. | X | X | ||
| room1_temp_F | Indoor temperature in deg F. | X | X | ||
| room1_RH | Indoor relative humidity in %. | X | X | ||
| room2_temp_F | Indoor temperature in deg F. | X | X | ||
| room2_RH | Indoor relative humidity in %. | X | X | ||
| room3_temp_F | Indoor temperature in deg F. | X | X | ||
| room3_RH | Indoor relative humidity in %. | X | X | ||
| room4_temp_F | Indoor temperature in deg F. | X | X | ||
| room4_RH | Indoor relative humidity in %. | X | X | ||
| reversing_valve_signal_V | Reversing Valve status. | X | |||
| mixing_valve_set_point_temp_F | Constant set point of the mixing valve in the HPWH. | 40 | X | ||
| coil_split_temp_F | *Residential HP (central) | 125 | X | X | |
| inlet_cold_water_temp_F | Temperature of cold-water entering water heater. | 40 | X | ||
| inlet_hot_water_temp_F | Temperature of hot water entering water heater tank. | X | |||
| inlet_air_temp_F | Temperature of air entering the heat pump. | 125 | X | X | |
| inlet_RH | Relative humidity of air entering the heat pump. | 40 | X | X | |
| outlet_hot_water_temp_F | Temperature of hot water exiting water heater tank. | 130 | X | ||
| exhaust_air_temp_F | Temperature of air exiting the heat pump. | X | X | ||
| operating_mode | Operating mode of the unit. | X | X | X | |
| seconds_non_zero_in_hour | Description | 20 | X | X | X |