This sensor component calculates the efficiency (%) of your evaporative air conditioning system given sensory inputs such as temperature, humidity and atmospheric pressure. It allows you to run experiments to determine the optimal fan speed for evaporative air conditioner.
Entity Card with Attributes
Efficiency vs Outdoor, Indoor and Wet Bulb Temperature over Time
- platform: cooler_efficiency
name: "Cooling Efficiency"
outdoor_temp: sensor.outside_temp
indoor_temp: sensor.aircon_temp
indoor_hum: sensor.aircon_hum
wet_bulb_temp: sensor.meteorologic_metrics
csv_notifier: notify.aircon_data
experiment_notifier: notify.matrix_notify # for experiment notifications
entities: # will be logged to `csv_notifier`
- sensor.bedroom_temp
Note that this component requires the wet bulb temperature (WBT, a metric measured by a temperature sensor wrapped in a wet cloth). The purpose of this is to measure the cooling effect of evaporation. Since this is impractical to measure without special equipment, I have created another component called meterologic_metrics which calculates the WBT given the temperature, humidity and pressure at your location.
The simplest way to process is to install both components and use one as the input to the other.
Meterologic Metrics Component on Github
notify:
- name: aircon_data
platform: file
filename: data/aircon_efficiency_data.csv
timestamp: false
sensor:
- platform: cooler_efficiency
name: "Aircon Efficiency"
outdoor_temp: sensor.outside_temp
indoor_temp: sensor.bedroom_temp
wet_bulb_temp: sensor.meteorologic_metrics
csv_notifier: notify.aircon_data
entities:
- sensor.meteorologic_metrics
- sensor.aircon_efficiency
- platform: template
sensors:
aircon_optimal_temp_delta:
value_template: "{{ state_attr('sensor.aircon_efficiency', 'optimal temp delta') | float }}"
unit_of_measurement: "°C"
aircon_actual_temp_delta:
value_template: "{{ state_attr('sensor.aircon_efficiency', 'actual temp delta') | float }}"
unit_of_measurement: "°C"
aircon_min_possible_temp:
value_template: "{{ state_attr('sensor.aircon_efficiency', 'wet bulb temp') | float }}"
unit_of_measurement: "°C"
- platform: meteorologic_metrics
name: "Meteorologic Metrics"
temp: sensor.outside_temp
hum: sensor.outside_hum
pressure: sensor.pixel_2_xl_pressure_sensor