lpg_bottles.yaml

lpg_bottles.yaml

# https://www.elgas.co.nz/resources/elgas-blog/138-nz-lpg-conversion-values-kg-litres-mj-a-kwh/
# Convert LPG litres to kWh: 1 L = 7.4 kWh of energy from LPG# https://www.elgas.com.au/for-home/gas-cylinder-sizes

# Gas bottle is about 1m tall, filled to 75% of capacity (750mm)
# 45 kg LPG cylinder capacity = 88 litres
# 88L * 0.75 = 66L
# 66L * 7.4 kWh/L = 488.4 kWh

# https://www.elgas.co.nz/resources/elgas-blog/275-how-is-lpg-measured-weight-liquid-gaseous-volume-energy-content-pressure
# LPG (propane) expands at 1.5% per 5.55°C temperature increase.

lpg_bottles:
  sensor:
    - platform: filter
      unique_id: filtered_lpg_bottle_sensor_distance
      name: "Filtered LPG Bottle Sensor Distance"
      entity_id: sensor.garage_gas_bottle_receiver_lpg_bottle_sensor_distance
      filters:
        - filter: outlier
          window_size: 4
          radius: 10
        - filter: lowpass
          time_constant: 10
        - filter: time_simple_moving_average
          window_size: "00:30"
          precision: 2

    - platform: template
      sensors:
        lpg_percentage_remaining:
          unique_id: lpg_percentage_remaining
          friendly_name: "LPG Percentage Remaining"
          unit_of_measurement: "%"
          value_template: >
            {% if has_value('sensor.filtered_lpg_bottle_sensor_distance') %}
              {{ (((states('sensor.filtered_lpg_bottle_sensor_distance') | float) / 750.0) * 100) | round }}
            {% endif %}

        total_lpg_use_litres:
          unique_id: total_lpg_use_litres
          friendly_name: "Total LPG Use Litres"
          unit_of_measurement: "L"
          value_template: >
            {% if has_value('sensor.filtered_lpg_bottle_sensor_distance') %}
              {{ ((1 - ((states('sensor.filtered_lpg_bottle_sensor_distance') | float) / 750.0)) * 66) | round(2) }}
            {% endif %}

        lpg_remaining_litres:
          unique_id: lpg_remaining_litres
          friendly_name: "LPG Remaining Litres"
          unit_of_measurement: "L"
          value_template: >
            {% if has_value('sensor.total_lpg_use_litres') %}
              {{ (66.0 - (states('sensor.total_lpg_use_litres') | float)) | round(2) }}
            {% endif %}

        total_lpg_use_kwh:
          unique_id: total_lpg_use_kwh
          friendly_name: "Total LPG Use"
          unit_of_measurement: "kWh"
          value_template: >
            {% if has_value('sensor.total_lpg_use_litres') %}
              {{ ((states('sensor.total_lpg_use_litres') | float) * 7.4) | round(2) }}
            {% endif %}

        lpg_remaining_kwh:
          unique_id: lpg_remaining_kwh
          friendly_name: "LPG Remaining"
          unit_of_measurement: "kWh"
          value_template: >
            {% if has_value('sensor.lpg_remaining_litres') %}
              {{ ((states('sensor.lpg_remaining_litres') | float) * 7.4) | round(2) }}
            {% endif %}

        lpg_days_remaining:
          unique_id: lpg_days_remaining
          friendly_name: "LPG Days Remaining"
          unit_of_measurement: "days"
          value_template: >
            {% if has_value('sensor.lpg_remaining_kwh') and has_value('sensor.average_daily_lpg_kwh_use') and (states('sensor.average_daily_lpg_kwh_use') | float) > 0 %}
              {{ ((states('sensor.lpg_remaining_kwh') | float) / (states('sensor.average_daily_lpg_kwh_use') | float)) | round(2) }}
            {% endif %}

    - platform: statistics
      name: "Average Daily LPG kWh Use"
      entity_id: sensor.daily_lpg_kwh_use_max
      state_characteristic: mean
      max_age:
        days: 14

  utility_meter:
    daily_lpg_kwh_use:
      source: sensor.total_lpg_use_kwh
      name: Daily LPG kWh Use
      cycle: daily
    weekly_lpg_kwh_use:
      source: sensor.total_lpg_use_kwh
      name: Weekly LPG kWh Use
      cycle: weekly
    monthly_lpg_kwh_use:
      source: sensor.total_lpg_use_kwh
      name: Monthly LPG kWh Use
      cycle: monthly
    yearly_lpg_kwh_use:
      source: sensor.total_lpg_use_kwh
      name: Yearly LPG kWh Use
      cycle: yearly

  template:
    - trigger:
        - platform: time
          at: "23:59:59"
      sensor:
        - name: "Daily LPG kWh Use Max"
          unit_of_measurement: "kWh"
          state: "{{ states('sensor.daily_lpg_kwh_use') }}"