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#climatecontrol — Public Fediverse posts

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  1. Heat Recovery Ventilator (HRV) — Operating Principle

    A recuperator (heat recovery unit) transfers heat from exhaust air to incoming fresh air without mixing the two streams.

    ---

    How It Works

    Two airflows:

    Exhaust air (warm, from indoors)

    Supply air (cold, from outside)

    They pass through a heat exchanger:

    separated by plates or channels

    no direct mixing

    heat transfers through the material (conduction)

    Result: → supply air is preheated
    → exhaust air is cooled
    → overall heat loss is reduced

    ---

    Types of Recuperators

    1. Plate Heat Exchanger

    aluminum or plastic plates

    efficiency: ~60–90%

    no moving parts

    2. Rotary (Wheel) Heat Exchanger

    rotating drum

    transfers heat and some moisture

    efficiency: up to ~85–90%

    3. Counterflow Heat Exchanger

    air streams move in opposite directions

    highest efficiency: up to ~95%

    ---

    What Is Transferred

    heat (primary)

    sometimes moisture (in enthalpy units)

    ---

    Efficiency Example

    outside: 0°C

    indoor: +22°C

    after recovery: ~16–20°C

    ---

    Advantages

    reduced heating energy demand

    continuous ventilation without major heat loss

    improved indoor air quality

    ---

    Limitations

    frost formation in winter (needs bypass or preheater)

    filter maintenance required

    upfront cost

    ---

    Core Idea

    A recuperator doesn’t generate heat — it recovers and reuses it.

    #HVAC #HeatRecovery #HRV #ERV #EnergyEfficiency #Ventilation #IndoorAirQuality #AirExchange #HeatExchanger #SustainableLiving #GreenBuilding #EnergySaving #HomeComfort #SmartHome #BuildingEngineering #ClimateControl #EcoTech #Airflow #FreshAir #LowEnergy #PassiveHouse #NetZero #HomeImprovement #Engineering #CleanAir

  2. Webinar on Historic House Climate Control.
    New England Museum Association Webinar.
    Don’t Touch the Thermostat!: Temperature and Climate Control for Historic Buildings and Collections
    December 4, 2025, 1:00 p.m. (AZ)

    nemanet.org/event/ecop_dec25 #globalmuseum #webinar #Climatecontrol

  3. Webinar on Historic House Climate Control.
    New England Museum Association Webinar.
    Don’t Touch the Thermostat!: Temperature and Climate Control for Historic Buildings and Collections
    December 4, 2025, 1:00 p.m. (AZ)

    nemanet.org/event/ecop_dec25 #globalmuseum #webinar #Climatecontrol

  4. Using elevation and northern vs. southern New Mexico temperature variations to find optimal "Goldilocks" conditions. 😆

    #temperature #climatecontrol #NewMexico

  5. Using elevation and northern vs. southern New Mexico temperature variations to find optimal "Goldilocks" conditions. 😆

    #temperature #climatecontrol #NewMexico

  6. Welcome to SubTropolis: the Limestone Mine Turned Climate-Controlled Business Complex - After extracting all the useful stuff from a mine, you are often left with a lot o... - hackaday.com/2024/11/10/welcom #climatecontrol #uncategorized #cave

  7. Welcome to SubTropolis: the Limestone Mine Turned Climate-Controlled Business Complex - After extracting all the useful stuff from a mine, you are often left with a lot o... - hackaday.com/2024/11/10/welcom #climatecontrol #uncategorized #cave

  8. For a PID controller, would it suffice to calculate the accumulated error (I) as follows?

    I(0)=kI * e(0)
    I = I + (kI * e - I) * dt / SecondsInHour

    This would drive the integral part towards the current observed error, but won’t accumulate large errors over time - and settle on the error value after an hour.

    #Thermostat #HomeAssistant #ClimateControl #SmartHome

  9. #hurricanemilton #marjorietaylorgreene #socialmedia #hurricanes #weather #weathercontrol #usa #climatecontrol
    It must be a full moon as Taylor Greene’s ranting again. Her social media account apparently contains ridiculous posts claiming the US government’s controlling the weather.
    If it’s so, could I formally request the development of a Taylor Green tracking cloud that follows her around and pisses on her wherever she goes.

    No, Hurricane Milton was not 'engineered' bbc.com/news/articles/cx2lyzw7

  10. #hurricanemilton #marjorietaylorgreene #socialmedia #hurricanes #weather #weathercontrol #climatecontrol
    It must be a full moon as Taylor Greene’s ranting again. Her social media account apparently contains ridiculous posts claiming the US government’s controlling the weather.
    If it’s so, could I formally request the development of a Taylor Green tracking rain cloud that follows her around and pisses on her wherever she goes.

    No, Hurricane Milton was not 'engineered' bbc.com/news/articles/cx2lyzw7

  11. The Tropical Atrium is a multifunctional space for Pod 1, maintaining 60-90°F and 40-70% humidity. It supports food growth, rainwater capture, and recycled heat from showers. Heating, cooling, and humidity are controlled with solar design, thermal mass, venting, and adaptable features for various climates.

    #SustainableLiving #TropicalAtrium #GreenBuilding #PassiveDesign #RenewableEnergy #WaterRecycling #ClimateControl #OpenSourceDesign #Permaculture #EcoArchitecture

  12. The New Gods of Weather Can Make Rain on Demand—or So They Want You to Believe - In a gold-trimmed command center on the outskirts of Abu Dhabi, scientists are seeking to... - wired.com/story/new-gods-weath #science/environment #climatecontrol #thebigstory #science

  13. The New Gods of Weather Can Make Rain on Demand—or So They Want You to Believe - In a gold-trimmed command center on the outskirts of Abu Dhabi, scientists are seeking to... - wired.com/story/new-gods-weath #science/environment #climatecontrol #thebigstory #science

  14. How to Stay Cool Without Warming the Planet - The race is on to create climate-friendly air-con technology. - wired.com/story/aircon-climate #science/environment #climatecontrol #business

  15. How to Stay Cool Without Warming the Planet - The race is on to create climate-friendly air-con technology. - wired.com/story/aircon-climate #science/environment #climatecontrol #business

  16. Air conditioning is one of the greatest inventions of the 20th Century. It’s also killing the 21st - When did indoor air become cold and clean?
    Air conditioning is one of those invent... - feedproxy.google.com/~r/Techcr #airconditioning #climatecontrol #climatechange #bookreview #realestate #greentech