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#freshair — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #freshair, aggregated by home.social.

  1. Maoz Inon and Aziz Abu Sarah are more realist that you might think at first glance. The authors of The Future is Peace speak on Fresh Air.

    #FreshAir #Israel #Palestine #Peacemaking 🎧

    npr.org/2026/04/16/nx-s1-57878

  2. Maoz Inon and Aziz Abu Sarah are more realist that you might think at first glance. The authors of The Future is Peace speak on Fresh Air.

    #FreshAir #Israel #Palestine #Peacemaking 🎧

    npr.org/2026/04/16/nx-s1-57878

  3. Maoz Inon and Aziz Abu Sarah are more realist that you might think at first glance. The authors of The Future is Peace speak on Fresh Air.

    #FreshAir #Israel #Palestine #Peacemaking 🎧

    npr.org/2026/04/16/nx-s1-57878

  4. Maoz Inon and Aziz Abu Sarah are more realist that you might think at first glance. The authors of The Future is Peace speak on Fresh Air.

    #FreshAir #Israel #Palestine #Peacemaking 🎧

    npr.org/2026/04/16/nx-s1-57878

  5. Maoz Inon and Aziz Abu Sarah are more realist that you might think at first glance. The authors of The Future is Peace speak on Fresh Air.

    #FreshAir #Israel #Palestine #Peacemaking 🎧

    npr.org/2026/04/16/nx-s1-57878

  6. 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

  7. Should We All Be ‘#HouseBurping’?

    The German practice of “#lüften” is gaining traction on social media. It may improve your home #AirQuality.

    By Dorie Chevlen, Jan. 29, 2026

    Excerpt: "Experts say lüften actually works. The Environmental Protection Agency recommends opening windows to reduce the concentration of volatile organic compounds [#VOCs] in the home, which are released by a vast array of household items, including furniture, mattresses, cosmetics and cleaning products. These compounds can cause adverse reactions like headaches, itchy eyes and breathing problems.

    "According to Dr. Parham Azimi, research associate at the Harvard T.H. Chan School of Public Health, there’s also reason to believe airing out a home regularly could help control household #mold. In his research, keeping windows closed correlated with a higher likelihood of mold.

    "Dr. Joshua Nosanchuk, a professor and microbiology researcher at Albert Einstein College of Medicine and an infectious disease physician at Montefiore Health System, said that better #ventilation could eliminate many airborne toxins that cause people irritation in the U.S. 'Part of the problem is that we hermetically seal our houses. We don’t want the air conditioning to get out and we don’t want the heat to get it out,' he said. 'No one opens their windows.' "

    Learn more:
    nytimes.com/2026/01/29/realest

    Archived version:
    archive.ph/pWByt

    #SolarPunkSunday #FreshAir #Nature #VentilateYourHomes #AirExchange