home.social

#energysaving — Public Fediverse posts

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

  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. 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

  3. 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

  4. It's that time of the year. I'm once again harassing the management of "my" buildings to introduce some #EnergySaving decisions. Wish me luck.

    One useful trick: Asunto-osakeyhtiölaki, luku 6, 6 §.
    finlex.fi/fi/lainsaadanto/2009

    Practical tool: FMI heating degree days.
    en.ilmatieteenlaitos.fi/heatin

    (Housing associations here are limited companies so I go in order to: the general manager/isännöitsijä; the board of directors/hallitus; the general meeting of shareholders/yhtiökokous.)

    #ClimateChange #Finland

  5. A wave and delayed #ff for @GreenChristian who have just joined the fediverse. Website has been going since 2011 and over 1400 blog posts, zooms and articles on a range of topics including #nature #rewilding #food #biodiversity #EcoChurch #EthicalFinance #EnergySaving #Passivhaus #EcoAnxiety #ClimateCrisis #Adaptation as well as resources like prayers and sermons with a green theme greenchristian.org.uk/ #faith #christianity

  6. To which temperature do you heat your (living) room*?

    • the room you use most while you are at home and not sleeping
    • 2nd, improved poll because first one was only 1 day unintendedly
    • please round decimals (for Celsius °C see very first poll above)
    • pls boost for a better turnout :BoostOK:

    #heating #temperature #comfort #livingroom #energy #saving #oil #coal #energysaving #degree #Fahrenheit #poll #Umfrage #winter #winter2026 #boost #boostswelcome #roomtemperature #cozy #warm #freezing

  7. To which temperature do you heat your (living) room*?

    • the room you use most while you are at home and not sleeping
    • 2nd, improved poll because first one was only 1 day unintendedly
    • please round decimals (for Celsius °C see very first poll above)
    • pls boost for a better turnout :BoostOK:

    #heating #temperature #comfort #livingroom #energy #saving #oil #coal #energysaving #degree #Fahrenheit #poll #Umfrage #winter #winter2026 #boost #boostswelcome #roomtemperature #cozy #warm #freezing

  8. To which temperature do you heat your (living) room*?

    • the room you use most while you are at home and not sleeping
    • 2nd, improved poll because first one was only 1 day unintendedly
    • please round decimals (for Celsius °C see very first poll above)
    • pls boost for a better turnout :BoostOK:

    #heating #temperature #comfort #livingroom #energy #saving #oil #coal #energysaving #degree #Fahrenheit #poll #Umfrage #winter #winter2026 #boost #boostswelcome #roomtemperature #cozy #warm #freezing

  9. To which temperature do you heat your (living) room*?

    • the room you use most while you are at home and not sleeping
    • 2nd, improved poll because first one was only 1 day unintendedly
    • please round decimals (for Celsius °C see very first poll above)
    • pls boost for a better turnout :BoostOK:

    #heating #temperature #comfort #livingroom #energy #saving #oil #coal #energysaving #degree #Fahrenheit #poll #Umfrage #winter #winter2026 #boost #boostswelcome #roomtemperature #cozy #warm #freezing

  10. To which temperature do you heat your (living) room*?

    • the room you use most while you are at home and not sleeping
    • 2nd, improved poll because first one was only 1 day unintendedly
    • please round decimals (for Celsius °C see very first poll above)
    • pls boost for a better turnout :BoostOK:

    #heating #temperature #comfort #livingroom #energy #saving #oil #coal #energysaving #degree #Fahrenheit #poll #Umfrage #winter #winter2026 #boost #boostswelcome #roomtemperature #cozy #warm #freezing

  11. To which temperature do you heat your (living) room*?

    • the room you use most while you are at home and not sleeping (Celsius °C see above)

    #heating #temperature #comfort #livingroom #energy #saving #oil #coal #energysaving #Fahrenheit

  12. Santa told to slim down sleigh in festive efficiency crackdown

    Jamie Burns, from sustainability firm Ailsa, has swapped boardrooms for the North Pole this Christmas, crunching the numbers on Santa’s epic journey. And the results are enough to make even Rudolph break into a sweat.

    Reindeer fuel bill revealed

    According to Burns, Santa’s nine trusty reindeer need a staggering 24,000 calories each just to get airborne — six times their normal daily intake. That’s the equivalent of 108kg of grain and 108kg of CO₂ emissions before the sleigh even hits the first rooftop.

    Keeping the herd fuelled for the full world tour would mean chomping through 77,400 carrots — racking up nearly 1.1 tonnes of CO₂ in one night.

    And don’t even think about plugging in an electric sleigh. Burns says the stop‑start journey to 500 million homes would demand 2,400 GWh of energy — generating 1.14 million tonnes of CO₂e. That’s more than some countries pump out in a week.

    Santa needs to consider his reindeer fuel bill according to an energy expert

    Four ways Santa can save Christmas

    Burns has drawn up a cheeky four‑point plan to help Santa cut the fat this festive season:

    • Streamline the sleigh weight – lighter packaging, digital gifts and pre‑sorted loads could shave hundreds of kilos off the reindeer’s workload.
    • Upgrade aerodynamics – candy‑cane runners and sleigh rails could be slimmed down, with low‑friction coatings to cut drag.
    • Plan a smarter route – advanced mapping could stop Santa zig‑zagging across continents and wasting energy.
    • AI‑assisted flight optimisation – a digital co‑pilot could tweak speed, altitude and chimney sequences in real time.
    Kids can help Santa out too says our energy expert

    How kids can help

    And it’s not just Santa who needs to change his ways. Burns says children can play their part too.

    “Leave out energy‑dense carrot bundles clearly labelled for the reindeer,” he advised.

    “And keep Santa’s mince pie and milk within arm’s reach of the fireplace. Every second saved inside each house adds up when you’re visiting hundreds of millions of homes.”

    #Christmas #energy #energySaving #FatherChristmas #Reindeer #ReindeerFuelBill #Santa
  13. Did you know that turning off your lights when you leave a room can save energy and reduce your carbon footprint? It's such a small action but can make a big difference. What's one small change you've made to be more eco-friendly? 💡🌍 #EnergySaving #EcoFriendly #SmallChanges

  14. Did you know that turning off your lights when you leave a room can save energy and reduce your carbon footprint? It's such a small action but can make a big difference. What's one small change you've made to be more eco-friendly? 💡🌍 #EnergySaving #EcoFriendly #SmallChanges

  15. Did you know that turning off your lights when you leave a room can save energy and reduce your carbon footprint? It's such a small action but can make a big difference. What's one small change you've made to be more eco-friendly? 💡🌍 #EnergySaving #EcoFriendly #SmallChanges

  16. Did you know that turning off your lights when you leave a room can save energy and reduce your carbon footprint? It's such a small action but can make a big difference. What's one small change you've made to be more eco-friendly? 💡🌍

  17. Did you know that turning off your lights when you leave a room can save energy and reduce your carbon footprint? It's such a small action but can make a big difference. What's one small change you've made to be more eco-friendly? 💡🌍 #EnergySaving #EcoFriendly #SmallChanges

  18. Your All-Rounder Guide to SEAI Grants for Windows and Doors | Save Energy & Costs

    Read your everything guide to SEAI grants on windows and doors to help homeowners reduce the energy bills and improve the efficiency of the property. Understand eligibility criteria, grant value and application procedures. Get Sustainable upgrades to your home without compromising on savings through SEAI.
    Read more: easyfie.com/read-blog/2412175_

  19. How Smart Thermostat Installation Can Cut Your Energy Bill Fast?

    Learn how the installation of a smart thermostat can make your home instantly more efficient in terms of energy use and lower its monthly utility bills. In addition, smart thermostats are automated, have real-time monitoring, and automated scheduling, which allows you to eliminate energy waste and still achieve maximum comfort.
    Read more: guestcountry.com/How-Smart-The

  20. @Amgine Indeed. In our case we noticed that our space is often at 24 °C during winter, so the first step is simply to reduce the heating. That requires some work on the heat distribution: installing thermostats is easy, rebalancing the pressure a bit less so.

    #EnergySaving

  21. The Best Thermostat To Keep You Warm Without Running Up Electric Bills

    Saklakova/Getty Images It can be tempting to turn your thermostat up to keep your house toasty during the winter months, but if you do, you run the risk of increasing your electricity bills. If you're conscious about heating costs, installing a smart thermostat can be a great way to monitor and adjust your heating usage. The best smart thermostats will not only let you keep tabs on your property's ambient temperature while you're at home but will also let you adjust the temperature remotely […]

    onlinemarketingscoops.com/2025

  22. Sleep mode and Hibernate mode are both power-saving options in Windows, but they work differently. Sleep stores your session in RAM and uses a little power for quick resume. Hibernate saves data to the hard drive, uses no power. windows101tricks.com/hibernate
    #SleepMode #Hibernatemode #Tech #technology #powersaving #Energysaving #Laptop #computer

  23. Phil and I chat with Chris, the 'Reluctant Home Assistant Guy' - about his refreshing, no-BS smart home journey: starting with Hue lights, struggling with bridges & MyQ, and finally hitting real energy savings with @homeassistant.

    Give it a listen! 🔌🏡

    🎥 youtu.be/ZqmVNNI9J2U
    #HomeAssistant #SmartHome #EnergySaving

  24. 💡 Linux kernel i oszczędzanie energii

    Rafał Wysocki przedstawi podsystemy jądra Linuksa odpowiedzialne za ograniczanie zużycia energii, pokaże dostępne interfejsy do ich kontroli oraz omówi możliwe kierunki rozwoju w przyszłości.

    📍 Hotel przy Młynie, Rybnik
    📅 24–26 października 2025
    🔗 Zapisy: jesien.org/2025/zapisy

  25. This update is live NOW! (non-beta!)

    Of course, being a fan of power-saving and efficiency, I immediately activated it.

    It seems none of my currently installed games support it, though. (games have to actively support it so there's a proper way to downscale whatever saving they can use.)

    So, looking forward to tech YouTube channels with actual comparisons.

    I don't think many people will actually enable this setting, but I'll gladly give it a try!

    #Playstation #Gaming #PS5 #EnergyEfficency #PowerSaving #Consoles #EnergySaving

  26. R to @Energy4Europe: The overall EU #ElectricityConsumption ⚡️ of industrial fans is expected to be 31 TWh/year lower by 2030 with these #EUecodesign rules than a situation without any requirements.

    #EnergySaving =the annual electricity use of 10 mio electric 🚗 vehicles.

    europa.eu/!6kjgdF

    [2024-07-04 15:19 UTC]

  27. #Vietnamese officials have called on #Apple supplier #Foxconn to reduce power use by 30% at its assembly plants in the north of the country where there were #electricity #outages last year, two people familiar with the matter said.
    The request for #EnergySaving measures, which two other industry sources said was sent to multiple manufacturers, is precautionary & aimed at averting a repeat of last summer when #PowerShortage led to over a billion dollars in lost output.

    reuters.com/technology/apple-s

  28. Today I made the first release of Energy Impact . See github.com/aixigo/sonarqube-ja

    Based on scientific research the usage of and is discouraged due to higher leading to higher |s. 5% |s can be achieved.

    Now I'm searching for ways to measure energy consumption in Microbenchmark Harness () to start working on the higher hanging fruits/recommendations of the paper: doi.org/10.1007/s10664-021-099