#energy-saving — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #energy-saving, aggregated by home.social.
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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.
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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%
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What Is Transferred
heat (primary)
sometimes moisture (in enthalpy units)
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Efficiency Example
outside: 0°C
indoor: +22°C
after recovery: ~16–20°C
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Advantages
reduced heating energy demand
continuous ventilation without major heat loss
improved indoor air quality
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Limitations
frost formation in winter (needs bypass or preheater)
filter maintenance required
upfront cost
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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
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Power cuts disrupting your routine? Discover 7 affordable hacks to stay prepared https://english.mathrubhumi.com/lifestyle/load-shedding-survival-guide-simple-hacks-power-cuts-i0qtmskt?utm_source=dlvr.it&utm_medium=mastodon #LoadShedding #PowerCuts #LifestyleHacks #EnergySaving #StayPrepared
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AC isn’t the only culprit: What’s really increasing your summer electricity bill https://english.mathrubhumi.com/lifestyle/home-and-decor/hidden-appliances-summer-electricity-bill-ac-fridge-fan-energy-usage-tips-fsffdevr?utm_source=dlvr.it&utm_medium=mastodon #ElectricityBill #SummerHeat #EnergySaving #HomeAppliances #ACTips
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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 §.
https://www.finlex.fi/fi/lainsaadanto/2009/1599#part_3__chp_6__sec_6Practical tool: FMI heating degree days.
https://en.ilmatieteenlaitos.fi/heating-degree-days?7r87D3pXt5h3S3AkDpM0uF_q=y%253D2025(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.)
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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 https://greenchristian.org.uk/ #faith #christianity
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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
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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
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Samsung climatisation
https://www.climshop.com/168-climatisation-samsung
#airconditioning #airconditioner #ac #hvac #hvacsystem #hvaclife #hvacinstall #hvacmaintenance #hvacrepair #cooling #climatecontrol #coolingtechnology #energyefficiency #energysaving #inverter #smartac #smartclimate #smarthome #homecomfort #indoorcomfort #temperaturecontrol #coolingsystem #heatandcool #airquality #cleanair #ventilation #summercooling #ecofriendly #greenenergy #lowenergy #sustainableliving #commercialhvac #residentialhvac
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Upcycle your worn out denims into a draught excluder
https://www.pillarboxblue.com/denim-diy-draught-excluder/#SolarPunkSunday #Crafts #UpCycling #ReUse #Textiles #DIY #EnergySaving #DraughtExcluders
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Which Magazine on Draught Excluders:
"Our test to find the best draught excluder for a front door revealed that a simple and free DIY solution outperformed the rest."
https://www.which.co.uk/news/article/this-best-draught-excluder-for-your-front-door-wont-cost-you-a-penny-aSL4J6x7HEpf -
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
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@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.
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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. https://windows101tricks.com/hibernate-vs-sleep-mode/
#SleepMode #Hibernatemode #Tech #technology #powersaving #Energysaving #Laptop #computer -
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! 🔌🏡
🎥 https://youtu.be/ZqmVNNI9J2U
#HomeAssistant #SmartHome #EnergySaving -
💡 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: https://jesien.org/2025/zapisy -
Cut your energy bills by a third? No, these ‘energy-saving plugs’ will cause nothing but hassle https://www.theguardian.com/money/2025/oct/05/cut-your-energy-bills-by-a-third-no-these-energy-saving-plugs-will-cause-nothing-but-hassle 💡 #Scam #SocialMedia #EnergySaving #EnergyBills #EnergyEfficiency
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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