There was some left over glycol from flushing the #solarheat pipes the other day. Not sure what the “dirt" is in the liquid, but it sure settled to the bottom of the bucket in an interesting pattern.

Interesting solar hot water heating issue today that I just happened to catch by accident. I heard the electric heating element turn on even though it’s a clear, sunny day. Checked #homeassistant and the device panel, temperature above 200˚F, but return pipe was barely warm. Increased pump speed, no help. Hooked up hoses to drain the glycol into bucket while pumping it back in another connector and a lot of trapped air was released. It had a vapor lock.
Have hit this issue a couple times in recent years. Something in the system is letting air leak in. It’s an old unit, the electric company gave it to previous owners in the late 70’s’ or early 80's in exchange for meter readings. I've changed out the tank a couple times, but that's about it.
#solarheat

RT @solarthermal: #SolarHeat reduces the pressure on #biomass in #DistrictHeating: A real case from 🇩🇰

Watch the recording of the 1st #SolarDistrictHeating webinar with @eumayors & @IEASHC: https://eu-mayors.ec.europa.eu/en/decarbonising-your-citys-district-heating-system-with-solar-heating-advantages-and-success-stories
@SolarHeat_EU @HeatChangers https://t.co/x7ByrTvlfM

🐦🔗: https://n.respublicae.eu/eumayors/status/1666820618577387529

RT @solarthermal: #SolarHeat seasonal #storage: A win-win for #DistrictHeating 👏👏

How cities can decarbonise their #DistrictHeating with #SolarHeat? Join the webinar by @eumayors & @IEASHC
🗓️June 5 (11:00-12:30)
Register here: https://eu-mayors.ec.europa.eu/en/solar-heating-webinar-2 https://t.co/fbVvp3shfe

🐦🔗: https://n.respublicae.eu/eumayors/status/1663917012043677698

You missed today's webinar on solar heating and/or are ready for more?

Join us for the next webinar on decarbonising your district heating on 5 June!

Register now 👉 https://eu-mayors.ec.europa.eu/en/solar-heating-webinar-2
RT @solarthermal: 2⃣6⃣4⃣ cities in the 🇪🇺 use #SolarDistrictHeating
How cities can decarbonise their #DistrictHeating with #SolarHeat?
Join the webinar by @eumayors & @IEASHC
🗓️June 5
🕚 11:00-12:30

Register on https://eu-mayors.ec.europa.eu…

🐦🔗: https://n.respublicae.eu/eumayors/status/1658814882874114048

☀️You want to learn more about solar district heating? You're curious to know how your city can integrate it into their decarbonisation strategy?

Then join us & @IEASHC for our Webinar series on Solar Heating! 🗓️ Don't miss Session 1⃣ on May 17 ➡️ https://eu-mayors.ec.europa.eu/en/solar-heating-webinar-1
RT @solarthermal: #SolarHeat is...For smart cities!
Join the webinar on #SolarDistrictHeating by @eumayors & @IEASHC
🗓️ May 17, 11:00-12:30
Register here: https…

🐦🔗: https://n.respublicae.eu/eumayors/status/1651518162314166272

42 degrees, 72 in here. windows open. Solar heating #sun #solarheat #sunset #spring

RT @HeatChangers: @euenergyweek Listen to our #podcast and learn more about #solarheat in EU countries.

🐦🔗: https://n.respublicae.eu/euenergyweek/status/1635939070843953153

I like this work but am left with the nagging worry that an overweening emphasis on making things more efficient when we have zero efficiency due to zero deployment is a misordering of priorities?

Put another way, this work is completely necessary but folks reading it may be lead to conclude "I'll wait until the efficiency is as good as this."

It's easy to get the biggest part of the lift.

'Transparent planar solar absorber for winter thermal management'

https://www.nature.com/articles/s41598-022-19448-2

#SolarHeat

Some companies already offer promising 'low-tech' energy solutions that were not so attractive when energy was cheap and abundant:

#Heliostorage uses #BoreholeThermalEnergyStorage to make #SolarHeat available in winter. Similar to #DrakeLanding in 🇨🇦
https://heliostorage.com/how-it-works
https://www.dlsc.ca/

#SavoSolar has built many large #PitThermalEnergyStorage systems in Central Europe, but not yet Finland.
https://savosolar.com/

We should quickly ramp up such technologies.

Some companies already offer promising 'low-tech' energy solutions that were not so attractive when energy was cheap and abundant:

#Heliostorage uses #BoreholeThermalEnergyStorage to make #SolarHeat available in winter. Similar to #DrakeLanding in 🇨🇦
https://www.dlsc.ca/
https://heliostorage.com/how-it-works

#SavoSolar has built many large #PitThermalEnergyStorage systems in Central Europe, but not yet Finland.
https://savosolar.com/

We should quickly ramp up such technologies.

RT @SolarHeat_EU: 🆕 The #SolarHeat newsletter July edition is out 📰

Topics
🟠 30th anniversary events highlights
🟡 Energy Performance Buildings Directive #EPBD
🟢 Solar heat events in autumn
🔵 #SolarThermal Markets globally

➡️https://mailchi.mp/a1a8f538bca5/solar-heat-europe-solar-heat-newsletter-july2022-5865327?e=[UNIQID]

🐦🔗: https://nitter.eu/euenergyweek/status/1547943575647711241

RT @cleanenergy_EU: 🔎#H2020Energy #Projectspotlight

Read all about the #EU funded @HycoolEU project using #solarheat🌞to power industrial processes #industrialcooling #fresnel

More👇
🇪🇺 https://cordis.europa.eu/project/id/792073
💻https://hycool-project.eu/

🐦🔗: https://nitter.eu/cinea_eu/status/1531205687791046656

🔎#H2020Energy #Projectspotlight

Read all about the #EU funded @HycoolEU project using #solarheat🌞to power industrial processes #industrialcooling #fresnel

More👇
🇪🇺 https://europa.eu/!hmjQBM
💻https://hycool-project.eu/

🐦🔗: https://nitter.eu/cleanenergy_eu/status/1531183636522799104