pandora-health

6 ms·

1.
by pandora-health 3mo ago
I stopped arguing with people, so I started arguing with the whole internet instead :)
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by pandora-health 5mo ago
I run daily comparisons between a gas boiler and a heat pump in the UK. Given that gas is cheaper than electricity, a well-installed and well-controlled gas boiler can still be cheaper to run. Heat pump running costs can drop drastically wh
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Listen to YouTube in the background on iOS (Free)
2 points by pandora-health 11mo ago|1 comments
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by pandora-health 11mo ago
Checkout NodoShop, the WiFi board version.
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by pandora-health 11mo ago
If your boiler supports OpenTherm then get this thermostat controller https://github.com/Alexwijn/SAT Weather comp + low load comp + PID which means your room temperature works at the precision range supported by your
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Personal micro-app (recipes > GPT shopping list > To-do app) the future of apps?
1 points by pandora-health 1y ago|0 comments
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by pandora-health 1y ago
Check out SAT Smart Autotune Thermostat https://github.com/Alexwijn/SAT Its heating curve is corrected by a PID. Room temperature precision is within 0.1 Celsius. Less gas consumption, lower bills and higher comfort :)
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by pandora-health 2y ago
The only open source implementation of OpenTherm (and EMS bus too now) that actually works (unlike commercial thermostats) and provides low load and weather compensation at the same time is: https://github.com/Alexwijn/
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by pandora-health 2y ago
https://github.com/Alexwijn/SAT for your boiler (and thermostats)
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by pandora-health 2y ago
Wait until you discover https://github.com/Alexwijn/SAT your smart autotune thermostat!
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by pandora-health 2y ago
If your HVAC supports OpenTherm, check out https://github.com/Alexwijn/SAT You can have your thermostat in home assistant and make your HVAC run as efficiently as possible at the same time. See https://news.
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by pandora-health 2y ago
Thanks! SAT (Smart Autotune Thermostat) is a free integration you can add to Home Assistant, which can work with your existing thermostat but the intention is that it replaces it altogether (SAT becomes your virtual thermostat). There are m
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by pandora-health 2y ago
Here are two other boilers I found for comparison: https://emoncms.org/app/view?name=GlowWormBoiler&readkey=88a... https://emoncms.org/app/view?name=TomsBoiler&readkey=484aa31...
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by pandora-health 2y ago
Thanks for your question! It’s definitely been more about passion than payback. The energy savings are there for sure, but for me, the real value has been in the learning and doing as well as the result, house climate control with constant
15.
by pandora-health 2y ago
To calculate the cost using a UK gas price we would want to have assumed an efficiency in HHV. This is because UK gas prices are given on an HHV basis. Either convention can be used as long as all of our fuel consumptions, efficiencies and
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by pandora-health 2y ago
I agree, 25 SSI adjusted and above begins to feel too warm but that's why I set it at slightly cool instead.
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by pandora-health 2y ago
Yes, that's what I noticed in the previous house, where the water tank was connected to a solar thermal panel. Solar thermal panel heats the oil inside it and the heat is exchanged between the water tank and the panel during the day wh
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by pandora-health 2y ago
Yes, it's between 40-60% on average. Here's a snapshot https://snapshots.raintank.io/dashboard/snapshot/OvZOk9eb6gL...
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by pandora-health 2y ago
Yes, there are hybrid heat pumps that can work with gas boilers. Such system can help to reduce gas usage by up to 70%. I am considering it :)
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by pandora-health 2y ago
I use something called Summer Simmer Index, which means that my target temperature takes into account indoor humidity. I feed Home Assistant RAW indoor temperature, and SAT (the integration), converts it to SSI. https://blog.gcwi
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by pandora-health 2y ago
I see where you coming from and even if the simple calculation is not what it is in real life, it's definitely running more efficiently than it would otherwise. Also, there are other benefits. Mainly, climate control, which means that
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by pandora-health 2y ago
I agree, most boilers, left without proper tuning are running below 90% efficiency, most likely about 80%. A 10% increase at the country level would be significant.
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by pandora-health 2y ago
No, I haven't seen that data for my boiler but it would be useful. Even though cycles might be shorter, note that the temperature that the whole system is exposed to is much lower on average. A typical boiler will run at 70 degrees, co
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by pandora-health 2y ago
There are three showers and two baths in the house. All upstairs, which allows for the pipes to recover some of the heat on the way down. This excludes sinks where you most likely to use cooler, if not cold water. I take the maximum efficie
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by pandora-health 2y ago
Regarding gas condensing boilers and their efficiency, the notion of them achieving over 100% efficiency, as measured by the Lower Heating Value (LHV) of the fuel, really showcases the value of recapturing latent heat. When we burn natural
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Efficient gas boiler with real-time data(emoncms.org)
47 points by pandora-health 2y ago|43 comments
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by pandora-health 2y ago
I’d like to show you the real-time performance of my gas condensing boiler, arguably the most efficient online boiler in the UK (out of all online boilers :) ). Enjoy! And ask any questions if you have any. Thanks.