Having seen this webpage https://www.draytoncontrols.co.uk/news/opentherm-explained , which kind of modulation do you have? Long boiler runs are not always bad.
Also, are you able to use the living room TRVs to restrict the livingroom radiators heat output while keeping what you have set as the main setpoint, in the use case you detailed. That would avoid having the main thermostat triggered off too soon.
I’m really confused by your post. The questions don’t seem to match eachother’s. I feel you have not made clear the specific use case you’re troubleshooting.
I am an inexperienced knob on Homeassistant and home automation, that lurks here out of curiosity and to catch some easy crumbs left around.
But, I feel that I know enough about central heating, radiators and thermostats to justify commenting.
The central heating boilers, pretty much always, just work as on-off. With some internal (boiler) logic on safety limits, like the working temp of the radiator fluid.
Thus your obvious question has an obvious answer. The way to have the main thermostat sending a heating request is to lower it’s setpoint temp.
At the same time, the TRVs are supposed to limit/moderate the lowness of the main thermostat setpoint, i.e., to moderate the way in which the main thermostat activates the boiler ‘too soon’. And TRVs allow you to adjust the comfort of each room (as long as the main thermostat is already requiring the boiler to be on).
As for the presence sensors. Radiators take a long time to heat a room. Like dozens of minutes. If the presence sensors work as their name suggests, I feel they are not a good match with radiators. Plz teach me!! How do these work? What happens when you are sleeping, or when siting, reading, or watching TV, or in the computer.
“I’ve heard about central heating systems not enjoying a fully thermostatic valved circuit.”
‘Enjoy’? Ehh, the pump (usually a part of the boiler) and the tubing that make the radiator’s fluid circulate, from the boiler around the house and around the radiators, they are not contructed/designed to have the circuit closed. 100% closed. Thus the recomendation not to put TRVs in all radiators - which could potentially all close off at the same time and damage the circuit (with overpressure). The recommendation is to have at least one radiator with it’s manual valve always open. The recommendation is also improved to have this radiator in the bottom of the house or the closest to the boiler, instead of a radiator in the top floor bathroom where you’ve left open the window to let out the moisture or something.
Again, what is it really what you want to solve?
Money, I’m going to bet it’s money.
The linked article has a dedicated section «1.3.6 Key truth #6: ‘There’s hope’».
I believe you are wrong because you are inconsiderate to the OP and to the other readers, by commenting before reading the linked article.
I believe you are wrong because you moan before doing your (very small and straight foward) part.
You haven’t addressed a key point on this discussion. Which tells me that either you don’t know what you’re writing about – likely! – or you’re pulling a red herring.
The sad state of things is that 90% of the population won’t care if their favorite MrBeast video has DRM.
Agreed!!
(unfortunately PeerTube is so far off being a reasonable alternative)
Why? Because of the hosting cost? Where is Youtube getting this for cheap?
Mastodon
Mastodon
After sparing this paper a fair bit of attention I feel I’ve wasted it.
Nowhere in the paper could i find in what conditions the test samples were kept during the experiment. This is pretty basic stuff. At this stage I’d wage sloshing was the issue.
Reading this part of the methodology:
"2.2 Initial sperm analysis
After liquefaction…
[Two paragraphs later, in the same section: ] After this first analysis, the 15 sperm samples were split into two fractions. All the samples were exposed to ‘Parabolic flight’ (split 1) and to…"
Did they liquefied the samples and tested like that? Whaa?
The “After this first analysis” should not be in the “2.2 Initial sperm analysis”. It just shouldn’t!
Then I think “15 sperm samples were split into two fractions”. … “the samples were exposed to ‘Parabolic flight’ (split 1)” — splits, fractions, what a mess!! At this stage I’ve wasted enough.
The paper should be retracted, the reviewers spanked and the editor fired.
Abstract
Most of the widely used vaginal lubricants in the U.S. and Europe are strongly hyperosmolal, formulated with high concentrations of glycerol, propylene glycol, polyquaternary compounds or other ingredients that make these lubricants 4 to 30 times the osmolality of healthy vaginal fluid. Hyperosmolal formulations have been shown to cause marked toxicity to human colorectal epithelia in vivo, and significantly increase vaginal transmission of genital herpes infections in the mouse/HSV model. They also cause toxicity to explants of vaginal epithelia, to cultured vaginal epithelial cells, and increase susceptibility to HIV in target cells in cell cultures. Here, we report that the osmolality of healthy vaginal fluid is 370 ± 40 mOsm/Kg in women with Nugent scores 0–3, and that a well-characterized three-dimensional human vaginal epithelium tissue model demonstrated that vaginal lubricants with osmolality greater than 4 times that of vaginal fluid (>1500 mOsm/Kg) markedly reduce epithelial barrier properties and showed damage in tissue structure. Four out of four such lubricants caused disruption in the parabasal and basal layers of cells as observed by histological analysis and reduced barrier integrity as measured by trans-epithelial electrical resistance (TEER). No epithelial damage to these layers was observed for hypo- and iso-osmolal lubricants with osmolality of <400 mOsm/Kg. The results confirm extensive reports of safety concerns of hyperosmolal lubricants and suggest the usefulness of reconstructed in vitro vaginal tissue models for assessing safety of lubricants in the absence of direct clinical tests in humans.
Have you forgotten. ‘/s’ ?
Yes!
My Xiaomi Redmi 11 keeps telling me the Calculator can’t use the network (why?) and keeps asking me to accept the privacy policy.
Also the app wallpaper - the one that changes the locked screen background image (important complex stuff /s) - also keeps asking me to accept the privacy policy.
And, as far as my reading of the policy goes, these privacy policies are just the one, it’s not a different one for each app.
Can Nuclear plant electricity production be run in a decentralised way? No?! Not yet!?
Do we have alternatives to nuclear? Yes!?
We should avoid nuclear then.
They are just serving those who can claim back the ticket money. Mostly, you know, those that use your money to pay those tickets.
What do you even mean with your word salad?
Your first sentence/paragraph is absurd in the post’s context. Crop rotation will not replenish the soils’ potassium.
And in your 2nd paragraph… what do you mean by “similar purpose”? It’s ambiguous, how you have used it. Also, do you know anything of how fertilizers work?
Quick quiz: Wheat has b12 vitamin and iodine, can you just eat more bread to replenish your body’s neads for those nutrients? Or does a balanced diet need to be …balanced for all nutrients?
EDIT: I think Musk went of the rails after he got COVID, I speculate. It’s my own take on creating a conspiracy theory.
I don’t think it would fit. Besides, it is said they should not hide their faces!
If one doesn’t know how to count, shouldn’t be allowed a firearm.
What you said on the 1st sentence is okay. After that, is clueless. …in the context of discussing the difficulties - technical and economical - of growing specific algae for food.
After sterilising everything and sigeling out the alge you want you should in theory be able to run more or less indefinitely.
This is like saying that if there’s sun and no clouds, in theory, the sky should be blue. In practice there’s no useful information added to the discussion on the…
And if a contamination of found it just a matter of sterilizing everything with steam and reboot the system.
Like in all that is microbiology, kind of. Except steam is not sterilising. Unless under autoclave pressures. Inside an autoclave. Even in those conditions, which are agreed to be sterilising, even then not all microbes are killed and contamination is still considered as an issue in some cases. Again, in practice there’s no useful information added to the discussion on the…
Your non-expert overconfidence is not unique. It’s an epidemic. And that’s why I’m triggered to comment on it.
From the site: with opentherm modulation “the boiler will run for longer periods but it will be producing water at lower temperatures, resulting in less energy being used and maximising the time spent in the higher efficiency condensing mode.” So, longer running times should not be a problem in your setup.