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vk6flab , to nostupidquestions in can you ELI5 the physics of bleeding radiators on an apartment building?
@vk6flab@lemmy.radio avatar

I’d expect that the person to ask would be the building manager.

kratoz29 , to gaming in Weekly “What are you playing” Thread || Week of September 15th
@kratoz29@lemm.ee avatar

Ace Attorney Investigations Collection in my Nintendo Switch.

I was hesitant about playing it as a collection/remake as I already have the game loaded in my DS with the fan translation (at least I skipped the complaints about the change of the character names 😆), and I have played all the prior Ace Attorney games in DS/3DS and I am much more a handheld user than a console user, but I have been liking the improvements that the remake has, and playing it in the big TV has been pretty comfortable for me with this title, perhaps the bigger screen for text is the best reason.

Jourei , to asklemmy in How much money would it take for you to never listen to your favourite artist again?

How much ya got?

Music isn’t that important to me so I’d probably be fine in the thousands but I’d make it sound like I would need millions.

istanbullu , to asklemmy in What is your favourite open source software that you discovered in the past year, that you can no longer live without?

orange pi running samba as a file server. it’s behind a wireguard vpn.

huge improvement in my quality of life.

AI_toothbrush , to lemmyshitpost in Stand your ground

How can you make those mistakes???

Noodle07 ,

School bad, gun good

bstix , to nostupidquestions in can you ELI5 the physics of bleeding radiators on an apartment building?

That depends entirely on how the system is set up. I would only ever consider increasing the amount of water in the system if I was absolutely certain that my apartment was on a completely separate and closed circuit than the other apartments. You should contact the janitor or whatever it’s called.

Successful_Try543 , (edited )

Usually, at the heating boiler, there is a junction for a hose with a valve and close by a pressure meter. If the pressure is too low, the janitor (not you) should fill up the heating system with water until the pressure is sufficient. Ideally, the pressure should be checked again after bleeding the radiators.

bstix ,

Yup, that’s how it’s done when there’s a heat exchanger.

However there’s a reason why the boiler room is usually locked off in a 30 story building. Bleeding a radiator might be relatively harmless, but there’s no way of knowing what the pressure is supposed to be without knowing the entire system.

Some (lower) buildings might even have direct district heating without an exchanger, which is absolutely no go to even bleed.

Treczoks , to showerthoughts in When was the last time I changed the oil in my mower?

I never changed the oil in my mower. Never had an issue, except with the power cord getting in the way.

WereCat , to lemmyshitpost in Choosing violence

Task Manager stopped responding

atro_city , to lemmyshitpost in Stand your ground

Lotters? Is this some vernacular I'm unfamiliar with?

abfarid ,
@abfarid@startrek.website avatar

They attempted to write “Loiters* will be shot* on sight”.

Typotyper ,

Or “Looters” Or “Lawyers” Or “Losers” Or maybe it really is “L’Otters”. Those radical left rascals causing mayhem and dissection in the workers.

stebo02 ,
@stebo02@lemmy.dbzer0.com avatar

What’s a loiter?

abfarid ,
@abfarid@startrek.website avatar

That’s what they tried to write, but to be lexically correct it should be “loiterers”.

jaybone ,

Wouldn’t it be loiterers?

abfarid ,
@abfarid@startrek.website avatar

Yes, but we don’t know if that’s what they wanted to write. But in that case, maybe they also wanted to write “shoot” and not “shot”, so yeah, fair point.

nexguy ,
@nexguy@lemmy.world avatar

And wouldn’t it be shooted?

MadBob ,

It says, in fact, LOπERS.

atro_city ,

LOPIERS

MadBob ,

WILL BE SH∞T ON SIGHT

Tudsamfa , to asklemmy in What's your stance on "donating" blood plasma?

Well, that’s a new thought. Donating blood is necessary, so we get paid by the Red Cross to do it, in money or a small meal. But the Red Cross then immediately upsells that blood to the hospitals that need it. In a sense, we are exploited workers without a contract.

The real reason donating blood is unethical is because we cannot unionize.

sjmulder , (edited )

I wouldn’t mind it for that reason. The Red Cross do good work that need to be financed.

Here in the Netherlands they do that by contracting out volunteers for first aid services to events like fairs and runs. The volunteer donates their time, gets trained for free, the Red Cross gets paid by the organiser and makes money for their mission and an small army of experienced first aid people and EMTs to help out when disaster strikes.

I’m such a volunteer and it’s a great distraction from my normal job. I also get to use my skills outside of the Red Cross, e.g. as an action medic at protests.

Cool sidenote: there’s this network any CPR certified person can join to get alerted by emergency dispatch when CPR is needed close to your home or work. This has helped massively to get CPR started within 6 minutes mostly anywhere in the country, even when ambulances can’t get there that quickly.

nous , to nostupidquestions in can you ELI5 the physics of bleeding radiators on an apartment building?

A water central heating system is a closed loop system that is under pressure. This means the water in it is circulated around and around the system and is cut off from other water supplies under normal operation. Naturally, slow leaks happen and gas can enter the system in various ways so occasionally this needs to be released from the system. Any gas in the system naturally collects at the highest points along the path - which tend to be the radiators.

When you bleed a radiator you are opening the system to the outside and hopefully where the gas has accumulated. Since the system is under pressure it forces the gas out of the system to equalize the pressure with the outside. This will cause the pressure of the system to drop and eventually it will stop.

However there should be a control valve somewhere, typically on/near the boiler that connects the central heating system up to the mains water supply. You can open this valve to cause water to flow into the central heating system and pressurize it and really this should be done every time you bleed the radiator a significant amount.

In apartments though you might find that you are on a building wide circuit, or you might have one isolated for your apartment. If you have a boiler in your apartment then you are likely on a closed system and should be able to equalize the pressure yourself. If it is building wide you need to talk with your building manager.

Note that you should not need to bleed your radiators that often. Once every several years should be more than enough. If you are doing it frequently then you likely have a large leak in your system and likely want to get someone to check that out.

ODuffer ,
@ODuffer@lemmy.world avatar

Great answer, there should also be a pressure gauge somewhere on the boiler. As mentioned, this is really for your building manager though.

atro_city , to memes in Burnt to a crisp

Don't forget the abuse and rape of civilians by the Israeli army.

friendly_ghost , to science_memes in MY BODY IS READY

Great but what about your abstract

jjagaimo , to lemmyshitpost in Always be prepared

Just don’t mind the dripping

Track_Shovel OP ,
@Track_Shovel@slrpnk.net avatar

I snore with my mouth open

abfarid , to lemmyshitpost in Stand your ground
@abfarid@startrek.website avatar

“Survivors will be shoot again”.

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