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Major Commercial Plant Room Mistake!
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- Опубликовано: 27 дек 2020
- Some design issues we found on a recent commercial plant room that gave poor flow temperatures to the system and could be alot more efficient! low loss headers and plate heat exchanger mistakes.
Quality mate I'm all ways at school watching your video,best part is for me you get straight to the point Quality mate
I’ve just released a course detailing everything you need to know to become a heating genius! What’s more it’s been recognised by the UK government department BEIS which have offered to heavily subsidised the first 300 spaces!
courses.heatgeek.com/
I am so glad I found your channel. I am relatively new to commercial work and these videos are a well of knowledge.
I’ve just released a course detailing everything you need to know to become a heating genius! What’s more it’s been recognised by the UK government department BEIS which have offered to heavily subsidised the first 300 spaces!
courses.heatgeek.com/
I'm not a heating engineer or anything like it, but i love geeking out to these videos.
Designed by consultants who are basically salesmen, over spec everything and in recent times are now just producing performance specs, design is passed to sub contractor, been in commercial work last 30 years, lack of skills/knowledge shocking-good vid
Thanks Danny. The problem is the way they charge.. they usually charge a % of install...
Itsbthr environment as well as the customer that suffers
Also schematics are often just copy and pasted from the last job... with no real understanding
I’ve just released a course detailing everything you need to know to become a heating genius! What’s more it’s been recognised by the UK government department BEIS which have offered to heavily subsidised the first 300 spaces!
courses.heatgeek.com/
I used to look after a site that was accommodation for kids in an activity centre. There was three blocks, each having 26 rooms with one shower in each room. The plant room for each block had 10x 80kw LPG ideal imax boilers connected to a plate hex. Just to do the hot water. Heating was electric.
Sometimes the over-spec is insane.
BSS did the spec 😂
@@Jody669 🤣🤣🤣😍 thats mental mate
Wow, I knew most of this but never realised it would all have such an effect!
Take a look at courses.heatgeek.com!!!
Great video! So interesting I'm loving it. The last rad on that system would more than likely giving out hardly anything of I'm not mistaken.
they are increased in size as you go along to account for temperature drop.
One thing I will add is the whilst separating the new boilers from dirty water with a PHE is a good idea to protect the boilers, it is not a permanent solution as the plate will become blocked. They have narrow channels that are optimised for heat transfer so need a high level of turbulence. The result is that the pumps have to work harder to get the same flow through the plate as the resistance is then higher with all the dirt in it, and layers of debris start to form on the plate surface which is a resistance to the heat transfer. If they stick a PHE in and want it to perform well then the system needs to be flushed and a water treatment regime is employed to reduce further corrosion. Even better, follow the German standard and remove oxygen from the system and fill it with demineralised water.
Yes totally, its hard to know when to stop when doing these videos!
@UC_Cf7jGT8CYklPq9JGHqIjw Can see that. You could be there all day pointing out errors, but I think you’ve got the main ones. Plate in co-current with a low loss header seriously frustrates me.
You'll only get supply temperature degradation on those hydronic separators when the primary flow rate is less than the secondary flow rate. That's a condition that can be easily mitigated on modern commercial systems, with a downstream temperature sensor and efficient sequencing/modulation of the boilers.
The heat exchanger normaly has a label on it telling you which way to pipe it up also half of the set pins are missing on the flanges if its got eight you put eight in
See this often. Plate and LLH set up. why why why delila. Need more commercial videos.
Great content , thank you. Embarrassed on behalf of building services engineers everywhere 😳
🤣🤣🤣🤣🤣🤣👍👍👍👌
I’ve just released a course detailing everything you need to know to become a heating genius! What’s more it’s been recognised by the UK government department BEIS which have offered to heavily subsidised the first 300 spaces!
courses.heatgeek.com/
These are excellent.
Thanks
I hope the architect / consultant is footing the bill to correct all that.
Probably going to be done on indemnity.. I would like the work and to be paid from thr indemnity personally...
@@HeatGeek Was there any filter on the return to protect the plate ?
@@uknokianut yes an unserviced strainer
Great video, you always manage to post just the think that’s on my mind. I think the direction of flow error on a plate is fairly common, at least I’ve seen it a few times on social media
Keep up the great work 👍
Yeh I've seen it a fair bit too. Thanks Terry 😊 🙏
Could the PHEX not just be oversized and still have the header too?
Its quite scary that the original designers of the system have got the configuration that wrong,
Ehats more scary is coming this stuff is.. no one seems to know what they're doing
Sorry meant to say. Whats more scary is how common this stuff is.
Love your videos 👍🏼
You’d think that systems like this are designed in an office by people with a degree in engineering, how does it end up so wrong?
Because they are designed by those with little hands on experience imo
@@HeatGeek It’s humbling to think that people like myself working in 3 bed semis know better.
These issues in small houses are bad enough but imagine the energy wastage when scaled up to this size!
@@andrewalderson1 because there profit is a percentage of the contract valve
I’ve just released a course detailing everything you need to know to become a heating genius! What’s more it’s been recognised by the UK government department BEIS which have offered to heavily subsidised the first 300 spaces!
courses.heatgeek.com/
How did you get into commercial? advice for a domestic gas engineer.
Both mine and biz partners apprenticeship was commercial.. honest business advice? Don't turn down challenges and care about the outcome.. dont leave customers stranded and work at a loss if needed.. thats where we learn the most!!
@@HeatGeek Best advice ever!
So many people pipe the plates up wrong
🤘😎🤘
So what's the best solution in this case?
Loose the llh and repipe the plate. Weve suggested to just loose the plate and install a filter for cost reasons
@@HeatGeek you couldnt do that with a vaillant 😂🤣😂
That's just dumb, who the hell designed that
@@HeatGeek pooh how exciting that was what I was going to suggest after you diagnosed the fault :-)
How much heat “degradation” do you normally get from a LLH?
Depends on the flow rates. Watch our why not to use llhs to see exactly
@@HeatGeek just on average for a smallish system like that.
@@greenyamo1321 between 1c and 40c
@@HeatGeek so an average of 20°C across the board roughly on all LLH? I’m lucky to find any more than a couple of degrees personally.
@@greenyamo1321 the mean would be more relevant than the average.. mean would be something like 5 but it could.be anywhere
:))))