Track pipe sizing meter locations

[Matt0167]

People stealing them they've boxed all the local ones round me

Xmas around the corner them pikeys will be in for a treat with this one haha

 

[ShaunCorbs]

Xmas around the corner them pikeys will be in for a treat with this one haha

Keeps me in work but don't get any scrap

 

[Matt0167]

Can one of you maths wizards check this for me please , Not my strongest point hence why I couldn't sit in a office all day

Iv volume of the supply I've got to install

41meters in total from meter to boiler consisting of track pipe and 28mm tube

28mm tube 16 meters, volume 0.00864 plus 10% fittings comes to 0.0095

28mm track pipe 25 meters , 0.016 (1m of T.p volume is 0.00064) listed on there site

Meter volume 0.008.

0.0095+0.016+0.008= 0.033 just under the maximum of 0.035

Sound about right ?


Next stage

3.24 M3/HR for boiler no other appliances as yet but never know if they want to throw a hob in at some point


16 meters of 28mm pipe plus fittings 13 elbows @0.8 additional length = 26.4 rounded up to 30 meters as i dont know whats going on in the meter cupboard may use a few more elbows, this gives me a discharge rate of 4.7m3hr

The track pipe section is 25meters long in 28mm with 4 sweping bends if I've read it correct it's 0.3 per bend and the chart allows for 4 bends and 2 end connections giving me a discharge rate of, 3.81 M3/HR

How do I add them sections together to get a total flow rate I've never worked it out using different materials always been in copper , I don't think it works by looking at how close the flow rate is just with the trackpipe, however the 28mm does discharge a higher m3hr per meter than trackpipe so may have to reduce the trackpipe length and increase in copper if that makes sense,

Can't increase pipe size either as I will be over the I/V of 0.035

Thanks in advance

Matt

 

[ShaunCorbs]

Will work it out but you don't add them together in terms of m3/h

In short this needs to be the same or higher than the amount you require so for both legs your above your requirement

it's pressure loss you add together

 

[Matt0167]

Will work it out but you don't add them together in terms of m3/h

In short this needs to be the same or higher than the amount you require so for both legs your above your requirement

it's pressure loss you add together[/QUOTE

Hi Shaun

Sorry my bad terminology , because of the different discharge rates between t.p and copper, I understand there not added together as that would give me a massive discharge rate it's the 2 items that have thrown me off , Can't find anything in my viper book explaining it in better detail if your not doing these sort if calculations daily , easily forgotten best get revising again lol

 

[ShaunCorbs]

IVT

25 meters of 28mm tracpipe
0.00064 per m of trac pipe
0.00064 x 25 = 0.016 iv

16 meters of 28mm copper
0.00054 x 16 = 0.00864 + 10% 0.009504 iv
meter U6 0.008 iv

0.016 + 0.009504 + 0.008 = 0.0335.04 ivt

Loading

34kw requiring 3.19m3/h

25 meters of 28mm tracpipe with 4 sweeping bends

0.3 x 4 = 1.2m

total length 26.2m suitable for 3.7m3/h

16 meters of 28mm pipe plus 13 elbows

0.80 x 13 = 10.4m

16 + 10.4 = 26.4m

total length 27m suitable for 5.06m3/h

 

[Matt0167]

IVT

25 meters of 28mm tracpipe
0.00064 per m of trac pipe
0.00064 x 25 = 0.016 iv

16 meters of 28mm copper
0.00054 x 16 = 0.00864 + 10% 0.009504 iv
meter U6 0.008 iv

0.016 + 0.009504 + 0.008 = 0.0335.04 ivt

Loading

34kw requiring 3.19m3/h

25 meters of 28mm tracpipe with 4 sweeping bends

0.3 x 4 = 1.2m

total length 26.2m suitable for 3.7m3/h

16 meters of 28mm pipe plus 13 elbows

0.80 x 13 = 10.4m

16 + 10.4 = 26.4m

total length 27m suitable for 5.06m3/h

Top man cheers shaun

 

[ShaunCorbs]

pressure drop with a loading of 3.20m3/h

28mm trac pipe

25m = 0.451 mbar

28mm copper

16m = 0.432 mbar

total pressure loss 0.883

estimated not very good at pressure losses

 

[Matt0167]

pressure drop with a loading of 3.20m3/h

28mm trac pipe

25m = 0.451 mbar

28mm copper

16m = 0.432 mbar

total pressure loss 0.883

estimated not very good at pressure losses

Better than me mate

 

[ShaunCorbs]

if you upped the trac to 32mm you ivt would be

0.0275 + 0.00950 + 0.008 = 0.045 ivt

just for reference