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injector
An injector is a system of ducting and nozzles used to direct the flow of a high-pressure fluid in such a way that a lower pressure fluid is entrained in the jet and carried through a duct to a region of higher pressure. It is a fluid-dynamic pump with no moving parts, excepting a valve to control inlet flow.
A steam injector is a typical application of the principle used to deliver cold water to a boiler against its own pressure, using its own live or exhaust steam, replacing any mechanical pump. When first developed, its operation was intriguing because it seemed paradoxical, almost like perpetual motion, but it was later explained using thermodynamics. Other types of injector may use other pressurised motive fluids such as air.
Depending on the application, an injector can also take the form of an eductor-jet pump, a water eductor or an aspirator. An ejector operates on similar principles to create a vacuum feed connection for braking systems etc.
Maybe I'm being a bit lazy but can anyone help me with the output of jets/nozzles by size on LPG at around 30mb?
Its not thrilling but I'm looking at some redneck style testing on campervan ventilation requirements (BS EN 721 clause 6, if anyone's as bored as me).
You can see the flow from the stove top middle and the return to the stove continues about a foot just behind the fridge and then turns back into the wall and stove just behind. Thanks
spudseven
Thread
correct
cylinder
injector
placement
return
stove
tee
water
Hi there, I'm currently plumbing a renovation for a client, who wishes to install a Stanley superstar oil cooker, which he is getting refurbished. Anyone any ideas on how to link to heating? I have saw installations before, where the cooker was piped into a neutraliser, or locally known as a...
Hi all, any advice on the pros and cons installing a multi fuel boiler stove using two taps (feed and common return) using the following three options. Hopefully the diagrams are ok, if not what additional info do I need to provide?
Option 1. No injector tee fitted, cylinder return and return...
patkelly67
Thread
boiler
cylinder
fitted
injector
multi
oil
pipe
return
stove
Dear all, open to any suggestions to overcome this problem.
Scenario is hot water cylinder (gravity fed) only warms up when heating pump goes off.
Boiler has 4 pipes (2 at top 22mm flow CH and 28mm flow DHW) and 2 returns at bottom. Had a problem with circulation this winter so changed pump to...
burt32
Thread
boiler
cylinder
hot
hot water
hot water cylinder
injector
problem
pump
return
water
Just a question I'd like to ask regarding a post I read earlier. If you have a solid fuel boiler with pump heating and gravity hot water. Would there be three pipes leaving the boiler two being the flows and one being the return? And when the return from the heating and hot water are commoned...
Good afternoon
Could someone explain to what an injector/venturi tee is on a central heating system is and where and why you would use one?
Many thanks
Marty32
Thread
arial
boiler
central heating system
injector
return
just looking to know if i am installing injector tee correctly i have 2 28mm pipes from solid fuel stove flo and ret on gravity circuit am i right in saying that my injector tee is piped in ret of coil first with then the other part of the injector tee which has the little piece of 15mm copper...
Hi, I am doing my ACS and just want to understand something more clearly.
- I have a Baxi solo 2 40 PF.
- M.I's state max heat input 14.65 kw and min heat input 11.36 kw.
- Max burner pressure 16mbar and min 10mbar
My question is if the recorded burner pressure was at the lowest eg. 10 mbar...
fusion
Thread
burner
burner pressure
heat
heat input
injector
input
pressure
where
Plumbed this up last week an having a problem with it, the gravity flow from the stove works fine, its just when the pump for the stove kicks in the return from the rads seems to go up through the coil instead of back to the stove, put a gate valve on the return link which helped but still not...
Japnut04
Thread
back boiler
boiler
circuit
injector
oil
plumbing
return
stove
works
Went to look at a stove today, it has only two connections 1" bsp.
I know that with a two pipe stove it has to have a injector tee fitted to heat the radiators and the hot water.
Just looking for some information, knowledge on were to install the injector tee at the stove.
From looking at...
mark_mc
Thread
28mm
boiler
branch
central heating system
connections
fitting
flow
gravity
hot
hot water
injector
install
oil
pipe
radiators
stove
tee
water
why is it important to fit an injector on a solid fuel link up? Im told that many of these tee,s have been produced out on-site by soldering 2 tee's together Im not that up to date with the whole workings of a solid fuel heating system , linked with an oil boiler I understand the non-return...
Hugh
Thread
boiler
branch
buy
central heating system
circulation
cylinder
fitting
flow
gravity
hot
hot water
injector
inside
oil
pressure
pump
rayburn
stock
system
tee
water
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