Diesel generator fuel supply and return pipes sizing
Diesel generator fuel supply and return pipes sizing
(OP)
Hi mates,
Appreciate if anyone can teach me how to size the supply and return line of an diesel generator from its diesel tank.
Thanks.
Appreciate if anyone can teach me how to size the supply and return line of an diesel generator from its diesel tank.
Thanks.





RE: Diesel generator fuel supply and return pipes sizing
RE: Diesel generator fuel supply and return pipes sizing
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RE: Diesel generator fuel supply and return pipes sizing
RE: Diesel generator fuel supply and return pipes sizing
If so, use charts for line flow for diesel fuel (Gasoline, Water) GPM or GPH and size the lines for a low pressure drop for the distance it has to flow.
Bud Trinkel, Fluid Power Consultant
HYDRA-PNEU CONSULTING
RE: Diesel generator fuel supply and return pipes sizing
So, correct me if i understand you wrongly ;we should size the supply line based on the fuel consumption per hour. Then what about for return line?
I attach the fuel schematic that we looking into.The fuel tank is about 50metre away , with plinth (height to be determined). trying to understand the basic theory and correct way of sizing.
Thanks for the guidance.
RE: Diesel generator fuel supply and return pipes sizing
I just did a Google search for "Diesel fuel flow pressure drop and found this site:
http://w
There were a bunch of others also.
I like www.google.com, it saves me a lot of time waiting for answers.
Bud Trinkel, Fluid Power Consultant
HYDRA-PNEU CONSULTING
RE: Diesel generator fuel supply and return pipes sizing
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RE: Diesel generator fuel supply and return pipes sizing
Bud Trinkel, Fluid Power Consultant
HYDRA-PNEU CONSULTING
RE: Diesel generator fuel supply and return pipes sizing
RE: Diesel generator fuel supply and return pipes sizing
There are many variables that we are not advised of at the moment, height of the storage tank in relation to the engines, length of the main line from the tank to the the split to individual lines, flow rate required (fuel consumption at full load of each engine), what pressure is required at the engine injection pump/s.
You can get the fuel consumptionn from the engine performance curve or from the manufacturer. If we have this information we can then give you some advice that will assist you.
RE: Diesel generator fuel supply and return pipes sizing
A diesel engine will use somewhere between 0.4 and 0.5 lb/hp/hr of fuel- when operating at full load at a set speed.
You can therefore approximate the fuel required for your gensets accuratley enough to size the pipe requirments.
As an example: an engine running at 100hp output the consumption becomes;
100 x .5 = 50 lbs
assume 7.5 lbs per US gallon = 6.7 gallons/hr
Trust this helps - but we still need more detail to size the pipework.
RE: Diesel generator fuel supply and return pipes sizing
As I understand your sketch,
- There is only a "gravity feed" from the bulk diesel tank to the genset
- You do not show any pumps or "daytank" commonly found on gensets (a daytank is commonly required for fire protection requirements)
- What provides the pressure for the fuel return line back to the bulk tank ? Perhaps a pump that you do not show ?
-MJC