cALCULATE DIESEL IN LTRS BY FIXING AN KWH METER ON LOAD.

Hello kannanksundaram

Best for you would be a fuel flow totalling type meter on the fuel line to each engine.

See picture at left.

Refer: http://www.dealtime.com/-diesel+fuel+meter

Such a meter will give you correct fuel consumption, and the readings may be taken as often as you wish.

Kind Regards....

The average generation of power ranges from 3 to 3.5 kwh per litre of diesel depending on the load on the generator and how well the generator is maintained. By measuring kwh consumed by cold room, you can calculate the diesel consumed for cold room purpose.

Most accurate method would be to meter oil consumption and both electric loads and the apportion the oil in the ratio of the electric consumptions.

Normally units generation 3 to 3.5 per ltr of HSD at 1000 KVA load,

as u are operating at 800 kva(350+450), it will be aproximate 3 units/lts.

if HSD cost is Rs 30/ltr(for example) then per unit cost become Rs 10.0

calculate total unis on basis of cold room actual units, suppose total units of cold room will be 3500 per day then as per load condition units of other section will be 4500, so total units become 8000 units @ 3unit/ltr ie 8000/3 ltr diesel u required for one day....

The efficiency of a DG set varies with the % of load.

Usually , for best results the DG should be loaded to appx 90 % of its rated load.

In order to get the best results from the DG sets it needs to be maintained well & loaded wisely .

Considering following assumptions :

1] LCV of fuel - 10000 lcal/kg & efficiency of DG set 35 %

Units that can be generated - (10000*0.35)/860---4.06 Kwh

Accordingly, putting the values for your DG set efficiency & LCV of the HSD you can find out the power that can be generated, theoritically.

BKK

yup...

This needs to be done if not yet in place.

I agree in a general sense. However the flows can also be calculated from specific fuel consumption figures for the diesel and efficiency for the generator. (Often this is already done by the generator vendor.) I'm guessing that this may be sufficient for the poster's purposes, and would not require any additional equipment and installation thereof.

My guess is that the poster just needs to apportion fuel usage for accounting purposes, and that he already knows the total fuel usage, on average, for the generator. In that case, he could split the fuel use according to the energy split.

Otherwise he would need different figures for different loading conditions : one unit, the other unit, both units, etc. My guess is that's more detail than he needs, but who knows?

hi..

first u should calculate how much diesel will utilise to produce one KWH. Then you put a KWH meter for your cold room and processing sections. We can produce 3.5 KWH from one litre of diesel. . i think it will be usefull to u.

Socomec Countis CI counters can accept 7 pulse inputs. 2 of these would connect to the supply and return fuel lines for your generator via paddle wheel pulse flow meters.

Then install 2 x Socomec Diris A40 meters - 1 for the cold room and the other for the processing plant.

The meters connect back to a PC running XP via RS485 (fairly typical Modbus protocol)

Smart EE software then monitors the 3 meters and will give you minute by minute [or second by second] recording monitoring and exports the data to Excel where you may further refine it.

Here is an example of 2 power meters logged per minute on one of our installations.

No worries Mr.Kannan. In the present technological context, the average units generated per liter of diesel is around 3.5 on a moderately maintained generating sets. Catterpillar claims around 4 units per liter under any load conditions. Yes you are right. Install energy meters for two loads separately. There should be one KWh meter installed for DG set as well. Best method of finding out fuel consumption for your loads is to run each one separately, if your process permits, on a weekend for 2 hours. To calculate the fuel consumption, there are two methods: i) Install a flow meter in the suction line of the fuel pump near the tank (very reliable & accurate) ii) If the fuel is flowing from a day tank, note down the INITIAL LEVEL (say L1) & INITIAL KWh reading (say W1). Start the DG set & give one load at a time & run for, say, 2 hours. Now measure the FINAL LEVEL (say L2) & FINAL KWh reading (say W2) Energy generation, units per liter = (W2-W1) / (L2-L1) Otherway, liter per units = (L2-L1) / (W2-W1) Let me know if this helps you. Of course there are good electronic gadgets available to measure the same parameters, but does not justify the investment for one DG alone.

every one i want to tell u that i need any equipment how calculate the diesel consumption of generator by the voltage? thanks for corp.....................

Try this:

• Put a totalising flowmeter on the fuel line to one of the units.
• Get a dipstick, a tape measure and a clock.
• The rate of consumption of <...diesel...> to one unit is measured by the flowmeter.
• The rate of consumption of both units is measured by the dipstick, the tape measure and some arithmetic based on the shape and levels of the storage tank.
• Subtract one from the other to get the consumption of the second unit.

Simplesξ.