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Ring Main System from Nirmal Energy Limited | A widely known Projects of all


Nirmal Energy Limited is incorporated in India and based in Ahmedabad, Gujarat, as Nirmal Energy Pvt Ltd and became a public limited company in 2006, a growth-oriented, customer driven, technological and innovative products and solutions providing company.

Nirmal Energy Limited has association with Baltur S.p.A, Italy for their Burners and Heating Products. Similarly, Nirmal Energy Limited is working in cooperation with many International technology companies in the field for various kind of energy saving, Eco-friendly products for Heating and heat recovery applications.

Nirmal Energy Limited is also authorized marketing associate of Solutia Chemicals India Pvt Ltd / Solutia Inc., USA for its Therminol range of Heat Transfer Fluids for the Western Region of India. In its trading product segment, Nirmal Energy Limited is proudly associated with Grundfos Pumps as their sole distributor in Gujarat, India for their wide range of pumps for various applications like Boiler Feed, RO Plants, DM Plants, Cooling and Air Condition Systems, Heating and Hot Water service Systems and other industrial, commercial and domestic applications.

Ring Main System & It's details:

To achieve complete combustion, it is necessary to get good atomization. For the oil pressure atomization, it depends upon oil viscosity and other properties of the fuel oil used. As discussed above, to get good atomization of the available FO, it is to be heated up to 130 Deg. C (for heavy oil, maximum viscosity in accordance with DIN 51603 is 450 mm 2/s or 450 cSt at a temperature of 50 Deg. C. From the graph, which shows the viscosity

  • it can be seen that heavy fuel oil S remains pumpable up to value of 500 to 750 mm2/s or cSt. Since you are using pressure jet, oil return type atomization burner system, viscosity needed is 15 to 20 cSt  at the nozzle tip and this can only be achieved by heating up to 130 Deg. C and heating type nozzle rod in burner.
  • From the above data it is necessary that furnace oil must be heated up to about 50 Deg. C, to make it pumpable, and to approx 130 Deg. C to allow pressure atomization. As explained above, to facilitate heating up to 130 Deg. C and to suppress the boiling point of water (100 Deg. C at one bar), the oil should be supplied at 46 Kg/ cm2 at the in let of fuel oil pump.
  • This will avoid the vaporization of water content in the oil and low boilers in the furnace oil and in turn safeguard the fuel pump from cavitation problem and ensure proper operation of the burner system.

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