DDF system LNG trial on 37 percent energy efficient generator train

Jakarta – Pertamina’s Gas Subholding through PT PGN LNG Indonesia (PLI) conducted a trial of converting fossil fuel to liquefied natural gas (LNG) using the Diesel Dual Fuel (DDF) system on a power train owned by PT KAI. PLI claims that the energy efficiency from the use of LNG from the DDF system has cumulatively reached 37 percent.

In a written statement, Tuesday (5/7), PLI President Director Nofrizal said the trial was carried out on PT KAI’s Dharmawangsa Jakarta-Surabaya power plant. Dynamic tests are also carried out to obtain the substitution value for diesel energy or the amount of gas used in the DDF system.

“The efficiency of the existing Diesel Engine Generator (DEG) system is 35 percent. It is hoped that it will run according to the target, namely encouraging efficiency at PT KAI and encouraging the utilization of gas fuel,” said Novrizal.

He said, in terms of gas substitution with an average load of 22 percent, the dynamic test can provide substitution of about 43 percent of the existing fuel. The converted train has a power capacity of 500 kVA, adding that “if the load is 100 percent, the fuel consumption on DEG can reach 110 liters per hour”.

In this trial, there is no need to make major modifications to the diesel engine and it is easier to return to the original engine. In addition, it can be adjusted according to the settings on the DEG engine belonging to KAI. The LNG used comes from Jambaran Tiung Biru or the East Java LNG Terminal or other sources.

“From the trial, we get an overview of the operation of the DDF system and the results show that LNG has the opportunity to be used as fuel for power plants,” said Novrizal. (Hartatik)

Banner photo: DDF dynamic test on the Dharmawangsa train power plant Jakarta – Surabaya, resulted in a cumulative efficiency of 37 percent of energy. (Source: Doc. Pertamina)

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