Purba, Rasta, Tarigan, Kristian, Silaban, Supardiman, AND Sihite, Wiltzard. " ANALISIS EFEKTIVITAS ALAT PENUKAR KALOR AIR PREHEATER B TIPE ROTARY SEBELUM DAN SESUDAH OVERHAUL DI PLTU UNIT 2 PANGKALAN SUSU 2X200 MW OMU PT INDONESIA POWER" Jurnal Darma Agung [Online], Volume 30 Number 1 (29 February 2024)