ANALISA EFISIENSI BOILER PIPA API KAPASITAS UAP 30 TPH BERBAHAN BAKAR NATURAL GAS. JTM [Internet]. 2026 Oct. 30 [cited 2026 Nov. 4];15(2):169-7. Available from: https://jtm.ubl.ac.id/index.php/teknikmesin/article/view/94