Rahmah, L. A., Sa’adiyah, D. S., & Sulistijono, S. (2019). Analyze The Effects of Helical Baffles Angles Variation On Shell Side Heat Transfer Coefficient And Pressure Drop of Shell And Tube Heat Exchange. SPECTA Journal of Technology, 2(1), 43–52. https://doi.org/10.35718/specta.v2i1.94