Electronic Theses and Dissertation

Heat recovery steam generator (hrsg) adalah suastu sistem ketel uap yang terdiri dari superheater, evaporator dan ekonomiser dengan memanfaatkan energi gas buang turbin gas sebagai energi panas. uap yang dihasilkan oleh ketel uap (hrsg) terdiri dari dua sistem tekanan, yaitu sistem tekanan tinggi (high pressure, hp) dan sistem tekanan rendah (low pressure, lp). pada perancangan ini dianalisis siklus termodinamika dan perpindahan panas pada ketel uap (hrsg). pada sistem uap tekanan tinggi (high pressure) direncanakan tekanan sebesar 71,58 bar (7,158 mpa), yang terdiri dari komponen-komponen penukar panas yaitu: hp superheater, hp evaporator, hp ekonomiser, sedangkan pada sistem uap tekanan rendah (low pressure) direncanakan tekanan sebesar 7,05 bar (0,705) mpa yang terdiri dari lp superheater, lp evaporator, condensat preheater. pada perhitungan sistem tekanan tinggi diperoleh koefisien perpindahan panas menyeluruh (u) pada hp superheater (82,71w/m^2.°c), hp evaporator (67,03 w/m^2.°c), hp ekonomiser (75,91 w/m^2.°c) sedangkan pada sistem uap tekanan rendah diperoleh koefisien perpindahan panas menyeluruh (u) pada lp superheater (84,75 w/m^2.°c), lp evaporator (51,23 w/m^2.°c) dan condensat preheater (74,87 w/m^2.°c).

Heat Recovery Steam Generator (HRSG) is a steam boiler system consisting of a superheater, an evaporator and an economizer by utilizing gas turbine exhaust energy as heat energy. The steam produced by the steam boiler (HRSG) consists of two pressure systems, namely a high pressure system (HP) and a low pressure system (Low Pressure, LP). In this design, the thermodynamic cycle and heat transfer in the Steam Boiler (HRSG) are analyzed. In the high pressure steam system, the planned pressure is 71.58 bar (7.158 Mpa), which consists of heat exchanger components, namely: HP Superheater, HP Evaporator, HP Economizer, while in a low pressure steam system (Low Pressure) the planned pressure is 7.05 bar (0.705) Mpa which consists of LP Superheater, LP Evaporator, Condensate Preheater. In the calculation of the high pressure system, the overall heat transfer coefficient (U) is obtained for the HP superheater (82.71W/m^2.°C), HP Evaporator (67.03 W/m^2.°C), HP Economizer (75, 91 W/m^2.°C) while in the low pressure steam system the overall heat transfer coefficient (U) is obtained at the LP superheater (84.75 W/m^2.°C), LP Evaporator ( 51.23 W/m ^2.°C) and Condensate Preheater (74.87 W/m^2.°C).