%0 Thesis
%9 S1
%A Rianto, Andri
%B Teknik Mesin
%D 2025
%F eprintuntirta:51327
%I Fakultas Teknik Universitas Sultan Ageng Tirtayasa
%P 76
%T PENGARUH DESAIN HEATER TERHADAP PERFORMA    PROSES PRODUKSI GULA AREN CAIR
%U https://eprints.untirta.ac.id/51327/
%X The production process of liquid palm sugar requires a significantly long processing time, which can hinder farmers' productivity. One innovation developed to address this issue is the use of an electric heater in a vacuum evaporator system to accelerate the evaporation process at low temperatures, thereby preserving the quality of the palm sap. This study aims to determine the effect of heater design variations on thermal efficiency and evaporation rate in the production of liquid palm sap. The tests were conducted using three types of heaters: tubular (U), spiral, and finned tubular (U), each with a power of 500 watts and a vacuum pressure of -0.7 bar, used to heat 20 kg of liquid palm sap for 120 minutes. The results showed that the finned tubular heater had the highest thermal efficiency at 78.9%, due to its large contact surface area (1,112 cm²). However, the spiral heater demonstrated the highest evaporation efficiency of 8.56% and the highest evaporation rate of 1.67 × 10⁻⁵ kg/s, thanks to its even heat distribution and stable temperature throughout the process.
%Z Proses produksi gula aren cair memerlukan waktu produksi yang sangat lama. Waktu produksi yang lama tersebut dapat menghambat produktivitas petani. Salah satu inovasi yang dikembangkan adalah penggunaan heater elektrik pada sistem vacuum evaporator untuk mempercepat proses evaporasi pada suhu rendah  sehingga kualitas nira aren dapat terjaga. Penelitian ini bertujuan untuk mengetahui  pengaruh variasi bentuk heater terhadap efisiensi thermal dan laju evaporasi dalam produksi nira aren cair. Pengujian dilakukan menggunakan tiga jenis heater, yaitu heater tubular (U), heater spiral, dan heater tubular  (U ), masing-masing dengan daya 500 watt dan tekanan vakum -0,7 bar untuk memanaskan 20 kg nira aren cair selama 120 menit. Hasil pengujian menunjukkan heater tubular fin memiliki efisiensi termal tertinggi sebesar 78,9% karena luas permukaan kontak yang besar (1.112 cm²). Namun, heater spiral menunjukkan efisiensi evaporasi tertinggi   sebesar 8,56% dan laju penguapan tertinggi sebesar 1,67 × 10⁻⁵ kg/s, berkat distribusi panas yang merata dan kestabilan suhu selama proses berlangsung