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ANALYSIS OF VARIATION IN HEAT CONDUCTING PIPE POSITION AND AIR VELOCITY ON DRYING RATE, MOISTURE CONTENT AND DRYING EFFICIENCY OF TAPIOCA CRACKERS Amriadi Amriadi; Mietra Anggara
Mechanical, Energy and Material (METAL) Vol. 1 No. 2 (2023): Desember: Mechanical, Energy and Material (METAL)
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/metal.v1i2.37

Abstract

One of the essential processes in the production of krupuk (crackers) is the drying process, commonly carried out using traditional sun-drying methods. Effective drying necessitates even heat distribution, which can be challenging to achieve with direct sun drying due to weather fluctuations. However, with technological advancements, natural drying methods have been improved to enhance drying efficiency. Moreover, the development of drying equipment has shifted from natural drying to forced drying using the principle of fluidization. Experimental testing of the heat pipe position and air velocity can be conducted to understand the heat One of the essential processes in the production of krupuk (crackers) is the drying process, commonly carried out using traditional sun-drying methods. Effective drying necessitates even heat distribution, which can be challenging to achieve with direct sun drying due to weather fluctuations. However, with technological advancements, natural drying methods have been improved to enhance drying efficiency. Moreover, the development of drying equipment has shifted from natural drying to forced drying using the principle of fluidization. Experimental testing of the heat pipe position and air velocity can be conducted to understand the heat distribution during the drying process. The objective of this research is to investigate the variation of heat pipe positions and air velocities' influence on the drying rate, moisture content, and drying efficiency of krupuk. The study involves three research variables: Independent Variables: a. Designing the heat pipe in a vertical position. b. Designing the heat pipe in a horizontal position. Air Velocity: a. Air velocity of 2 m/s. b. Air velocity of 1.5 m/s. c. Air velocity of 1 m/s. Based on the comparison of values from the two positions, it was found that the vertical heat pipe resulted in the best drying rate of 1.65 g/minute, while the horizontal heat pipe yielded 1.67 g/minute. Regarding moisture content, the vertical heat pipe had a value of 3.6%, while the horizontal pipe had 2.6%. For the best efficiency, the vertical heat pipe achieved 1.9%, and the horizontal pipe achieved 2%. It can be concluded that the drying rate and moisture reduction significantly affect the efficiency of the kerupuk drying machine. The higher the quantity of material dried, the higher the efficiency achieved with the same fuel.
Efektivitas Penerapan Modul dan LKPD Berbasis HOTS dengan Model PBL pada Mata Pelajaran Ekonomi Amriadi Amriadi; Muhammad Azis; Tuti Supatminingsih
JURNAL PENDIDIKAN IPS Vol. 15 No. 4 (2025): JURNAL PENDIDIKAN IPS
Publisher : STKIP Taman Siswa Bima

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37630/jpi.v15i4.3513

Abstract

Rendahnya capaian peserta didik Indonesia dalam survei internasional seperti PISA mengindikasikan lemahnya keterampilan berpikir kritis, analitis, dan pemecahan masalah. Pada mata pelajaran ekonomi di tingkat Madrasah Aliyah, pembelajaran masih cenderung bersifat teoritis dan berpusat pada guru, sehingga peserta didik kurang mampu menghubungkan konsep dengan fenomena nyata. Pertanyaan utama yang diajukan dalam penelitian ini adalah apakah penggunaan modul dan LKPD berbasis Higher Order Thinking Skills (HOTS) melalui model Problem Based Learning (PBL) efektif meningkatkan hasil belajar ekonomi peserta didik. Penelitian ini menempatkan diri pada kajian inovasi pembelajaran yang mengintegrasikan desain bahan ajar berbasis HOTS dengan pendekatan PBL yang kontekstual, suatu kombinasi yang masih jarang dikaji dalam bidang ekonomi di madrasah. Metode penelitian yang digunakan adalah eksperimen sederhana dengan desain One Group Pretest–Posttest. Subjek penelitian adalah 30 peserta didik kelas XI MA Arifah Gowa. Data dikumpulkan melalui tes hasil belajar, observasi keterlaksanaan pembelajaran, dan angket respon peserta didik serta respon guru. Analisis data dilakukan dengan uji paired sample t-test, perhitungan N-Gain, dan persentase. Hasil penelitian menunjukkan peningkatan signifikan hasil belajar dengan rata-rata N-Gain 0,58 kategori sedang, keterlaksanaan pembelajaran sangat baik, serta respon peserta didik positif. Penelitian ini menyimpulkan bahwa integrasi modul dan LKPD berbasis HOTS melalui PBL efektif menjadikan pembelajaran ekonomi lebih bermakna dan relevan dengan kehidupan peserta didik.