RANCANG BANGUN SISTEM PENGKODISIAN UDARA PADA HEAT PUMP DAN UJI PERFORMANSI SISTEM HEAT PUMP DAN SWIRLING FLUIDIZED BED UNTUK PENGERING CASCARA

Septian, Andino (2021) RANCANG BANGUN SISTEM PENGKODISIAN UDARA PADA HEAT PUMP DAN UJI PERFORMANSI SISTEM HEAT PUMP DAN SWIRLING FLUIDIZED BED UNTUK PENGERING CASCARA. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Cascara berarti "kulit" dalam bahasa Spanyol. Cascara adalah sejenis kulit kopinya bukan kopi, karena warna minuman ini sering seperti teh, makanya disebut Teh Cascara yang tidak memiliki rasa kopi sama sekali. Teh Cascara kini semakin populer di Indonesia, Meski minuman ini sudah populer di negara-negara lain di dunia, ada beberapa cara pengolahan cascara ini. Proses, yaitu pemisahan produk utama yaitu kopi (pulping), kemudian dikeringkan, diparut, Pengemasan, pembuatan bir. Dari awal pengolahan, jika dilakukan pengeringan, ada beberapa seperti pengeringan tradisional yang mengarah pada penurunan produktivitas Petani, atau pengeringan yang salah menyebabkan pembuatan bir cascara berbeda dari biasanya. Oleh karena itu, pengeringan sangat penting dalam pengolahan kopi, dan tidak ada kualitas pengeringan yang baik Biji kopi tidak akan menjadi yang terbaik.
Penelitian ini bertujuan untuk merancang bangun sistem pengering dengan menggunakan Heat Pump dan Swirling Fluidized Bed yang diasumsikan jauh lebih efisien ketimbang menggunakan pengeringan cara konvensional dengan temperatur outlet udara pengering sebesar 45 0C. Dengan cara melakukan analisis udara pengering menggunakan Psychrometric Chart dan menentukan set point temperatur, tekanan untuk mendapatkan parameter-parameter sistem refigrasi seperti jenis refrigeran, m ̇refrigrant.Setelah itu dilakukan Pengujian Uji Performansi dengan variasi kecepatan Blower untuk mendapat mengetahui pengaruh dari kecepatan Blower terhadap drying rate dan efisiensi sistem HPD dan SFB. Uji performansi ini dilakukan dengan menggunakan sampel seberat 1000 gr massa basah lalu massa ditimbang dengan menggunakan timbangan digital pada setelah 30 menit selanjutnya setiap interval 10 menit. Lalu mengukur RH, Temperatur udara pengering, Temperatur Refrigrant, dan Tekanan Refrigrant.
Hasil yang didapatkan dari penelitian ini yaitu hasil perencanaan untuk mendapatkan Temperatur outlet pengering dengan menggunakan refrigeran R-134 a, dengan set point temperatur, tekanan evaporator masing-masing 50C, 3,496 bar, lalu set point temperatur, tekanan kondensor masing-masing 500C, 13,176 bar, selanjutnya m ̇refrigrant sebesar 0,0143 kg/s. Lalu hasil pengujian menggunakan variasi kecepatan Blower ditemukan besar drying rate diantaranya 0,00034 g/s (10 m/s), lalu 0,00023 g/s (7 m/s), lalu 0,00022 g/s (5 m/s). Besar efisiensi diantranya 56,45 % (10 m/s), lalu 46,57 % (7 m/s) , dan 43,97 % (5 m/s).
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In Spanish, cascara means "skin." Cascara is a type of coffee skin, not coffee; yet, because the color of this drink is sometimes similar to tea, it is referred to as Cascara Tea, despite the fact that it has no coffee flavor. Cascara tea is becoming more popular in Indonesia, despite the fact that it is already popular in other countries. There are numerous ways to prepare cascara tea. The separation procedure, to be precise. Of the primary product, coffee (pulping), followed by drying, grating, packing, and brewing. If drying is done at the start of the process, there are numerous options, such as typical drying, which reduces farmer output, or wrong drying, which causes cascara brewing to be different than usual. As a result, drying is critical in the coffee manufacturing process, and there is no substitute for good drying quality. The quality of the coffee beans will be poor.
The goal of this research is to create a drying system that uses a Heat Pump and a Swirling Fluidized Bed, which is expected to be significantly more efficient than traditional drying with a drying air output temperature of 45 0C. Using a Psychrometric Chart to analyze the drying air and determine the set point temperature and pressure, the parameters of the refrigeration system such as the type of refrigerant, refrigrant are obtained. Then, to assess the influence of Blower speed on drying rate and efficiency of HPD and SFB systems, a Performance Test was conducted with various Blower speeds. A sample weighing 1000 grams of wet mass was used in this performance test, and the mass was weighed using a digital scale after 30 minutes and every 10 minutes intervals. Then take measurements of the relative humidity, drying air temperature, refrigerant temperature, and refrigerant pressure.
The results of this study were reached by intending to obtain the dryer's outlet temperature using the refrigerant R-134a, with temperature set point, evaporator pressure each 50C, 3,496 bar, then set point temperature, condenser pressure each 500C, 13,176 bar, and m ̇refrigrant is 0.0143 kg/s. The drying rate was 0.00034 g/s (10 m/s), then 0.00023 g/s (7 m/s), and finally 0.00022 g/s (5 m/s), according to the findings of tests utilizing different Blower speeds. 56.45 percent (10 m/s) efficiency, 46.57 percent (7 m/s), and 43.97 percent (5 m/s) efficiency.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Cascara, Heat Pump, Swirling Fluidized Bed, Psychrometric Chart, Refrigeran, Drying rate, Efisiensi. Cascara, Heat Pump, Swirling Fluidized Bed, Psychrometric Chart, Refrigrant, Drying rate, Efficiency.
Subjects:	Q Science > QC Physics > QC320 Heat transfer T Technology > TJ Mechanical engineering and machinery T Technology > TJ Mechanical engineering and machinery > TJ230 Machine design T Technology > TP Chemical technology > TP492.3 Refrigeration and refrigerating machinery
Divisions:	Faculty of Vocational > Mechanical Industrial Engineering (D4)
Depositing User:	Andino Septian
Date Deposited:	12 Aug 2021 08:03
Last Modified:	12 Aug 2021 08:03
URI:	http://repository.its.ac.id/id/eprint/85725

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