I Dewa M.C. Santosa, I Gede N. Suta Waisnawa, Made Ery Arsana



Indonesia is one of the largest producers of horticultural, especially tropical fruits and vegetables. Because of tropical country, the outdoor temperature and humidity are relatively high, so that the horticultural products are decay very fast. In several developing countries including Indonesia, as much as 40% of fruits and vegetables from total production are becoming waste due to lack of refrigerated. The existing medium temperature refrigerator (MT refrigerator) system has temperature controler only, so it still can not maintain the quality of the products. This research is aimed to get optimization of MT refrigerator system with the best option of humidifier technology and efficient operation. The research method will be conducted by re-design of existing medium temperature refrigerator system technology and will be given an innovation of an artificial and natural humidifier with precision setting system, then commenced test will be done, followed by performance test of the system. The results show that the performance of the system using mechanic humidifier is higher approximately 3%-5% than the natural one. In summary, the research has been obtained more effective humidity system, however for natural humidifier need to be more performance test especially in the rural area which has higher humidity and lower ambient temperature.

Keywords: refrigerator, medium temperature, humidifier, fresh vegetable, fresh fruit


Indonesia merupakan salah satu produsen terbesar untuk produk holtikultura terutama buah-buahan dan sayuran. Namun di lain pihak, karena temperatur dan kelembaban udara lingkungan sangat tinggi maka produk-produk tersebut sangat cepat mengalami pembusukan. Di negara berkembang seperti Indonesia, sebanyak 40% buah dan sayur dari produksi totalnya terbuang dan menjadi sampah (waste) karena kurangnya pendinginan. Sistem refrigerator medium temperatur (MT) yang ada pada saat ini baru mempunyai pengaturan suhu saja sehingga masih mempunyai kelemahan yang tinggi untuk menjaga kualitas produk-produk yang disimpan. Tujuan dari penelitian ini adalah untuk mendapatkan optimasi sistem refrigerator MT dengan pilihan teknologi humidifier dan pengoperasian yang efisien/hemat. Metode penelitian dilakukan dengan re-desain teknologi sistem refrigerator medium temperatur yang sudah ada dan akan di berikan inovasi berupa humidifier buatan dan alami dengan sistem pengaturan yang presisi, kemudian sistem akan dilakukan commencing test, dilanjutkan dengan performance test dari sistem. Analisis terhadap performasi mesin refrigerator didapatkan bahwa dengan mengunakan humidifier mekanik performansi sistem lebih tinggi berkisar 3%-5% pada lingkungan pengujian di Lab Refrigerasi-Politeknik Negeri Bali. Dengan demikian hasil dari penelitian ini sudah didapatkannya produk teknologi tepat guna berupa refrigerator medium temperatur dengan pengaturan suhu dan kelembaban yang efisien dan hemat listrik.

Kata kunci : Sistem refrigerator, medium temperatur, humidifier, sayur, buah segar.


ASHRAE, 2014. ASHRAE Hand book of Refrigeration. ASHRAE, Inc., Atlanta.

BPS Propinsi Bali tahun 2017, available at

Coulomb D., 2008, Refrigeration and cold chain serving the global food industry and creating a better future: two key IIR challenges for improved health and environment, Food Science and Technology. 19: 413-417.

Delele M.A, Schenk A., Ramon H., Nicolaï B.M., Verboven P. 2009, Evaluation of a chicory root cold store humidification system using computational fluid dynamics, Journal of Food Engineering. 94 : 110–121.

Gogou E., Katsaros G., Derens E., Alvarez G., Taoukis P.S., 2015, Cold chain database development and application as a tool for the cold chain management and food quality evaluation, International Journal of Refrigeration. 52: 109-121.

Hasbi, Saputra D., Juniar, 2005, Masa Penyimpanan Buah Manggis (Garcinia Mangostana L.) pada Berbagai Tingkat Kematangan , suhu dan kemasan, Jurnal Teknologi dan Industri Pangan. Vol.XVI No.3.

Laguerrea O., Hoanga H.M., Flick D., 2013, Experimental investigation and modelling in the food cold chain: Thermal and quality evolution, Food Science and Technology, 29: 87-97

Nahman A., Lange W.D., 2013, Costs of food waste along the value chain: Evidence from South Africa, Waste Management. 33:2493–2500.

Paull R. E., 1999, Effect of temperature and relative humidity on fresh commodity quality, Postharvest Biology and Technology. 15 : 263–277.

Rafani I., 2014, Strategic Plan of Indonesian Ministry of Agriculture: 2015-2019, Indonesian Center for Agriculture Socio Economic and Policy Studies (ICASEPS), Ministry of Agriculture, Indonesia.

Rediersa H., Claesa M., Peetersa L., Willemsa K.A., 2009, Evaluation of the cold chain of fresh-cut endive from farmer to plate, Postharvest Biology and Technology. 51: 257–262.

Suta W., Santosa I D M C, Sunu, 2018, Model Development of Cold Chains for Fresh Fruits and Vegetables Distribution: A Case Study in Bali Province, Journal of Physics:conference series, 953 (1), 012109

Tassou S.A, De-Lille G., Ge Y.T., 2010, Food transport refrigeration – Approaches to reduce energy consumption and environmental impacts of road transport, Applied Thermal Engineering. 29: 1467–1477.

Tassou S.A, Lewis J.S., Ge Y.T., Hadawey A., Chaer I., 2015, A review of emerging technologies for food refrigeration applications, Applied Thermal Engineering. 30:263-276.


  • There are currently no refbacks.

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License