Studi Eksperimental Alat Pengering Kunyit Menggunakan Pompa Kalor Kondensor Ganda Siklus Tertutup

Abstract

Turmeric is a plant that comes from the ginger family using the Latin name Curcuma longa or Curcuma domestica Val. Turmeric is spread in all tropical regions. Turmeric is a plant that has many benefits, which are used as medicinal plants, ingredients for cooking spices, coloring agents, natural preservatives, basic ingredients for making herbal medicine, raw materials for the food and beverage and cosmetic industries. Therefore, a turmeric dryer is needed, because if you still use the traditional method there will be many obstacles in drying. This is because the drying process using the sun which takes 3 to 4 days, certainly makes some turmeric become moldy and the drying temperature of curcumin is below 50 Therefore, testing of a closed-cycle double condenser heat pump turmeric dryer was carried out because the heat pump has many advantages such as more hygienic, temperature and humidity of the drying air are easily controlled so that it can be used in a wide temperature range according to needs. In addition, the quality of the dried material becomes better, does not depend on the outside weather and does not produce smoke that pollutes the atmosphere. The double condenser in this tool is expected to increase the efficiency of heat transfer in the heat pump system where the heat load distribution becomes more evenly distributed. In this test, the final weight is obtained 0,2272 kg from the initial weight of 1 kg and the moisture content is below 8% of the initial moisture content of 84%. The value of turmeric drying rate is the minimum value of 0.0186 kg / hour, the maximum value is 0.222 kg / hour, 0.12914491 kg / hour. The value of the specific water extraction rate (Specific Moisture Extraction Rate) is the minimum value is 0.04232 kg/kWh, the maximum value is 0.421252 kg/kWh, the average value is 0.24215484 kg/kWh. Specific energy consumption values are: minimum value of 2.373874 kWh/kg, maximum value of 23.62949 kWh/kg, and average value of 5.76889277 kWh/kg as well as heat pump drying efficiency of 24.7%.