Performance of the natural cooler to keep the freshness of vegetables and fruits in Medan City

TALENTA - Conference on Engineering, Science and Technology 2017

工业技术;自然科学

Sitorus, T.B.^1,2 ; Ambarita, H.^1,2 ; Ariani, F.^1 ; Sitepu, T.^1

Mechanical Engineering, Universitas Sumatera Utara, Indonesia^1

Sustainable Energy and Biomaterial Centre of Excellent, University of Sumatera Utara, Jl. Almamater Kampus USU, Medan

20155, Indonesia^2

关键词: Average air temperature;    Direct evaporative cooling;    Electrical energy;    Maximum Efficiency;    Parameter measurement;    Performance analysis;    Temperature changes;    Vegetables and fruits;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/309/1/012089/pdf
DOI  :  10.1088/1757-899X/309/1/012089

来源: IOP

【 摘 要 】

One application in a direct evaporative cooling system was a natural cooler. The advantages of this system were not using the electrical energy and so far also environmentally. This research aims to obtain a performance analysis of the natural cooler as a store for vegetables and fruits in Medan city. The materials for natural cooler consists of teak wood and gunny. This study makes experiments during seven days in the open air. The parameter measurement on the weather was using HOBO devices and to record the temperature changes for vegetables or even fruits is using its acquisition data. The results showed that the maximum efficiency of the natural cooler could be obtained for 43.79% in the average air temperature of 30.51°C, the air humidity average is 85.12% with average solar radiation of 183.98 W/m2. Experimental data were showing that the condition of freshness on vegetables or even on fruits was heavily influenced by weather conditions.