Desain Saluran Udara Untuk Pengkondisian Udara Gudang Urea Ekspor Kapasitas 20.000 Ton
Abstract - A fertilizer company in Gresik plans to build a urea warehouse with a capacity of 20,000 tons to store urea before export. Urea fertilizer is able to absorb and bind air moisture with its hygroscopic properties. To overcome this problem, it is important to maintain a stable temperature in the urea warehouse, where the expected urea temperature stability is 40 degrees Celsius. The initial stage of this research was carried out by calculating the heating load (internal & external) generated by the warehouse. Furthermore, calculations are carried out for heat supply and air flow to determine the amount of heat needed by the urea warehouse, if the urea flow rate is 95 tons / hour, sensible heat urea is 1.34 kj / kg, and there are air openings through the door and conveyor channel. This research was conducted to design the right air duct design, ranging from the needs of blowers to ducting. where based on calculations obtained Spec blower with flow rate of 44,735 NCfm, blower pressure 1842.94 Pa and blower hydraulic power of 48.61 kW. In addition, the air ducts used were obtained in the form of rounded ducts with diameters of 1.5m, 1.3m, 1.15m, 1m, and 0.65m..