... heat exchanger : 1.use to heat coffee in cup 2.aluminium heat exchanger 3.Cup Warmer, Mug Warmer, Coffee Heater Coffee Heater Aluminium Heat Exchanger ... (1). Type of Heater (2). Wattage and Voltage (3). Dia & length of the heater (4). Drawing or ... including Copper,Aluminium,SUS304,SUS316,SUS321 INCOLOY840,Incoloy800 3.Pipe Diameter are 6.6mm, 8.0mm and ... 9.8W/cm2. Coffee Heater Aluminium Heat Exchanger