Hot At Nozzle
The purpose of the Hot At Nozzle (HAN) options is to avoid the loss of ineffective cold ADF fluid, cooled in external hoses during natural pauses, f.ex. in between aircraft deicing operations. Spraying cold fluid means longer operation time and loss of expensive and environmentally harmful ADF fluid. The HAN option ensures that fluid at tank temperature is available at the spraying nozzle at all times.
The purpose of the batch heating option is to ensure that hot fluid is available immediately after refilling with cold fluid. The tank which contains the fluid to be heated is subdivided into a larger tank section and a smaller batch section. The standard Vestergaard heater will heat the batch section first, and as the temperature rises, a valve ensures that the larger tank section is gradually heated as well. For a premix ADF, this allows for response times – from filling of cold fluid to spraying with heated ADF – of about 15 minutes for the Elephant® My or even 2-3 minutes for the Elephant® Beta.