HE-Cool V1.0: Control Model of Hybrid Evaporative Cooler Prototype

Abstract

During the summer in Indonesia, the climatic conditions continually facilitate the development of one from developing the use of an evaporation-based air cooler to more effective use for sustainable users over long distances. Therefore, this research developed an evaporative cooler prototype system based on HE-COOL V1.0 control model with a design for speed regulation control. The design was conducted with an Arduino microcontroller with various buttons: button 1 represents a low speed, button 2 represents a medium speed, and button 3 represents a high speed. The voltage used in the control model was 9 volts which is a voltage drop from the power supply unit of 220 V, and the port on the Arduino pinout has a 5 V supply. Humidity was detected by a DHT11 sensor with an average percentage of 56% usage factor monitored during an air-conditioning tests process. In addition, the input uses an application installed on an Android smartphone that makes users control the Arduino (device) from a distance of 0 to 21 meters without barriers and 19 meters with barriers using Bluetooth communication between devices. Users can also store and observe the humidity output data through a real-time firebase web database system feature.