Development of control system and monitoring via the internet based on Arduino Uno on the use of condensate water in the refrigerator
Eddy Erham(a*), Markus(a) , Ary Surjanto(a) ,and Rafa Naufal(b)

a). Department of Refrigeration and Air Conditioning, State
Polytechnic of Bandung (POLBAN), Indonesia.
*Corresponding author: eddy.erham[at]polban.ac.id
b). Alumnus of Department of Refrigeration and Air
Conditioning, State Polytechnic of Bandung, Indonesia

Abstract

The condensate water in the refrigeration system is liquid of the result of condensation process, usually thrown away without being used. In this paper, to use the condensate water was designed a control system and monitoring via the internet based on Arduino Uno with application to a refrigerator. This design includes both the design of control system for cabin temperature and for condensate water spraying. In this case, the Arduino was uploaded with control system algorithm. In addition, the monitoring system was designed using laptop, LCD and smartphone screen with the ThingSpeak application. The results show that the proposed control system was able to maintain the desired cabin temperature with design error in the range of 0.120C - 0.130C. Meanwhile, the control system for spraying was be able to determine when the desired spraying occurred. When the spraying was set at temperature of 39C, it not only increased the COP by 10%, but also decreased the electrical power consumption by 8.8%. Thus, the method of proposed system is better than the method of existing one.

Keywords: control system- monitoring- condensate water- Arduino Uno- ThingSpeak

Topic: Mechanical Engineering