Photovoltaic System Powering Automatic Control of Air Circulation

摘要

The demand of cooling system in equator region isudsignificantly high due to the hot ambient temperature. Oneudadvantage in this region is the high intensity of sunlight that isudpotential for solar energy system application. For these reasons,udthe innovation of cooling system design is recommended byudchanging the perspective of conventional of air conditioningudsystem to cooling fan powered by photovoltaic system. In ourudproposed design, the temperature sensors of LM35 are used toudcollect temperature information inside and outside roomudprototype, respectively. Both temperature measurements areudprocessed in the control system which is very simple because onlyuddepending on the temperature threshold for the ON/OFFudoperations of cooling fan. The control circuit is developed withudelectronic components and microcontroller ATmega8535 toudtranslate the program written in Codevision AVR software forudair circulation task. The prototype system has been tested in clearudand cloudy sky environment and the testing results may provideuddifferent responses on system prototype and confirm theudtemperature control system performs properly.