Abstract The purpose of this project is to design and build the internal cooling system, toilets, a small movement. By the adoption of a series of small cooling machine, and it works within, which is the temperature inside a small mobile toilets to save energy use within the toilet because that power has been applied it is electrical energy derived from solar cells. Electric power consumption, which has limited backup.To adjust the temperature of the Interior of this small mobile toilet. System cooling fan, Patrick will start when the outside temperature is 26° c and has a value, the compressor will start when the outside temperature is up to 30 degrees Celsius.The results of the study found that the internal temperature is not that the us will lead the mobile toilet small indoor or outdoor environment, the average temperature will average no more than away 1-4 degrees Celsius. To reduce the temperature inside by using the functionality of the raft, it will reduce the temperature of cooling up to 5-10 degrees Celsius, and the use of a compressor to reduce the internal temperature can reduce the temperature. 4-8 degrees Celsius, and the difference between the rooms that are installed with cooling systems that do not have to install a cooling system. Temperatures will average approximately away 1-5 degrees Celsius.
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