Abstract This project aims to study the distribution of temperature inside the oven thermostat installation Siphon loop mounted check valve. The incubators are 50 x 50 x 50 cm (length x width x height), with Thermo Siphon loop mounted check valve. The size of evaporator 15 cm of heat 47 cm of condensate 47 cm and installation Dauphin diameter 30.70 cm thickness, 1 mm long pitch of fins 10 Fin length 1 in the fortification works. Using water as the working fluid and DI-Water + silver nano particles 0.5 wt% + potassium oleate 1 wt% (NA + OAK +) as a function of the rate of addition of 50% of the volume of the evaporator. And compared the distribution of temperature inside the oven without installing thermoplastic Siphon loop mounted check valve. The wind speed test 0.50, 1.0, 1.50 and 2.0 m / s and the temperature inside the oven at 60, 70, 80, found the wind speed 1.50 m / s at 60 hot air oven installed Thermo King. von loop mounted check valve. The working fluid NA + OAK + provides one uniform temperature distribution and thermal efficiency up to 69.01% when compared to the other experimental conditions. The increase in temperature causes a decrease in thermal efficiency. Consistent with the increased gas volume keywords. : Thermo Siphon loop installed VALVES / working fluid / temperature.
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