Speaker
Description
The purpose of this study is to compare the local air temperature and heat transfer of the different diameters of the serpentine copper pipe heat exchanger. This serpentine copper pipe heat exchanger is targeted for use as a climate control system inside the greenhouse cultivation. The local air temperature means the air temperature which is close to the heat exchanger. The experiments were implemented in the laboratory room. The diameters of the copper pipe were 12.7 mm and 15.88 mm. The cooling experiments were performed. The experimental conditions are varied by inlet fluid temperature and flow rate. The inlet fluid temperature range was between -5 and 10 °C whereas the fluid flow rate was controlled between 0.3 to 3.0 L/min. The experimental data such as local air temperature, inlet and outlet fluid temperatures, surface pipe temperatures, pressure drop, and relative humidity were measured. The results indicated that the local air temperature was slightly reduced when using a 15.88 mm diameter than that of a 12.7 mm diameter. As a result, a larger diameter should be selected for the lower air temperature reduction is needed.
