Abstract
This study aims to design, construct and test the waste heat recovery by closed-loop oscillating heat pipe with check valve from pottery kilns for energy thrift, were used the working fluids with a filling ratio of 50%. The (CLOHO/CV) was made of copper capillary tube with inside diameter of 2.03 mm. The lengths of evaporator and condenser section were 20 cm. The lengths of adiabatic section 10 cm. The number of turn was 40 meandering turns. The ratio of number of check valves was 0.04. The evaporator section was heated by hot gas, while the condenser section was cooled by fresh air. From the experiment, it indicated that the working fluid changes form water to R123, the heat transfer rate increased to 4,800 and 7,900 Watts and the effectiveness increased from 0.32 to 0.44. The CLOHP/CV heat exchanger can reduce the quantity of using gas in pottery kilns and achieve energy thrift.
Highlights
Qout CondenserIn the application of closed-loop oscillating heatpipe with check valves (CLOHP/CV) heat exchanger for the waste heat from pottery kilns, because it can reused the waste heat recovery in pottery kilns systems for energy thrift
The check valve is a floating type valve that consists of a stainless ball and copper tube, in which ball stopper and conical valves seat are provided at the ends, respectively[3]
The check valves: The check valve is a floating type valve that consists of a stainless ball and copper tube, in which ball stopper and conical valves seat are provided at the ends, respectively
Summary
In the application of closed-loop oscillating heatpipe with check valves (CLOHP/CV) heat exchanger for the waste heat from pottery kilns, because it can reused the waste heat recovery in pottery kilns systems for energy thrift. The CLOHP/CV was widely accepted as the most efficient heat transfer device It can the heat transfer by itself with latent heat of working fluid in the tubes. The check valve is a floating type valve that consists of a stainless ball and copper tube, in which ball stopper and conical valves seat are provided at the ends, respectively[3]. It incorporates one or more direction-control one-way check valves in the loop so that the working fluid can circulate in specified direction only. The check valves: The check valve is a floating type valve that consists of a stainless ball and copper tube, in which ball stopper and conical valves seat are provided at the ends, respectively. The ball can move freely between the ball stopper and the valves seat in shown Fig. 3
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