Experimental Investigation of Thermoacoustic Driven Thermoacoustic Refrigerator

The objective of this project is to fabricate a thermoacoustic prime mover that can be used as a drive for a thermoacoustic refrigerator and compare with theoretical results from Delta Ec. The thermoacoustic prime mover is part of an interesting class of prime movers that can be used to generate clean energy and to drive cryogenic refrigeration systems. A thermoacoustic prime mover has been built based on the linear thermoacoustic model, which consumes thermal energy and produces acoustic energy. A resonator of inner diameter 0.038 m and outer diameter 0.042 m was taken for open end system research. The stack length of 0.05m positioned at from the left end (closed end) of the TAPM 0.06 m resonator lengths 0.4, 0.5 and 0.8 m were selected to conduct the fabrication. The plates of two different thicknesses 0.0005 m and 0.0003m were taken for assembling the stack by separating each other by two different plate spacing 0.0005 m and 0.0003m thin spacers. The heat exchangers were made of copper plates with two different thicknesses 0.0005 m and 0.0003m with the corresponding plate spacing of stack. The TRA consists of tapered section was made out of copper block with a taper angle of 30o to cut short the connection. The bottom side of the taper was welded to the small diameter tube which was made of stainless steel. The inner and outer diameter of the tube was 0.02 m and 0.024 m respectively. This 0.2 m length smaller diameter tube was welded with the buffer volume made of stainless steel it has a volume of one litre, a wall thickness of 0.0002 m and a length of 0.25 m. To assure low thermal conductivity, Photographic film material was chosen. The length of the stack made of photographic film 0.035m.