Increasing attension has been given to the development of compact refrigerator for space use. One of the typical examples is so called "thermoacoustic cooling engine". This paper describes the fundamental mechanism f such thermoacoustic c ooling engine and the application examples of the theory of thermoacoustics, such as pulse tube refrigerator and dream pipe, are explained.解説日本伝熱学会関西研究グループの企画による芦屋・奥池セミナ ー [New Phaseに挑む伝熱工学] (1991年8月3, 4日開催