Experimental study of pipe-pile-based micro-scale compressed air energy storage (PPMS-CAES) for a buildingJingtao Zhang, Hoyoung Seo, Sihyun Kim, Junyoung Ko and Seunghee KimE3S Web Conf., 205 (2020) 07012DOI: https://doi.org/10.1051/e3sconf/202020507012