Design of the Heat Pipe Helium Greenhouse for the Effective Use of the Soil Heat Amirhan Matyakubov, Kakageldi Saryyev, Serdar Nazarov and Gulshat Gurbanova E3S Web Conf., 288 (2021) 01068 Published online: 14 July 2021 DOI: 10.1051/e3sconf/202128801068