Channel: Science & Technology Uploaded: December 31, 1969 at 11:59 pm Author: mvedenev Length: 00:08 Rating: N/A Views: 125 http://simulations.narod.ru/id... is simulation of heat pumping from underground for energy efficient house. It is 10 m boreholes. 8 boreholes. Each borehole has -20 cel degree. It is simulation of 6 years.