Affiliation:
1. Business School, Hunan Agricultural University, Hunan Changsha, China
Abstract
By constructing the heat transfer model of the buried tube heat exchanger,
using the mathematical method and numerical calculation software, the
temperature of the buried tube heat exchanger is calculated numerical, so as
to better understand the temperature effect of the buried tube heat
exchanger on the surrounding soil. This paper establishes a mathematical
model of a vertically buried heat transfer system based on the principle of
thermal equilibrium and the thermal conductivity differential equation.
Conduct research on the temperature field around single pipes in different
soil (geological conditions), temperature field under different drilling
backfill materials, and the temperature around buried pipelines in both
short-term and long-term operation of the system. The experimental results
show that the simulation results of the system?s short time (10 days) and
long time (90 days) performance show that the cooling and temperature cycles
in different areas directly affect the heat radius of the buried pipe and
the heat accumulation near the buried pipe. The thermal action radius of the
short-term operation system is about 1.8 m, and the long-term operation
reaches 4.5 m.
Publisher
National Library of Serbia