Thermal Analysis Of Ground Heat Exchangers For Ground Source Heat Pump

Ground-coupled heat pump (GCHP) air conditioning systems utilize ground soil as a heat or sink source, achieve heat transfer between the ground soil and a working fluid circulating in a closed loop buried in the ground. Compared to other conventional alternatives, the ground-coupled heat pump system makes full use of renewable energy, and protects the environment and reduces electric power consumption. It has been applied in Europe and American for a few decades. In recent years the technology has been paid attention to also in China, and a few GCHP projects have been completed. However, researches on design of the ground heat exchangers are far from adequate. On the base of de parted production, the paper set up the heat transfer model and study on it .As vertical U-Tube ground-coupled heat pumps have become the most widely used heat pumps because of many outstanding advantage it has, such as: fewer area requirement, fewer limits, running steadily, better performance, lower costs on system maintenance etc, the thesis lays emphasis on vertical U-tube heat exchangers. Main content of the paper:1. The physical and mathematical models were set up to simulate the ground heat around the U-tube heat2. ANSYS procedures used to prepare the ground source heat pump heat exchanger temperature distribution analysis of the results: single-tube heat exchanger pipe to the surrounding radius; The different backfill material has an obvious effect on systems, so it is necessary to seriously study the material for backfill3. The kinds of ground heat exchanger, the position of pipe, the diameter length and connection of the pipe, the system of distribution of indoor air are studied. And the factors of affection GSHP are analyzed by ANSYS. The design process of GSHP is expoundedThe Ground-Source Heat pump is a fresh domain in china and has a promising level opine. This article issue of concern has conducted the fundamental research in...