Study On Ground-source Heat Pump Combined With Water Storage Air-conditioning System

The rapid economic development has led to the sustained growth of energy consumption. Reasonable and efficient use of energy to get people more and more attention."Low-carbon green" become a trend. Buildings with high energy consumption makes people look forward to using the new energy-saving technology to reduce energy consumption, improve the energy use conditions. Ground source heat pump using renewable geothermal energy, water storage technology cut the peak and valley, The two technologies have obvious advantages to attract attention. Their combination of rational design must be able to reach a satisfactory social and environmental effects.This topic research the form of ground-coupled heat pump combined with water storage air-conditioning system, system’s adaptability to different types of buildings, The best end of the formal system can be used and while system use fire pool regenerative, the impact of various factors on the hot water temperature stratification.First, analysis the necessity of ground source heat pump combined with water storage system, and advantages of system, then make the system flow chart.Secondly, according to the different building categories selected typical building (includeing sports buildings, office buildings, hotel buildings, residential buildings)..By using the dynamic load simulation software DeST simulate cold and heat load change throughout the year of different types of buildings. According to the change trend analysis of the feasibility of types of buildings to use composite system, and operation strategy, Then analysis the the best form of construction end of the loading system. Find out that sports building, hotel buildings, stores and office buildings are suitable for the use of ground-coupled heat pump combined with water storage air-conditioning system, while the house is not suitable to use. Third, set up two kinds fire pool regenerative three-dimensional model:without and with the water distribution. Used for simulation of the ground source heat pump units for heat storage of various factors on the thermal efficiency of the storage effect. There are two models without water distribution and three models without water distribution. All models the same size, length, width and height of different sizes. Used for simulation analysis on the inlet temperature and entry speed to the cold, hot water temperature stratification and the thermal efficiency of the regenerative effect. Through the simulation analysis, we can conclude that:the models without water distribution, which is difficult to form a stable temperature stratification, storage of the thermal efficiency is low; the models with water distribution, when regenerative high-temperature water flows from the above, the low-temperature water outflow from the following, can form a stable thermal stratification, hot and cold water mixed less help to improve the regenerative efficiency of fire pool.