Design And Research On Energy Saving Renovation Project Of An Office Building In Tianjin

In today’s social progress,global climate warming is a matter of great concern to every country.The impact of rising temperatures is huge,which greatly affects people’s lives and production,develops a low-carbon economy,and builds A low-carbon society has become a global consensus.As can be seen from the data of the total energy consumption in China,the energy consumption of buildings is relatively large,with a period ratio of about27%.Moreover,the current growth trend has been continuing,which has been listed as a major aspect of "energy consumption".Based on this situation,various energy-saving strategies emerge at the right moment.Among these strategies,the air conditioning system plays a major role in building energy consumption.Whether the air conditioning cold and heat sources are reasonable or not is directly related to the investment,operation cost,energy consumption and many other problems of the project.In this context,ground source heat pump(GSHP)air conditioning,as a technology that can effectively utilize shallow geothermal energy,has been widely used in building HVAC heating in winter and cooling in summer.The work of the ground source heat pump air conditioning system mainly has two aspects:(1)in the heating process,the heat pump unit can be buried through the water circulation to absorb the heat of shallow water or soil,the heat obtained will be transferred to the indoor,so that the temperature can be lower in the winter heating;In the process of refrigeration,based on the use of the heat pump unit can achieve the heat treatment,that is,a certain absorption,and then rely on the process of water circulation can be transformed in the water or the earth,and can be through the extension coil tube to provide indoor 26℃ of cold air,refrigeration effect.When such systems are in operation,the heat transferred to the soil during cooling is often less than the heat taken from the soil during heating,which in the long run will result in soil heat loss and pose a potential hazard.This paper selects Tianjin to use existing ground source heat pump system as a cold and heat source to transform an existing factory building.Based on the use of equest software,it takes real-time simulation of the target building’s annual load and analyzes the ground source heat pump system to supply soil heat The shortcomings,comparative analysis of solar heating,electric heating two kinds of soil heating measures and the economics of directly using municipal heating.