| This paper starts with the current energy and environmental situation in China.Considering the drawbacks of coal-fired boiler heating,based on recent national coal to electricity related policies,combined with the characteristics of natural conditions,the northern town school location features and the building features,two kinds of energy saving and environmental friendly heating methods are put forward,which are electric heat storage heating and heat pump heating.Using DeST modeled a primary school teaching building,located in Liaoning District of Shenyang City.According to the characteristics of the teaching building,different indoor temperature is set in different time periods to simulate the heat load of the teaching building in the whole heating season.The energy conversion efficiency and alternative potential of electrical energy are analyzed,and the electric energy has a broad prospect of development.Make theoretical analysis of heat pump heating and electric heat storage heating.According to the principles and characteristics of different types of heat pumps,it is concluded that the ground source heat pump system is relatively suitable for urban schools in Shenyang.In many forms of electric heating,the regenerative electric heating has many advantages and has a good development prospect.Therefore,from the four aspects of electricity consumption,operation cost,initial investment and practicability,the two heating modes are compared and analyzed.It is concluded that the electric heat storage heating mode has more advantages in practicality and economy.And the full use of low valley electricity,to balance the load of the power grid,to promote the power grid "peeling and filling the valley" has a very good role.In view of the heat storage technology,the heat storage technology is widely used and various.This paper is to use the good performance of phase change thermal storage materials to heat storage and heating.Finally,the energy consumption and operation cost of the two heating modes are analyzed.The most important feature of the electric heat storage heating method is that it can make full use of cheap low valley electricity and convert the electric energy into heat energy storage.According to the difference of the number of heat storage devices when the electric heating is heated,it is divided into three schemes to analyze.According to the matching of heat storage capacity and heat load,the energy consumption of these three kinds of situations in the valley electric period,peak time,peak power period,and the cost of operation,three schemes of the peak electricity load transfer.The soil source heat pump system has no heat storage function,so the power consumption of time,peak time and valley electric power consumption in peak hours are similar.With the decrease of soil temperature,the COP of the ground source heat pump will decrease,and the energy consumption and operating cost will increase.Through the overall comparison of the two heating methods,the related analysis is carried out. |
