摘要
土壤源热泵技术使用日益广泛,然而地埋管换热器循环水温的确定方法不一,且只给出一定的选择范围,据此得到的温度差异较大,对系统的设计与运行有较大影响。针对工程中常用的竖直埋管换热器的经验公式算法,在总结现有循环水温确定方法的基础上,提出了一种基于经济性的循环水温的选择确定方法。对于具体工程,通过对现有范围内不同水温下系统初投资及年运行费用的构成进行分析,计算并比较生命周期内系统费用的折现值,从而确定经济循环水温,并保证系统综合经济性最佳。
The ground-source heat pump technology is increasingly widely used,however,the methods for determining the temperature of the circulating water in the ground heat exchanger are varies,and only given a range of options.By these methods the temperature difference is big,and also has a large impact of the system on the design and operation.For the experience design and calculation methods of the vertical ground heat exchanger which is commonly used in engineering,on the basis of summarizing current circulating water temperature determination methods,this paper proposes a method to determine the selection of the temperature.This method is based on the economy of the system.For a specific project,through the analysis of the initial investment and annual operating cost of these systems which are designed by the existing temperatures in the range,also calculate and compare these systems' life cycle cost of discounted.Thereby the economic cycle temperature is uniquely determined,and also the integrated economy of the system is the best.
出处
《节能》
2015年第3期20-24,2,共5页
Energy Conservation
关键词
土壤源热泵
经济循环水温
初投资
年运行费用
折现值
ground-source heat pump
economic temperature of the circulating water
initial investment
annual operating costs
present value
