I 摘要 随着我国经济的不断发张，人民生活水平的不断提高，城市产生的生活污水 量也在不断增加。我国近将几年大力发展城市污水处理厂规模，预期到 2015 年 末，全国设市城市的污水处理率将达到 85%，较 2010 年末的 77.5%增加 7.5 个 百分点；对应的新增污水处理能力约为 4569 万立方米每日，届时全国污水处理 能力将达到 20805 万立方米每日。污水厂出水量大，水资源集中，水质较好，这 就为污水源热泵空调的应用创造了良好的条件。大力开发城市污水处理厂二级出 水，建设污水源热泵空调系统不仅能够集中高效地利用污水中宝贵的冷热资源， 还能为企业为社会带来巨大的经济、环保效益。 本文结合西安市某污水处理厂建设污水源热泵系统项目，综合分析了设立污 水源热泵系统向周边区域供暖供冷的可行性。通过 DeST 软件模拟了三种类型建 筑的逐时动态负荷变化，结合模拟结果与污水的温度、流量等数据，探讨了污水 的供热供冷能力；并讨论了设立蓄水池的问题以及输送系统的能耗和输送距离的 问题。 分析过程中，确定了冬季最不利日，这天的系统负荷较大且污水流量较小； 分两种情况讨论，即不设蓄水池和设立蓄水池，结合相关数据分析后得出结论： 只有设立蓄水池，热泵系统从污水中提取的热量才能随时满足系统的负荷需求。 设立蓄水池后，可以充分利用污水资源，最不利时段的最大连续缺水量总和即为 蓄水池设计容量。针对污水源热泵系统的小温差，大流量特点，讨论了输送距离 对输送能耗的影响，并建立了相关模型；根据系统经济比摩阻给出了污水源热泵 最大经济输送距离的判断计算式，为实际工程方案的经济可行性提供了理论依据。 关键词：污水源热泵，供热能力，蓄水池，输送距离长安大学硕士学位报告 II Abstract As China's economy continues to develop, the continuous improvement of people's living standards, and the amount of sewage produced by the city life is also increasing. China will develop scale municipal wastewater treatment plantin recent years. To the coming of 2015, Chinas national domestic sewage treatment rate will reach 85 percent, compared with 77.5% at the end of 2010, an increase of 7.5 percentage points; the corresponding new sewage processing capacity of about 45.69 million cubic meters per day,then the national sewage treatment capacity will reach 208.05 million cubic meters a day. The fact that water from the sewage treatment plant has several apparent merits, including larger water flux, higher water source concentration and better water quality has created good conditions for the application of urban sewage source heat pump. Urban secondary effluent from sewage treatment plants should be developed vigorously to build more urban sewage source heat pump systems, which not only exploits effectively valuable cooling and heating resource in sewage, but also brings enormous economic, environmental benefits for the enterprise and the community. In this paper,The sewage treatment plant construction project water source heat pump system, and the establishment of a comprehensive analysis of sewage source heat pump heating system to the surrounding area of the feasibility of cooling. Use the DeST software to simulate the dynamic load changes by three types of construction, and combined with simulation results and wastewater temperature, flow and other data, discussed the heating and cooling capacity of sewage; and solve the problem of the establishment of the reservoir and discuss the system energy and transport issues distances. In the process of analysis,determined the most unfavorable day in winter. In this day the sewage flow is small and the system load is large,make two cases discussed, that no reservoir and the establishment of the reservoir, only the establishment of the reservoir, heat pump system extracts heat from sewage to meet the load requirements of the system at any time. AfterIII the establishment of the reservoir, you can take advantage of water resources, the paper concluded after analyzing: The maximum amount of continuous dry period is the sum of the most unfavorable design capacity of the reservoir.For the design feature of small temperature difference and large flux, we discuss the influence on energy consumption caused by distance of transporting and establish the related model;Under the condition of the economic specific friction resistance, the judge computing formula for the biggest economic transporting distance of sewage heat pump system is shown in this paper, which provides the judging basis for the economical feasibility of actual engineering. Key words: Sewage source heat pump; The heating capacity; water storge pool; transporting distance长安大学硕士学位报告 IV 摘要.................................................................................................................................I Abstract ..........................................................................................................................II 第 1 章 绪论 .................................................................................................................1 1.1 课题背景 ........................................................................................................1 1.2 污水源热泵的特点 ........................................................................................2 1.3 项目概况 ........................................................................................................3 1.4 项目建设的必要性 ........................................................................................4 1.5 课题主要研究内容 ........................................................................................5 第 2 章 利用 DeST 软件对几种建筑进行全年负荷动态模拟...................................6 2.1 西安市某宾馆建筑基本概况 ........................................................................6 2.1.1 概述 .....................................................................................................6 2.1.2 围护结构基本构造 .............................................................................7 2.1.3 室内设计参数： .................................................................................8 2.2 西安市某住宅建筑基本概况 ........................................................................9 2.2.1 概述 .....................................................................................................9 2.2.2 围护结构基本构造 ...........................................................................10 2.2.3 室内设计参数 ...................................................................................11 2.3 西安市某办公建筑基本概况 ......................................................................11 2.3.1 概述 ...................................................................................................11 2.3.2 围护结构基本构造 ...........................................................................12 2.3.3 室内计算参数 ...................................................................................13 2.4 负荷计算方法选择 ......................................................................................13 2.5 DeST 动态负荷软件 ......................................................................................13 2.5.1 软件简介 ...........................................................................................14 2.5.2 建立建筑模型 ...................................................................................14 2.5.3 设定计算参数 ...................................................................................17 2.5.4 设置通风 ...........................................................................................17 2.5.5 室外气象参数 ...................................................................................18目录 V 2.6 DeST 模拟结果 ..............................................................................................19 2.6.1 西安市某宾馆 ...................................................................................19 2.6.2 西安市某住宅楼 ...............................................................................21 2.6.3 西安市某办公楼 ...............................................................................22 2.7 本章小结 ......................................................................................................25 第 3