毕业论文__风冷热泵性能设计计算.doc

本 科 毕 业 设 计 计 算 说 明 书 题 目系 别专 业班 级学号学生姓名指导老师 2013 年 月 摘 要 风冷热泵型热水机组发展迅速，1996年比1995年增长近二倍。我国的能源政策和环境保护政策是促进热泵技术迅速发展的主要因素热泵空调系统在中国的应用迅速增长，目前家用空调器总量60%为热泵型甚至在较为寒冷的北京地区，有许多用户也喜欢在集中采暖期前后应用热泵型空调机组来采暖，冬季供应热水，夏季供应冷水的电动风冷机组在集中式空调系统中得到了广泛的应用，今后的应用将更为普及。 ABSTRACT Air-cooled heat pump hot water unit developed rapidly in 1996 than in 1995, an increase of nearly tripled. Chinas energy policy and environmental policy is to promote the rapid development of heat pump technology is a major factor in heat pump air conditioning system in China is rapidly growing, currently 60% of total household air-conditioner heat pump even in the colder regions of Beijing, there are many users Like the centralized heating period before and after the application of heat pump type air conditioning units for heating, hot water in winter, summer, supply of cold water in an electric air-cooled central air conditioning system has been widely used, future applications will be more popular. air conditioning system has been widely used, future applications will be more popular. The design for the air-cooled heat pump design, combined with the knowledge and practical engineering design information (economic and environmental benefits), requires optimization of process . The design details of the system and the system determines the program cycle thermodynamic calculation, sizing the compressor, condenser selection checking, evaporator selection, throttle bodies selection, economic analysis. KEY WORDS: heat pump; air; circulation 目 录 摘 要 I ABSTRACT II 目 录 III 1绪论 1 1.1 设计目的 1 1.2 设计要求： 1 1.2.1 设计具体要求 1 2设计任务、依据及方案 3 2.1 流程设计及热力计算 3 2.1.1 流程图设计 3 2.1.2 循环热力计算设计参数 3 2.2风冷热泵系统设备选型 4 2.2.1压缩机的选型计算 7 2.2.2冷凝器的设计校核 10 2.2.3蒸发器的选型计算 16 2.2.4节流机构选型计算 26 2.2.5四通换向阀的保温 27 2.2.6风机及配用电机的选型 28 2.2.7制冷剂充灌量 29 3辅助设备选型和经济性分析 30 3.1 辅助设备选型 30 3.1.1管路过滤系统 30 3.1.2气液分离器