论文总字数：19871字

摘 要

随着人类文明的不断进步,科学技术的快速发展,人们对生活环境、生活质量及舒适度要求越来越高，空气源热泵作为新型高效节能装置中的一种,近年來倍受国内、外消费者的青睐。

空气源热泵热水机组被广泛应用于家庭、宾馆等场所,它的基本工作原理是利用冷媒吸收空气中的热量,再通过压缩机压缩做功来对水加热,具有舒适、节能、环保等优点。

空气源热泵采暖系统是以环境为热源，从户外吸收低品位热能來为室内供热。一般经小型压缩机压缩后提升为45~50℃，即可用于中央采暖，或中央热水系统，集供冷、供热、生活热水于一体，一举三得。

在整个空气源热泵热水器设计计算过程中，热力计算是首要因素，它主要包括温差、传热系数和换热面积等的计算，这部分内容适合各种类的热泵系统。本系统的蒸发器采用直接蒸发式空气冷却器，冷凝器采用套管式.根据相关标准，需要确定其相关尺寸的零部件，计算出换热管数并进行布管。特别是在蒸发器排管时，上层管排顶部应预留一定的蒸发空间。

为了准确的知道空气源热泵热水器的相关尺寸，本论文中进行了大量的计算，得出与之相关的各种结果，并进行了正确的绘图，在本论文的绘图过程，因为一些数据的缺失，还查询了大量的资料。由本论文的图形可以知道设计的热泵热水器的零部件以及整体装配后的各种视图尺寸！

本论文对热泵热水器的研究以8匹循环式为主要研究对象。所以，在之后论文的数据计算中，会以8匹作为基础数据进行。

设计包含了技术说明和设计图纸。

关键词：空气源，蒸发器，套管式，冷凝器

The 8 horse circulating air source heat pump water heater

Abstract

When the human civilization and the rapid development of science and technology of the time, people have higher demands for living environment and quality of life. Air source heat pump as like a consumer model of high efficiency and energy saving device.

Air source heat pump water heaters are widely used in households, hotels and other places, it's basic working principle is to use the refrigerant absorbs heat from the air, and then compressed by the compressor to heat acting on the water, with a comfortable, energy-saving, environmental protection and so on.

Air source heat pump heating system based on the environment as a heat source, the absorption of low-grade heat from outdoor to indoor heating. Generally small compressor compression after upgrading to 45 ~ 50 ℃, can be used for central heating or hot water system, set the cooling, heating, domestic hot water in one threefold.

Air source heat pump water heaters throughout the process of design calculations, thermal calculation is the primary factor, which includes calculation of temperature, heat transfer coefficient and heat transfer area, etc., which is part of the heat pump system for a variety of classes. The evaporator system using direct evaporative air coolers, condensers using casing according to the relevant standards, need to determine the size of its associated components, calculate the number of tubes and piping. Especially when the evaporator pipes, the top row of the upper tube vapor space should be reserved for certain.

To know the exact size of the relevant air source heat pump water heater, this paper carried out a large number of calculations related to various results obtained with and make the correct drawing, missing in this paper drawing process because some data also check a lot of information. By the paper's graphic design heat pump

water heater can know the size of the overall view of the various components and assembled!

This paper studies the heat pump water heater to eight circulation as the main object of study. So, after calculating the data in the paper, it will be used as the basis to 8 data.

Design includes the technical specifications and design drawings.

Keywords: air source, evaporator, casing, condenser

目录

摘要................................................................................................................................................I

Summary II

第一章 绪论 1

1.1课题背景 1

1.2 空气源热泵热水器 1

1.3 空气源热泵热水器的工作原理 2

1.4 空气源热泵热水器国内外的发展情况 2

1.4.1 国外的发展状况 3

1.4.2 国内的发展状况 3

1.5 循环式空气源热泵热水器工作原理 3

1.6 空气源热泵技术的应用 4

1.7 空气源热泵的前景与展望 5

1.8 结语 6

第二章 8匹循环式空气源热泵热水器的设计计算 7

2.1热力计算的内容 7

2.2 压缩机的选取 7

2.3 蒸发器的计算步骤 7

2.4 冷凝器器的计算步骤 8

2.5 节流阀的选取 8

第三章 8匹循环式空气源热泵热水器的设计 9

3.1 任务要求 9

3.2原始参数 9

3.3 热泵热水器 9

3.4 压缩机选型 10

3.5 热泵系统热力状态参数 12

3.6蒸发器的设计 13

3.6.1蒸发器的结构参数 13

3.6.2蒸发器设计计算 14

3.7冷凝器的设计 22

3.7.1冷凝器的设计选型 22

3.7.2冷凝器的设计计算 23

结束语 27

参考文献 28

致谢...............................................................................................................................................30

第一章 绪论

1.1 课题背景

热泵理论起源于19世纪早期,热泵系统是通过消耗能量电能,把热量从低温热源(空气、水、土壤等)转移到高温热源中的一种技术^[1]。

随着人类文明的不断进步,科学技术的快速发展,人们对生活环境、生活质量及舒适度要求越来越高,再加上近年来房地产大型开发迅速,促使空调需求量呈直线上涨趋势。据估计,在我国总能源消耗的分布比例中,建筑能耗达30%以上,其中,空调能耗就占65%^[2]。空气源热泵作为新型高效节能装置中的一种,近年來倍受国内、外消费者的青睐。它利用环境空气为热源,可以说是取之不尽,用之不竭,无任何排放物,机组运行费用较低,产品热效率全年平均高达300%^[3]。

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