制冷产品能效试验台的研制及实验研究

VIP免费
3.0 陈辉 2024-11-19 6 4 4.23MB 80 页 15积分
侵权投诉
摘 要
环境试验装置是试验室内用人工方法模拟一种或者多种被试产品工作环境的
装置，而不需将产品送入通常难以达到的工作环境，用于产品性能检测或产品研
发，当今社会已经广泛应用。
本文依据国家标准 GB/T8059.2-95、GB/T7725-2004 和安徽省质检中心协议要
求，设计并建造了一套全自动电冰箱热工性能测试的实验系统和用于空调热工性
能测试的试验室。主要工作包括：环境试验室空气处理系统设计、自动控制系统
设计、电气系统设计、软件编写及成功地进行了调试冰箱空调热工性能测试项目
的实验。
在室外侧部分，使用两套制冷机组对空气进行冷却处理，再通过离心式风机
实现空气气流循环。在空气循环过程中以电加热器和电加湿器作为调节手段，使
实验室环境工况参数达到要求的指标。并在制冷系统中采用了热气旁通的方法，
减小了环境室加热量和加湿量，提高了整个系统的节能性。
在室内侧部分，通过对送风方式的分析并结合实际情况，采用离心式风机实
现空气气流循环。环境室采用全孔板送风，并设置送风、回风静压室以保证送风
均匀。在试验区域实现了风向平行于空调开放平面的要求。
在测控方面，进行了空调系统数据采样软件设计和基于 PID 技术的空气处理
过程控制软件的设计，提高了空气处理系统工况响应速度，使最极限工况达到稳
定的时间由国家标准规定的 1.5 小时缩短到 1小时，在国内处于先进水平。在冰
箱测试试验时其温度测量及其控制精度分别达到±0.1℃和±0.2℃，相对湿度测
量及其控制精度分别为±3%和±4%。
测试软件基于 Delphi 平台，并运用了面向对象编程方法，同时采用多线程、
ADO 等多项技术。测试软件和控制系统的良好结合实现了过程监控与数据采集处理
的自动化。数据采集系统控制软件，可实现对所有数据采样点的实时监控和打印，
输出试验数据报表。
最后通过现场调试与试验项目的运行得到的数据符合技术标准，该套系统已
经在用户质检中心顺利投入使用，并产生了良好的经济效益和社会效益。
关键词： 电冰箱 空调 能效测试 空气处理 自动控制
ABSTRACT
Indoor environmental testing equipment to test the simulation with artificial
products were tested in one or more devices work environment, without the product into
the work environment is usually difficult to achieve, for product performance testing or
product development, today's society has been widely application.
This article based on national standards GB/T8059.2-95, GB/T7725-2004 and
Anhui agreement calls for quality inspection center, designed and built a fully automatic
refrigerator Experimental thermal performance test systems and thermal performance
for air conditioning testing laboratory. Main activities include: environmental test room
air handling system design, automatic control system, electrical system design, software
development and debug successfully carried out the refrigerator thermal performance
test air-conditioning project experiment.
In the outer part of the room, use two sets of air cooled chiller then processed
through the centrifugal fan to achieve the air flow circulation. In the process of air
circulation to electric heaters and electric humidifier as a means of regulation, the
laboratory environment working parameters to meet the requirements of the target. And
used in the refrigeration system, hot gas bypass method, reduces the heat and humidity
environment increases the amount of room to improve the energy efficiency of the
system.
In the interior side of the part of the way through the air and with the actual
situation, the use of centrifugal fans to achieve air flow circulation. Room air
environment, all-orifice, and set the air supply, return air static pressure chamber to
ensure uniform air supply. Wind direction in the test area to achieve a plane parallel to
the open air requirements.
Measurement and control, the air conditioning system carried out the data
acquisition software design and technology-based PID control of the air-handling
software design process to improve the condition of air handling system response speed,
so that the most extreme conditions to stabilize the time by the national standard of 1.5
hours to 1 hour, at the advanced level in the country. Test test in the refrigerator the
temperature measurement and control accuracy ± 0.3 ℃, respectively, and ± 0.4 ℃,
relative humidity measurement and control accuracy of ± 3%, respectively, and ± 4%.
Test software platform based on Delphi, and the use of object-oriented
programming, and multi-threading, ADO and many other technologies. Test software
and control systems to achieve a good combination of process control and data
acquisition and processing automation. Data acquisition system control software, can
realize all the data sampling points on real-time monitoring and printing, the output test
data reports. Finally, on-site commissioning and a full set of pilot projects were also
quite successful, of the system has been successfully put into use Anhui quality
inspection center, and generate a positive economic and social benefits.
Key Word: refrigerator, air-conditioning, Energy efficiency testing, air treatment,
automatic control
目录
摘 要
ABSTRACT
第一章 绪论.....................................................................................................................1
§1.1 制冷产品性能测试技术的意义与现状 ·········································· 1
§1.1.1 制冷产品能效测试技术的意义 ··········································· 1
§1.1.2 制冷产品性能测试试验台发展现状 ·····································2
§1.2 课题来源及主要工作 ······························································· 3
§1.2.1 课题来源 ······································································ 3
§1.2.2 技术要求 ······································································ 3
§1.2.3 研究的主要内容及实施方案 ··············································4
第二章 环境室空气处理系统设计................................................................................6
§2.1 试验室库房设计 ····································································6
§2.1.1 库房的几何参数确定 ························································6
§2.1.2 库房的热流量计算 ·························································· 7
§2.2 气流组织设计 ········································································ 8
§2.2.1 气流组织方式 ································································ 8
§2.2.2 孔板送风计算 ································································ 9
§2.3 循环风机的选型 ···································································· 11
§2.3.1 风压计算 ····································································· 11
§2.3.2 风机选型 ·····································································12
§2.4 制冷系统的设计 ····································································13
§2.4.1 制冷机组的整体设计 ····················································· 13
§2.4.2 制冷机组设计 ······························································ 14
§2.4.3 冷凝器设计 ·································································· 15
§2.5 热湿设备设计 ·······································································17
§2.5.1 电加热器设计 ······························································ 17
§2.5.2 电加湿器的设计 ··························································· 18
§2.6 热力膨胀阀选型 ····································································19
§2.7 空气取样及温湿度测量装置的设计 ··········································· 20
§2.7.1 装置的总体设计 ···························································· 20
§2.7.2 取样风机的选择 ···························································· 21
§2.8 空气处理系统节能设计 ··························································· 21
第三章 自动控制系统与测试系统.............................................................................23
§3.1 自动控制系统的设计 ······························································ 23
§3.1.1 控制方法 ········································································23
§3.1.2 PID 控制 ····································································24
§3.1.3 执行机构与调节机构 ····················································27
§3.1.4 SISO 闭环控制回路 ······················································ 27
§3.2 测控系统硬件组成 ··································································· 29
§ 3.2.1 概 述 ········································································29
§ 3.2.2 测控系统的硬件组成 ····················································29
§ 3.3 软件介绍 ··········································································· 30
§3.3.1 主界面介绍 ·································································· 31
§3.3.2 软件方案 ·····································································32
§3.4 数据库技术实现 ·································································· 33
第四章 室外侧环境室的试验研究...............................................................................34
§4.1 实验方案 ············································································· 34
§4.2 测点布置 ············································································· 35
§4.3 实验结果及分析 ····································································37
§4.3.1 制冷工况 ····································································· 37
§4.3.2 制热工况 ····································································· 43
§4.4 小结 ··················································································· 49
第五章 室外侧环境室的 Ansys 模拟分析...................................................................50
§5.1 模拟的说明 ·········································································· 50
§5.2 室外侧环境室的物理模型简介 ··················································51
§5.3 Fluent 模拟用数学模型的建立 ··············································· 52
§5.3.1 网格划分 ····································································· 52
§5.3.2 边界条件类型的指定 ······················································ 55
§5.4 Fluent 模拟三维速度场 ························································ 55
§5.4.1 Fluent 参数设置 ···························································55
§5.4.2 Fluent 计算过程 ·························································· 57
§5.4.3 模拟结果及分析 ···························································· 57
§5.5 Fluent 模拟三维温度场 ························································ 61
§5.5.1 Fluent 参数设置 ···························································61
§5.5.2 Fluent 计算过程 ·························································· 62
§5.5.3 模拟结果及分析 ···························································· 62
§5.6 数值模拟结论 ·······································································66
第六章 结论与展望.......................................................................................................67
§6.1 研究内容与总结 ····································································67
§6.2 展望 ··················································································· 68
主要符号表.....................................................................................................................69
参考文献.........................................................................................................................71
在读期间公开发表的论文和承担科研项目及取得成果.............................................75
致谢.................................................................................................................................76
摘要：

摘要环境试验装置是试验室内用人工方法模拟一种或者多种被试产品工作环境的装置，而不需将产品送入通常难以达到的工作环境，用于产品性能检测或产品研发，当今社会已经广泛应用。本文依据国家标准GB/T8059.2-95、GB/T7725-2004和安徽省质检中心协议要求，设计并建造了一套全自动电冰箱热工性能测试的实验系统和用于空调热工性能测试的试验室。主要工作包括：环境试验室空气处理系统设计、自动控制系统设计、电气系统设计、软件编写及成功地进行了调试冰箱空调热工性能测试项目的实验。在室外侧部分，使用两套制冷机组对空气进行冷却处理，再通过离心式风机实现空气气流循环。在空气循环过程中以电加热器和电加湿器作为...

展开>> 收起<<
制冷产品能效试验台的研制及实验研究.pdf

共80页,预览8页

还剩页未读， 继续阅读

相关推荐

更多
立即下载
作者：陈辉 分类：高等教育资料 价格：15积分 属性：80 页 大小：4.23MB 格式：PDF 时间：2024-11-19

开通VIP享超值会员特权

  • 多端同步记录
  • 高速下载文档
  • 免费文档工具
  • 分享文档赚钱
  • 每日登录抽奖
  • 优质衍生服务

作者详情

相关内容

更多

推荐作者

热门标签

/ 80
评分 收藏
分享
立即下载 VIP免费下载
客服
关注