空调及冷热源实验系统设计-原理方案——毕业设计_精品.doc

空调及冷热源实验系统设计-原理方案 摘要 本设计为学校实验室设计中央空调方案，拟订一个合理的中央空调系统,为室内学生和指导老师提供舒适的工作环境；同时阐述中央空调的工作原理，让学生从理性上认识中央空调，为学生从事智能化楼宇设计提供理论知识和参考方案。 本设计的内容包括：简单的中央空调系统方案；中央空调原理阐述；冷热源的方案分析；PLC控制方式中央空调的原理与方案；PLC与PC机集成的方案等。 设计方法是通过收集图书馆资料了解暖通空调的原理，学习一些特定的空调知识和参考原理图设计本方案的各类原理图，通过学习PLC一些知识了解PLC控制中央空调的知识和PLC与个人计算机通讯知识来编写控制方案和集成方案。 本设计依据有关规范考虑节能和舒适性要求，所以本设计方案采用变风量系统。 关键字：实验室，中央空调，原理方案，PLC，冷热源 Abstract The graduation project designs a central air conditioning system for the school laboratory, so as to create a comfortable work environment for the stuff. It includes: a simple central air-conditioning system; principle on the central air-conditioning, hot and cold so urce of the programmer; PLC control of the central air-conditioning principles and programmers; PLC and PC integrated programmers. The design Introduces air-conditioning system through collecting Information at library. It designs many schematics through learning knowledge of central air-conditioning system. Moreover, it Includes and a Control programmer which is designed by learning air conditioning system knowledge of PLC .It also contains knowledge that how to create an communication between computer and PLC so as to develop an integrated solution. According to some correlation standard, allow for energy safe and indoor comfort, the air condition system of the design is a Variable Air Volume (VAV) system. Keyword: Laboratory, Central air conditioning, the principle of the programmer, PLC, Cold and heat source 目录 1 绪论……………………………………………………………………………. 1 1.1题目背景及意义……………………………………………………………1 1.2国内外空调状况............................................................................................ 1 1.2.1美国中央空调发展现状……………………………………………..1 1.2.2日本中央空调发展现状……………………………………………. 2 1.2.3中国中央空调现状…………………………………………………..3 1.3中国中央空调发展趋势…………………………………………………… 3 1.4研究方法…………………………………………………………………… 4 1.5论文构成及内容…………………………………………………………… 5 2 空调原理分析………………………………………………………………….. 6 2.1 空气调节原理…