Teaching Approved Methods of Tuning and Adjusting Heating, Ventilating, and Air Conditioning Control Systems

供暖、通风和空调（HVAC）行业目前正在努力解决影响其对建筑物的所有者和居住者的可信度的问题：安装、翻新和维护的建筑物HVAC系统不满足所有者、居住者和其他最终用户的操作期望的条件、舒适性和经济性。如HVAC和建筑行业期刊中关注的文章和信件所证明的，建筑机械系统所有者、设计者、安装者和居住者代表需要一种普遍理解的、科学的现场测试HVAC系统控制性能的方法，该方法可以更容易地确定与期望和指定操作的符合性。 美国国家科学基金会先前向辛克莱社区学院（DUE 9544183）提供的赠款赞助了一次由全国高校代表、暖通空调行业专业人士和暖通空调设备制造商参加的研讨会。在研讨会上，它表明，控制系统的性能可以通过控制器响应的硬拷贝记录进行分析。这种教科书描述的分析方法代替了视觉监控的非科学实践，或用于观察和纠正控制器行为的模糊“自调整”程序。作为研讨会要求的结果，Sinclair教师正在开发一个课程模块，教授如何利用手持图形计算器来取代脆弱，昂贵，先进的实验室测试设备，在研讨会上使用，以展示基于教科书控制理论的控制器行为分析方法。该课程模块用于辛克莱社区学院现有的HVAC控制课程，并可用于机械工程技术的其他副学士和学士学位课程。开发的所有材料和技术都通过工程教育专业协会传播。最终报告作为提交给ASHRAE、IEEE、ASEE和伊萨等专业协会大会的技术论文的基础。课程的开发是与代顿大学的教师、专业咨询小组和国家先进制造教育卓越中心的课程开发人员合作完成的。管理该开发项目的辛克莱学院研究人员在设计和安装主要的商业HVAC控制系统方面拥有多年的经验。此外，这些材料可以在全国范围内立即用于两年制学院为当地工业雇员提供的继续教育课程。凭借辛克莱与代顿大学、迈阿密米德尔敦大学、辛辛那提大学应用科学学院、托莱多大学和费里斯大学等四年制学院达成的衔接协议和工作安排，开发的材料正在被用于许多工程和技术项目。州立大学。

The Heating, Ventilating, and Air Conditioning (HVAC) industry is presently struggling with a problem that affects its credibility with owners and occupants of buildings: installed, renovated, and maintained building HVAC systems are not meeting the conditions, comfort, and economy of operation expectations of owners, occupants and other end users. As evidenced by articles and letters of concern in HVAC and building trade periodicals, building mechanical system owners, designers, installers, and occupant representatives need a commonly understood, scientific means of field testing HVAC system control performance which can more readily determine compliance with desired and specified operation. A previous NSF grant to the Sinclair Community College (DUE 9544183) sponsored a symposium attended by national representatives of colleges and universities, HVAC industry professionals, and HVAC equipment manufacturers. At the symposium it was demonstrated that control systems performance could be analyzed through hard copy recordings of controller responses. This textbook-described method of analysis was in lieu of the non-scientific practice of visual monitoring, or vague "self tuning" programs used for observing and correcting controller behavior.As the result of a request at the symposium, Sinclair faculty is developing a curriculum module to teach the utilization of a hand-held graphing calculator to be substituted for the fragile, expensive, sophisticated laboratory test equipment that was used at the symposium to demonstrate the method of controller behavior analysis based on textbook control theory. The curriculum module is used in existing HVAC control courses at Sinclair Community College and is available to other Associate and Bachelor degree programs in mechanical engineering technology. All materials and technology developed are disseminated through engineering education professional associations. The final report serves as the basis of technical papers presented to general meetings of such professional societies as ASHRAE, IEEE, ASEE, and ISA.Development of curriculum is accomplished in cooperation with faculty from the University of Dayton, a professional advisory panel, and curriculum developers at the National Center of Excellence for Advanced Manufacturing Education. The Sinclair faculty researchers administering this development project have years of experience in designing and installing major commercial HVAC control systems. In addition, such material can find ready use nationally in continuing-education courses offered by two-year colleges to employees of local industry. With the articulation agreements and working arrangements that Sinclair has with such four-year colleges as the University of Dayton, Miami University of Middletown, University of Cincinnati College of Applied Science, University of Toledo, and Ferris State University, the developed material is being used in many engineering and technical programs.