微处理器和相关数字技术的快速发展，以及能源成本和可用性方面日益严重的危机，导致了精密自动化系统的发展，用于监测和控制设施的能源消耗。这种系统越来越多地采用分布式处理，包括强大的中央计算机站和远程微处理器网络。要设计此类系统以获得足够的性能和成本效益，需要仔细分析受控设施，并密切关注远程处理器的能力和功能。 本文讨论了其中涉及的一些设计问题:此类系统与受控设备的传感器/控制点的接口、远程处理器的特性，以及数据通信方案的选择。模型研究和安装系统的现场经验均给出了结果。硬件现在可用，通过正确选择点、算法和总体系统规格，可以适应几乎任何能源状况。在需要额外声学处理的系统中，使用声学内衬管道和配件已被视为有效的噪声控制手段。 这种广泛接受背后的原因是合乎逻辑的。除了控制风管系统噪声外，内衬风管和管件在初始系统设计期间，静压要求的增加最小，并在噪声控制的同时提供隔热。在整个管道系统中，可以使用内衬管道和配件来控制一次和二次噪声源，即风机噪声和气流产生的噪声。管道系统的声学设计既不像许多设计工程师认为的那样复杂，也不像他们认为的那样“神秘”，而使用适当的设计技术将提供一个没有噪音问题的系统，既经济又节能。 引文:研讨会，ASHRAE交易，第87卷，第一部分，伊利诺伊州芝加哥

The rapid evolution of microprocessors and associated digital technology, together with the growing crisis in energy cost and availability, has led to development of elaborate automated systems for monitoring and controlling energy consumption in facilities. Increasingly, such systems employ distributed processing involving a powerful central computer station and a network of remote microprocessors. The design of such systems for adequate performance and cost effectiveness requires careful analysis of the controlled facilities and close attention to the capabilities and functions of the remote processors.This paper addresses a number of design issues involved in: the interface of such a system to the sensor/control points of controlled equipment, the characteristics of the remote processors, and the choice of a data communications scheme. Results are presented from both modeling studies and field experience with installed systems. Hardware is now available which can be adapted to almost any energy situation with proper choices of points, algorithms, and overall system specifications.In those systems requiring additional acoustical treatment, the use of acoustically lined duct and fittings has been accepted as an effective and efficient means of noise control. The reasons behind this wide acceptance are logical. In addition to controlling the duct system noise, lined duct and fittings do so with a minimal increase in static pressure requirements over the initial system design, and provide thermal insulation along with the noise control.Lined duct and fittings can be used throughout a duct system for the control of both primary and secondary noise sources, i.e., fan noise and airflow-generated noise, respectively. The acoustical design of a duct system is neither as complicated or as "mystical" as many design engineers feel, and the use of proper design techniques will provide a system free from noise problems, that is both cost and energy efficient.