Demand-controlled ventilation (DCV) is an energy-saving control strategy that reduces the rate at which outdoor air is delivered to a zone during periods of partial occupancy. This ENL will discuss various technologies used to implement DCV, how to apply DCV control strategies to the different types of ventilation systems, and review the related requirements for compliance with ASHRAE Standards 62.1 and 90.1. Presenters:  Eric Sturm and John Murphy After attending, you will be able to: Recognize applications for which ASHRAE…

Recent innovations provide several options to consider for controls in smaller buildings. This ENL will review different packaged rooftop system configurations (single-zone constant-volume, single-zone VAV, changeover bypass, changeover VAV, and multiple-zone VAV with terminal heat) and discuss the advantages and limitations of technology options available to control each system. Finally, we will demonstrate how to specify the controls to best meet the needs of the client. After attending, you will be able to: Understand HVAC-related needs of typical small building…

The 2016 version of ASHRAE Standard 90.1 requires chilled-water cooling coils be selected for at least a 15 degree delta T. This ENL demonstrates the process for selecting coils and control valves to meet this new requirement, illustrates coil configuration impact on part-load performance, and discusses the impact on chiller plant design and operation. Register Now  

This programs reviews air- and waterside economizing advantages, drawbacks and considerations when using one versus the other. ASHRAE Standards 90.1 requirements and exceptions will also be discussed. Register Now

This program will educate attendees on the basics of demand charges and time-of-use rates and their impact on energy conservation and cost savings. Various operational and equipment strategies and energy resources that can help your building respond quickly to the changing energy market. Register Now

​​Dedicated outdoor-air systems (DOAS) are used in a variety of building types to provide ventilation; and when the outdoor air is dehumidified, a DOAS can help prevent high space humidity levels. But many of the systems designed and installed today are not dehumidifying adequately. This ENL will demonstrate how space humidity levels are affected by the DOAS discharge-air conditions, at both full load and part load.   Register Now  

Growing plants indoors has gained in popularity, but conditioning spaces for plants instead of humans introduces new challenges. This ENL will discuss plants, the dehumidification challenges they pose, and how precision cooling for indoor agriculture is different compared to comfort cooling. The ENL will also discuss common air- and waterside system configurations used to maintain space conditions to ensure a healthy crop.   Register Now   

Many municipalities throughout the United States are taking action to reduce their carbon emissions. One of the tactics they are using that effects the HVAC industry is the reduction, or removal, of natural gas for heating. This means our Industry will face the challenge of heating our buildings with electric heat. This ENL will cover the motivation to electrify, areas currently effected by this trend, and potential systems to meet electrification needs.    Register Now