Description

Track: Fundamentals and Applications
Sponsor: 5.11 Humidifying Equipment, 5.7 Evaporative Cooling
Chair: Raul Simonetti, Member, Carel Industries SpA, Brugine, Italy

Recent research shows that a proper level of humidity significantly reduces the risk of airborne infections. Humidity control solutions offer significant health benefits for occupants, especially when it is designed, installed and commissioned correctly. This seminar, after recalling the results of the research, presents some of the currently available humidification solutions along with their main characteristics and best practices.

1. 40 Is the New 20: Balanced Indoor Air-Hydration for Health!
Stephanie Taylor, M.D., Member, Healthcare Acquired Infections Organization, Boston, MA
Today, indoor humidification is used in commercial buildings to protect materials and aid in manufacturing processes, however, data tells us that proper air-hydration is also essential for the health of people. Short term dehydration symptoms such as a dry mouth prompt us to drink fluids when we feel thirsty. Conversely, chronic dehydration resulting from water evaporation through our skin and respiratory tissues in dry air is unperceivable, yet causes serious problems for our blood circulation, thinking ability and resistance to infections and allergies. This presentation discusses exciting new and existing data to show the health benefits of proper indoor-air humidification.

2. Getting Humidity Control Right
Nicholas Lea, P.Eng., Associate Member, Nortec Humidity Ltd., A Member of the Condair Group, Ottawa, ON, Canada
With the vast quantity of research demonstrating how to keep buildings and materials dry it may seem counter intuitive to add water to the indoor environment. However recent research has shown clear health benefits from maintaining mid-range humidity levels. This presentation dispels the myths associated with humidification and discusses crucial elements for a safe and successful design. Learn about where humidity is needed, controlling risks of condensation and avoiding bacterial contamination. The seminar concludes with practical design tips.

3. VAV with IAQ and a Cure for the Spread of the Airborne Flu Virus
Thomas Weaver, P.E., Member, CMSI Headquarters, Hercules, CA
Supplying dry winter outdoor air to a room decreases its relative humidity (RH). Recent research shows that when room RH drops below 40 %, the droplet nuclei containing the pathogens stay buoyant in the human breathing zone longer, with increased risk for susceptible humans. Overhead VAV air systems remain the most popular HVAC cooling design for schools and office buildings in California. The use of a Heat-Recovery Economizer and an adiabatic Direct Evaporative Cooler/Humidifier offers a remedy. This all-outdoor-air design offers the building owner significant cooling and heating energy savings while furnishing all outdoor air for better Indoor Air Quality.

4. Steam Humidification: Main Systems and Characteristics
Raul Simonetti, Member, Carel Industries SpA, Brugine, Italy
Steam humidifiers can be used as alternative to evaporative-cooling equipment in many applications, or must be used instead of evaporative-cooling systems for dedicated purposes (e.g., surgery theatres, cheese maturing). This seminar presents the most common steam humidifiers describing their performances, supply-water constraints, as well as hygiene and maintenance requirements.

Presented: Sunday, January 21, 2018, 1:30-3:00 PM
Run Time: 90 min.

This is a zip file that consists of PowerPoint slides synchronized with the audio-recording of the speaker (recorded presentation), PDF files of the slides, and audio only (mp3) for each presentation.

Citation: ASHRAE Seminar Recordings, 2018 Winter Conference, Chicago, IL

Product Details

Published:

2018

Units of Measure:

Dual

File Size:

1 file , 100 MB

Product Code(s):

D-CH18Sem13