The second session of our 2022 Refrigeration Seminar will take place virtually on Tuesday, March 1st, 2022. Doug Reindl and Dan Dettmers will be presenting.

ASHRAE Standard 15: A Review and Update - Doug Reindl

Standard 15 (Safety Standard for Refrigeration Systems) is one of ASHRAE’s oldest standards dating back to 1919. The purpose of Standard 15 is to specify safe design, construction, installation, and operation of refrigeration systems. All engineers that work with building mechanical systems should have a basic understanding of this Standard and for those engineers that work closely with refrigeration or chilling systems must have a deeper understanding of this standard and its requirements. This presentation will provide a review of Standard 15 and highlight recent changes to the standard. Common misapplications of the standard will be presented and discussed.

Douglas Reindl is a professor of Mechanical Engineering at the University of Wisconsin-Madison. In addition, he is the founding director of the Industrial Refrigeration Consortium (IRC) at UW-Madison. Professor Reindl has taught at all levels: undergraduate, graduate, and continuing professional development.  Through the IRC, Professor Reindl works with some of the world’s leading food companies to improve the safety, efficiency, reliability and productivity of industrial refrigeration systems and technologies.  Reindl is an ASHRAE Fellow, a past recipient of ASHRAE’s Distinguished Service Award, and the first recipient of ASHRAE’s George C. Briley Award for the best refrigeration article in the ASHRAE Journal. He has served as a past chair and currently serves as a voting member of ASHRAE’s Standard 15 committee – Safety Standard for Refrigeration Systems. Reindl is a registered professional engineer in the State of Wisconsin.

Managing Moisture and Frost in Refrigerated Spaces - Dan Dettmers

Frost and condensation is the bane of refrigerated structures.  Ice sheets on refrigerated warehouse doors presents a hazard to humans and fork trucks, alike.  Frost falling from the rafters may look like pretty snow, until it covers product and the floor. Ice and snow building in a blast freezer can slow or halt production.  Condensation dripping from an ice arena renders the surface unplayable as upside down icicles grow from the sheet.  Regardless of the effect, humidity has no place in a refrigerated space.

In this session, Dan Dettmers will talk about some of the worst ice caves he has seen in over 20 years in the refrigeration industry and how they could have been avoided.  He will discuss techniques to prevent moisture intrusion, calculate the latent load and how to remove.  Since he works for a desiccant manufacturer, you can bet there information on the proper sizing of desiccant dehumidifiers for the application.

Dan Dettmers is a Sales/Application Engineer for Quest Climate, a manufacturer of humidity control systems, located in Madison, WI. Dan has worked in agriculture, food processing, pharmaceutical manufacturing, ice arena and industrial HVAC infrastructure for over 20 years.  Primarily focused on refrigerated facilities, Dan has extensive experience on preventing and dealing with frost and moisture both infiltrating into and generated within the facility. Within ASHRAE, Dan has chaired the technical committees dedicated to Ice Arenas, Refrigerated Warehouses, Refrigerated Food and Beverages and the ASHRAE Refrigeration committee.  Dan has also served on/chaired numerous standing committees, including the Handbook committee where he oversaw the Handbook of Refrigeration for two printing cycles. Since he doesn’t get enough cold time at work, Dan’s favorite hobbies include ice fishing and curling. Go ahead and ask, of course he knows a number of the Olympic curlers, but make sure you have enough time for all the stories that will follow.