actuation technologies Ask the Expert compressed air dryers CO2 refrigeration

Ask the Expert: Pneumatic or Electric Actuation: Which is Better?

Compressed Air and Actuation Technologies Bryan Kilgore, ERS, for Zondits Pneumatic actuators have had widespread use in the industrial space, particularly the food packaging industry. Pneumatic actuators offer low upfront costs for mechanical actuation. Electric actuators, however, are more energy efficient and are often seen as the more economical option when considering long-term energy costs. […]

actuation technologies Ask the Expert compressed air dryers CO2 refrigeration

Ask the Expert: Is a CO2 Refrigeration System a Good Option?

Question: When is a CO2 Refrigeration System a Good Option for a Supermarket/Convenience Store? Bryan Kilgore, ERS, for Zondits The cost margins for retail food stores are razor thin, so when does upgrading or replacing an old refrigeration system with a new CO2 system make sense? Will the system be efficient, reliable, safe, and cost-effective? Answer: […]

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Ask the Expert: Measures, Rebates, and Really Fast Paybacks

Question: What energy efficiency measures often have the shortest payback, including potential rebates? Valerie Eacret, ERS, for Zondits Answer: Here are a few measures with quick paybacks from projects recently crossing our desks: Compressed air setpoint – Frequently we find that the pressure in compressed air systems is set much higher than necessary. While extensive […]

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Ask the Expert: What’s the Difference Between Net-Zero and Carbon-Neutral?

Ask the Expert: What’s the difference between “net-zero” and “carbon-neutral” in relation to buildings and efficiency? Ryan Pollin, ERS, for Zondits There are many different but nearly synonymous terms for buildings, campuses, and communities going in the general direction of net zero. Per the Department of Energy, the best term is a zero energy building (ZEB). This is […]

actuation technologies Ask the Expert compressed air dryers CO2 refrigeration

Ask the Expert: Refrigerant & Regenerative Desiccant Compressed Air Dryers

What is the difference between refrigerant-type compressed air dryers and regenerative desiccant-type compressed air dryers? What are the advantages and disadvantages of one over the other? Karamvir Singh for Zondits, January 4, 2016 Answer: Let’s start by answering why you even need to dry the compressed air. The atmospheric air contains water vapor that begins […]

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Ask the Expert: When Does VRF Make Sense? Part II

Technical Information on Variable Refrigerant Flow Systems Adam Allington and Chris Zimbelman for Zondits, December 17, 2015 Answer: A few months ago we asked the question when does VRF make sense? In short, the answer was that these systems are ideal in buildings with different rooms or zones that have varying occupancy schedules, activities, and temperature […]

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Ask the Expert: When Does VRF Make Sense?

When Does a Variable Refrigerant Flow System Make Sense? Chris Zimbelman and Adam Allington for Zondits, June 2, 2015 In order to understand what the best applications are for variable refrigerant flow (VRF) systems, we should back up and discuss their operation and benefits first. VRF systems are a sophisticated type of air-source (or occasionally […]