Zondits

Compressed Air, Industrial Technology

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

11 Oct , 2017  

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. […]

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Industrial Technology, Refrigeration

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

13 Apr , 2017  

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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Program Implementation, Programs & Policy

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

11 Apr , 2017  

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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Building Technology, Whole Building

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

21 Dec , 2016  

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 […]

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Building Technology, HVAC

Ask the Expert: Are Space Heaters Energy Suckers?

14 Dec , 2016  

Or Can I Keep Mine Plugged in at Work and Not Feel Guilty? Long Vu, ERS, for Zondits Answer: In terms of energy usage, space heaters use a similar amount of energy to heat up a space as central heating systems do. In fact, space heaters have higher efficiency since almost 100% of the fuel […]

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Compressed Air, Industrial Technology

Ask the Expert: Refrigerant & Regenerative Desiccant Compressed Air Dryers

4 Jan , 2016  

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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Building Technology, HVAC

Ask the Expert: When Does VRF Make Sense?

2 Jun , 2015  

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 […]

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Finance, Markets & Business

What are Yield Cos and What Do They Mean for Clean Energy?

5 Dec , 2014  

The “yield co” is a relatively new financial packaging tool that has interesting implications for renewables and energy efficiency. These publicly traded entities are formed around operating assets that they own in order to generate a predictable cash flow.

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Building Technology, Whole Building

Ask the Expert: Building Commissioning – Is It Really Worth It?

3 Nov , 2014  

As energy efficiency programs strive to transform the market with new technologies and systems, building commissioning remains one of the most ripe and undervalued opportunities. Commissioning and its various forms, which include re-commissioning, retro-commissioning, and continuous commissioning, ensure that the systems in a building are operating as efficiently as possible.

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Industrial Technology, Process

Ask the Expert: Are Pressure Independent Valves Worth the Hype?

10 Oct , 2014  

The pressure independent valves can provide real savings in systems that have the low delta T syndrome, which seems to affect a lot of campus style centralized chilled water/hot water systems. The low delta T situation is mostly encountered during part load conditions and is manifested in excessive pumping.

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