EES Maximizes Efficiency in Water-Cooled VRF Equipment

Posted by Daniel F Luna, P. E. on Sep 7, 2023 12:51:08 PM

How Optimizing Variable Refrigerant Flow Cooling Systems can Save Building Managers on Energy Usage

EES is very active with several Variable Refrigerant Flow, VRF, cooling systems’ manufacturers. In this article the condenser-water optimization on Samsung equipment will be discussed.

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Topics: energy control systems, VRF, dan luna, HVAC, technology

Fun in the Sun with the EES Team

Posted by EES on Jul 27, 2023 3:19:40 PM

As in years past, the employees of EES, along with their families and friends, descended upon the home of Dan & Christina Luna for an afternoon of food, fun, sunshine, and swimming. There were several families’ young children, all of whom ended up riding on the “inflate-a-bull”.

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Topics: pat miller, Pete Moskal, Bruce Marson, dan luna, employees

Making Cooling Tower Control More Reliable and Efficient

Posted by Daniel F Luna, P. E. on Jul 11, 2023 5:40:58 PM

Continuing where we left off with optimizing chilled water flow, this article is taking a look at cooling tower control for the same large shopping mall in the DC area. When EES showed up for the first time on site at the chiller/tower plant, the tower control was terrible. The control was “tuned” by the client’s local HVAC tech, and it went from off, to 90%, to off, every few minutes.

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Topics: control systems, dan luna, technology, open-loop controls

Optimizing Chilled Water Flow Saves Money

Posted by Daniel F Luna, P. E. on May 26, 2023 2:18:18 PM

As part of an overall optimization and takeback of a commercial mall in Virginia, EES engineers, step by step, enhanced systems to make a chilled-water plant more efficient. This article is about optimizing the chilled water pumping and pressure loops. In future articles, we’ll dig into condenser water loops and the overall plant optimization.

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Topics: dan luna, technology

EES Engineers Put a Wooden Stake into the Heart of Vampiric Outdoor Lighting Time Clocks

Posted by Daniel F Luna, P. E. on Apr 24, 2023 8:30:00 AM

Lighting based on time clocks can sometimes feel like it’s a draining the life out of your wallet. EES tackles this problem with a simple, closed-loop control solution.

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Topics: controls, control systems, engineering, dan luna, open-loop controls, outdoor lighting system

Rejuvenating Garage CO Safety Systems

Posted by Daniel F Luna, P. E. on Mar 24, 2023 1:59:49 PM

It has become common practice to build underground or under-building parking lots for facilities. Each structure requires a CO monitoring system that jumps in to action when the level of CO gas becomes too high. Every one of these systems requires periodic (semi-annual) calibration and testing to protect the patrons and the building owners.

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Topics: engineering, building controls, transportation, dan luna

Daylight Savings Time – Friend or Foe?

Posted by Daniel F Luna, P. E. on Mar 9, 2023 1:05:17 PM

Sunday, March 12th, we'll 'spring forward' an hour on our clocks. Soon, Congress is going to vote to put to rest the yo-yoing of clocks twice a year.  If and when it does become law, we will be staying this way "forever." But is this a good or a bad thing?

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Topics: engineering, dan luna, technology, SCADA

Planned Technology Refresh Hedges Against Obsolescence

Posted by Daniel F Luna, P. E. on Mar 2, 2023 2:16:25 PM

When you retrofit Rockwell SLC Hardware that has reached it’s end of life, you transform old equipment to perform like new again.

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Topics: control systems, PLC, engineering, dan luna, technology

EES’ Top Three Cybersecurity Tools to Protect Your Network from Attack

Posted by Daniel F Luna, P. E. on Jul 9, 2021 11:50:18 AM

With today’s ubiquitous device connectivity, protecting your building management and transportation system operations from cybersecurity attacks is imperative. Sophisticated criminals have developed the means to shut down and disrupt operations from anywhere in the world. Vice President of Engineering Dan Luna shares tips and three tools to maintain the security of your system.

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Topics: dan luna, firewalls, cybersecurity, network monitoring