FAQ

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What department is managing the contractor (Ameresco)?
Facilities and Services (FS). The FS Work Order desk will be your main contact for questions concerning the construction upgrades and retrofits. The number is 646-7114.

If I see something that appears to be a safety concern, whom should I contact?
David Shearer (575-649-6068) is the main contact from Environmental Health and Safety.

What does HVAC stand for?
Heating, Ventilation, and Air Conditioning

What is a lighting upgrade?
One of the key drivers in seeking out energy performance contractors is the phasing out of T12 fluorescent lighting for more energy efficient T8 lighting due to the 2009 Department of Energy General Service Lamp legislation. NMSU has started the retrofitting process with existing funding, but to convert an entire campus is a costly, time-intensive project. Approximately 33% of the cost of the energy performance contract goes to the lighting upgrades.

What is a Variable Air Volume (VAV) retrofit?
VAV retrofit is the conversion of constant volume air handling system to variable air volume systems. The intent is to optimize the air distribution system to respond to actual load demand. The converted system will allow AmerescoFAQsair distribution to adjust to load changes (e.g. additional people, new equipment) as they occur, resulting in lower thermal and fan electric energy consumption power demand, one of the key drivers.

What is retro-commissioning?
Retro-commissioning is a systematic process to identify the effectiveness of the facilities HVAC control systems. It is primarily focused on identifying operational or energy related issues. It provides a way to inspect, test, and verity that each system is working as per its design intent to deliver proper operation and energy efficiency.

What is an economizer upgrade or repair?
This is to refurbish, repair, upgrade, or replace the economizer dampers in the building mechanical system and the controls that operate them. The intent is to optimize the amount of outside air being treated (cooled or heated) to maximize energy efficiency.

What is a chilled water bypass?
Chilling water is expensive. Chilled water bypass control valves will be installed on all building chilled water pumps served by the Central Utility Plant (CUP). Recent changes to the primary chilled water pumping system at the new Satellite Utility Plant (SUP) now make control of chilled water for air conditioning in the buildings possible from the CUP and the pumps at the building unnecessary for this purpose. The building pumps will remain in place for back-up purposes.

The many acronyms to confuse and confound you!

  • CFL – Compact Fluorescent Lamp: the second-most efficient lamp (light bulb) made
  • ECM – Energy Conservation Measure. See ECM for definition
  • ESCO – Energy Services Contract: our first contract for the investment grade audit was an ESCO. It allowed Ameresco to audit all of our buildings to determine what energy savings could be obtained.AcronymsFAQs
  • HVAC – Heating Ventilation Air Conditioning
  • LED – Light Emitting Diode: the most energy-efficient lamp currently made
  • T8 and T12 – Fluorescent lamp: T8 (1” diam) is a more energy efficient lamp than the T12 (1 1/2” diam). Approximately 80% of our light fixtures on campus use T12’s. Soon they will be switched out to new T8’s using 25 watts instead of 100 watts for 4’ tube.
  • VAV – Variable Air Volume: motor that allows a fan to run intermittently instead of 24 hours a day, thus saving energy.
  • VFD – Variable Frequency Drive: is a type of adjustable speed drive used in electro-mechanical drive systems to control air conditioner motor speed and torque by varying motor input frequency and voltage
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