Posts in Category: Building Commissioning

Blog Post List

The Relationship of BECx to LEED V.4 

February, 02, 2017 at 45:00 Categories: Building Commissioning Energy Energy Efficiency engineering

LEED Version 4 has recently put the spotlight on Building Envelope Commissioning (BECx), in a good way. In the event your project is pursuing the credit associated with “Enhanced Commissioning”, you will be required to retain a BECx Agent, and quickly. BECx has been introduced to ensure the performance of the enclosure is coordinated with all related building systems, and to increase the overall energy efficiency of the building.

Some of the key factors associated with the new version are highlighted below:

  • Minimum Requirements for Exterior Enclosure.
  • Enhanced Commissioning Credit, BECx Agent during DD Phase.
  • Enhanced Commissioning Credit, BECx Agent responsibilities throughout the project.
  • Enhanced Commissioning Credit, Provide Post Occupancy Review and Support.
 

What is Building Enclosure Commissioning (BECx)? 

September, 27, 2016 at 22:00 Categories: Building Commissioning Energy Energy Efficiency
HEA loves to stay ahead of the curve - who doesn't? This is why we've put a lot of effort into our newest service offering, Building Enclosure Commissioning (BECx). This process will deliver an efficient building and can also keep your facility in tip top shape. But, first...
 

What is Building Enclosure Commissioning?

 
BECx is a quality-oriented process implemented to provide a building enclosure that meets (and most times, exceeds) Owner's Project Requirements.
 

High Performance Building Envelope 

July, 22, 2016 at 03:00 Categories: Building Commissioning Energy Energy Efficiency engineering



By: Robert Golda, Building Enclosure Associate

As building codes and energy codes continue to advance, especially as they are beginning to align with the latest versions of ASHRAE 90.1, the requirements for higher performing exterior envelopes is becoming the norm on many buildings across the country. 

With more stringent U-values, and much lower Solar Heat Gain Coefficients (SHGC) for fenestration systems, the cladding industry is quickly reacting by providing more high performance systems for the typical building stock. In addition, strong research into the effectiveness of air barriers, and the demonstrated cost savings when they are properly designed and installed, continues to highlight the importance of the building envelope and its roll in energy performance.

 

Solutions For Keeping Your Building Cool in the Summer 

Chilled Water

By: Christopher Duranceau, CCP, Project Engineer

With the summer temperatures gearing upwards, it is important for facility operators to be proactive with their building’s HVAC cooling systems. Most large HVAC systems rely on mechanical cooling. This could be a chilled water system or perhaps a closed loop direct expansion (DX) system. Each system presents its own unique set of maintenance requirements before being able to fully operate during the cooling season.

This article will quickly summarize the needs of a chilled water system and DX system.

 

Variable Refrigerant Flow (VRF): Growing Trend Explained 

May, 31, 2016 at 19:00 Categories: Building Commissioning Energy Energy Efficiency engineering

VRF

By: Thomas Conn, Field Engineer, NYC Office

Introduction
Variable Refrigerant Flow, commonly referred to as VRF, is a method of heating and cooling spaces that is quickly gaining acceptance and popularity in the United States. Although VRF, which uses refrigerant in either a subcooled liquid or superheated vapor state to heat and cool spaces, was invented in Japan in 1982, it was only introduced to the United States in the 2000s. This “new” technology spread quickly across several large markets and is now a viable option for heating and cooling in almost any application.

What is VRF?
The concept of VRF is a rather simple, and literal, expansion of the tried and true refrigeration cycle. It should be explained by comparing it to a traditional chiller system first: instead of the evaporator being a heat exchanger where the refrigerant cools down water to be pumped through terminal units to cool a space, the refrigerant flows through coils inside an “Indoor Unit” which blows air taken from the conditioned space over the coils (which are acting as the evaporator), cooling the air and heating the refrigerant. The refrigerant travels back up to the “Outdoor Unit” to be pressurized by the compressor and reject heat to the atmosphere in the outdoor unit’s coils (this takes the place of a condenser in a traditional system)...

 

Employee Spotlight: Ryan Younis 

Employee of the Month
May, 04, 2016 at 56:00 Categories: Building Commissioning Energy Efficiency

Employee of the Month: Ryan Younis, Field Engineer.

Aside from being an all-around amazing engineer, Ryan identified over 30 deficiencies that could have created major issues with system operation if not brought to anyone’s attention. Here's a quick Q/A with him:
• If you could vacation anywhere on the planet, where would you go? I have always wanted to go explore the Philippines.
• What is something about you that would surprise people? I just adopted a puppy – a dachshund beagle mix named Ella!
• Describe your perfect Saturday? Boozy brunch and a day in the Prospect Park with the dog.
• What is something you would like to learn to do? I love home improvement, so I would love to learn more about do-it-yourself home improvement.  
• What do you like best about working at HEA? I like being involved in the energy audits and reducing the energy consumption of major NYC buildings.

 

HEA is Providing Commissioning Services for the Tappan Zee Bridge Replacement Project 

April, 26, 2016 at 08:00 Categories: Building Commissioning Energy Efficiency engineering

 Horizon Engineering Associates, LLP (HEA) has been hired by Tappan Zee Constructors, LLC (a consortium of some of the world’s best-known and most highly-regarded design, engineering and construction firms) to provide Independent Quality Assurance Commissioning Engineering services for the $3.98 billion Tappan Zee Bridge replacement project.

HEA will be providing commissioning services for all bridge and facility systems (maintenance and state policy facility). Building systems include bridge systems (power, lighting, intelligent traffic systems, structural health monitoring, security, network communication, radio and facilities systems), building automation systems, mechanical, electrical and plumbing systems. HEA’s services will provide documented confirmation that building systems function in accordance with criteria set forth in the project documents to satisfy the owner’s operational needs.

 

Identifying and Fixing a $250,000 blunder 

July, 28, 2015 at 35:00 Categories: Building Commissioning Energy Energy Efficiency engineering

By: Scott Lance, EBCP, LEED AP O+M, Senior Project Engineer

Overview:

  • HEA was hired to provide commissioning services for a higher education dormitory.
  • During the test and balance (TAB) period of the project, it was discovered by the TAB contractor and HEA that the dual temperature system was unable to be balanced. It was also noted that the extremities of the two wings of all three floors could not provide any heat to the occupied dorm rooms. This resulted in parents pulling students out of school due to the dorms not being able to be heated and 85% redo of the building piping systems - a $250,000 error!

 

Greenbuild 2014: Impressions and Lessons Learned 

greenbuild1

So it’s that time of the year again….leaves are changing colors….pumpkin everything is abound….and time for Greenbuild 2014! This is my third Greenbuild, with Toronto -2012 & Flipadelphia – 2013 (go Mets!) being my predecessors, so we were going into New Orleans – 2014 with a good idea of what to expect and how to “attack” the conference.