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The WELL Building Standard - Indoor Air Quality Factors 

By Michael Moriarity on Mar 19, 2018 9:02:00 AM

The WELL Building Standard provides important guidance around the interests of human health, wellbeing, productivity and sustainability with a focus on the occupant. It includes benchmarks, goals and compliance requirements for owners and other building stakeholders. The WELL Building Standard covers seven core concepts of healthair, water, nourishment, light, fitness, comfort, and mind – for all types of buildings, including commercial office, retail, industrial, residential and restaurants.

Our last blog post on the WELL Building Standard discussed how building owners can maximize their "comfort" concept score for WELL certification. This post, the second in our series, is focused on the why the WELL Building Standard is so important for the "indoor air quality" (IAQ) environments of the future and how 75F can help you deliver improved air quality for your occupants and achieve top air quality scores toward WELL certification.

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Maximizing Efficiency with Variable Frequency Drives (VFDs) & 75F Intelligent Controls Approach

By Michael Moriarity on Dec 4, 2017 9:01:00 AM

 

An HVAC system that incorporates variable frequency drive (VFD) with scheduling control can deliver significant energy savings, especially when deployed at scale along with a building intelligence solution offering predictive and proactive controls for incremental adjustments for variable loads.

In many states and cities, VFDs are required by building code on rooftop units (RTU) and air handling units (AHU) of nine tons or greater. HVAC systems are designed to cater to the peak design load of a building. However, most of the days the building experiences partial loads, either because of milder weather or lower than maximum occupancy load. VFDs offer higher efficiency during partial HVAC load scenarios. VFDs also help reduce inrush current at startup, plus lowered mechanical stress.

In AHU's with variable loading capacities, the 75F CCU will continuously adjust both the chilled water supply as well as fan speed to accommodate the building load. Such equipment can take advantage of the small granular control in capacity between 0-100% that the 75F system can offer.  

However, 75F is often deployed with simpler HVAC equipment with only 1 or 2-stages of cooling or heating. In such a case, we follow an approach that modulates the fan speed based on 3 primary positions for 2-stage RTUs.

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The Smart VAV with Reheat System

By Michael Moriarity on Aug 10, 2017 9:11:18 AM

 

 

Whether your HVAC system runs on Variable Air Volume (VAV) or Constant Volume (CV), you're currently missing out on energy efficiency and equipment efficiency opportunities.

The 75F Smart VAV with Reheat™ solution allows for variable air volume, temperature and pressure, as long as your desired space temperature is achieved. We work to optimize VAV with reheat performance with a continuous commissioning, pre-configured, out-of-the-box solution.

Why should you face limited choices when an energy efficient system is available that allows all variables to fluctuate for optimal comfort levels?

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Why Your Energy Management System Isn't Working

By Michael Moriarity on Jul 20, 2017 5:29:00 PM

When was the last time you performed a diagnostic check on your Energy Management System (EMS)? Have the complaints about heating, cooling or ventilation increased? Are they manageable? Can you see HVAC and lighting schedules and usage on one user-friendly dashboard?

Many buildings use EMS technology created in the 1990s or early 2000s. This limits building management and automation capabilities, exposes your business to avoidable cyber security risks, and frustrates building occupants. You don't have to deal with lackluster EMS performance when cost-effective, smarter solutions are available.

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7 Reasons Why You Still Have Hot or Cold Spots at Your Restaurants

By Michael Moriarity on Jul 19, 2017 11:25:36 AM

Imagine a restaurant entryway that's hotter than the warm air outside. Then, when you get seated, you're wishing you had brought a jacket! It doesn't make for a pleasant dining experience, especially if you were hoping for a nice, cold drink or two.

If you're a restaurateur, potential revenue is walking right out your door, or maybe not even entering your restaurant because of the temperature imbalances.

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Heating and Cooling Costs in Commercial Buildings

By Michael Moriarity on Jul 12, 2017 9:31:44 AM

The U.S. Department of Energy (DOE) has found that about 40% of energy costs for the average commercial building are spent on heating, cooling and ventilation. This equates to about 7.5% of total costs for the average office building, since 19% of total costs are energy costs.

In 2012, a DOE study found that U.S. commercial building owners could save an average of 38% on heating and cooling costs if they install an energy efficient HVAC control system. The range of cost savings (22% to 56%) determined by the study depends on building size, building use, regional climate and local utility costs.

Imagine if you were the building owner or operator who helped your tenants save between 30% and 50% on their energy bills each month by making an energy efficiency HVAC investment, which typically earns a three-year back or less.

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