More specifically is your heating, cooling, and ventilation (HVAC) system on schedule? Do your restroom room fans run at night when you are not there? Are you heating or cooling the entire building when no one is working? Changing temperature setpoints and scheduling HVAC equipment to turn off when the building is unoccupied is an easy way … Read more
Hard water is found in many water supplies across the country. Hardness is the measurement of the concentration of calcium and magnesium compounds found in water. These compounds enter the water system from groundwater sources. Calcium and magnesium compounds can become separated from the water and cause scaling in equipment and piping. Scale can decrease fixture flow rates, decrease … Read more
A freeze stat is a sensor located in your HVAC system that is designed to minimize the potential of freezing a water or steam coil in your air distribution system. A true freeze stat is directly interlocked to shut down equipment and requires a manual reset if it trips. This is different from a low-temperature sensor that … Read more
Electronically commutated motors (ECMs) have quickly become standard in the HVAC industry. They can have unexpected operating characteristics that are very different from their predecessor, the alternating current (AC) permanent split capacitor (PSC) motor. An ECM is a brushless, direct current (DC) motor that operates at a synchronous speed. ECMs utilize integral inverters so they … Read more
Natatoriums are typically among the most corrosive environments facility staff must maintain. The design architect, HVAC engineer, and pool consultant must work together to reduce the causes of corrosion. In addition, all designers involved, along with facility personnel, need to be keenly aware of the factors that contribute to natatorium corrosion. The primary drivers of … Read more
Psychrometrics can be a complicated field of study. However, a psychrometric chart can be a simple, invaluable tool to help HVAC engineers and owners understand the relationship between air temperature and humidity. Relative humidity (RH) is a term that most people are familiar with, but its relationship with dry bulb (DB) temperature is typically under-appreciated. RH … Read more
As we leave the heating season, many building owners begin repair and replacement projects in their boiler plants. Boilers that burn fuel to heat water have been around for thousands of years, and technologies that we would recognize today date back to the early 1700s. More recent trends in boiler construction and control focus on … Read more
At the end of most construction projects, there is a warranty period, but not all mechanical failures and problems occur within the warranty period. Sound familiar? One option is to get a service agreement from another company or local contractor; however this can be costly, especially if only minor repairs are required when the building … Read more
No, we’re not trying to make a political statement. Whether or not there will be a change in the White House this year, there are changes coming for the construction industry. In 2012, the new version of the International Building Code (IBC) family is being issued. Depending on your jurisdiction, the 2012 version of the … Read more
For many years, chilled beam systems have provided space conditioning to buildings throughout Europe and Australia, but the technology has been slow to catch on in the United States. However, that trend is changing as the system has reported benefits of superior comfort and substantial potential energy savings for little or no additional cost when … Read more
If you are in the design, construction, or facilities management business you are probably getting inundated with questions about LED lighting. If you looked into LED’s a year ago, you were probably disappointed in the options available, light output, cost, etc. Commercial lighting applications utilizing LEDs as a light source have come a long way … Read more
Chillers have been the workhorses of building cooling systems for decades. In recent years, a renewed focus on energy efficiency has led to new and renewed trends in the chiller equipment market such as: Magnetic Bearing Compressors With this breakthrough technology, the compressor impeller shaft is levitated by a magnetic field. The result is a … Read more
Emergency showers, eyewashes and drench units are common equipment in hospitals, laboratories, science classrooms, maintenance shops and anywhere hazardous chemicals are handled. OSHA regulations require “Where the eyes or body of any person may be exposed to injurious corrosive materials, suitable facilities for quick drenching or flushing of the eyes and body shall be provided within … Read more
Spring is upon us and so is the unpredictable weather; a warm summer-like day next to a frigid, blustery cold day, sound familiar? As we get into spring and into those swing days before air conditioning systems are completely commissioned and operational from the winter shut-down, some systems are caught unprepared for the unseasonable temperatures … Read more
The Pennsylvania Department of Education recently released changes to PlanCon instructions that will have a significant impact on project reimbursement and feasibility studies for educational facilities. The updated instructions can be downloaded from the Pennsylvania Department of Education (PDE) website. These changes are to take effect for all forms submitted after January 31, 2011, and … Read more
The following are some key energy conservation code changes that engineers, architects and owners should know about in order to minimize negative impacts to your facility. Section 502.2 Increased insulation requirements and details for opaque building elements including specific requirements for Group R occupancies. Section 502.4 Limitation of hot gas bypass based upon unit size. The … Read more
The following are some key plumbing code changes that engineers, architects, and owners should know about in order to minimize negative impacts to their current or future projects. Section 412.2 Identifies additional requirements for floor drains and states that they must have ready access for servicing and cleaning. This section further stipulates that drains are not … Read more
The following are some key mechanical code changes that engineers, architects, and owners should know about in order to minimize negative impacts to their current or future projects. Section 306.5 Addresses the accessibility of equipment on rooftops and outlines when permanent ladders must be installed to make equipment readily accessible for service. This section states … Read more
Construction codes have been part of our society for thousands of years, and while the purpose of building codes has always been to ensure and maintain our safety, learning and staying current with the codes that affect our industry can be a daunting task. Regardless of how time-consuming it may be, taking the time to … Read more
Show Me The Money Along with new legislation surrounding the energy conservation movement comes a number of funding streams available to businesses and organizations like yours to implement energy improvement projects. Both energy conservation and alternative energy projects may be eligible for the following funding opportunities: The deadlines, restrictions and application process for each of … Read more
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