Precision Air & Water Balance
Leaky ducts, sound and vibration inefficiency, heating and air conditioning systems, all of these are areas that can cause building energy inefficiency. With Precision Air and Water Balance, JE Engineering Inc. can help you to be as energy efficient as possible, which saves you money in the long run.
Test, Adjust & Balance (TAB)
Precision Air and Water Balance is certified by the National Environmental Balancing Bureau (NEBB) which is an international certification organization for Test, Adjust & Balance contractors.
We are a NEBB Certified TAB service providers.
Precision Air & Water Balance is NEBB certified in Air and Hydronics and Sound and Vibration. We have two NEBB Professionals and two NEBB Technicians on our team. We perform testing, adjusting and balancing of heating, ventilating and air-conditioning systems, execute sound and vibration testing, and building envelope testing.
Testing, Adjusting and Balancing is a process where heating and air conditioning systems are tested against design standards, adjusted for maximum efficiency, and balanced to insure proper indoor environmental conditions.
The work typically covers balancing and adjusting air and water distribution in areas of the building served by an HVAC system. Areas that do not meet the engineer’s design standards are referred to the appropriate party for correction. Reports are prepared documenting performance and compliance with design standards.
Precision Air & Water Balance keeps an inventory of calibrated tools and equipment necessary to fully test, adjust, balance a wide range of facilities. This equipment includes airflow and velocity measuring devices; water flow gauges; electrical meters; thermograph camera, duct leakage testing equipment, temperature sensors, pressure and humidity sensors; light level, sound and vibration analyzers and other testing devices. Calibration of all the instruments is kept up to date in accordance to the certifying agency and equipment manufacturer requirements.
Duct Air Leakage Testing (DALT)
A significant amount of energy used to produce heating and air conditioning in a building can be lost through leakage in the ductwork system used to deliver the air to the occupied spaces.
Experience has shown that this energy waste can be as high as 30%.
Precision Air and Water balance has the equipment and expertise to test this ductwork to help ensure that all heated and cooled air is delivered to the occupied spaces to reduce energy costs, improve indoor air quality and help ensure comfortable space conditions.
An important aspect of minimizing duct air leakage is specifying an acceptable air leakage rate in the planning and construction document phase of the project.
A typical specification would require a duct air leakage rate of 1% of the delivered air volume. For example: a system which has a supply fan which is specified to deliver 20,000 cubic feet per minute (CFM) of conditioned air to the occupied spaces would be allowed a leakage rate of 200 CFM.
If an acceptable leakage rate is specified in the construction documents, Precision Air and Water Balance can test to verified that the specified rate is achieved which will help ensure that your building is energy efficient and comfortable.
Sound and Vibration Testing and Measurement
Sound and vibration can be a significant problem in both new and existing buildings. Sound and vibration can impact occupant comfort and make good productivity difficult.
JE Engineering is NEBB certified to measure and evaluate sound and vibration levels and may provide evaluations of these problems. Such problems may be avoided in new construction with proper Sound and Vibration commissioning and should be considered with every project.
JE engineering has provided such services for the Army Corp. of Engineers at Hungry Horse Dam and within Glacier National Park.
JE Engineering has been developing its capability to evaluate effective and efficient building construction. Infrared thermography combined with a commercial blower door can be effectively used to evaluate the “tightness” of a building, as well as determine if all exterior areas of a building have been insulated and sealed.
Today’s energy codes and standards call for “tight” buildings that use less energy. Infrared thermography along with using a blower door to establish negative building pressure allow us to evaluate energy waste such as air leakage around windows, and missing or poor insulation from the interior of the building which has proven to be more effective than exterior evaluation.
Infrared Thermography can also be used to find “hot spots” in electrical panels or “hot bearings on mechanical equipment, assist in evaluating roof condition for maintenance and capital planning purposes, and energy loss evaluation for buildings.
Advances in infrared thermography have made it a valuable tool for energy evaluation and preventive or predictive maintenance for buildings and equipment.
Identifying problems relating to these areas early, and being able to take action before the equipment breaks down or you have a major building problem can have a positive influence on your bottom line costs and over the long run, save you time and money.
JE Engineering has used infrared thermography to help ensure the integrity and energy efficiency of the new “LEED Gold” Barrett Hospital in Dillon, MT. An example of that work is shown in the photos below: