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BPE Energy Recovery Ventilators (ERVs)
WHAT THEY DO: Building Performance Equipment, Inc.'s ERVs are able to precondition fresh outdoor air to room temperature for your building, school, office, or home while substantially reducing your energy bill, improving indoor air quality, and reducing the emissions that feed global warming. In other words, the units efficiently recover energy from stale air leaving the building and use it to warm room temperature in colder months and cool it during the warmer months.
WHAT GOES INTO THEM: Building Performance Equipment, Inc. ERVs are made from medical-grade polypropylene, a rugged resin that is resistant to many chemicals, bases, and acids as well as the growth of mold or formation of frost. BPE's patented polymer construction has no moving parts, requires little to no maintenance, and allows for low pressure drops as well as high-heat and high-moisture transfer. This versatility enables the units to excel at providing comfortable indoor air quality (IAQ) and humidity levels while maintaining temperature control. Each unit comes standard with BPE’s 10-year limited lifetime warranty. Typically, inline fans are installed separately. (See BPE's recommendations.)
WHAT MAKES THEM SPECIAL: Sure, our units are longer than your average ERV, but thanks to BPE's patented engineering, everything about them aims for bigger and better. These high-efficiency, air-to-air, direct counter-flow energy recovery ventilators are typically 80% thermally efficient on up to 98% and have an Energy Efficiency Rating (EER) that is unsurpassed at between 36 and 160 EER. (10 EER is typical of the industry.) Click here to see our Brochure.
Please review our products below and consider a BPE ERV for your next new construction or retrofit ventilation project.
These galvanized steel units are specifically sized to handle residential, small offices and dedicated ventilation applications.
Simplified residential Installation manuals are a good point of reference for installing the nominal 400 and 500 series BPE units. Typically, you would install these units with two fans that provide 50% to 75% of nominal cfm in airflow. At this 50% to 75% flow range, the BPE units typically operate at 80% to more than 90% thermal efficiency. Where the 400 Series is slimmer than the 500 it will fit behind a drop ceiling nicely. The 500 Series is slightly larger and meets the needs of light commercial applications and classrooms of 25-30 students in an "On Demand" ventilation scenario.
Simplified residential Installation manuals are a good point of reference for installing the nominal 200 and 500 series BPE units. Typically, you would install these units with two fans that provide 50% to 75% of nominal cfm in airflow. At this 50% to 75% flow range, the BPE units typically operate at 80% to more than 90% thermal efficiency.
Perfect ERV for a 2-3 story commercial building or small industrial application.
Rated for 1,000 CFM, this galvanized steel model is also the perfect choice for a school wing, institutional lecture hall, nursing home or multi-family housing.
Weighing less than 160 pounds, makes it possible to install in any plenum, drop ceiling,mechanical mezzanine or outdoors. (Stainless Steel is available for harsh environments as a special order)
Most School classrooms can be ventilated with a dedicated outdoor air ventilation system using a 200 or 500 cfm BPE unit. Typically these units are installed with two fans that provide 50% to 75% of nominal cfm in air flow. If it is 50% to 75% flow range, then the BPE unit typically operates at 80% to 90% + thermal efficiency.
Designed to handle all large scale commercial and industrial applications the 2,000 and 3,000 cfm units are now also made with integral supply inlets and outlets.
These larger modules simplify many medium size jobs where it would normally require two units. The units can be stacked vertically or aligned horizontally in parallel and groups. Installed indoors or outdoors. 316 Stainless Steel is also available for harsh environments as a special order.
This is a photograph of a 6,000 cfm installation that is in a mechanical room with very limited access. By building up 2000 cfm modules, 30,000 cfm modules or more can easily be assembled in hard to reach mechanical rooms or deep within existing buildings without the use of expensive lifts or cranes. Typically stairways or elevators can be used to install the world's most efficient energy recovery modules. The BPE modules can also be pre-assembled and shipped out on a pallet, if the final installation location is accessible with the large energy recovery modules. Fans and air intakes are added as needed and can be field configured.
Multi Modular Units
The BPE Energy Recovery Ventilators are modular and can be used in combination with one another to operate up to 20,000 CFM. They can be stacked 4-5 units high and configured for multiple inlet and outlet circuits
See BPE ERV's Standard Specifications to download your copy of the Architect and Engineer Standard Design Specifications.
Also see BPE Commercial Install Guide to download your copy of the Installation, Operation, and Maintenance Manual.
For a pool installation, see our specific guide BPE Pool Installation Manual to download your copy of the Energy Recovery Ventilation System Guidelines for a Pool Application.
For a data center installation, see our specific guide BPE Data Center Manual to download your copy of the Energy Recovery Ventilation System Guidelines for a Data Center Application.
Introduction to Latent Only Cooling
What is latent heat? Latent heat can be thought of as the forgotten cousin of sensible heat, which is what you feel when temperatures change. Latent heat works behind the scenes as the energy needed for solids, liquids, and gases to phase between each other. This energy breaks down the connections between molecules in order for them to change form. For example, throughout the process, the heat that is added to melt a solid such as ice into water or evaporate a liquid into a gas will remain the same temperature until the conversion process is complete. As it pertains to ERVs, that energy can be harnessed and used to control the moisture or humidity via Latent Only Cooling.
How does Latent Only Cooling work? Latent only cooling is a method of utilizing the cooling energy of air leaving an existing or new construction fan coil or air handler to simultaneously pre-cool the air entering the air handler and reheat the air leaving the cooling coil. Installations and field tests have shown this can take an average fan coil (either direct exchange (dx) or chilled water type), and render the unit up to over 95% latent with very little temperature change.
When the fan speed is adjusted, we have found the leaving air temperature to approach within less than one degree Fahrenheit the entering temperature. Part of this is due to moisture or latent heat of condensation that has more effect on the air that has left the cooling coil to reheat this air to near the starting temperature or room temperature. This effectively allows very precise control of the moisture in the air without dropping the temperature.
A 6,000-cfm latent only unit that not only saves energy but allows better
humidity and moisture control in an industrial plant located in a tropical jungle climate.
Clients have used Latent Only Cooling for outside air and for air recirculated from the space. We find recycling the air from the space allows the most efficient and precise control. A separate system can be used to bring in outside air and exhaust air from the space. A combination of recycled air and mixing this with pre-tempered fresh outdoor air can also be used. BPE energy recovery modules can automatically (based on engineering design) track the interior space temperature, and this is the engineering nature of a true direct counter-flow heat exchanger. See our specific guide Latent Cooling Install Guide to download your copy of the Latent Cooling Manual.
Figure 1 is a latent only device that uses a BPE unit and a chilled water coil as a run around loop to drastically reduce the required re-heating and cooling capacity. When in steady operation, return air from the space will be pre-cooled through the exhaust plenum of the heat exchanger by air leaving the cooling coil (supply air). By absorbing the heat of the return air, the supply air not only assists in pre-tempering the return air before the cooling coil, but it reheats itself. It has been found through testing that this can reduce 80% of the sensible load and some of the latent load as well as greatly reduce the cooling tonnage needed to dehumidify air.
The company that invented the circular duct fan more than thirty years ago has taken the inline duct fan and improved its performance and energy efficiency with EC (electronically commutated) motors. Driven by EC technology, the fans now consume an average of 30% less energy than standard AC fans. EC motors use intelligent technology with integral electronic controls to ensure energy savings no matter what the airflow demands. Reduced energy usage results in lower operating costs. The motors develop less heat so significantly less maintenance is needed and the lifetime of the motor is increased. Virtually airtight galvanized steel housings meet code requirements for both residential and commercial applications.
Based on hundreds of field installed and operating DOAS ventilation systems, we have found that CO2 controlled ventilation systems are by far the most energy efficient. They also provide superior IAQ and IEQ! Typically, in a high-use area or a classroom, the BPE® ERM is at room temperature. When people enter the classroom, the ERM acts as a thermal mass providing thermal efficiencies approaching 98% while the CO2 sensor turns on the fans to accommodate the increased occupancy. This is a good reason to install the ERM in a building housing a CO2 sensor. The EPA ENERGY STAR® success story has documented such energy savings can be quite good.
The BPE-XE-MIR-CS is a prefabricated control box with variable speed controllers. This control system can be incorporated with various controls (e.g. CO2 Sensor, Humidistat etc.) by simple wiring, and the fans are easily powered by a three-prong power cord connection. The BPE- XE-MIR-CS can save time and money by providing an easy option for installation. It is simply a "plug & play system"
Variable Speed Controller
The CO2 sensor we like to specify and use is the GE Telair sensor. It has an auto calibrating feature that keeps the sensor working for 10 years without maintenance or calibration. This is sustainable, reliable, and saves time and money! See information on the sensor below and the BPE® install manual for schools for more information.
The TrueIAQ can autonomously manage the indoor air quality and comfort of the conditioned space by communicating with the humidifier, dehumidifier, and ERV. Adjusting the humidity is important for the comfort of the space as well as the quality of the air. Too much humidity can cause mold, mildew, and dust mites. Too little humidity can lead to dry skin and infection.
As homes are built tighter, ventilation is required by ASHRAE standard 62.1 and 62.2. The TrueIAQ can be programmed to turn the ventilation system on and off at specific times of day and/or be turned on with a timer switch.
See the Owner's Guide for more details
Contact your local rep for pricing on our equipment