Energy recovery ventilation is the energy recovery process of exchanging the energy contained in normally exhausted building air and using it to treat the incoming outdoor ventilation air in commercial HVAC systems. This process increases efficiency in commercial HVAC systems while reducing operating costs. During the summer months, the system will cool and dehumidify air entering the building with the “used” air leaving the building. Similarly, during the winter months, the HVAC system will warm and humidify the air using the same process.
The energy recovery ventilation process provides several key benefits. It allows the ability for an operation to meet the ventilation and energy standards set forth by the American Society of Heating, Refrigerating and Air-Conditioning Engineers, as well as improving the indoor air quality and reducing the HVAC equipment requirements and the loads placed upon the components within the commercial HVAC equipment.
This process is attained through the use of an energy recovery ventilator which is a type of air-to-air heat exchanger that transfers sensible and latent heat. The efficiency of this type of system is the ratio of energy transferred between the two air streams compared with the total energy transported through the heat exchanger. As with all manufacturers, specific efficiently ratings vary amount product, as well as location and application. Some systems have been shown to have heat exchange efficiency as high as 70-80 percent, while others are as low as 50 percent. New technology is constantly being developed to increase efficiency ratings and each year new systems are introduced to the market. Check with American Services today, your commercial HVAC service near Fenton to see if your operation would benefit from an energy recovery ventilation system.
If you are looking for ways to improve the efficiency of commercial heating and cooling systems, consider incorporating new control strategies to ensure systems are engaged operationally only when necessary. Effective common control strategies include programmable thermostats, multiple zone breakdowns and CO2 demand sensors. These strategies can be specified on new heating and cooling systems and retrofitted to older systems as well.
Programmable Thermostats: These simple affordable, easy to install thermostats allow convenient night/weekend settings that generate energy savings. Models are usually available from $45 to over $200 depending on the features desired. Most systems include manual overrides to ensure comfort for late night shift employees.
Multiple Zones: By dividing your facility up into multiple heating and cooling grids, your system can deliver more efficient heating and cooling by eliminating inaccuracies and excessive usage from a central control sensor point. In addition, building occupants in different grid areas can adjust the temperature to meet their actual needs. If your facility has many rooms or floors, multiple zone programs are recommended.
Demand or CO2 Sensors: Most heating and cooling systems are outdated and draw in ventilation air by assumed occupancy, however modern technology has side stepped this by designing systems which actually adjust the air quality of your facility by measuring the percent of CO2 present. The result is more energy-efficient operation and better air-quality.
Similar to your automobile, your building’s heating and cooling system needs a preventative maintenance plan to operate efficiently. To improve system efficiency and help ensure reliability and component longevity, consider the following maintenance tips.
- Engage a qualified HVAC firm such as American Services in a maintenance contract with semi-annual tune-ups. During these tune-ups, a technician should inspect combustion efficiency, refrigerant charge, and belt tension as applicable.
- Air filters should be changed regularly. Accumulated dirt and dust make your fans work harder. Clean or replace filters according to manufacturer’s recommended specifications.
- Keep the evaporator and condenser coils on your heat pump, air-conditioner, or chiller. Dirty coils can cause overheating. By keeping them clean you save energy.
To inquire about our services and get a quote for cooling sales in Jefferson County, contact us at American Services located in St. Louis MO.