November 14, 2007—Lime Energy Co. has announced two major enhancements to its eMAC (equipment monitor and control) technology for commercial unitary (packaged) air conditioners. The first is a sensor to monitor carbon dioxide (CO2) readings in the conditioned space. The second addition is the ability to allow eMAC to communicate via cell phone protocol, which allows more flexibility regarding locations where the technology may be installed, says the company.
The addition of a CO2 sensor to eMAC allows building owners to obtain a better score toward LEED certification in new buildings, since high CO2 conditions can happen when inadequate outdoor air is introduced via the air conditioning and ventilation system. The CO2 sensor in the eMAC gives an opportunity to measure and manage indoor air quality and efficiently provide the right amount of outdoor air to achieve the optimal balance of air quality and energy consumption.
The eMAC is a Web-based control, monitoring, and remote diagnostic system for commercial packaged air conditioning. Sensors are installed at the thermostat and the air conditioning unit to monitor temperature and energy use which is communicated via wireless web-based technology back to a monitoring center at Lime Energy.
Technicians can remotely monitor and control the air conditioning system to achieve desired space temperatures at all hours of the day and night, interpret system alarms, and if required dispatch repair crews and monitor their work. Today, the eMAC system is in use at some of the nation’s largest banks, restaurants and retail stores, providing clients the ability to achieve centralized HVAC control of local branch operations.
Lime Energy is one of the nation’s leading energy efficiency technology and engineering companies. See the Web site for more information.
