Abstract: An on-site controller for an HVAC system is operated to maintain temperature and humidity set points inside an enclosed facility. A weather station inside the facility records microclimate data pertinent to environmental conditions inside the facility, and a weather station outside the facility records microclimate data pertinent to meteorological conditions outside the facility. A summing network compares the inside microclimate data with the outside meteorological data to establish an actuating signal. A throttle, responsive to the actuating signal, varies the power demand for the HVAC system to maintain the predetermined set points for environmental conditions inside the facility.

Abstract: An on-site controller for an HVAC system is operated to maintain temperature and humidity set points inside an enclosed facility. A weather station inside the facility records microclimate data pertinent to environmental conditions inside the facility, and a weather station outside the facility records microclimate data pertinent to meteorological conditions outside the facility. A summing network compares the inside microclimate data with the outside meteorological data to establish an actuating signal. A throttle, responsive to the actuating signal, varies the power demand for the HVAC system to maintain the predetermined set points for environmental conditions inside the facility.

Abstract: A control unit is provided for monitoring the efficacy of an air filter in the ducting of an operating HVAC system. Specifically, the control unit monitors airflow velocity in the ducting to evaluate and control the power requirements that are necessary for the HVAC system to maintain a constant airflow velocity in the ducting of the system. In accordance with the present invention, the power requirements are measured and evaluated during the duty cycle of an air filter, to thereby determine when the air filter needs to be removed or replaced.

Abstract: An air filter system in accordance with the present invention includes a filter housing that defines an airflow channel. A supply roll of a filter medium, and a take-up roll for receiving the filter medium from the supply roll are positioned parallel to each other in the airflow channel. A plurality of wire mesh diverter-screens are positioned between the supply roll and the take-up roll to establish a tortuous path for statically positioning the filter medium across the airflow channel. Periodically, the take-up roll can be rotated to draw replacement filter medium into position on the tortuous path.

Abstract: A system for customizing an HVAC system for operation at a specific site requires defining a benchmark which is based on environmental data taken from the site, and on operational data taken from the HVAC system at the site. For the present invention, this benchmark establishes limits for acceptable environmental conditions at the site and appropriate ranges for cost-effective, operational parameters for the HVAC system. In particular, changes in the operational condition of the HVAC system which result from changes in the environmental condition at the site are evaluated relative to the benchmark. This evaluation is then used by a system controller to identify corrective actions necessary for optimal performance of the HVAC system.

Abstract: An air filter system in accordance with the present invention includes a filter housing that defines an airflow channel. A supply roll of a filter medium, and a take-up roll for receiving the filter medium from the supply roll are positioned parallel to each other in the airflow channel. A plurality of wire mesh diverter-screens are positioned between the supply roll and the take-up roll to establish a tortuous path for statically positioning the filter medium across the airflow channel. Periodically, the take-up roll can be rotated to draw replacement filter medium into position on the tortuous path.

Abstract: A system for customizing an HVAC system for operation at a specific site requires defining a benchmark which is based on environmental data taken from the site, and on operational data taken from the HVAC system at the site. For the present invention, this benchmark establishes limits for acceptable environmental conditions at the site and appropriate ranges for cost-effective, operational parameters for the HVAC system. In particular, changes in the operational condition of the HVAC system which result from changes in the environmental condition at the site are evaluated relative to the benchmark. This evaluation is then used by a system controller to identify corrective actions necessary for optimal performance of the HVAC system.

Abstract: An air filter system in accordance with the present invention includes a filter housing that defines an airflow channel. A supply roll of a filter medium, and a take-up roll for receiving the filter medium from the supply roll are positioned parallel to each other in the airflow channel. A plurality of wire mesh diverter-screens are positioned between the supply roll and the take-up roll to establish a tortuous path for statically positioning the filter medium across the airflow channel. Periodically, the take-up roll can be rotated to draw replacement filter medium into position on the tortuous path.

Abstract: A control unit is provided for monitoring the efficacy of an air filter in the ducting of an operating HVAC system. Specifically, the control unit monitors airflow velocity in the ducting to evaluate and control the power requirements that are necessary for the HVAC system to maintain a constant airflow velocity in the ducting of the system. In accordance with the present invention, the power requirements are measured and evaluated during the duty cycle of an air filter, to thereby determine when the air filter needs to be removed or replaced.

Abstract: A system and method for evaluating, measuring and verifying energy consumption at a facility requires initially establishing a benchmark at the facility based on price-point variations for energy costs, set by the regional ISO. The benchmark is established by measuring the facility's Energy Consumption Level (ECL) over a 30-day period, while no conservation efforts are being taken. To obtain an incentive award, a target value Energy Saving Factor (ESF) is identified relative to the benchmark. Energy conservation efforts are then implemented to control the ECL of the facility in response to price-point variations. When the target value ESF is maintained for a predetermined time, an incentive award is warranted and, once verified, can be given immediately.

Abstract: A system and method for controlling energy consumption at a facility requires categorizing operational devices at the facility into first and second groups, and prioritizing them within the group according to their energy demand requirements. A meter is provided for monitoring an actual real-time energy consumption for each device at the facility, and a totalizer is connected to the meter for measuring a total Energy Consumption Level (ECL) for all devices. A computer/controller is provided for comparing the total ECL with a first price-point (PP1) and with a second price-point (PP2). In operation, the computer/controller implements a prioritized shut down of operational devices in the first group whenever a cost for the total ECL exceeds the first price-point (PP1), and a prioritized shut down of operational devices in the second group whenever a cost for the total ECL exceeds the second price-point (PP2).

Abstract: An automatic filter cartridge in accordance with the present invention includes a frame which is formed with an aperture and an elongated filter medium which is attached to a supply roller and a take-up roller. Specifically, the supply and take-up rollers are placed into respective supply and take-up containers which are mounted on the frame across the aperture. The frame is then positioned in the ducting of an air conditioning system to filter the airflow through the filter medium which extends across the aperture. To monitor the airflow through the ducting, the automatic filter cartridge can further include a computer. With this configuration, a sensor is positioned in the ducting to monitor the airflow through the ducting. When the sensor indicates the filter medium in the ducting is dirty, the computer activates a motor to rotate the take-up roller.