Setpoint optimization for air handling units
AssigneeHoneywell International Inc.
InventorsJiri Vass, Jiri Rojicek, Jana Trojanova
Life of this patent
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Abstract
An approach for providing setpoint optimization for air handling units. An area for such optimization may incorporate choosing a thermal comfort level index, finding a zone air properties target area and computing a supply air properties target area. Beyond the present approach, an outdoor air portion may be optimized, a feasible psychrometric path found, supply airflow versus temperature optimized, and a controller run to meet setpoints.
Claims20
A method for setpoint optimization for an air handling unit comprising:
- selecting a thermal comfort level index setpoint;
- computing a thermal comfort level index space;
- determining a zone air properties target area from the thermal comfort level index setpoint and the thermal comfort level index space;
- and
- computing a supply air properties target area from the zone air properties target area;
- and
- wherein:
- each target area comprises a set of one or more air properties;
- and
- the supply air properties target area defines boundaries for setpoint optimization.
A system for setpoint optimization for an air handling unit comprising:
- a thermal comfort level index scheduler for providing a selected thermal comfort level index setpoint;
- and
- a mechanism for transforming a zone air properties target area to a supply air properties target area;
- and
- wherein:
- the thermal comfort level index scheduler provides the thermal comfort level index setpoint to the mechanism;
- the zone air properties target area has one or more points that satisfy the thermal comfort level index setpoint from the thermal comfort level index scheduler;
- a target area comprises a set of virtually all combinations of air properties;
- the air properties comprise one or more of a group consisting of air temperature, relative humidity, air speed, and radiant temperature;
- and
- the transforming a zone air properties target area to a supply air properties target area comprises using one or more supply air setpoint resets which incorporate building dynamics, internal heat gain and outdoor air temperature.
A method for optimizing a setpoint for an air handling unit, comprising:
- selecting a thermal comfort level index setpoint;
- finding a zone air properties target area;
- and
- computing a supply air properties target area from the zone air properties target area.
Dependencies are inferred from the claim text.