Honeywell G.m.b.h.

Other

Honeywell International Inc.

Jeffrey R Meyer

T Michael Tinsley

John T Adams

Timothy J Kensok

Gary A Smith

James H Krueger

Daniel Thomas Uhrich, Deceased

A method of controlling humidity within a space, where the space communicates with humidity control equipment. The method comprises determining a dew-point temperature within the space, and comparing the dew-point temperature to a predetermined desired dew-point temperature. The humidity control equipment is then controlled based upon the difference between the dew-point temperature and the predetermined desired dew-point temperature. The humidity control equipment can be a humidifier, and the dew-point temperature can be determined by sensing the temperature and humidity within the space, or by sensing the temperature and humidity within a duct, such as a return air duct.

Method of humidity control utilizing dewpoint

A thermostat for use with multistage Heating, Ventilating and Air Conditioning (HVAC) plants where a proportional/integral control loop is present for each stage of the multistage HVAC plant. Filter constants, Ki and Kp as well as stage control points and interstage values can be set independently for each stage.

Flexible thermostat controller that permits various control point

A thermostat which is configurable to be used with conventional fossil fuel furnaces, electric furnaces, heat pumps and other air conditioning equipment and fans. A setup program is included which requires an installer to enter data specific to the type of HVAC plant installed in the building with the thermostat.

Temperature control with stored multiple configuration programs

A space comfort system controls humidity in a space by applying heat to air recirculated to the space when the humidity is excessive and cooling of the air is not required. In a preferred embodiment, the call for heat occurs from the time the humidity increases to a level above a differential band within which is the humidity set point until humidity falls to below the differential band. Heat is applied to the air only when there is no demand for cooling of the air.

Reheat system for reducing excessive humidity in a controlled space

A method and system for improving indoor air quality by controlling the circulation of air by a system fan of a conventional environmental control system in order to achieve a minimum circulation cycle. The method and system prevent nuisance short cycling of the system fan by extending the circulation cycle when the method and system predict the system fan will be activated by the environmental control system for heating or cooling shortly after the termination of the controlled circulation.

Air circulation controller with short-cycle prevention capability

A space heating system with a controllable air humidification capability calculates a theoretical value for the temperature of the interior surface of the space's windows. The system controls humidity in the space to a level just below that at which water will condense on the window surfaces.

Heating system with humidity control for avoiding water condensation on

An adaptive recovery process and apparatus for use in temperature control devices for controlling different kinds of HVAC plants. The process and apparatus include main and auxiliary heat ramps in the adaptive recovery portion for dealing with both conventional and auxiliary stages within one process and apparatus.

Adaptive recovery control scheme for conventional and heat pump systems

A recovery algorithm for a setback thermostat uses the intersection of the space temperature with a sloped recovery temperature line which approximates the change in temperature as a function of time during recovery of the temperature controlled space from a setback temperature, to determine the time at which recovery to the occupancy temperature should begin. The thermostat starts recovery when the current space temperature crosses the recovery temperature line. A useful feature of the apparatus and method which implement the invention, computes and constantly updates the slope of the recovery temperature line. The update of the recovery temperature line slope is based on miss time, i.e., the time between actually achieving the desired next set point temperature and the next set point time associated with the next set point temperature. If the heating or cooling load on the space changes, the recovery temperature will frequently cross the recovery temperature line at a different time, causing recovery to start at a time more compatible with the current heating or cooling load in order to complete recovery at or near the desired time.

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Minneapolis, MN, United States of America

Jeffrey R Meyer