Abstract: An indoor environmental control and air distribution system for a building includes: an air handling unit; a manifold connected to the air handling unit having a chamber formed by a plurality of walls and a plurality of orifices formed through at least one of the walls; air distribution conduits each independently having a first end connected to the orifices of the manifold and a second end extending out from the manifold into different zones throughout the building; and an airflow modulating device having one or more airflow regulating dampers independently configured to move into at least two positions in which each position provides a different percentage of total air volume to each air distribution conduit. A method of using the indoor environmental control and air distribution system is also included.

Abstract: A sensor element (1) has at least one measurement element (2) with piezoelectric and pyroelectric properties, and measurement electrodes (3). A measurement variable and a disturbance variable act simultaneously upon the at least one measurement element (2) and the measurement signal derived from the measurement electrodes (3) includes an interference signal. The sensor element (1) has at least one compensation element (4, 4?) upon which only the disturbance variable acts, so that a correction signal used to compensate for the interference signal in the measurement signal can be derived from the compensation element (4, 4?).

Abstract: The invention concerns a method to reproduce and display the winding temperature of an electric power transformer by deriving the measured and displayed temperature from the temperature of the coolant cooling the power transformer and the temperature of an electric heater fed with a current proportional to the load of the power transformer. A thermometer system is used for measuring the temperature and comprises of a hollow sensor element (7) and a mechanical transducer (2) connected through a capillary tube (6) with said element (7) to actuate a mechanical display and comprising several switches, the mutually connected cavities of sensor element (7), capillary tube (6) and transducer (2) subtending a closed pressure chamber filled with a test medium of which the pressure changes in relation to pressure.

Abstract: A flow control device (34) is provided and is interfaced with at least one of the HVAC ducts (14). The flow control device (34) is operable to control the flow of air through the HVAC ducts (14) in response to flow control signals. A flow control command device (24) is disposed proximate to one efferent end (16) of the HVAC duct (14) for generating flow control commands. An ultrasonic transmitter (23) is provided and is coupled to the flow control command device (24). The transmitter (24) is operable to generate and transmit an ultrasonic carrier (26) modulated with the flow control commands to the flow control device (34) through the HVAC duct (14). An ultrasonic receiver (28) is provided for receiving the ultrasonic carrier modulated with the flow control commands and extracting the flow commands therefrom. A control system (30) is provided for converting the flow control commands to flow control signals for transfer to the flow control device (34) to control the operation thereof.

Abstract: A liquid expansion thermometer which includes ambient temperature correction means in the form of compensation elements located along the length of the thermometer duct and, each compensation element comprising a hollow shell in which is positioned a solid element, and each compensation element acting to compensate for volume changes in an associated duct segment.

Abstract: A compensated temperature sensing device having a sensing element capable of surviving extreme operating environments while still being able to substantially instantaneously sense temperature changes. This is accomplished by incorporating within the device an auxilliary heat source which artificially heats the sensing gas within the sensing device. The amount of heat added to the device would be dependent upon the error in the sensed to actual temperature and the mass of the sensor which requires a change in temperature level.