摘要:
A control system and method for achieving economic operation of CHP systems. A plurality of factors, including power source prices and operational needs, are assessed using multiple strategies. The solutions achieved by each strategy are compared, and the best performing strategy is selected. The solution can then be implemented. The assessment of factors and strategies can be updated periodically. A further embodiment includes a method of designing a CHP system using similar methods applied to simulated or estimated future loads and costs.
摘要:
An apparatus includes an image recorder configured to record video images. The apparatus also includes a display screen configured to present the video images to a user and to create notations overlying one or more of the video images based on user input. The apparatus further includes a transceiver configured to stream the video images over a wireless mesh network and to transmit data associated with the notations over the wireless mesh network. The apparatus could also include components for providing cryptographic keys to wireless nodes joining the wireless mesh network, a sensor for detecting or measuring one or more characteristics, and/or an asset tracker for transmitting or receive signals for identifying a location of the apparatus. The apparatus could further include at least one voice unit supporting bidirectional voice communications and/or a site survey unit for identifying signal strengths associated with detected wireless nodes.
摘要:
Monitoring systems and methods for monitoring one or more parameters within process equipment are disclosed. A monitoring system for wirelessly monitoring the process equipment can include a number of wireless sensors disposed within a fluid or gas process stream for monitoring various aspects of the fluid or gas medium such as temperature or pressure. Each of the wireless sensors can include a transmitter that can be used to wirelessly transmit sensor signals to a receiver in communication with a central monitoring unit. The wireless sensors can be placed directly within the fluid or gas medium, allowing accurate measurements to be taken within the process stream.
摘要:
Methods for optimizing a thermocline in a thermal energy storage fluid within a thermal energy storage tank are disclosed. The methods comprise identifying a thermocline region in the fluid, adding thermal energy to a fluid stream extracted from the thermocline region, and returning the fluid stream to the tank at a plurality of locations above the thermocline region. The methods further comprise regulating the temperature of the fluid returned to the tank at a set point temperature by modulating the flow rate of the fluid stream and by changing the location from where the fluid is extracted from the tank.
摘要:
An apparatus for storing and retrieving thermal energy from a phase change material including a plurality of heat exchangers. Each one of the plurality of heat exchangers provides the means for transferring energy between the phase change material on a primary side of the heat exchanger and a fluid on a secondary side of the heat exchanger. The phase change material is a mixture of two or more inorganic salts.
摘要:
The present invention pertains to the installation and positioning of the receivers of a wireless tracking system. In such a system, a wireless beaconing device transmits a signal that can be detected by a plurality of wireless receivers positioned at various known locations. Each wireless receiver records information derived from the signal from which it can make an estimate of the distance or relative position of the beaconing device. A controller correlates the information received from the multiple receivers and uses it to estimate the location of the individual. In such systems, the accuracy of the estimated position of the beaconing device depends on the accuracy to which the positions of the receivers are known. A technique is disclosed in which an installer carries a tracking device that can track the person's position and/or movements. The installer starts at a base location and resets the tracking device to cause the tracking device to record this position as the base position. The installer then walks to the location where the first receiving device will be installed while the tracking device tracks his or her movement or position. At the first installation location, the installer causes the tracking device to record this position as the position of the first receiver installed. The process is repeated for each receiver to be installed.
摘要:
A closed loop neural network based autotuner develops optimized proportional, integral and/or derivative parameters based on the outputs of other elements in the loop. Adjustments are initiated by making a step change in the setpoint which may be done by a user or automatically. A Smith predictor may also be employed.
摘要:
The disclosure involves a coefficient-of-performance (COP) diagnostic method involving the use of novel algorithms for determining performance manifested faults of vapor compression type refrigeration systems.
摘要:
Different components in a wireless transceiver are powered using different power supplies. For example, one or more first tasks in the wireless transceiver can be powered with a Galvanic cell, and one or more second tasks in the wireless transceiver can be powered with a fuel cell. The one or more first tasks could represent higher-current or intermittent tasks, and the one or more second tasks could represent lower-current or continuous tasks. The one or more first tasks could include transmission of a radio frequency (RF) signal, which may involve RF signal modulation or RF signal amplification. The one or more second tasks could include RF signal tuning, RF signal reception, RF signal demodulation, analog-to-digital conversion, digital-to-analog conversion, digital signal processing, operation of a controller, illumination of a display, operation of an audio speaker, operation of a microphone, or operation of a keypad.
摘要:
Different components in a wireless transceiver are powered using different power supplies. For example, one or more first tasks in the wireless transceiver can be powered with a Galvanic cell, and one or more second tasks in the wireless transceiver can be powered with a fuel cell. The one or more first tasks could represent higher-current or intermittent tasks, and the one or more second tasks could represent lower-current or continuous tasks. The one or more first tasks could include transmission of a radio frequency (RF) signal, which may involve RF signal modulation or RF signal amplification. The one or more second tasks could include RF signal tuning, RF signal reception, RF signal demodulation, analog-to-digital conversion, digital-to-analog conversion, digital signal processing, operation of a controller, illumination of a display, operation of an audio speaker, operation of a microphone, or operation of a keypad.