Abstract:
Method for using renewable energy sources, comprising at least one remote energy generation plant, which is operated by a renewable energy source, a remote control unit at the location of the at least one remote energy generation plant, which controls the operation thereof, and a central control unit, the method comprising the following steps: a) Producing a proposed schedule, in which for a future time period presettings for the operation of the at least one remote energy generation plant are established, and transmitting the proposed schedule to the central control unit via a computer network, b) Producing a schedule based on the proposed schedule, c) Transmitting the schedule from the central control unit to the remote control unit via a computer network, d) Automatic control of the at least one remote energy generation plant by the remote control unit according to the schedule.
Abstract:
An automated method causes a terrestrial solar cell array to track the sun. The solar cell system includes motors that adjust a position of the array along different respective axes with respect to the sun, wherein a first motor adjusts the inclination angle of the array relative to the surface of the earth and a second motor rotates the array about an axis substantially perpendicular to that surface. The method includes (a) using a software algorithm to predict a position of the sun at a future time; (b) using a computer model to determine respective positions for the motors corresponding to the solar cell array being substantially aligned with the sun at the future time; and (c) activating and operating the motors at respective particular speeds so that at the future time the solar cell array is substantially aligned with the sun. The future time may correspond to any time during operation. An initial future time may correspond to a start up time after sunrise at which point the solar cell is to begin tracking the sun.
Abstract:
The invention provides consumers, private enterprises, government agencies, contractors and third party vendors with tools and resources for gathering site specific information related to purchase and installation of energy systems. A system according to one embodiment of the invention remotely determines the measurements of a roof. An exemplary system comprises a computer including an input means, a display means and a working memory. An aerial image file database contains a plurality of aerial images of roofs of buildings in a selected region. A roof estimating software program receives location information of a building in the selected region and then presents the aerial image files showing roof sections of building located at the location information. Some embodiments of the system include a sizing tool for determining the size, geometry, and pitch of the roof sections of a building being displayed.
Abstract:
A method for generating temporal solar irradiance values for a selected area. Binary format hillshade files are generated for selected azimuth and altitude points on the Sun's path for selected time points for the area. Data in the hillshade files is reclassified into reclassified files, on basis of the selected time points relative to the solar radiation data. The reclassified files are then summed to generate a set of normalized reclassified files, each representing a selected intermediate interval. The values for each corresponding one of the cells in the set of normalized reclassified files are summed to generate an irradiance-weighted shade file. The hillshade files are summed by inclusively OR-ing corresponding values for each of the cells in each of the hillshade files to generate respective composite files for each said selected intermediate interval. The composite files are then summed to generate a summed shade/time frequency file in which each data point therein represents the frequency of repetition of corresponding cells in the hillshade files over a selected upper interval of time. Each data point value in the irradiance-weighted shade file is then divided by the corresponding data point value in the frequency file to generate a file having solar access values for the upper interval, relative to the intermediate interval, for the selected area.
Abstract:
A system and method for identifying the solar potential of rooftops. In one embodiment, solar-potential criteria and three-dimensional spatial data and tabular data, for a selected area including parcels on which the rooftops are located, are entered into a geographic information system. Three-dimensional aerial data of the selected area, including the rooftops in the selected area, is collected. Solar azimuth and altitude angles are calculated for regular intervals to generate shadow simulation data representing shadows cast onto the rooftops by obstructions. The shadow simulation data is intersected with the XYZ coordinates of the rooftop shapes, as determined from the aerial data, to generate rooftop shade patterns for specific intervals over a specific period of time. The tabular data and the rooftop shade patterns are then used to determine addresses and per-parcel specifications of buildings having said rooftops meeting the solar-potential criteria.
Abstract:
A method for assessing solar insolation potential upon existing building rooftops in a given region comprises: (a) computing Global Horizontal Insolation values based on topographical Digital Elevation Model (DEM) data for the region; computing a Sky Transmissivity parameter as it affects Global Horizontal Insolation based on available climate and cloud cover data for the region; (c) applying an Albedo parameter for ground reflectivity and scattering to determine Diffuse Insolation values; (d) applying a Shading Coefficient based on measuring shadow surface areas in relation to total area from aerial photographs of the region over defined times and periods; (e) determining Total Building Roof Area based on image analysis of aerial photographs of the region, and applying a typical roof slope factor; (f) estimating typical Roof Slope, Type, and Orientation (azimuth) selected from a defined set (vocabulary) of rooftop types based on a visual survey of the region; and (g) calculating Total Building Rooftop Insolation Potential for the given region based the values determined.
Abstract:
A computer which functions by a performance prediction program for a ground source heat pump system of the present invention and a performance prediction system constructed thereby include a dimensionless distance calculating means, a first dimensionless time calculating means, a second dimensionless time calculating means, a boundary time acquiring means, an underground temperature change calculating means, and a tube surface temperature change calculating means. The performance prediction program and performance prediction system can be applied to the design of heat exchange system by obtaining predicted underground temperature data for the ground source heat pump system with high accuracy and predicting the performance for the ground source heat pump system based on the resulting underground temperature changes, etc., in view of the use of a plurality of buried tubes, underground temperature change patterns for buried tubes placed at different intervals, and the use of U-shaped tube heat exchangers.
Abstract:
An excitation event in an oil, gas or geothermal well creates a responsive signal having lower and higher frequency components, which higher frequency component provides information about one or more characteristics of the well. Examples of such characteristics pertaining to a subterranean fracture include: breakdown pressure at fracture initiation, time it takes proppant to reach and to screenout the tip of the fracture, fracture geometry and fracture growth, fracture closure pressure, relative fluid flow through respective perforations, and horsepower requirements to perform a fracture treatment. One excitation event includes creating an excitation signal having a maximum amplitude change occurring within a time t1, which is less than a period t2 of the higher frequency component. Wavelet processing may be used to separate or distinguish the higher frequency waveform from the lower frequency waveform. The information can be used to control a process (for example, a fracturing process) applied to the respective well or one or more other wells. In another aspect, an unidentified signature waveform is compared to identified signature waveforms in a neural network computer database to create an identity for the unidentified signature waveform relative to an identified signature waveform in the database. A system to determine a characteristic of an oil, gas or geothermal well is also disclosed.
Abstract:
A computer processing method for designing an installation layout of solar cell modules on an installation surface of a photovoltaic power generation system is provided. Installation information of the solar cell modules are automatically calculated so as to be fit within the installable area of the installation surface on the basis of information on the solar cell module, information on the installation surface, and information on installation conditions of the solar cell modules, and the calculated installation information is outputted.
Abstract:
The solar energy and solar farms are used to generate energy and reduce dependence on oil (or for environmental purposes). The maintenance, operation, optimization, and repairs in big farms become very difficult, expensive, and inefficient, using human technicians. Thus, here, we teach using the robots with various functions and components, in various settings, for various purposes, to improve operations in big (or hard-to-access) farms, to automate, save money, reduce human mistakes, increase efficiency, or scale the solutions to very large scales or areas, e.g., for repair, operation, calibration, testing, maintenance, adjustment, cleaning, improving the efficiency, and tracking the Sun.