Abstract: In one example, a method for installing a photovoltaic (PV) system including a plurality of PV components is described. The method includes receiving, by a computing device, a plurality of unique identifiers. Each unique identifier is associated with a different one of a plurality of PV components located at a site. The computing device compares the received unique identifiers to a list of the plurality of PV components in the PV system. The method includes associating each of the unique identifiers with a different component location on a representation of the PV system, and transmitting the associated unique identifiers and component locations to a gateway device of the PV system.

Abstract: Metal surfaces may be cleaned using a dry ice (CO2) blasting processes. Once cleaned, the surfaces are ready to be painted. The process of this invention is especially useful on ships where there are numerous metal surfaces that are subject to dirt and corrosions. The proper operating parameters for each of the types of metal surfaces require exacting conditions. These parameters include the size of the dry ice pellets, the discharge rate of the ice pellets, the type of nozzle being used and the flow rate of the pellets, the pressure of the pellets leaving the nozzle. The dry ice cleaning processes of the present invention eliminates secondary waste streams and moisture, leaving the treated surfaces immediately ready for painting. Only the dirt, loose paint, debris and other surface contaminants removed during the dry ice cleaning process need to be cleaned up prior to preservation and/or painting and return to service.

Abstract: An apparatus and method for controlling a multi-compressor refrigeration system. The controller is designed to maintain a target temperature in a specified area. It achieves this goal by selecting compressor configurations which will maintain a target pressure on the common compressor suction line directing refrigerant into the compressors. As part of the process, the controller first establishes a record of the load handling capabilities of all useable configurations of the compressors. Then, periodically, it detects the current temperature and line pressure; selects a preferred configuration of compressors in accordance with a predetermined algorithmic function of the target pressure, the current line pressure, and the record of the load handling capabilities; and activates the preferred configuration if different from the currently active configuration.