| 摘要 |
<p>Refrigeration plant intended for maintaining the temperature in one or more rooms comprising at least one or more compressors, the outputs of which are connected to one or more condensers whose outputs are connected to one or more coolers which are connected in their turn to the inputs of the said compressors. A control circuit controls all the components such that the temperature in the said room or rooms is maintained within predetermined limits. Said control circuit is provided with a number of local stations, each as signed to a group of components of the plant, in order to control said group on the basis of the operating points applying to said group, which local stations receive status data from sensors in the plant and deliver control signals to switching means with which the operation of the coaponents in the associated group of components can be controlled. A central station which is in contact via a bus line with each of the local stations, via which bus line status data are transmitted from the local stations to the central station and operating point change instructions are transmitted from the central station to each of the local stations, which operating point change instructions are generated in the central station by pro cessing the status data received in an algorithm which strives for a state with minimum energy consumption for the whole refrigeration plant.</p> |
