Abstract: Disclosed is a control device capable of reducing CO2 emission and primary energy consumption, as well as energy supply cost, to lowest possible levels in optimal energy management. In repeatedly generating two or more energy balance candidates for each unit time for the outputs of the electric power grid and thermal accumulation unit based on combinations of varied values of the output ratios of a CHP, an RES, a thermal energy supply system, and an electrical storage unit and the consumption ratios of electric and thermal loads until the convergence of the evaluation values of the two or more candidates reaches a convergence criterion.

Abstract: A diagnosis device for a multi-cylinder internal combustion engine having an exhaust turbocharger, the device configured to diagnose a fuel combustion state in each one of cylinders in the internal combustion engine. The diagnosis device includes: a rotational speed detector configured to output a signal corresponding to a rotational speed of the exhaust turbocharger or a signal correlated to fluctuation in the rotational speed of the exhaust turbocharger, and a fuel combustion state diagnosis unit configured to diagnose unevenness in the fuel combustion states of the cylinders through a frequency analysis involving a fast Fourier transformation of a frequency characteristic of a signal output from the rotational speed detector.

Abstract: A control device optimizing evaluation of energy management in an in-plant energy network by exploiting both electric and thermal energy in such a manner as to achieve desirable overall performance. The control device, optimizing evaluation of energy management in an in-plant energy network, improves energy facility efficiency and is applicable in residential areas (e.g., general households), manufacturing industry areas (e.g., factories), and tertiary areas (e.g., office buildings, hotels, hospitals, schools, and swimming pools) for which it is desirable to reduce at least one of energy supply cost, CO2 (carbon dioxide) emission, and primary energy consumption.