The object of research is marine diesel engine oils, which provide lubrication, cooling and separation friction surfaces. subject the process ensuring minimum mechanical losses in engines. A problematic point lubrication cylinder-piston group motion bearings lack analytical experimental studies that establish relationship between structural characteristics oils arising internal combustion degre...

The energy released in a solar flare is partitioned between thermal and nonthermal particle energy and lost to thermal conduction and radiation over a broad range of wavelengths. It is difficult to determine the conductive losses and the energy radiated at transition region temperatures during the impulsive phases of flares. We use UVCS measurements of O VI photons produced by 5 flares and subs...

By dynamically measuring solar storage&& temperature(s), the solar storage tank effectively becomes a dynamic calorimeter to measure the energy flows in a solar system. The energy flows include solar loop gain, tank losses, and potentially draw extraction. With one-channel temperature loggers storing data over several days to several weeks, this approach provides low-cost, modest-accuracy perfo...

The article aims to identify the relationship between energy efficiency and particular indicators of losses in Europe. results bibliographic analysis showed a knowledge gap Europe regarding new challenges security. For analysis, annual panel data from 32 European countries were collected 1990 2019. authors used Jarque–Bera test assess normality residuals, utilized Breush–Pagan for heteroskedast...

Hydraulic models of sewer systems are commonly used to predict the risk of urban looding. However, suitable calibration datasets in lood conditions are scarce. The quantiication of energy losses within manhole structures is a current source of uncertainty within such models. To address this gap, a scaled physical manhole model is used to quantify hydraulic energy losses during surcharging and n...