The analysis of energy consumption in a hybrid drive system of a passenger car in real road conditions is an important factor determining its operational indicators. The article presents energy consumption analysis of a car equipped with an advanced Plug-in Hybrid Electric Drive (PHEV), driving in real road conditions on a test section of about 51 km covered in various environmental conditions and seasons. Particular attention was paid to the energy consumption resulting from the cooperation of two independent drive units, analyzed in terms of the total energy expenditure. The energy consumption obtained from fuel and energy collected from the car’s batteries for each run over the total distance of 12 500 km was summarized. The instantaneous values of energy consumption for the hybrid drive per kilometer of distance traveled in car’s real operating conditions range from 0.6 to 1.4 MJ/km, with lower values relating to the vehicle operation only with electric drive. The upper range applies to the internal combustion engine, which increases not only the energy expenditure in the TTW (Tank-to-Wheel) system, but also CO2 emissions to the environment. Based on the experimental data, the curves of total energy consumption per kilometer of the road section traveled were determined, showing a close correlation with the actual operating conditions. Obtained values were compared with homologation data from the WLTP test of the tested passenger car, where the average value of energy demand is 1.1 MJ/km and the CO2 emission is 23 g/km.
W pracy przedstawiono koncepcję i implementację systemu akwizycji i rejestracji zużycia energii elektrycznej. System został opracowany w ramach zadania badawczego pt. „Zoptymalizowanie zużycia energii elektrycznej w budynkach”1 i użyty do monitorowania 87 liczników w trzech budynkach biurowych. Umożliwia również wspomaganie analizy zebranych danych wg różnych kryteriów, a co równie istotne, umożliwia integrację danych pochodzących z liczników z innymi danymi, np. pogodowymi czy z automatyki budynku. System z powodzeniem może być użyty do przetwarzania danych nie tylko z liczników energii elektrycznej, ale również liczników innych mediów występujących w budynku, jak woda, gaz oraz ciepło i chłód. W dalszej części przedstawiono również przykładowe analizy zebranych danych.
EN
The paper presents a concept and implementation of electricity consumption acquisition and recording system. The system was built as a part of research work entitled “Optimization of electricity consumption in buildings” and used to monitor 87 electricity meters in three different buildings. It also supports the user in analysis of collected data using different criterion, and allows to integrate meters data with other types of data, e.g. recorded outside temperature and humidity, sunrise and sunset, operation modes of technological installations of the building (HVAC AHUs, VAVs, chillers, heat pumps) and room control (occupancy, lighting mode, room temperatures) and even failures in building construction, its installations or the automation. The system relies on general assumptions which allow to apply not only electricity meters, but also other media meters, e.g. water, gas, technological heat and cold. Furthermore, the paper presents example analysis performed in the buildings mentioned earlier.
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