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Indoor Air Quality (IAQ) along with the call for energy-saving has become a hot research topic in recent years. Low ventilation rate consumes less energy but may result in poor air quality, causing health issues for occupants in the long run. Conventional ventilation strategies often result in imbalance in multiple zones served by one HVAC system considering different number of occupants in each zone...
Model Driven Development is becoming the trend of embedded software development, UML and Simulink are very important modeling languages. However, UML is a semi-formal modeling language, lacking of accurate semantics, which can't validate correctness of embedded software development. To solve this problem, this paper presents a model transformation method between UML design model and Simulink simulation...
A dynamic pressure and variable air volume (VAV) control strategy is proposed for building heating, ventilation and air-conditioning (HVAC) systems. The strategy consists in two level control, namely, pressure loop control and temperature loop control. The pressure control loop is to make sure that the air pressure at the inlet of each room is equal to a certain value while the temperature control...
According to the fourth assessment report of IPCC (Intergovernmental Panel on Climate Change), global warming owns more than 90% to human activities. And quantification of human-induced CO2 emission at fine space and time resolution has a critical need in carbon cycle and climate change research. Carbon emission from urban traffic caused by burning fossil fuels is a key source in the process of urbanization...
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