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W artykule przedstawione zostały wyniki symulacji numerycznej procesów wymiany ciepła i masy w ożebrowanym wymienniku wykorzystującym przepływ krzyżowy. Zaprezentowane wyniki dotyczą porównania efektywności temperaturowej dwóch typów wymienników o różnej konstrukcji, analizy wymiany ciepła na powierzchni ożebrowanej oraz wpływu różnych cech charakterystycznych wypełnienia na skuteczność chłodniczą...
Indoor thermal comfort is an important aspect of architectural environment. Based on CFD and with the use of Airpak, indoor dynamic thermal comfort is researched in this paper. The Computing Model of a common house layout in Tianjin is established. The indoor thermal comfort conditions of wind velocities at different frequencies and different temperatures are simulated. Then the influences of wind...
Based upon Fanger's thermal comfort model, the numerical simulation was adopted to predict air flow pattern and human thermal comfort environment. The numerical modeling was used to research indoor thermal comfort environment on different air distributions in summer, numerical simulation results provide indoor velocity, temperature and PMV index distributions. Then, a laboratory experimental measurement...
Indoor natural wind environments, annual natural temperature distributions and annual energy consumptions under two different opening areas of the glass curtain wall are studied for an airport terminal building in order to investigate the potential of using natural ventilation. The numerical simulation results show that: when the opening ratio of the glass curtain wall is increased from 10% to 30%,...
In transitional season, using mechanical ventilation can significantly reduce the air-conditioning energy consumption in large space building. In this paper, based on heat balance calculation, a nomograph about lowering switch point of a hall was drawn under different conditions such as different load factor, different outdoor and indoor temperature, and different ventilation rate. Under the load...
Energy consumption of HVAC (heating ventilation and air conditioning) system in large space building is normally higher than the energy consumption in small space building, and its indoor air flow field is also more complex than that in small space building. To study the air flow mode and the indoor air flow fields in large space is of great significance to the energy conservation of AC systems and...
The decorative material in automobile compartment sends out Benzene to cause the harm for health of the crew member, studies low of Benzene transportation in automobile compartment is precondition for formulating the control measures. In the present study we uses the multi-component model to numerical simulate status that decorative material on the chair sending out benzene, and analyze different...
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