Based on the survey of energy consumption for new rural residential buildings in hot-summer and cold-winter area,the information of building envelop performance,function zoning of the house,and household subjective evaluation of thermal comfort were investigated.Most respondents had a positive evaluation for the performance of ventilation and lighting for their houses,however,negative evaluation for the performance of thermal resistant and shading.A typical model of new rural residential buildings in hot-summer and cold-winter cold area was established based on the results of the survey.The simulation showed that the energy consumption for air conditioning accounts for 44.3% of the total energy consumption and is the highest profile.
The study on traditional residential buildings can provide references for rural residence energy-saving and sustainable development design in China.The field measurements on outdoor and indoor air temperatures in two typical Linpan in western Sichuan were carried out firstly.The indoor thermal environment of measured residences was evaluated based on ASHRAE standard 55-2004.The results showed that the indoor thermal environment of the typical Linpan in western Sichuan was a little better than normal rural residence.Tree shading and artificial outdoor microenvironment can improve the indoor thermal environment of rural residences.
This paper presents the method of natural ventilation potential analysis of rural residential buildings based on the relationship between the building external climate and the indoor acceptable thermal environment, and the basic theory of natural ventilation. The natural ventilation potential of rural buildings was calculated in ten different areas covered five climate areas in China. Finally, the different effective factors of natural ventilation potential such as acceptable indoor air temperature, building orientation and heat gain were discussed.
Effective strategies to sterilize and disinfect the surface of sickbed should be adopted before the sickbed is moved into or out of an operation room.Ozone produced by Nano technology is used as disinfector.The experiments shows that the killing logarithm value to kill nature bacteria is between 0.54 and0.85 in short time.The effect of sterilization and disinfection for the surface of sickbed is satisfying without secondary pollution,so the new method can be used to sterilize and disinfect sickbed.
This paper reports on a laboratory experimental study on the energy and aerodynamic performance of FFUs equipped with HEPA/ULPA filters of different resistance. Seven FFU samples were tested according to laboratory testing method and their variation of performance in relation with the resistance of the HEPA/ULPA filter is described. The power usage increment-to-filter resistance increment ratio () is calculated for FFU samples. Test result shows that a small gap of filter resistance leads to an inconspicuous effect on the static pressure, aerodynamic efficiency and energy performance index of FFU, and the majority of is 0.813 to 1.019 W/Pa when the face velocity is in the range of 0.35 to 0.45m/s.
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