With the popularization of the inverter-driven air-conditioner and the requirement of comfort and energy saving, the operating frequency of inverter-driven air-conditioner is lower and lower, even to 1Hz. But when the air-conditioner operates under the frequency of 10Hz, a periodic sound will appear in the air-conditioner outdoor unit, which should be researched and solved. According to the exp...

BACKGROUND Forced-air warming (FAW) is widely used to prevent hypothermia during surgical procedures. The airflow from these blowers is often vented near the operative site and should be free of contaminants to minimize the risk of surgical site infection. Popular FAW blowers contain a 0.2-μm rated intake filter to reduce these risks. However, there is little evidence that the efficiency of the...

altered in many ways with the view to cut down weight and cost and to ensure simplicity. It consists of two parts : (a) the ftiotor and blower ; (b) the ether apparatus. A.?The air current is supplied by an electric motor of | h.p., driving a rotary blower, and is made to pass from the blower through an air filter, and then through a two-necked Wolff's bottle half-filled with water. The air fil...

This paper involves the design and construction of intake manifold system FSAE car including air shroud, filter, throttle body, restrictor plenum, fuel injectors, rail runners. To ensure quality, proposed is designed based on rules. The process will consist usual engineering processes computer modelling, Finite Element Analysis finally Computational Fluid Dynamics testing in order to determine ...

This study investigated the ventilation efficiency and energy performance of three strategies—an all-air system (AAS), a radiant panel with displacement (DPS), decentralized (DVS). The research analyzed indoor air quality (IAQ) in high-rise building based on building’s height, handling unit (AHU) location, infiltration rate, outdoor pollution seasonal change, filter efficiency. results indicate...

Biological inhibition of air pollution has vast advantages over physicochemical methods. One of the biggest challenges faced by researchers with traditional bio-filter in controlling Volatile Organic Compounds (VOCs) such as Benzene, Toluene, Ethylbenzene, and Xylene (BTEX) is, low degradation rate (elimination capacity) and accumulation of very high biomass. The use of metabolic uncouplers...