이동형 풍량 측정장치의 정압측정 방법에 관한 연구

Air flow measurement is the most fundamental and important task of testing, adjusting and balancing in HVAC system. In this research, for the purpose of developing a small and portable flowmeter, different methods of static pressure measurement are studied by experiment. In a new method, static pressure difference is measured by inserting a tube inside the chamber before and after the nozzles. The results are compared with those of which are measured according to ASHRAE standard. Since both results are in good agreement, inserted tube method can be used for static pressure measurement of a flowmeter. The new method will eliminate the pressure tubes that are attached outside, which results in less size and easy handling.