Liang Zhang, Hulin Guo, Guixiang Lu, Yucheng Chen
In order to improve the performance of the old Stack Simulator, NIM built two new facilities. One is a close loop wind tunnel, which can simulate the real flue gas conditions. The wind tunnel can change the flow rate, temperature, pressure, gas composition and turbulence in the test section. It is used to calibrate the velocity measurement devices such as three-dimensional pitot tubes used in Relative Accuracy Test Audit (RATA). Another facility is a new Stack Simulator, which can simulate the flow field conditions in the real stack. It is used to evaluate the average velocity measurement of...
FLOMEKO 2022
· TC9
· 2022
· 10.21014/tc9-2022.147
· Download
Elsa Batista, Hugo Bissig, John Morgan, Anders Niemann, Annemoon Timmerman, Florestan Ogheard
This paper presents the major impacts of the work developed in EMPIR Project - MeDD II, Metrology for Drug Delivery in the reference standards used for flow rate determination of drug delivery devices and the results obtained in each work package, with a special focus on the primary standards developed by the partners using different technologies. These new primary standards were validated via an inter-laboratory comparison using two different type of flow meters and a precision syringe pump, in a range from 1500 nL/min down to 5 nL/min. This inter-comparison was performed between nine...
FLOMEKO 2022
· TC9
· 2022
· 10.21014/tc9-2022.146
· Download
Jin Song, Chao Chen, Yiping Liu, Haiyang Li
In order to obtain the most accurate and effective sampling flow rate calibration method of air sampler, several different equipments were used under two different installation conditions in this paper. According to the experimental results, the calibration results of ultrasonic flowmeter and special orifice flowmeter will be affected by the installation conditions. Consequently, while ultrasonic flowmeter and special orifice flowmeter are used to sampling flow rate calibration, it is necessary to first calibrate the two flowmeters with filter paper, and then use the corrected results to...
FLOMEKO 2022
· TC9
· 2022
· 10.21014/tc9-2022.145
· Download
K-H. Cheong, R. Doihara, N. Furuichi, M. Nakagawa, R. Karasawa, Y. Kato, K. Kageyama, T. Akasaka, Y. Onuma, T. Kato
Intravenous (IV) fluid therapy is a common medical practice that is widespread worldwide, and the method has remained unchanged for more than a century. The IV bag is suspended from an IV stand or pole, and the pressure created by gravity is used to administer the drug. However, this method inevitably reduces the mobility of patients, and may cause accidents such as falls during movement. To solve these problems faced in home care, nursing home, and hospital settings, this study aims to develop a non-hanging, non-electric-powered IV infusion pump with reasonable portability and operability....
FLOMEKO 2022
· TC9
· 2022
· 10.21014/tc9-2022.144
· Download
XING Jing-fang, QU Hong-qiang, HUI Ji, ZHENG Xue-jing, HU Fang-shu, WANG Ying-jie
This paper simulated and optimized the combustion chamber of the direct metering of the natural gas calorific value experimental platform. This material conducted a numerical simulation of methane combustion in the combustion chamber using ANSYS Fluent software, and the effects of different mixture inlet pipe length, combustion chamber diameter, and methane nozzle diameter on carbon monoxide emission concentration were studied. Aim to promote the complete combustion of methane, a more appropriate combustion chamber structure, and size were determined through carbon monoxide emission...
FLOMEKO 2022
· TC9
· 2022
· 10.21014/tc9-2022.143
· Download
X. Zheng, X. Zhipeng, J. Qing, Z. Gaoming, T. Jianbing
Ventilators are widely needed when the COVID-19 is a global outbreak, and they are used to provide mechanical ventilation for patients who are physically unable to breathe, or breathe insufficiently. A ventilator tester is an instrument used to verify and calibrate ventilation parameters of ventilators like gas flow, tidal volume, frequency. As a measuring device, the ventilator tester also needs to be calibrated periodically. And different parameters are usually calibrated with different devices. In order to improve calibration efficiency and accuracy, a novel multi-parameter calibrator for...
FLOMEKO 2022
· TC9
· 2022
· 10.21014/tc9-2022.142
· Download
R. Doihara, K.-H. Cheong, N. Furuichi
A Liquid microflow calibration rig was designed and evaluated. The developed calibration rig has a static weighing system and improved diverter valves for small flow rates. The weighing system succeeded in reducing an uncertainty due to an evaporation effect by using a detachable weighing tank. Experimental results of evaporation effect were introduced. In this study, two types of devices were introduced so that a Flying Start-and-Finish (FSF) method was implemented into the static weighing system. One of these devices is a set of diverting valves, and the other is a syringe pump with a...
FLOMEKO 2022
· TC9
· 2022
· 10.21014/tc9-2022.141
· Download
Tao Meng, Chang Zhou, Li Liu, Huichao Shi, Dongjun Li, Bo Wu
In order to meet the needs of micro-flow measurement in industrial, biological and medical fields, the National Institute of Metrology (NIM) has established a micro liquid flow facility based on dynamic weighing method, with the flow rate range of 100 nL/min ~ 150 mL/min. The facility is composed of two sets of high accuracy electronic balances as the main standard, and three Coriolis mass flowmeters and two sets of independentpipeline systems according to different flow rate ranges. It has been designed a special degassing, a filter and a pipe air exhausting system, as well as a group of...
FLOMEKO 2022
· TC9
· 2022
· 10.21014/tc9-2022.140
· Download
S. H. Lee, Y. Zeng, K.-C. Tsai, K.-H. Cheong, T. Chinarak
A pilot study was conducted to compare the microflow rate from 2 to 200 g/h in the APMP TCI project (TCFF_01_TCI2019). A syringe pump (Chemyx Nexus 3000) and Coriolis flowmeter (Bronkhorst M12) were used as the transfer standards. The comparisons were coordinated in the KRISS institute, which was also responsible for the pilot study. The volumetric flow rate was measured using a syringe pump and the measured flow rates were 33, 100, 333, 500, and 1000 μL/min and the institutes that participated in the international comparison of micro-liquid volumetric flow rates were KRISS, NMC A*STAR, and...
FLOMEKO 2022
· TC9
· 2022
· 10.21014/tc9-2022.139
· Download
Chen Fan, Du Bin, Shi Huichao, Meng Tao, Li Wenlong
In view of the design requirements of the measurement pipeline of the differential pressure micro-flow meter based on graphene membrane, the relationship between the pressure difference and the flow velocity between different pressure points in the micro-pipe was deeply studied, and the relationship between the flow rate and the pressure difference in the pipeline was established. The relational model is verified by CFD simulation calculation. The influence of parameters such as the diameter of the pipe, the length of the pressure pipe and the inlet flow rate on the measurement results were...
FLOMEKO 2022
· TC9
· 2022
· 10.21014/tc9-2022.138
· Download