Measurement with hexagonal prismatic configuration: an alternative to macromeasuring

Siqueira, Natally Annunciato; Souza, Podalyro Amaral de

doi:10.1590/S1413-41522020192106

ABSTRACT

Flow measurements are essential for processes management involving fluids. In water companies, measuring inlets and outlets of water is essential to manage revenue and water losses. The water can be measured through diverse instruments with different application principles. Due to the high acquisition costs of the usual water flow meters, as well the difficulties of installation and maintenance, macro meter in Brazil is deficient. The Pitot Cole Tube is able to determine flow in pipes through the pressure differential. The main advantages are the low cost and easy installation, that may occur with the pipe under load. However, its peaces are fragile and complex. This paper propose the construction of a simple and robust instrument to measure the water flow. The prototype is build with pressure plugs installed on opposite faces of a hexagonal prism, then is evaluated of its effectiveness in water flow measurements. The results were promising given the stability obtained in the calibration coefficient.

Keywords:
flow meter; Pitot tube; velocity meter

[1] * Autor correspondente: natallysiqueira@yahoo.com.br

Vazão (m³.s^-1)	Diferencial de pressão (m)	Reynolds - velocidade média	Reynolds - velocidade máxima	Velocidade máxima (m.s^-1)	Coeficiente de calibração
0,0036	0,006	29.032	37.573	0,241	0,733
0,0042	0,008	34.579	44.380	0,284	0,742
0,0047	0,009	38.510	49.176	0,315	0,772
0,0060	0,014	48.872	61.729	0,396	0,755
0,0063	0,015	51.303	64.658	0,414	0,767
0,0064	0,015	52.431	66.016	0,423	0,777
0,0069	0,018	56.142	70.473	0,452	0,760
0,0086	0,029	69.809	86.801	0,556	0,744
0,0088	0,030	72.124	89.555	0,574	0,747
0,0094	0,035	77.035	95.385	0,611	0,743
0,0104	0,041	84.541	104.270	0,668	0,745
0,0110	0,045	89.465	110.086	0,706	0,752
0,0112	0,048	91.673	112.688	0,722	0,748
0,0124	0,057	101.332	124.054	0,795	0,750
0,0127	0,061	103.881	127.046	0,814	0,745
0,0140	0,072	114.460	139.441	0,894	0,752
0,0143	0,073	116.833	142.216	0,912	0,761
0,0146	0,078	119.422	145.242	0,931	0,753
0,0153	0,087	124.893	151.628	0,972	0,744
0,0154	0,085	125.852	152.746	0,979	0,759
0,0159	0,092	129.338	156.809	1,005	0,748
0,0189	0,131	154.491	186.031	1,193	0,743
0,0212	0,163	172.692	207.081	1,327	0,744
0,0223	0,170	181.653	217.420	1,394	0,762
0,0228	0,190	185.993	222.421	1,426	0,739

Brasil

Brasil

Measurement with hexagonal prismatic configuration: an alternative to macromeasuring

ABSTRACT