Test airflow rate

Test airflow rate The rated airflow in equipment testing. 

Test volume flow rate See Test airflow rate. 

Discharge or entry loss of a louver The reduction in airflow caused by a louver. The discharge loss coefficient is equal to the actual airflow rate divided by the theoretical airflow rate at given pressure difference across the louver. If tested with the airflow in the reverse direction, the coefficient becomes the entry loss coefficient. 

Test runs using a 150 mm diameter fluid bed coater indicated that a batch of 2 kg of material could be coated using a liquid spray rate of 10 ml/min for 50 minutes and a fluidizing gas rate of 40 scfm. It is desired to scale-up this process to a batch size of 200 kg of bed material. For the scaled up process, determine the bed size the liquid and airflow rates and the new run time. 

To improve interwell communication further, a hydraulic fracturing treatment was performed at a depth of 79 to 84 ft in well 5 to ensure the displacement and detonation of the 300-qt charge of NG1. The effectiveness of the three fracturing techniques was determined by measuring airflow rates between selected wells before and after each test. 

The equipment system scheme is essentially the same as that shown in Fig. 6.14 but with two differences (1) The orifice plates are used for metering airflow rates and (2) Since the equipment is much larger than that used in the model investigation and therefore the feeding rate is much larger, the screw feeder for wet material feeding in the quasi industrial test is not as complex as that shown in Fig. 6.14 in structure, but is a common one. 

Stability test ( Swift test Vactive oxygen method) gives an indication of the oil s resistance to oxidation during storage. The test gives the time in hours required for a sample of oil to reach a peroxide value of 100 when subjected to aeration under specified conditions of temperature and airflow rate. The period of time in hours is determined by interpolation between two peroxide value determinations, which must fall between 75 meq and 175 meq. 

Airflow rate Air volume entering into the emission test chamber per unit time. 

The oxygen-sensing properties of sensors based on the AljOj-ZrOj-YjOj eutectic composites and polycrystalline zirconia sensors with the same Y2O3 concentration in the electrolyte were also investigated [53]. All tests were carried out using nitrogen as a carrier gas. In all measurements, the airflow rate was -100 cmVmin. The oxygensensing properties of sensors based on the polycrystalline AljOj-ZrOj-YjOj solid electrolyte were shown for comparison. 

In optimising the product, both device and formulation are modified, and the normal product release tests are evaluated. Extra investigations are also carried out, such as a standard drop test to ensure that the device is robust. Other major areas for investigation are the dependence of fine particle dose on airflow rate (Srichana et al. 1998), the effect of humidity both on storage (Naini et al. 1998), Maggi et al. 1999) and in-use, drug retention within the device, the effect of orientation and electrostatics (Carter et al. 1998). 

There are generally some small leaks in the wind tunnel between the test core and the point of air mass flow rate measurement. These leaks, although small, are approximately independent of the air mass flow rate, and they represent an increasing fraction of the measured flow rate m at low air flows. A primary leak test is essential at the lowest encountered test airflow before any testing is conducted. 

Even with identical fuel and airflow rates to each of the six outer burners on the two sides of the heater, the virtual test results showed that the temperature distribution in the upper part of the heater was far from symmetric (Figure 11.15), just as observed in the actual field test. A thorough investigation of the virtual test results of the unit revealed that the asymmetric temperature distribution was caused by the unstable flow characteristics inside the heater. By design, each burner in the center of the heater was given... 

Each metal behaves in a unique way with respect to atmospheric corrosion properties, and the conclusions drawn from the nickel study cannot necessarily be drawn for other metals. However, if the same or similar corrosion products are formed on a given metal when exposed to a laboratory and a natural atmospheric environment, respectively, the results surest that the same corrosion processes are operating in both exposures. Table 4 displays examples of reported laboratory tests that have generated corrosion products similar to those seen in natural field exposures [13-18]. It appears that certain combinations of two or three corrodents at concentrations below 1 ppmv, together with a proper choice of relative humidity and airflow rate, can generate the corrosion products that are formed in natural field environments. 

FIGURE 54.4 Measured parameters for testing of the drying system (1) ambient airflow rate, temperature, and humidity (2) supply steam flow rate, temperature, and pressure (3) condensate temperature (4) process air temperature (5) feed solids moisture content and temperature (6) product solids flow rate, moisture content, and temperature and (7) exhaust airflow rate, temperature, and humidity. 

Finally, hoods should be tested once a year with devices that can measure the airflow to determine if the airflow is adequate. While you may not get involved with this testing, you should be able to locate an inspection sticker that indicates the date and airflow rate at the most recent inspection. A sticker from the inspection should indicate the height of the sash that produces 100 Q)m. This, of course, still does not guarantee that it is working properly today. If you have any doubts about the airflow, you should contact someone who can test the airflow rate. Working at a chemical hood with a faulty fan can be extremely dangerous since the protection that you think you have is absent ... 

The airflow equations presented above are based on the assumption that the soil is a spatially homogeneous porous medium with constant intrinsic permeability. However, in most sites, the vadose zone is heterogeneous. For this reason, design calculations are rarely based on previous hydraulic conductivity measurements. One of the objectives of preliminary field testing is to collect data for the reliable estimation of permeability in the contaminated zone. The field tests include measurements of air flow rates at the extraction well, which are combined with the vacuum monitoring data at several distances to obtain a more accurate estimation of air permeability at the particular site. 

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