Explain the function of the following duct components: (57.2) Ell are elbows used to make turns in ductwork, Wye is used to split one large duct into two smaller ducts, Transition is used to change rectangular ducts from one size to another, Boot is used at the end of a round duct to allow connection of a rectangular register or grill. 8. What is the total available static pressure for ductwork for a system with the following specifications? (57.13) 9. Why should air velocity in branch ducts be limited to 600 fpm?
Simple and Fractional Distillation of Cyclohexane and Toluene Purpose: The purpose of this experiment was to become familiar with the processes of simple and fractional distillation. In this experiment a mixture of two volatile compounds, cyclohexane and toluene, were separated with the process of distillation. Distillation relies on each compound having distinct and separate boiling points. The pure products were analyzed with gas chromatography to determine the success of the distillation. Introduction: Distillation is the process of heating a liquid until it boils, then condensing and collecting the resulting hot vapors.
In partial oxidation plants with oil-fired auxiliary boilers the reduction of SO2 emissions can be achieved by using low sulphur fuel oil. From steam reforming plants with a fired primary reformer, emissions into air come from the various sources such as flue-gas from the primary reformer, vent gas from removal of carbon dioxide, breathing gas from oil buffers (seals / compressor) and also from non-continuous emissions (venting and flaring) (Ave, Evan Nieuwenhuyse, 2000). For pollution related to water, it may occur due to process condensates or due to the scrubbing of waste gases containing ammonia under normal operation. Process condensate is found in the condensation section prior to the carbon dioxide removal, of the order of one meter cube per ton of ammonia produced. Without treatment this condensate can contain up to 1kg of ammonia and 1kg methanol per m3.
Experiment 1: Pressure, Temperature, and Velocity Measurement Objective: The objective of this experiment is to determine the pressure and density of laboratory air, calibrate a pressure transducer and scannivalve, then determine the test section speed as a function of fan speed using three methods of velocity measurement. Equipment: Absolute pressure transducer, digital thermometer, pressure transducer (voltmeter), micromanometer, scannivalve, Pitot tube, low-speed wind tunnel. Part 1: Measurement of Atmospheric Pressure and Density 1. Read the barometer and wind-tunnel thermocouple. 2.
Pressure on the brake pedal pushes forward a rod connected to the pistons of the two master cylinders. The pistons begin forcing fluid into the front and rear brake lines. At the same time, the brake-pedal pushrod positions the vacuum-control valve so that it closes the vacuum port and seals off the forward half of the booster unit. The engine vacuum line then
Then we just give the sample to TA in order to get the peak. 4. Result and Discussion Steam distillation is a special type of distillation especially for temperature sensitive materials. Many organic compounds, in this case, limonene, tend to decompose at high sustained temperatures. Steam is introduced to the distillation system.
Title: Separating the Components of a Ternary Mixture Abstract: This experiment demonstrates how to separate the components in a ternary mixture via five methods, four physical and one chemical. The four physical methods are gravity filtration, evaporation, decantation and extraction; while the chemical method is by selective reaction. The components of this mixture are SiO2 (s), NaCl (s) and CaCO3 (s). Via filtration with the filtrate water the residues were NaCl(aq), SiO2 (s) and CaCO3 (s). The subsequent evaporation of the of the water from NaCl(aq) resulted in NaCl (s) which was cooled to room temperature and then weighed.
Furthermore they diffuse through plasma membranes of red blood cells and bind to the haemoglobin. By the cardiac cycle, oxygen gets transported to cells all over the body, where it’s used for aerobic respiration. One of the products during respiration is carbon dioxide. It is diffused in blood plasma and also transported by the cardiac cycle, back to the lungs. There the carbon dioxide will diffuse down the concentration gradient through endothelial cells in capillaries
Two pistons are fit into two glass cylinders filled with oil. The other thing about a hydraulic system is that it makes force multiplication fairly easy. There are also a couple problems with this simple system. What if theres a leak ? If it’s a slow leak, eventually there will not be enough fluid left to fill the brake cylinder.
This makes the temperature of the fluid in the system to change, and so does the temperature of the dividing walls between the two fluids. Examples of heat exchangers are; intercoolers, preheaters, oil coolers of heat engine, condensers, and evaporators in refrigeration units (Harriman 289). Various types of heat exchangers have been developed to meet the widely varying applications and are classified according to; nature of heat exchange process, physical state of fluid, constructional and design specs and relative direction of fluid flow. According to the nature of the heat exchange process, heat exchangers are classified as; direct and indirect contact heat exchangers. Plate and shell heat exchanger, combines both the plate heat exchangers and the shell exchangers for maximum efficiency.