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Consider a home heating system consisting of a natural gas-flied furnace and a thermostat. In this case the process consists of the interior space to be heated. The thermostat contains both the measuring element and the controller. The furnace is either on (heating) or off. Draw a schematic diagram for this control system. On your diagram, identify the controlled variables, manipulated variables, and disturbance variables. Be suit to include several possible sources of disturbances that can affect room temperature.
A precipitate forms only when Na2SO4 is added. Which cations could be present in the unknown soluble ionic compound? Explain your answer, and write down any calculations you may have undertook in the process of answering it.
The vessel is 4 m internal diameter and 20 m long. Estimate the minimum wall thickness required to resist this pressure, for the cylindrical section and the heads. Take the design pressure as 12 bar and the maximum allowable stress for the materia..
Describe issues to be considered when developing an evacuation procedure to help ensure the safe evacuation of employees and visitors in the event of a fire Outline the benefits of undertaking regular fire drills in the workplace
For removal of a heavy metal from a waste stream by electrodeposition, the electrolyte porosity is anticipated to decrease with time as determined by Faraday's law. For a Pb2+ present at 10mg/liter, given a flow rate of 100 liters/hour, how large mus..
Radioactive copper-64 decays with a half-life of 12.8 days. a. What is the value of k in s^-1? b. A sample contains 28.0 mg 64Cu. How many decay events will be produced in the first second?
Assist with the setting of design variables necessary for sizing equipment
A strip of metallic scandium, Sc, is placed in a beaker containing concentrated nitric acid. A brown gas rapidly forms, the scandium disappears, and the resulting liquid is brown-yellow but becomes colorless when warmed. These observations best su..
A black body of finite dimension at 1000K is inserted into an infinite medium at 300 K. Given Stefan Boltzman constant as 1.8*10-5 W/m2K4, the radiative heat transfer coefficient is ------
Analysis of these publications outline the chiral ligands used and draw a catalytic cycle for one initermolecular and one intramolecular reaction - the asymmetric Heck reaction
Table: contains six-month average price data for styrene and its feedstock's ethylene and benzene for South Korea over the period Jan. 1999 to Dec. 2010. Calculate the gross margin
What is the potential difference between the starting point and the top point of the trajectory?
Compute the ratio of the number of protons anti-parallel to those that are parallel to the field
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