Engineering Archives | Page 5 Of 15

Fire plumes are important in fire dynamics. Using a solid fuel fire at the centre of a compartment as an example, explain the characteristics of a fire plume and generalise the axisymmetric plume model for calculating the smoke production rate and temperature along the axis of the fire plume

Assignment Details Answer ALL questions. The marks for each question are shown in square brackets “[ ]” next to the question. Classical Mechanics of Fluids (25 marks) 1.1. The Navier-Stokes equations govern fluid flow in fires and fire protection systems. It is the foundation for water flows, gas flows, and fire simulations and modelling. […]

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Date: March 7th, 2015

A pressure meter is calibrated using a Venturi meter attached to a small orifice at the bottom of a water tank. The cross-section areas of the wide and narrow parts of the Venturi meter are of 6 cm2 and 2 cm2 correspondingly. What should be the pressure drop between the wide and narrow parts of the Venturi meter, when the water level in the tank is 8.2 m? Please assume the Venturi meter is installed with pipes of cross-sectional area of 6 cm2 and the pipe finally discharges to open air at the outlet

Assignment Details Answer ALL questions. The marks for each question are shown in square brackets “[ ]” next to the question. Classical Mechanics of Fluids (25 marks) 1.1. The Navier-Stokes equations govern fluid flow in fires and fire protection systems. It is the foundation for water flows, gas flows, and fire simulations and modelling. […]

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Date: March 7th, 2015

This PhD proposal focuses on the development of 3D printer compatible chemical linkers to enable functional biomolecules (or any type of macromolecule) to be printed onto the surfaces of 3D printed objects during their production. The potential impacts of this basic technology are diverse and game‐changing, since it enables bespoke objects, with a large range of biological and chemical properties to be designed and printed. This research is broadly in the area of in vitro synthetic biology 1, whilst there are many potential applications. Two key applications are in natural product synthesis, where the proteins that synthesise a biomolecule are printed into a device for in situ deployment in biomedical devices or small scale syntheses, and semi‐biotic devices, biological devices with the transcription/translation modules that facilitate the self‐repair of their biological parts

Title of project: In vitro synthetic biology: surface modified, 3D printed molecule machines Introduction This PhD proposal focuses on the development of 3D printer compatible chemical linkers to enable functional biomolecules (or any type of macromolecule) to be printed onto the surfaces of 3D printed objects during their production. The potential impacts of this […]

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Date: March 6th, 2015

In vitro synthetic biology: surface modified, 3D printed molecule machines

Title of project: In vitro synthetic biology: surface modified, 3D printed molecule machines Introduction This PhD proposal focuses on the development of 3D printer compatible chemical linkers to enable functional biomolecules (or any type of macromolecule) to be printed onto the surfaces of 3D printed objects during their production. The potential impacts of this […]

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Date: March 6th, 2015

The retention of solution by the inert solids (oil-free liver) of the liver varies as follows (C1), whereNis kg inert solid/kg solution retained andyAis kg oil/kg solution.

resh halibut livers containing 25.7 wt % oil are to be extracted with pure ethyl ether to remove 95% of the oil in a countercurrent multistage leaching process. The feed rate is 1000 kg of fresh livers per hour. The final exit overflow solution is to contain 70 wt % oil. The retention of solution […]

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Date: March 4th, 2015

Diffusion flames are common in compartment fires. Assuming a solid fuel is ignited, discuss and analyse factors that affect the spread of the flame on the solid fuel surface. If the fuel is a gas or a liquid, how the flame will spread?

Assignment Details Answer ALL questions. The marks for each question are shown in square brackets “[ ]” next to the question. 1. Classical Mechanics of Fluids (25 marks) 1.1. The Navier-Stokes equations govern fluid flow in fires and fire protection systems. It is the foundation for water flows, gas flows, and fire simulations and modelling. Please […]

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Date: March 3rd, 2015

Fire plumes are important in fire dynamics. Using a solid fuel fire at the centre of a compartment as an example, explain the characteristics of a fire plume and generalise the axisymmetric plume model for calculating the smoke production rate and temperature along the axis of the fire plume

Assignment Details Answer ALL questions. The marks for each question are shown in square brackets “[ ]” next to the question. 1. Classical Mechanics of Fluids (25 marks) 1.1. The Navier-Stokes equations govern fluid flow in fires and fire protection systems. It is the foundation for water flows, gas flows, and fire simulations and modelling. Please […]

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Date: March 3rd, 2015

Define the Reaction Rate of a fire, then, discuss the factors that affect the reaction rate in a general secondary-order A + B → C + D chemical reaction. Give an example of such a chemical reaction of burning a gaseous fuel

Assignment Details Answer ALL questions. The marks for each question are shown in square brackets “[ ]” next to the question. 1. Classical Mechanics of Fluids (25 marks) 1.1. The Navier-Stokes equations govern fluid flow in fires and fire protection systems. It is the foundation for water flows, gas flows, and fire simulations and modelling. Please […]

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Date: March 3rd, 2015

Burning of polymethylmethacrylate (PMMA) can be described by the following chemical reaction formula. Explain the process of the burning of the PMMA (pyrolysis and reaction with oxygen) and calculate the stoichiometric fuel-air ratio. If 2.5kg of PMM is burnt, how much heat is produced?

Assignment Details Answer ALL questions. The marks for each question are shown in square brackets “[ ]” next to the question. 1. Classical Mechanics of Fluids (25 marks) 1.1. The Navier-Stokes equations govern fluid flow in fires and fire protection systems. It is the foundation for water flows, gas flows, and fire simulations and modelling. Please […]

Read full post

Date: March 3rd, 2015

A pressure meter is calibrated using a Venturi meter attached to a small orifice at the bottom of a water tank. The cross-section areas of the wide and narrow parts of the Venturi meter are of 6 cm2 and 2 cm2 correspondingly. What should be the pressure drop between the wide and narrow parts of the Venturi meter, when the water level in the tank is 8.2 m? Please assume the Venturi meter is installed with pipes of cross-sectional area of 6 cm2 and the pipe finally discharges to open air at the outlet.

Assignment Details Answer ALL questions. The marks for each question are shown in square brackets “[ ]” next to the question. 1. Classical Mechanics of Fluids (25 marks) 1.1. The Navier-Stokes equations govern fluid flow in fires and fire protection systems. It is the foundation for water flows, gas flows, and fire simulations and modelling. Please […]

Read full post

Date: March 3rd, 2015