CHE433: Considering a pump that is used to pump seawater at different depths, shown here in Figure: Thermodynamics Assignment, UTM, Malaysia

University Universiti Teknologi Malaysia (UTM)
Subject Thermodynamics

Question 1.

Considering a pump that is used to pump seawater at different depths, shown here in Figure:-

  • By using a suitable diagram and formula, explain the relationship between pressure and the depth of seawater.
  • Determine pressure in kPa at three different points shown in Figure
  • What is the pressure difference for pumping up water from point C to D?
  • Supposed that the pump is used to pump up water from point C, with heat loss to the surrounding estimated is 35 kW. What is the minimum power required to pump seawater to point D
  • In your opinion, is the density difference in seawater pumped at different depth affects the power required by the pump?
  • Assuming there is no density variation of seawater and the point of seawater intake goes lower than point C, pressure is expected to increase. Do you think that pressure variation at different seawater depths affects the power of the pump?
  • Consider a situation where a larger volume flow rate is needed at point D. What are two possible options that you could do to achieve this target?

Question 2.

Figure 1 is an example of a bicycle pump that represents the relationship of gas parameters when subjected to compression and expansion. As a person is holding the bicycle pump, with the rigorous movement of compressing and expanding, she experiences a slight warmer when the pump is compressed, but she feels slightly colder when the pump is expanded.

  • By relating this with the ideal gas equation and thermodynamic example, conduct your study about it and explain this phenomenon.
  • In a case where slower compression and expansion are done, do you think you can have the same condition as in rigorous movement? Explain your answer

Get Solution of this Assessment. Hire Experts to solve this assignment for you Before Deadline.

Question 3

Considering a non-adiabatic cylinder-shaped piston that contains air in two different cases, shown in Figure 2. The first case is in slow compression mode and the second case is in fast compression mode. Both cases have identical volume changes.

  • Both cases are considered to be a closed system where expected heat is lost to the surroundings as a result of compression. Explain this observation using any appropriate diagram or formula
  • Upon compression, it is expected that the enthalpy change in both cases to be identical. However, the work profile in both cases may be different, despite the same volume change in both cases. Justify this statement.

Question 4

A final year research student has been tasked with conducting hydrothermal carbonization (HTC) experiments to convert palm kernel shells biomass to solid hydrochar product. The student was required to design a typical HTC experiment by considering the following aspects.

  • Conduct a brief literature survey and explain using your own words what is meant by the “hydrothermal carbonization” process.
  • The experiment will be conducted in a rigid stainless-steel reactor with a volume of 100 mL. The student added 0.01kg of palm kernel shells (bulk density 740kg/m3), 30mL of liquid water at room temperature, and the rest of the reactor volume is air (air density of 1.15kg/m3). Sketch a typical hydrothermal reactor vessel and calculate the average specific volume of the reaction system.
  • The student decided to heat the reactor using an electric heater set at a constant temperature of 250°C. The targeted final temperature inside the reactor is 200°C. Calculate the rate of heat transferred across the 1.0 cm stainless-steel wall per unit area of the wall using Fourier’s law of heat conduction equation.
  • Air in the reactor was heated from room temperature of 25°C to the targeted final temperature of 200°C. Determine the change in internal energy of air per unit mass, using (a) data from the air table, (b) the functional form of the specific heat, and (c) the average specific heat value.
  • If the student decided to consider only the contribution of water in determining the pressure of the system, determine the final pressure of the water. In your opinion, will the decision taken by the student leaders to a significant error in estimating the overall pressure of the reactor?

Are You Searching Answer of this Question? Request Malaysian Writers to Write a plagiarism Free Copy for You.

Get Help By Expert

If you want to hire an assignment writer at a reasonable cost then you must get in touch with Malaysia assignment help. We have a group of expert writers who are very knowledgeable and talented they can customize a unique assignment on Thermodynamics before the deadline of your university.


Recent Solved Questions

Online Exam & Assignment Writing Services

11770+ Orders Delivered

5 Star Rating

Confidential & Secure Assignment Help For

Group Assignment Help

Online Exam -Test & Quiz

Cheapest Price Quote

Diploma & Certificate Levels

Semester & FYP Papers

Summative & Individual

GBA & Reflective

Last Minute Assistance

Sample Assignment Download

DRP412 Removable Partial Prosthodontics Assignment Example UiTM Malaysia
The field of Prosthodontics is a dental specialty that deals with the diagnosis, treatment planning and maintenance of patients who have missing or deficient teeth. A removable prosthesis can be…
Stress Among Working Women In Malaysia
Stress among working women in Malaysia is a growing issue. From juggling considerable workloads to seemingly never-ending responsibilities, the pressures on modern Malaysian women are immense. Research shows that not…


Instant Paper Writing Services by Native Malaysia Writers

Plagiarism Free Solutions
100% Original Work
24*7 Online Assistance
Native PhD Experts
Hire a Writer Now

Get Assistance for Assignments, online Exam, and Projects Writing