Ask Question, Ask an Expert

+61-413 786 465

info@mywordsolution.com

Ask Mechanical Engineering Expert

This assignment comprises of 2 different elements. In the first portion you need to choose or design a heat exchanger for a waste heat recovery system in cars. The second portion is a reflective journal regarding the unit, a bit similar to the SETU problemnaire however mandatory to capture the thoughts of all students.

The assignment requires to be submitted through CloudDeakin as a MS Word or pdf file.

Heat Exchanger selection/design:

Suppose you are part of a product development team which is developing a novel waste heat recovery system to make cars more efficient. One of the features of the system is to transfers wasted exhaust heat to the engine oil through a heat exchanger to decrease the friction of the oil, particularly during warm up, but as well during steady state operation at engine loads below wide open throttle. Your task is to either design or choose and source an existing heat exchanger which will be appropriate for this application. Even although most driving patterns in a car are highly dynamic you are given most operating conditions as average over the legal fuel consumption drive cycle. In the assignment you require to justify the decisions based on you engineering judgment and by applying the concepts you learned in the heat transfer unit.

The priorities for the latest product are as shown below:

1) Safe operation beneath all possible operating conditions at ambient temperatures between -30 °C and +50 °C

2) Maximum efficiency of the heat exchanger to be capable to realize the highest possible fuel economy improvement

3) The durability of 150,000km (legal necessity for emission relevant components).

4) Low weight to minimize the negative impact of additional weight towards fuel economy.

5) Small external volume to make it simple to package it in the packed and tight engine compartment.

6) Low cost.

7) Low external temperatures to avoid deterioration, aging or long term damage of close by plastic components.

8) Long term resistance against the fouling.

Operating conditions:

The given operating conditions must be considered in your selection or design procedure:

a) The test condition is the New European Drive Cycle (NEDC), the duration is 1180 sec.

b) The exhaust gas comprises of corrosive combustion products. The average water content is around 10%

c) The average exhaust temperature to the heat exchanger is 434 °C throughout the NEDC.

d) The maximum exhaust gas temperature is 625 °C throughout the NEDC.

e) The ambient air temperature is 24 °C throughout the NEDC; this doesn’t change over the test cycle.

f) The start temperature of all the engine components inclusive exhaust gas heat exchanger and the engine oil is as well 24 °C

g) The average flow rate of exhaust gas is 6.9 g/s.

h) The average oil flow rate is 10 l/min.

i) The average oil temperature is around 60 °C.

j) The average vehicle speed is 35km/h, the wind speed is simulated proportionally to the vehicle speed through a vehicle cooling fan.

k) The average exhaust heat flow throughout the NEDC is 4kW.

l) The target exhaust gas temperature subsequent to the heat exchanger is to be beneath 90 °C throughout most parts of the NEDC to be able to utilize the condensation enthalpy of the water as much as possible.

Mechanical Engineering, Engineering

  • Category:- Mechanical Engineering
  • Reference No.:- M9115

Have any Question? 


Related Questions in Mechanical Engineering

The aim of the project is to demonstrate certain aspects of

The aim of the project is to demonstrate certain aspects of engineering materials in different applications. The projects will be assessed on the basis of a written Research Report. The report should clearly show what yo ...

The aim of the project is to demonstrate certain aspects of

The aim of the project is to demonstrate certain aspects of engineering materials in different applications. The projects will be assessed on the basis of a written Research Report. The report should clearly show what yo ...

Force exerted by jet on moving cart1 you need to determine

Force Exerted By Jet On Moving cart. 1. You need to determine the velocity of water that comes out from the nozzle of this system. need the equation please formulate the equation. 2. This water will strike a small cart a ...

Assignment -q1 explain the difference between the

Assignment - Q1. Explain the difference between the metacentric height of a ship during 'Partially Afloat condition and 'Free Floating' condition; aid a sketch to support your answer. Q2. With the aid of sketches, explai ...

Life cycle assessmentfor your chosen service eg white board

LIFE CYCLE ASSESSMENT For your chosen service (e.g. white board markers), identify two alternatives of getting the service (e.g. brand A, brand B). Choose the most environmentally friendly option by conducting life cycle ...

5star questions amp answers1a define heat treatment bname

5 STAR QUESTIONS & Answers 1. A) Define Heat treatment B) Name different types of heat treatment processes C) Write any 4 purposes of Heat treatment 2. Explain various Heat treatment processes 3. A) Compare Thermo plasti ...

Problem on shaft -assuming no frictional losses a torque of

Problem on Shaft - Assuming no frictional losses, a torque of T = 750lb·in is applied through the shaft of gear F in order to drive the roller chain at point B at a constant speed. The chain sprocket has a pitch diameter ...

Mechanical engineering assignment task - solve the given

Mechanical Engineering Assignment Task - Solve the given problem. Task 1 - A spring with a one-turn loop of 40mm mean radius is formed from a round section of wire having 5 mm diameter. The straight tangential legs of th ...

Fluid mechanics assignment - viscous flow in pipesq1 as

Fluid Mechanics Assignment - Viscous Flow in Pipes Q1. As shown in the figure below, water "bubbles up" 3 in. above the exit of the vertical pipe attached to three horizontal pipe segments. The total length of the 0.75-i ...

Expansion processes of a perfect gasassignment1 attend the

Expansion Processes of a Perfect Gas Assignment: 1. Attend the laboratory class and complete the lab tests according to the supervisor's requirement. Students will not allowed to submit their report if they do not come t ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Why might a bank avoid the use of interest rate swaps even

Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate

Describe the difference between zero coupon bonds and

Describe the difference between zero coupon bonds and coupon bonds. Under what conditions will a coupon bond sell at a p

Compute the present value of an annuity of 880 per year

Compute the present value of an annuity of $ 880 per year for 16 years, given a discount rate of 6 percent per annum. As

Compute the present value of an 1150 payment made in ten

Compute the present value of an $1,150 payment made in ten years when the discount rate is 12 percent. (Do not round int

Compute the present value of an annuity of 699 per year

Compute the present value of an annuity of $ 699 per year for 19 years, given a discount rate of 6 percent per annum. As