Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Mechanical Engineering Expert

PART 1: ENERGY IN THE HOME, PERSONAL ENERGY USE AND HOME ENERGY EFFICIENCY.

find out your personal Annual Energy Usage for the following – list all data in kWh (KiloWatt hours):
• Space Heating (Central heating, room heaters etc. – if you share the central system, like in a flat or Hall, claculate your personal use).
• Space cooling (if you have air conditioning at home)
• Cooking (Gas cooker, microwave, sandwich toaster etc.)
• Lighting (All lights in your house/flat)
• Other domestic use (TV, Electronics, including computers, X-box etc)
• Transport (Public transport/car/motor cycle, including air travel if used)
Total ______________kWh

Convert this figure to kg of CO2 (Carbon dioxide) and Tonnes of Oil Equivalent (TOE). State clearly the basis for your calculations.
If you use the web based calculator you must check that conversions are appropriate for your location.
(If calculator does not state conversion factors, you could usually determine them by putting single inputs (e.g. 1000kW electricity) into calculator and seeing what the output is).

• TOTAL (kg of CO2)…………………
• TOTAL (TOE)……………………….
• The average UK per capita consumption is ~4TOE/annum,
• The average UAE per capita consumption is ~11TOE/annum
• Suggest why your figure might differ significantly from this.

NOW:

a) Identify one item of the energy saving equipment which you can incorporate in your house/flat/room or apartment block to replace one of your existing items mentioned above.
(Address a more sophisticated energy saving measure than low energy light bulbs)
b) find out the installed cost of item and the annual savings (energy and financial) which would result.
c) Hence estimate the simple payback period.
d) Why have you not installed this equipment? (Note: if you live on Campus or rent a room, imagine you are the owner the flat apartment block etc. when answering this problem).

PART 2 EFFICIENT USES OF ‘WASTE’ HEAT AND RENEWABLE HEAT SOURCES

1) Describe how you might recover heat from (a) the process exhaust gas stream (e.g. from an oven) and (b) the process warm water stream (e.g. from a commercial dishwasher). Discuss any aspects of streams which may influence your choice of heat recovery system.

2) Industrial dryer operates for 60 hours/week, 50 weeks/year. It exhausts 200 kW/hr of heat and value of the energy is 6p/kWh. Heat exchanger of 50% efficiency is put into exhaust stream to recover the proportion of this heat. Installed cost of the heat exchanger is £22,500. The heat exchanger pressure drop needs a 2 kW fan to overcome it, and the cost of electricity is 10p/kWh. find out simple payback period for installation, taking into account the running costs, as well as benefits.

3) Domestic air conditioning unit has the COPc of 2 Thinking of the refrigeration cycle and the inefficiencies in various components, how could you attempt to increase the COP by modifying components?

4) Industrial dryer in problem 2 currently uses the heat exchanger for heat recovery. If exhaust air is highly humid, as would be common on a dryer, there would be advantages in recovering latent heat as well as sensible heat. (Often you will find that the latent heat content is substantially greater than the sensible heat content).
Examine how you may configure the heat pump that can recover the latent heat (and sensible heat) from the exhaust air then deliver it to incoming fresh air. Is it possible now to recycle the exhaust air? If so, how would you reheat it?

5) Prime movers are being studied for powering combined heat & power (CHP) units in the home and in industry.
Sketch how heat from these prime movers (like a gas turbine, a small Diesel engine or another prime mover) can be recovered for (a) water heating, (b) providing chilled water (an outline of the appropriate refrigerating equipment is required).

Mechanical Engineering, Engineering

  • Category:- Mechanical Engineering
  • Reference No.:- M9383

Have any Question? 


Related Questions in Mechanical Engineering

Thermal energy is being added to steam at 4758 kpa and 75

Thermal energy is being added to steam at 475.8 kPa and 75% quality. Determine the amount of thermal energy to be added to create saturated steam. What is the temperature of the 75% quality steam.

Give the typical values for the output impedance and the

Give the typical values for the output impedance and the time constant of the following measuring devices: (a) Potentiometer (b) Differential transformer (c) Resolver (d) Piezoelectric accelerometer A RTD has an output i ...

Problem 1 find the indefinite integralvtintt2 dtproblem 2

Problem 1) : Find the indefinite integralv(t)=∫(t^2 )dt Problem 2) : Find the indefinite integralv(x)=∫(t^2 )dx Problem 3) : Find the indefinite integralv(x)=∫(3x^2+2/x^2 -3/x+2)dx Problem 4) : Find the general solution ...

Develop a list of your personal and educational abilities

Develop a list of your personal and educational abilities that you think need to be strengthened. Write an essay that discusses how work experience could improve these skills for you.

Conductor wall losses a rectangular waveguide is made of

Conductor (wall) losses. A rectangular waveguide is made of aluminum, which has conductivity of 3.6 x 107 S/m. The walls of the waveguide are thick and the internal dimensions are a = 25.4 mm and b = 38.1 mm. Assuming th ...

Level sensors are used in a wide variety of applications

Level sensors are used in a wide variety of applications, including soft drink bottling, food packaging, monitoring of storage vessels, mixing tanks, and pipelines. Consider the following types of level sensors, and brie ...

What are the basic lumped elements ofi a mechanical

What are the basic lumped elements of (i) A mechanical system? (ii) An electrical system? Indicate whether a distributed-parameter method is needed or a lumped-parameter model is adequate in the study of following dynami ...

An investment pays 6000 at the end of the first year 4000

An investment pays $6000 at the end of the first year, $4000 at the end of the second year, and $2000 at the end of the third year. Compute the present value of the investment if a 10% rate-of-return is required. a) $833 ...

You have received the part drawing for a typical lathe part

You have received the part drawing for a typical lathe part that will require turning, facing, grooving, boring, and threading as it is machined from a casting. See Figure 26-C. Unfortunately, you do not yet know how man ...

Compare analog control and direct digital control for

Compare analog control and direct digital control for motion control in high-speed applications of industrial manipulators. Give some advantages and disadvantages of each control method for this application

  • 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

A cola-dispensing machine is set to dispense 9 ounces of

A cola-dispensing machine is set to dispense 9 ounces of cola per cup, with a standard deviation of 1.0 ounce. The manuf

What is marketingbullwhat is marketing think back to your

What is Marketing? • "What is marketing"? Think back to your impressions before you started this class versus how you

Question -your client david smith runs a small it

QUESTION - Your client, David Smith runs a small IT consulting business specialising in computer software and techno

Inspection of a random sample of 22 aircraft showed that 15

Inspection of a random sample of 22 aircraft showed that 15 needed repairs to fix a wiring problem that might compromise

Effective hrmquestionhow can an effective hrm system help

Effective HRM Question How can an effective HRM system help facilitate the achievement of an organization's strate