LESSON 7.- SAVING ENERGY IN THE HOME. LESSON 7.- SAVING ENERGY IN THE HOME Activity 1.- Calculating the energy consumption in our homes 1.- This activity can be done as homework, because the students have to complete the grid with all the electrical appliances they have at home and calculate the total energy consumption in kW·h per DAY.
Nov 04, 2011 · Suitable for HA year 9s or GCSE students. This gives them practice in energy efficiency calculations.
Efficiency Problems - Displaying top 8 worksheets found for this concept.. Some of the worksheets for this concept are Work energy problem, Simple machines ima ama and efficiency work, Efficiency practice problems, Energy calculation work 2018, Skill and practice work, Chapter 8 reinforcement work mechanical advantage and, Physics work work and energy, Ima ama and efficiency work 1.
Energy Efficiency Worksheet A computer that is 87% efficient consumes 375 kWh of energy. How much useful energy does it provide? loo A television that is 83% efficient provides 4 600 J of useful energy. How much energy does it consume? An oven consumes 425 kWh of energy in order to provide 386 kWh of useful energy. What is its percent efficiency?
a Calculate the amount of mechanical energy received by the turbine in that period. b Calculate the percentage energy efficiency of this process. (In reality it would be much higher than this.) c Show what you think a Sankey diagram might look like for this process.
Mechanical efficiency, measure of the effectiveness with which a mechanical system performs. It is usually the ratio of the power delivered by a mechanical system to the power supplied to it, and, because of friction, this efficiency is always less than one.
May 24, 2000 · The total work you did = the work for one repetition times the number of repetitions that you performed. Your power output = the total work you did divided by the total time taken. For example, suppose your exercise is lifting a book which weighsabout 10 Newtons.
CALCULATION WORKSHEET: SIZING COMBUSTION AIR OPENINGS Step 1: • Enter the input ratings of all appliances in Table 1. • Total the column. • Proceed to either Part A, Part B, or Part C. • Where all air is to be taken from the outdoors, divide the total input of all gas appliances in the space by 4000.