Question

Write a MATLAB code to calculate the electricity usage in a residential home.

Note: Thing that impact the charge could be number of rooms, square feet, electric appliances. Plot the electricity charge in terms of the variability.

Answer 1

Ans: To calculate the electricity usage we use the following formula: It is for electric appliaces wise:

where

e= electricity charges

W= power of electrical appliance(in watts)(we can add power of all the devices)

H= time (in hours)

R= electricity rate (in $ or Rs. per KWh)

Matlab function for above formula:

function e= electric_usage_charge(w, h, r)

e = w*h/1000 * r;

clc; clear; close all; format bank; format compact

w = input('Enter power of your device ( in watts): ');

h = input('Enter time (in hours): ');

r = input('Enter electricity rate (in $ or Rs. per KWh): ');

e = electric_usage_charge(w, h, r)

To calculate the electricity usage we use the following formula: It is for square feet wise:

where

e= electricity charges

K = electricity consumption per sqft area of the house

A= total area of the house in sqft

R= electricity rate (in $ or Rs. per KWh)

Matlab function for above formula:

function e= electric_usage_charge(k, a, r)

e = k * a * r;

clc; clear; close all; format bank; format compact

k = input('Enter per sqft consumption ( in kilowattshour): ');

a = input('Enter area (in sqft): ');

r = input('Enter electricity rate (in $ or Rs. per KWh): ');

e = electric_usage_charge(w, h, r)

To calculate the electricity usage we use the following formula: It is for number of room wise:

where

e= electricity charges

K = electricity consumption per room of the house

N= total number of rooms in the house

R= electricity rate (in $ or Rs. per KWh)

Matlab function for above formula:

function e= electric_usage_charge(k, n, r)

e = k * n * r;

clc; clear; close all; format bank; format compact

k = input('Enter per room consumption ( in kilowattshour): ');

a = input('Enter number of rooms (in unit): ');

r = input('Enter electricity rate (in $ or Rs. per KWh): ');

e = electric_usage_charge(w, h, r)