Problems Solving literal equations is an important skill that can be applied to a number of environmental situations. This activity will explore three examples. Insulation Adding insulation to a home reduces the amount of energy used to heat and cool a home. Insulation is rated by its Heat loss is measured in British Thermal Units per hour R-value. (BTU/hr), and can be calculated using the equation H, is the surface area (ft2) of the home exposed to the outside, is the of the S R R-value insulating material (this can be researched on line or found on the package of insulation), and ΔT is the difference in the air temperature between the inside and outside of the home. Solving the equation above for the variables and enables a person to calculate heat S, R, ΔT loss and its related costs for a variety of situations. Solve the equation for S. Solve the equation for ΔT. Solve the equation for R. Research the cost of energy per BTU of a modern energy efficient oil fired furnace and then convert the equation to a cost equation. (This will be cost/hr.) As an extension, research the of various insulation options and glass options for R-value homes to compare and contrast possible energy savings. Then choose the size of a house(s) with the option to upgrade insulation or glass. What will be the energy savings?
Problems Solving literal equations is an important skill that can be applied to a number of environmental situations. This activity will explore three examples. Insulation Adding insulation to a home reduces the amount of energy used to heat and cool a home. Insulation is rated by its R-value. Heat loss is measured in British Thermal Units per hour (BTU/hr), H, and can be calculated using the equation S is the surface area (ft2) of the home exposed to the outside, R is the R-value of the insulating material (this can be researched on line or found on the package of insulation), and ΔT is the difference in the air temperature between the inside and outside of the home. Solving the equation above for the variables S, R, and ΔT enables a person to calculate heat loss and its related costs for a variety of situations. Solve the equation for S. Solve the equation for ΔT. Solve the equation for R. Research the cost of energy per BTU of a modern energy efficient oil fired furnace and then convert the equation to a cost equation. (This will be cost/hr.) As an extension, research the R-value of various insulation options and glass options for homes to compare and contrast possible energy savings. Then choose the size of a house(s) with the option to upgrade insulation or glass. What will be the energy savings?