Compare the data for the old product being used as the reference (product A) with the new product being evaluated (product B).
(This example uses assumed product data for a refrigerator.)
![[Image] Comparing the data for the old product being used as the reference (product A) with the new product being evaluated (product B).](/environment/library/glossary/hj/images/factoryx_1_01.gif)
Insert the data from each product into the formula for global warming prevention efficiency.
![[Image] Global warming prevention efficiency is a number derived by dividing the multiplication of "Product life span" and "Product function" by "Greenhouse gas emissions over life cycle".Insert the data from product A and B into the formula for their global warming prevention efficiency.](/environment/library/glossary/hj/images/factoryx_1_02.gif)
Insert the values obtained above into the formula for the factor of global warming prevention.
![[Image] Factor of global warming prevention is a number derived by dividing Global warming prevention efficiency for product of product being evaluated (product B) by Global warming prevention efficiency for efficiency of reference product (product A).](/environment/library/glossary/hj/images/factoryx_1_03.gif)
This gives a factor of global warming prevention for product B of 1.87.
