Answer:
Heat gain and heat loss are two important factors in calculating the energy efficiency of a building. In calculations 2 and 3, the values for heat gain and heat loss were not always the same. This difference could be caused by a number of factors.
One possible reason for the discrepancy is that different methods were used to calculate heat gain and heat loss in each calculation. For example, calculation 2 may have used a different formula or set of assumptions than calculation 3, leading to different results.
Another possible cause is that there were variations in the building's construction or operation between the two calculations. For instance, changes in insulation levels or HVAC system settings could affect how much heat is gained or lost through walls, windows, and other surfaces.
Overall, it's important to carefully consider all factors that could impact heat gain and loss when performing energy efficiency calculations. By doing so, we can ensure that our buildings are as efficient as possible and minimize their impact on the environment.
Step-by-step explanation: