Table of Contents
This article presents a detailed case study on energy balance calculations conducted during a commercial building retrofit. It highlights the methods used to evaluate energy consumption and identify potential improvements.
Overview of the Building
The building in question is a mid-sized commercial office space constructed in the 1990s. It covers approximately 50,000 square feet and includes multiple floors with various HVAC and lighting systems.
Energy Audit and Data Collection
An energy audit was performed to gather baseline data. Measurements included electricity and gas consumption, HVAC system performance, lighting usage, and occupancy patterns. Data was collected over a three-month period to account for seasonal variations.
Calculating Energy Balance
The energy balance calculation involved comparing energy inputs and outputs. Inputs included electricity and gas used for heating, cooling, lighting, and equipment. Outputs considered heat losses, system efficiencies, and internal heat gains. The goal was to identify discrepancies and areas for efficiency improvements.
Results and Recommendations
The analysis revealed that approximately 15% of energy was lost due to system inefficiencies. Key recommendations included upgrading HVAC equipment, installing energy-efficient lighting, and improving insulation. These measures are projected to reduce overall energy consumption by 20%.