Issue link: https://www.e-digitaleditions.com/i/1476549
October/November/December 2022 I 55 Reduced Environmental Impacts Sustainable and green practices are prevalent today; many want to leave this planet a better place. Deploying sustainable intelligent building and 90W PoE strategies will aid in these efforts by deploying efficient power distribution and intelligent applications. 20% of power wasted in conversion loss Up to AC 12% to 20% 2% to 10% 15% to 20% 3% to 10% 4% to 8% 4% to 8% 4% to 8% 4% to 8% DC Storage DC Generation AC Dali DC AC DC DC AC DC AC AC DC AC DC AC DC AC DC FIGURE 4: Power wasted in conversion loss. Source: CSA Group. a certain amount of power, as much as 20 percent, is lost due to the DC conversion. In cases where solar or other renewable energy is being harvested, this begins as DC power and is converted to AC for transmission and then back to DC for applications and possible storage, which can account for up to 16 percent power loss. This can be reduced with PoE and FMP strategies. Implementing PoE and FMP in new buildings or renovation projects, in most cases, will be lower than today's design. This is dependent on the global location as rates and labor change, but in most cases, the Capex and Opex for the project will be lower. More Usable Space The impact on the structuring of the usable space within a building can be controlled via smart building and PoE applications, such as assignment of spaces for permanent in-office occupants versus those that occa- sionally work in these spaces. Electrical closets could also be reduced in size along with the reduction of integrated development framework (IDF) spaces with a decentralized deployment model. COMPARISON OF CURRENT IN-BUILDING POWER DELIVERY STRATEGIES TO THAT OF SMART BUILDINGS Alternating current (AC) power remains the most deployed power distribution strategy, which in many applications is converted to direct current (DC) to run most devices and applications. Figure 4 illustrates that