The redesign of the exhaust system will incorporate hydronic cooling systems. This will include chilled water pumping to the chilled beams along with fan energy needed for the ventilation
systems. These topics will make use of material covered in master level courses AE 557/558, central cooling/heating systems.

    **Revision: In addition to the resizing of fans and pumps a computational fluid dynamics (CFD) study will be conducted in order to determine the feassability of the passive chilled beams with the
        diffusers in the current design. This will help determine the most effective layout of the passive chilled beams. This study will reflect the material learned in the master's level course AE559,
        compuational fluid dynamics building airflow analysis.

      Initial: In order to take a holistic approach to cutting energy use of this building, the building’s current façade will be compared to several energy
efficient alternatives. More research will be conducted in order to determine sufficient alternatives, but at the time that this report was written double skin walls and solar shading
were the front runners. Also, building orientation will be analyzed in order to determine the best possible site orientation to prevent excess heat gain and loss.

    **Revision 1: Architectural Coordination; Both method’s proposed for the ventilation system redesign will require the addition/rerouting of ductwork, addition of chilled beams, and changes in ceiling layouts. Once again, in order to address total system integration a coordination model will be made from the perspective of an architect to insure that the changes made to the building mechanical system will integrate into the current interior design of the building. This will require a 3D model of any space above and below the ceiling, where ductwork is added or rerouted. Also, a revised ceiling plan will be made for the addition of the chilled beams in method 2.This revision was made to the initial proposal so that this breadth is now better integrated with the depth topic.

   **Revision 2: Acoustical Evaluation; After analyzing the effects of each system on the architectural layout, it was determined that there is little to no change in the current design. The majority of the ductwork added in both of the redesigns either incorporated the currently installed ductwork or was smaller than the existing ductwork. Due to this fact I felt that my architectural breadth was lacking and needed something else. The ceiling layouts for the proposed chiled beam system will still be incorporated but a need for an acoustical analysis of the transfer fans was realized. In the current design, all VAV boxes located close to a space incorporated sound attenuation. The transfer fans in this design lead straight from one space into the labs and could produce significant noise in both the space where the air is being transfered from and into the labs. An acoustical analysis of the transmitted fan noise into the labs and into a typical classroom space will be conducted.

       Initial: The estimated steam heating load for ISEB is 19,000 PPH. This heating load includes domestic water heating and steam-to-steam humidifiers, therefore there will be a significant
steam load year round. In the current design, steam enters the building from the campus steam loop at 100 psi before it enters a 2-stage pressure reducing station, dropping the
pressure from 60 psi and then to 15 psi to be used in the building. Instead of wasting this steam energy by throttling it through valves, this re-design will use this energy in a steam
 powered turbine to feed electricity back into the buildings electrical system, while reducing the high pressure steam to an acceptable level (15psi) to be used in the building heating
system. This turbine generator will be integrated into the current electrical system and its impact on the current electrical system will be analyzed. Also, the electrical energy
 savings that is seen from this turbine will be analyzed.

    **Revised: Redesigning all electrical systems impacted by the mechanical redesign; The mechanical depth redesign proposed in this report will directly affect the building’s electrical system. Loads must be recalculated, wires must be resize, panel boards must be reconfigured, and any other electrical equipment that served the original mechanical equipment must be examined. This provides a great opportunity to address system integration. This breadth will also fully analyze all of the costs associated with any and all changes that must be made to the electrical system due to the changes proposed in the mechanical depth.
This revision was made to the initial proposal so that this breadth is now better integrated with the depth topic.