Energy Efficiency Design Strategies

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6 Energy Efficiency Design Strategies Take notes from chapter 4 while writing chapter 3 Energy efficiency design strategies are very important to promote energy efficiency and enhance energy the energy use by commercial buildings to achieve the maximum energy savings beyond the business as usual and the ASHRAE Standard 90.1-2007 baseline. There is no single solution that can achieve a huge amount of energy savings alone, it’s an integrated design process and most of the solutions are interconnected and work in synergy to gather toward achieving more energy savings. It’s mandatory to think as an integrated process and this is the main goal of energy modeling during the design phase. Energy modeling is a great tool to show the effect of each…show more content…
In commercial buildings, the energy use intensity is mainly affected by the envelop design features, interior and exterior lighting and HVAC system. A first step that should be followed by the design team is to make sure that the building equipment are designed and sized properly according to the actual building demands including internal and external loads and the schedule of the building tenants through the year. The second interest of the design team is the building envelop, where it involve some features that has to be controlled during the design, including the roof insulation, glazing, aluminum cladding etc. Those parameters are very important in terms of heat transfer between the building and its surroundings, especially the heat gain from the sun. Decisions related to the building envelop are highly affecting the selection of HVAC system that will be used inside the building. Moreover, the ventilation system is also affected by the building envelop where it may be a heat gain or loss source to the building while flowing of the fresh air inside the building and extracting well-conditioned air from the building. It is very dependent on the climate zone of the building location. The third point of interest to reduce energy use would be the proper design of lighting and the plug…show more content…
This includes, outside temperature, wind speed, solar energy and humidity. Those variables are changing continuously and can be described based on annual or seasonal basis. The intensity and length of the heating season can be represented by the heating degree-days (HDDs). The intensity and length of the cooling season can be represented by the cooling degree-days (CDDs). The consistent intensity of the sun’s energy can be represented by the annual solar radiation. Dehumidification or removal of airborne moisture can be represented by the design dew-point temperature. The air engagement in evaporative cooling can be represented by the design wet-bulb

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