Design Journal Entry - Module 3

Goal 1: Building massing, orientation and programming

• Measure: window-to-wall ratio, sun’s Azimuth angle
• Targets:
• Window-to-Wall ratio > 20%
• Sun’s Azimuth angle covers the majority of windows
• The programming of the building is well organized
• Strategies:
• More windows face South
• supplemental windows on the North, West and East depending on the sun angle

Goal 2: Good building envelope design

• Measure: heating and cooling load, roof, wall and floor choice, glazing and shading strategy with daylighting, window
• Targets:
• heating and cooling load can be covered by solar panel
• optimize the choice of roof, wall, floor, window, glazing and shading to reduce the heating and cooling load
• R > 40 for the wall design
• shading overhang to reduce exceed daylight
• R > 9 for window deisgn
• Strategies:
• Choose the right material to use for the roof, wall and floor
• Based on the weather data of the site, using excel optimize the cooling and heating load

Goal 3: HVAC strategies

• Measure: heat pump as the energy source, VRF with DOAS system for HVAC
• Targets:
• heat pump system
• VRF with DOAS system
• The HVAC can fulfil the requirement of heating and cooling
• Strategies:
• When designing the building, the design should incorporate the HVAC design in programming, and envelope choices.

Goal 4: Net Zero building

• Measure: Solar Panel, the energy consumption of the building, Battery system
• Targets:
• Reduce the energy consumption of the building as much as possible
• Energy Solar Production > Energy consumption of the building
• The battery storage system can do peak load shaving
• Strategies:
• Choice of the envelope materials to reduce energy consumption
• Solar panel on the roof. If necessary, install the solar panel on the parking or somewhere else