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| Section | Weight | Objectives |
|---|---|---|
| EDGE Fundamentals & Framework | 20% | - Core principles of EDGE
|
| Energy Efficiency | 25% | - Energy baseline calculation
|
| Materials & Embodied Carbon | 15% | - Low-impact material selection
|
| EDGE Software & Application | 10% | - Using EDGE calculation tool
|
| Certification Process & Roles | 10% | - Role of EDGE Expert
|
| Water Efficiency | 20% | - Water baseline assessment
|
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質問 # 84
Which of the following can deliver the highest efficiency in fans and pumps?
正解：B
解説：
Efficiency in fans and pumps is a critical aspect of green building design in EDGE, particularly for reducing energy consumption in HVAC systems. The EDGE User Guide provides detailed guidance on efficiency measures for mechanical systems: "Variable speed drives (VSDs) deliver the highest efficiency in fans and pumps by adjusting the motor speed to match the actual demand, significantly reducing energy consumption compared to fixed-speed systems. VSDs can achieve energy savings of up to 30-50% in HVAC applications by avoiding the constant operation at full speed typical of single or constant speed drives" (EDGE User Guide, Section 4.2: Energy Efficiency Measures). Option D, variable speed drive, aligns with this description as the most efficient option. Option A (two speed drive) offers some efficiency by allowing two operating speeds, but it is less flexible than VSDs: "Two speed drives provide limited efficiency gains, as they cannot continuously adjust to varying loads, unlike variable speed drives" (EDGE Methodology Report Version 2.0, Section 5.1: Energy Efficiency Metrics). Option B (single speed drive) and Option C (constant speed drive) are essentially the same in this context, operating at a fixed speed regardless of demand, leading to energy waste: "Single speed or constant speed drives run at a fixed rate, resulting in higher energy consumption compared to variable speed drives, which modulate speed based on need" (EDGE User Guide, Section 4.2:
Energy Efficiency Measures). The EDGE Methodology Report further elaborates: "Variable speed drives are the most efficient option for fans and pumps in EDGE, as they minimize energy use by matching output to demand, unlike two speed or constant speed drives, which operate inefficiently under partial loads" (EDGE Methodology Report Version 2.0, Section 5.1: Energy Efficiency Metrics). This makes variable speed drives (Option D) the clear choice for delivering the highest efficiency in fans and pumps.
Reference:EDGE User Guide Version 2.1, Section 4.2: Energy Efficiency Measures; EDGE Methodology Report Version 2.0, Section 5.1: Energy Efficiency Metrics.
質問 # 85
In order for a project to complete the design certification stage requirements, the EDGE Client must do which of the following?
正解：D
質問 # 86
Other than embodied carbon, the selection of wall materials has an impact on
正解：C
解説：
Within the CBCI EDGE curriculum, wall material selection affects not only embodied carbon under the materials category but also operational energy performance. The thermal properties of wall assemblies, including U-value, thermal mass, conductivity, and insulation levels, directly influence the building's heat transfer characteristics. These factors determine how much heat enters or escapes through the building envelope, thereby affecting cooling and heating loads.
When wall materials provide improved insulation or higher thermal mass, they reduce unwanted heat gains in hot climates and heat losses in cooler climates. This results in lower energy demand for HVAC systems. In the EDGE software, envelope performance improvements are reflected in the energy calculations under the improved case scenario, contributing to overall percentage energy savings.
Window to Wall Ratio is a geometric design parameter and is not determined by wall material choice. Internal heat gains are primarily influenced by occupants, lighting, and equipment rather than wall composition. Solar Heat Gain Coefficient refers specifically to glazing performance, not opaque wall materials. Therefore, aside from embodied carbon impacts, wall material selection most directly affects the building's energy consumption.
質問 # 87
What are the benefits of using a pool cover that are recognized in EDGE?
正解：D
解説：
Pool covers are a water and energy efficiency measure in EDGE, particularly relevant for hotels with swimming pools. The EDGE User Guide outlines their benefits: "Pool covers reduce water demand by minimizing evaporation and energy demand by reducing the need for heating, as they retain heat in the pool.
In EDGE, the use of pool covers is recognized for its dual impact on reducing both water and energy consumption" (EDGE User Guide, Section 5.3: Additional Water Efficiency Measures). Option B, reduce both water and energy demand, directly aligns with this description. Option A (increase solar control and comfort) is incorrect, as pool covers are not recognized in EDGE for solar control or occupant comfort but for resource savings. Option C (require less maintenance and work from employees) and Option D (reduce chemical consumption and that of cleaning products) are potential secondary benefits but are not quantified or recognized in EDGE calculations, as confirmed by: "EDGE focuses on measurable water and energy savings from pool covers, not on maintenance or chemical use reductions" (EDGE Methodology Report Version 2.0, Section 4.3: Water Efficiency Calculations). Thus, Option B is the correct answer.
Reference: EDGE User Guide Version 2.1, Section 5.3: Additional Water Efficiency Measures; EDGE Methodology Report Version 2.0, Section 4.3: Water Efficiency Calculations.
質問 # 88
In an air conditioned building with air cooled chiller, selecting insulation in the roof will influence
正解：A
解説：
According to the CBCI EDGE curriculum, roof insulation directly affects the building's thermal performance by reducing heat transfer through the roof. In an air-conditioned building, particularly in warm climates, the roof is a major source of heat gain. By improving roof insulation, the cooling load is reduced, which lowers the electricity consumption of the air-cooled chiller system. Therefore, roof insulation clearly influences operational energy performance and contributes to energy savings in the EDGE model.
At the same time, insulation materials are accounted for in the materials category of EDGE, which evaluates embodied carbon in building materials. Adding or upgrading roof insulation changes the quantity and type of materials used in the construction, thereby influencing the embodied energy or embodied carbon calculation within the materials assessment.
Because the system described uses an air-cooled chiller, water consumption is not directly linked to the cooling process, unlike water-cooled systems with cooling towers. Therefore, roof insulation does not affect water use in this scenario.
For these reasons, roof insulation influences both energy and materials embodied energy, making option D the correct answer.
質問 # 89
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