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| Section | Objectives |
|---|---|
| Topic 1: EDGE Software Application | - Project modeling and inputs in EDGE software - Interpreting performance results and compliance |
| Topic 2: Certification Process | - Project registration and documentation requirements - Verification and audit process |
| Topic 3: Resource Efficiency Metrics | - Water efficiency strategies and benchmarks - Energy efficiency concepts and savings calculation - Materials efficiency and embodied energy basics |
| Topic 4: EDGE Green Building Fundamentals | - Sustainable design principles - Overview of EDGE system and certification framework |
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質問 # 32
The COP of the water-cooled chiller is 6, and the cooling thermal load is 3516 W. What is the power rating of the chiller?
正解:B
解説:
The Coefficient of Performance (COP) is used in EDGE to calculate the electrical power input required for a given thermal output of a chiller. The EDGE Methodology Report defines COP as: "COP is the ratio of thermal output to electrical input, expressed as COP = Thermal Output / Electrical Input. To find the electrical input (power rating), rearrange the formula: Electrical Input = Thermal Output / COP" (EDGE Methodology Report Version 2.0, Section 5.1: Energy Efficiency Metrics). Given the COP of the water-cooled chiller as 6 and the cooling thermal load (thermal output) as 3516 W, the power rating is calculated as follows: Electrical Input = 3516 W / 6 = 586 W. Option A, 586 W, matches this calculation. Option B (3510 W) is incorrect, as it is slightly less than the thermal output, implying an unrealistic COP near 1. Option C (3522 W) is slightly above the thermal output, also incorrect. Option D (21096 W) is the result of multiplying the thermal output by the COP (3516 × 6), which is the inverse of the correct calculation. The EDGE User Guide confirms: "For a chiller with a COP of 6, the electrical input is one-sixth of the thermal output, ensuring energy efficiency is accurately assessed" (EDGE User Guide, Section 4.2: Energy Efficiency Measures). Thus, the power rating is
586 W (Option A).
Reference:EDGE Methodology Report Version 2.0, Section 5.1: Energy Efficiency Metrics; EDGE User Guide Version 2.1, Section 4.2: Energy Efficiency Measures.
質問 # 33
Which information about local climate is used for EDGE calculations?
正解:A
解説:
The CBCI EDGE curriculum explains that EDGE uses a simplified, quasi-steady-state approach to estimate building energy performance. To keep the method practical and consistent across many countries, EDGE relies on climate datasets that represent typical conditions over longer time steps rather than detailed hour-by- hour weather files used in dynamic simulation tools. In EDGE, the local climate inputs applied in the baseline and improved case calculations are based on monthly climate averages, including outdoor minimum and maximum temperatures, humidity, wind conditions, and solar radiation.
Monthly averages provide an effective balance between accuracy and usability. They capture seasonal variation that strongly influences heating and cooling loads, while avoiding the complexity and data intensity of hourly modeling. Weekly averages are not used because they add complexity without providing the standardized global consistency that EDGE aims for. Annual averages would be too coarse, because they would hide seasonal peaks and understate the impact of envelope and HVAC efficiency measures.
Therefore, the correct statement is that EDGE calculations use monthly average climate information for the key weather parameters listed.
質問 # 34
For a project in a hot and dry climate with no air-conditioning system, which of the following will NOT have an impact on the occupants' thermal comfort?
正解:A
解説:
In a hot and dry climate without air-conditioning, thermal comfort relies on passive design strategies that reduce heat gain or improve air movement. The EDGE User Guide discusses passive measures for thermal comfort: "In hot climates without air-conditioning, thermal comfort can be improved through ceiling fans, which enhance air movement, solar shading, which reduces solar heat gain, and wall and roof insulation, which minimizes heat transfer into the building" (EDGE User Guide, Section 3.5: Passive Design Strategies).
Option A (ceiling fans) improves air movement, directly impacting thermal comfort: "Ceiling fans increase air speed, enhancing evaporative cooling on occupants' skin" (EDGE Methodology Report Version 2.0, Section
5.5: Thermal Comfort Measures). Option B (solar shading) reduces heat gain, improving comfort: "External shading reduces solar radiation entering the building, lowering indoor temperatures" (EDGE User Guide, Section 3.5: Passive Design Strategies). Option C (wall and roof insulation) also enhances comfort by reducing heat transfer: "Insulation lowers the U-value of the building envelope, maintaining cooler indoor temperatures" (EDGE User Guide, Section 4.1: Insulation Measures). Option D (solar photovoltaics) generates electricity but does not directly affect thermal comfort in a building without air-conditioning: "Solar photovoltaics contribute to energy supply but do not directly influence indoor thermal comfort unless used to power cooling systems, which are absent in this scenario" (EDGE Methodology Report Version 2.0, Section
5.3: Energy Measures). Thus, solar photovoltaics (Option D) will not impact thermal comfort in this context.
Reference:EDGE User Guide Version 2.1, Section 3.5: Passive Design Strategies, Section 4.1: Insulation Measures; EDGE Methodology Report Version 2.0, Section 5.5: Thermal Comfort Measures, Section 5.3:
Energy Measures.
質問 # 35
In the EDGE certification system, who is responsible for the entire project including providing project documentation, access to the site, and the payment of audit and certification fees?
正解:B
解説:
The EDGE certification process assigns clear responsibilities to various stakeholders to ensure a smooth and accountable process. The EDGE Certification Protocol defines the role of the ProjectOwner (also referred to as the EDGE Client): "The Project Owner, as the EDGE Client, is responsible for the entire project within the EDGE certification system. This includes providing all necessary project documentation (e.g., drawings, specifications, and self-assessments), ensuring access to the site for audits, and paying the audit and certification fees as required by the Certification Provider" (EDGE Certification Protocol, Section 2.1: Roles and Responsibilities). Option C, Project Owner, directly aligns with this comprehensive responsibility. Option A (EDGE Expert) is incorrect, as the Expert's role is advisory: "The EDGE Expert provides consultancy services, assisting with documentation and measure selection, but the ultimate responsibility for submission and payment lies with the Project Owner" (EDGE Expert and Auditor Protocols, Section 2.1: Roles of EDGE Expert). Option B (EDGE Auditor) is also incorrect, as the Auditor's role is to verify compliance, not manage the project: "The EDGE Auditor conducts independent audits and is not responsible for project management, documentation provision, or fee payments" (EDGE Expert and Auditor Protocols, Section 2.2: Roles of EDGE Auditor). Option D (EDGE Certification Provider) is responsible for issuing certificates and overseeing the process, not managing the project: "The EDGE Certification Provider, such as GBCI, reviews the Auditor's recommendation and issues certificates, but does not manage the project or pay fees" (EDGE Certification Protocol, Section 3.3: Certification Decision). The EDGE User Guide further reinforces this:
"The Project Owner must coordinate all aspects of the certification process, ensuring documentation is complete, site access is granted for post-construction audits, and all fees are paid to the Certification Provider in a timely manner" (EDGE User Guide, Section 6.1: Project Preparation). This holistic responsibility makes the Project Owner (Option C) the correct answer.
Reference:EDGE Certification Protocol, Section 2.1: Roles and Responsibilities, Section 3.3: Certification Decision; EDGE Expert and Auditor Protocols, Section 2.1: Roles of EDGE Expert, Section 2.2: Roles of EDGE Auditor; EDGE User Guide Version 2.1, Section 6.1: Project Preparation.
質問 # 36
Client has provided the specification as per the image for low flow shower heads. What is the flow rate for shower heads that should have been entered to EDGE software?
正解:C
解説:
According to the CBCI EDGE curriculum, when entering plumbing fixture data into the EDGE software, the value required is the actual flow rate of the fixture in liters per minute, not the product code, price, or any other specification number shown in supplier documentation.
From the specification image, the overhead shower is described as having a single flow rate of 6 liters per minute. Other numbers visible in the specification, such as 1,315 or 3,590, represent product codes or pricing information, not water flow rates. The 4 liters per minute value in the image applies to a wall mixer component and not to the shower head itself.
In EDGE, water savings for showers are calculated based on the flow rate combined with default usage assumptions. Therefore, the correct value to input for a low-flow shower head is its rated flow in liters per minute. Since the overhead shower shown has a flow rate of 6 liters per minute, that is the value that should be entered into the EDGE software.
Accurate entry of fixture flow rates is essential because it directly affects the calculated percentage reduction in water consumption compared to the baseline case.
質問 # 37
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