CEM 무료 덤프문제 온라인 액세스

Which of the following best describes a thermally-light building?

• A.A single-story office building where the load on the heating and cooling system is proportional to the outside air (ambient) temperature
• B.A computer data center housing multiple internet server racks
• C.A building filled with manufacturing and process equipment
• D.An underground storage facility

If the temperature difference across an external wall is 20°C and the heat flow across the wall is 2.5 Watts/m², calculate the insulation value of the wall (including inside and outside air films)?

• A.R = 12 m²-°C/W
• B.R = 10 m²-°C/W
• C.R = 8 m²-°C/W
• D.R = 6 m²-°C/W
• E.R = 4 m²-°C/W

A cooling tower delivers 29°C water to a central chilled water plant. The cooling tower is capable of delivering water to the chilled-water plant with a 6°C approach temperature to the ambient wet bulb temperature. Using this information, what type of control strategy would you recommend be added to the cooling tower operation to save additional energy?

• A.Chiller demand limiting
• B.Chilled-water temperature reset
• C.Condenser-water temperature reset
• D.Static-pressure reset

For general indoor residential lighting applications, which light source can provide the most appropriate illumination with the highest efficacy?

• A.Compact fluorescent (CFL)
• B.Mercury vapor (MV)
• C.Light-emitting diode (LED)
• D.Low-pressure sodium (LPS)
• E.Incandescent

How can commissioning reduce the life-cycle cost to owners and operators?

• A.Improve the performance of energy systems
• B.Improve the satisfaction of building occupants
• C.Reduce the cost of change orders during construction
• D.Improve the effectiveness of operations and maintenance
• E.All of the above