Term Paper: 6Th Ave Condominium 6Th Avenue

Pages: 5 (1395 words)  ·  Bibliography Sources: 6  ·  Level: College Senior  ·  Topic: Energy  ·  Buy This Paper

6th Ave Condominium

6th Avenue Condominium

Electric, HVAC, & Site Logistics

Electrical Power Distribution

Energy Efficiency

The electrical power distribution system in the condominium should begin first with commitment to use energy efficiently. Designing the building and the applications within the building to require less electricity will ultimately have implication for the power distribution design. Sustainable office and mixed purpose buildings often include multiple measures to reduce energy use and to monitor energy consumption. Energy represents 30% of operating expenses in a typical office building; this is the single largest and most manageable operating expense in the provision of office space (Eichholtz, Kok and Quigley).

Not only is the inclusion of energy efficiency good for the environment, but in many cases it also makes sound financial sense. For example, a national sample of U.S. office buildings that were certified by one of the two leading certification agencies with a "green rating" received, on average, three percent higher per square foot than otherwise identical buildings and selling prices of green buildings are also roughly sixteen percent higher than non-certified buildings with similar characteristics.

The design has limited ability to control energy production externally and will be connect to the standard local grid. However, there are substantial opportunities to increase the efficiency of the buildings energy requirements. Another design feature that should be included is active lighting control in the building which reduces energy consumption; occupancy sensors monitor light fixtures and ensure that lights are off when employees are not present. These devices are especially effective in areas that receive sporadic or infrequent use, such as storage rooms and building service equipment rooms (U.S. Green Building Council). The daylight harvesting system averages a 60% reduction in power consumption during the day over standard electronic ballasts.

Using a voltage of 480 reduces line losses and improves distribution efficiency; distributed with the modular underfloor system, office branch power is at 120/280 volts. (Power distribution is sized for a minimum of 10 W/ft2 utilization on all office floors. Equipment power density is 2 W/ft2 in office areas, plus transformers) (U.S. Green Building Council). By properly designing the floor plan to include non-critical rooms (conference rooms, storage, etc.) and heating/cooling these areas with local controls, energy consumption can be reduced to 50% peak-heating-load reduction, compared to base building scenarios in some cases. Optimize Energy Performance is, by far, the most important credit in LEED certifications, based on the number of points available; there are up to 19 points are at stake on this metric which can be determined through simulation (NC-2009 EAc1). Solar water heating further is another practical option to reduce energy loads and the building should consider the possibility of integrating some solar panels on the rooftop is the sunshine is sufficient to justify it. This would reduce the building's power consumption even further.

Sustainable HVAC

The mechanic features of a building are one of the most important aspects of sustainable design. The system requirements for the mechanical systems can be greatly reduced by factors such as the building envelope, (the barrier between conditioned and unconditioned space), they may use high efficiency windows and insulation in walls, ceilings, and floors (Eichholtz, Kok and Quigley). Another strategy, passive solar building design, is often implemented in low-energy buildings. Designing the building so that windows and walls and place awnings, porches, and trees shade windows and roofs during the summer while maximizing solar gain in the winter can take substantial loads off the mechanical systems energy requirements.

Figure 1 - Energy Recovery Ventilators (ERV's) (Blanch Construction)

Advanced HVAC systems such as energy recovery ventilators are also practical and cost effective additions to the standard mechanical systems. As buildings are becoming more airtight, the need for effective ventilation systems has grown (RenewAire). The energy recovery in these systems exchange the energy contained in normal exhaust and uses it to precondition the external air before it is brought into the building. During the warmer months, another advantage to these systems is that dehumidifies it and in the warmer months it adds humidity to the air. This also reduces the need to have a mechanical humidifier or dehumidifier to control the humidity state.

Employing high-performance HVAC equipment… [END OF PREVIEW]

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