By Lal Jayamaha
Confirmed thoughts and strategies for decreasing strength intake estate and facility managers can flip to Energy-Efficient development structures as a one-stop consultant to working and keeping advertisement development platforms at top potency. Designed to aid lessen power expenditures and meet environmental criteria, this cutting-edge productiveness device includes totally illustrated, real-world examples of profitable eco-friendly development initiatives that experience accomplished major, energy-saving effects. From strength administration and auditing, HVAC platforms, cooling towers, and pumping systems…to lighting fixtures, electric structures, automation, and development envelope, this specialist source takes readers step-by-step via systems for purchasing optimum functionality from each development approach. for every process, the booklet provides the newest tools for bettering efficiency…identifying promising new solutions…evaluating their feasibility…and estimating genuine discounts. accomplished and authoritative, Energy-Efficient development platforms permits development pros to: Get an in-depth realizing of the foundations of every development method opt for the most productive platforms for any nonresidential development Maximize power potency with sensible innovations and options make the most of hands-on tools for comparing feasibility and estimating reductions evaluate real-world examples of profitable eco-friendly construction initiatives inside of This Cost-Saving power advisor • power administration and effort Auditing • Air-Conditioning and valuable Chiller structures • Boilers and Heating structures • Pumping structures • Cooling Towers • Air dealing with and Distribution platforms • lighting fixtures platforms • construction electric platforms • development Automation structures • development Envelope
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Extra resources for Energy-Efficient Building Systems: Green Strategies for Operation and Maintenance
1. m. m. 1, by multiplying the hourly building cooling load by the present chiller efficiency (air-cooled). If these data are not available, a kWh consumption meter can be used to compute the electricity consumption of the chiller. Next, using manufacturers’ efficiency data, the kWh consumption for the proposed water-cooled chiller can be estimated. The difference between present (3915 kWh) and proposed (1803 kWh) total daily kWh consumption gives the daily savings (2112 kWh). Additional savings will also result from reduction in peak power demand if the peaks for power usage and cooling load coincide.
Care should be taken to ensure that all areas of the new combined system can withstand the higher static pressure imposed by the office tower chilled water distribution system. If required, heat exchangers can be installed to hydraulically isolate the office tower and retail podium systems. The most logical choice in this case would be to use the chiller plant serving the office tower to act as the combined central plant. 19. Since this plant has three 500-RT chillers, only two machines need to be operated during daytime to meet the expected combined cooling load.
The main types of compressors used are reciprocating, scroll, screw, and centrifugal. Reciprocating compressors use pistons and connecting rods driven by a crankshaft, as shown in Fig. 6. The crankshaft is driven by a motor. In open type drives, the drive motor is mounted externally and the crankshaft extends through a seal out of the crankcase. In hermetic systems, the motor and the compressor are contained in the same housing and the crankshaft and motor are in direct contact with the refrigerant.
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