Energy Conservation in the Design of Multi-Storey Buildings. by Henry J. Cowan (Eds.)

By Henry J. Cowan (Eds.)

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Extra info for Energy Conservation in the Design of Multi-Storey Buildings. Papers Presented at an International Symposium Held at the University of Sydney from 1 to 3 June 1983, Sponsored by the University of Sydney, the International Association for Bridge and Structu

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It will have practically no effect on a square plan. 5 and 1:2 are taken keeping the same floor area as that of the base building. The orientation axis of the building is changed from 0 to 90 degrees in steps of 15 degrees and the corresponding fabric loads are calculated. The results are shown in Fig. 3. 0 0 N-S Fig. 3 15 30 45 ORIENTATION 60 75 90 E-W Effect of Orientation on Building Fabric Load has significant effect. 8 percent as compared to that of N-S orientation. 48 ENERGY CONSERVATION IN THE DESIGN OF MULTISTOREY BUILDINGS Wall Surface Solar Absorptance Surface colour of the external wall affects the percentage of solar radiation absorbed by the external wall and hence the heat conduction load.

Some examples of these are as follows: • In all-air systems, the utilization of 100% economizer cycles for free-cooling is common practice. • In a building utilizing local floor packaged direct expansion condenser water cooled systems, which would operate on minimum outside air at all times, the design can include the introduction of an auxiliary free-cooling coil. This coil would utilize condenser water directly when the outside wet bulb permits water cold enough to cool the air. This is another application of free-cooling.

Monday through Friday (on-peak). M. M. M. M. S. dollars if it is low tension. Similarly, there is a different charge for energy on-peak vs. off-peak and summer and winter seasons. Although the differences between on-peak and off-peak may be more dra­ matic with Consolidated Edison as contrasted to other utilities, nevertheless, the intent and the consequent implications to design of this type of rate structure are clear. Clearly, these local and national variations can have a tremendous effect upon the types of systems utilized in two identical buildings with identical operating characteristics but with different geography.

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