Download A Guide to Energy Management in Buildings by Douglas Harris PDF
By Douglas Harris
Inefficient power use in structures is either more and more pricey and unsustainable. certainly, the relief of the power intake of latest structures is as least as very important because the layout of recent low-energy structures. Controlling power use is something, however it is critical to evaluate or estimate it, and to appreciate the variety of interventions for lowering its use and the equipment for assessing the associated fee effectiveness of those measures.
This complete advisor truly and concisely covers a few of the concerns from a theoretical point of view and offers functional, labored examples the place acceptable, in addition to examples of ways the calculations are performed.
Topics lined include:
- where and the way strength is utilized in buildings
- energy audits
- measuring and tracking strength use
- techniques for decreasing strength use in buildings
- legislative issues.
It presents a template for instigating the strength administration strategy inside of a company, in addition to information on administration concerns akin to worker motivation, and offers sensible info on tips on how to hold it via. This publication should still attract construction managers and amenities managers and in addition to scholars of strength administration modules in FE and HE courses.
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Additional resources for A Guide to Energy Management in Buildings
Older heating, ventilation and air-conditioning (HVAC) systems often have only single-speed fans and pumps, while newer ones may include two-or three-speed plant. Since pumps and fans need to be sized to meet the maximum demand, for a substantial proportion of their life the load is only a fraction of this and energy is wasted. 8 shows the operation of a fan in a ventilation system. Where the fan curve and the system curve cross (A) is the operating point, and the power consumed by the fan is given by the area ADOG.
Other control issues may also be identified during the visit: ● ● ● ● ● ● ● Do the users have manual override for heating controls? Are there open windows immediately above working radiators? Can the users adjust light levels? Where are the light switches? Are computers switched off at night? Is there manual control of ventilation? Are fans switched on at night for night cooling? There may be opportunities (with the employer’s permission) to interview the building users or issue questionnaires.
For large, complex buildings it may be worthwhile to model the performance using proprietary software. A number of packages are available of varying complexity, allowing simple steady-state heat loss calculations or detailed hourly simulations of HVAC performance to be made. If reasonably accurate input data is available, it is possible to simulate the effect on energy consumption of changes to the building such as upgrading the fabric insulation and improving plant efficiencies. Where possible the measured or estimated energy consumption should be compared with that of other buildings having the same function.