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Douglas Harris's A Guide to Energy Management in Buildings PDF

By Douglas Harris

Inefficient power use in constructions is either more and more dear and unsustainable. certainly, the relief of the strength intake of current structures is as least as vital because the layout of latest low-energy constructions. Controlling power use is something, however it is necessary to evaluate or estimate it, and to appreciate the variety of interventions for decreasing its use and the tools for assessing the associated fee effectiveness of those measures.

This accomplished consultant sincerely and concisely covers a few of the matters from a theoretical perspective and offers sensible, labored examples the place applicable, besides 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 power use in buildings
  • legislative issues.

It offers a template for instigating the strength administration strategy inside a firm, in addition to suggestions on administration concerns akin to worker motivation, and offers sensible information on the best way to hold it via. This e-book may still entice 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

Sample text

5 m2K/W. Normally in a retrofit beads are blown into the cavity to produce full cavity insulation. 3 Internal insulation supported by studding. The studding has a higher conductivity than the insulation, resulting in a higher overall U-value. 4 Partial and full cavity wall insulation In all building elements there may be thermal bridges: that is, areas of low thermal resistance connecting the inner and outer surfaces, through which heat passes relatively easily. These can significantly reduce the effectiveness of insulation in comparison with the estimated reductions in energy consumption.

Assesss effect of blinds or shading on cooling load. Doors – assess opportunities for reducing heat losses – revolving doors, air curtains, closers. Energy – assess effects of switching fuels, suppliers. Assess effects of changing boilers and/or heating system. Consider use of heat pumps/CHP. Hot water – assess effect of changing to/from point of use heaters. Ventilation – assess potential for heat recovery, changing to natural ventilation. Cooling – assess potential for improving efficiency, assess potential for natural cooling.

A circulating coil is buried in the ground, and heat exchange between the ground and the water in the coil reaches around 5W/mK. Two approaches may be used, a vertical coil or horizontal. The vertical coil system is more expensive, since to achieve sufficient heat transfer a deep hole, perhaps 80–150 m deep, is required. It tends to be used when the ground area is insufficient for a horizontal coil. A high COP can be achieved, but at an increased capital cost, and cooling capacity is about 500 W/m2 of ground area.

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