By Chartered Institution of Building Services Engineers
Read or Download Energy Efficiency in Buildings: CIBSE Guide F PDF
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Additional resources for Energy Efficiency in Buildings: CIBSE Guide F
Sample text
Shading and high rates of ventilation should be provided in summer to prevent overheating. atrium, the more important this becomes. Windows in the atrium wall also reduce internally reflected daylight. Spaces facing into the atrium should have requirements corresponding with those of the atrium — rooms at the upper levels tend to receive plenty of light but need protection from glare while those at the base need to maximise the amount of light they receive. Other design strategies include making rooms near the base shallower, increasing their floor to ceiling heights, or successively stepping back the upper floors so that all rooms have some view of the sky.
On the other hand, in a thermally massive building, the structure would absorb heat and delay the time when conditions would become uncomfortable. However, the structure's ability to absorb heat gains depends on it being cooled down at some time before the gains occur. Occupants will be unable to anticipate this, and so will need to be educated on how to undertake manual night cooling. Once they have learned this technique, feedback (in the form of discomfort) will prompt corrective action on days when overheating is likelyInternal partitions and furniture increase the thermal response of the building.
Given an openable window or a responsive thermostat, occupants can 'feel' comfortable even though conditions are outside what might be considered normal comfort limits. For instance, the tight comfort conditions expected in air conditioned offices are somewhat contradictory to those expected in the home. It is the responsibility of the services designer (not the controls contractor) to ensure that the control 'user interfaces' are designed to encourage good use of systems by the occupants. Equally important is to ensure that simple user guidance is produced to explain the systems and the controls interfaces in order to promote good use of systems.
