Ventilation
Energy loss due to ventilation accounts for approximately a fifth of space-heating energy demand in an older poorly insulated dwelling. In a new energy efficient house the high insulation levels mean that the proportion of space-heating demand due to ventilation increases to around a third. Equally, national air infiltration alone can result, at times, in too little ventilation. This leads to poor indoor air quality and other, more readily visible impacts such as condensation and mould on indoor surfaces. The objective of a good ventilation strategy is, therefore, to provide a balance between energy efficiency and indoor quality.
EST (March 2006) Energy efficiency ventilation in dwellings GPG 268
The guide explains why ventilation is important, the principles of ventilation, energy efficient savings, ventilation systems in dwellings, passive stack ventilation, intermittent extract fans and background ventilators, single room heat recovery ventilators, mechanical extract ventilation, whole house mechanical ventilation with heat recovery and positive input ventilation.
http://www.energysavingtrust.org.uk/download.cfm?p=1&pid=276
EST (Oct 2005) Improving air tightness in dwellings CE137/GPG224
It includes details on adequate ventilation, understanding air leakage paths; new build principles, design practice, construction practice, inspection and post construction.
http://www.energysavingtrust.org.uk/download.cfm?p=1&pid=275
EST (March 2005) Reducing overheating - a designer's guide CE129
This guide explains why overheating occurs in housing, and illustrates how designers can reduce it. It includes: the risk of overheating, design guidance, minimising internal gains, increasing thermal mass and ventilation.
http://www.energysavingtrust.org.uk/download.cfm?p=1&pid=260
The Federation of Environmental Trade Associations represents the interests of manufacturers, suppliers, installers and contractors within heating, ventilating, refrigeration and air conditioning industry.
www.feta.co.uk
