Cross ventilation

According to DIN EN 12792 : 2004-01, cross ventilation is defined as free ventilation as a result of the differential pressure that is created by wind pressure on the outside of the building and where thermal lift in the building is of lesser importance. Colloquially, cross ventilation is also called draft . For free ventilation are still the gap ventilation , the window ventilation and shaft ventilation or roof top ventilation through thermals and chimney effect .

The natural ventilation of deep spaces is usually associated with difficulties. Especially in industrial construction , the given room dimensions make use of cross ventilation technology. Openings are made in the upper area of ​​the outer walls. A natural flow of air is created by pressure differences and general air movements in the outdoor area. To reinforce this, the opposite openings can be built one high and one deep. This also activates the thermal lift and increases the airflow.

This is also occasionally used in residential construction, in principle as more efficient shock ventilation.

advantages

• It can of course be ventilated. No additional operating costs for a ventilation system .
• The installation can also be carried out very easily and inexpensively afterwards. This is especially true in developing countries , in which there are sometimes poor indoor air conditions in industrial buildings .

disadvantage

• No preheating of the outside air and no heat recovery . The heat of the escaping room air is completely lost and has to be replaced by the heating.
• Any pollutants contained in the outside air can enter the interior unhindered and are not filtered out.
• undefined comfort situations

standardization

DIN in Germany

DIN 1946 [2009-05] Raumlufttechnik

• Part 6: Ventilation of apartments - General requirements, requirements for dimensioning, execution and marking, handover / acceptance (acceptance) and maintenance

DIN 18017 [1987-02] Ventilation of bathrooms and toilet rooms without outside windows

• Part 1: Single shaft systems without fans

The standard was withdrawn without replacement in 2010

DIN Technical Report 4108 [2010-09] Thermal insulation and energy saving in buildings

• Part 7: Airtightness of buildings - requirements, planning and implementation recommendations and examples
• Part 8: Avoiding Mold Growth in Residential Buildings

DIN EN for Europe

DIN EN 12792 [2004-01] Ventilation for buildings - Symbols, terminology and graphic symbols

See also

Wiktionary: cross ventilation  - explanations of meanings, word origins, synonyms, translations

Wiktionary: Joint ventilation  - explanations of meanings, word origins, synonyms, translations

Wiktionary: Window ventilation  - explanations of meanings, word origins, synonyms, translations

Wiktionary: Shaft ventilation  - explanations of meanings, word origins, synonyms, translations

Wiktionary: Roof top ventilation  - explanations of meanings, word origins, synonyms, translations

• ventilation
• Air duct
• Ventilation efficiency
• Air types

Web links

• Classification of ventilation systems - Free ventilation www.eduvinet.de
• "Cross ventilation" on baunetzwissen.de www.baunetzwissen.de
• Research report of the University of Kassel (PDF file; 411 kB) www.baunetzwissen.de
• Contribution to ventilation from a lexicon www.nibis.de
• Cross ventilation in residential buildings www.baunetz.de

swell

1. ↑ DIN in Germany cross ventilation and shaft ventilation (without fan) www.baunormenlexikon.de
2. ↑ Ventilation of bathrooms and toilet rooms without outside windows 1: Single shaft systems without fans www.baunormenlexikon.de
3. ↑ EN European standard cross ventilation and shaft ventilation (without fan) www.baunormenlexikon.de