Ventilation and Airborne Infection Control

     

TVOC concentrations measured in Belgium dwellings and their potential for DCV control

Over the last decade, TVOC sensors have been touted as an interesting alternative to CO2 and RH sensors in DCV systems. Nevertheless, there is little evidence on the nature and the profile of TVOC concentrations in modern dwellings.

Airtightness Quality Management Approaches in France: end and birth of a scheme. Previous and new schemes overview and analysis

Since 2006, the French Energy Performance regulation, named RT, has been allowing two ways to justify building airtightness: either with a measurement or with the application of a quality management approach. The quality management approach certification is managed by the French Ministry in charge of construction, for which it set up a specific expert committee to assess quality management approaches. Since 2012, the justification has been compulsory for residential buildings. This obligation led to a more systematic use of certified quality management approaches.

The Airtightness Quality Management Approach in France – Assessment after more than Five Years of Operation

Envelope airtightness is incorporated in the French Energy Performance (EP) Regulation (named “RT”) and is a key factor in the reduction of energy consumption. From 2006 until 2012, the French 2005 Energy Performance Regulation (RT, 2005) did not require justification of envelope airtightness. However, constructors could get certification for airtightness through a quality management (QM) approach, in order to build better-than-regulatory buildings.

Occupants’ behaviours in controlling blinds in UK primary schools

The environmental conditions experienced in UK schools not only influence the effectiveness of teaching and learning but also affect energy consumption and occupant behaviour plays a critical role in determining such conditions.

Short-term prediction of weather parameters using online weather forecasts

While people need to know tomorrow’s weather to decide suitable activities and precautions, so do the “intelligent” building management systems. The accuracy of the short-term prediction of the ambient conditions is particularly import for the development  of predictive control strategies.

Feasibility of controlled hybrid ventilation in mid rise apartments in the USA

Natural ventilation is generally accepted as the preferred ventilation option as it is a healthy and energy-efficient means of supplying fresh air to a building. In the USA it is seldom being applied as most climate zones are considered unsuited to apply natural ventilation, mostly due to perceived uncontrollability and very humid and hot or very cold seasons. For mid and high rise apartment buildings the option of natural ventilation is virtually disregarded because the tradition of full air conditioning is so well established.

Development of a smart sensor for controlling artificial lights and venetian blinds

Cooling loads in office buildings with large glazing facades are increase due to solar radiation penetrating the windows and over-heating the rooms. Moreover solar radiation provides natural lighting in the rooms, which might be higher than expected in the summer months and causes glare problems. In order to balance optimally between the reduction of cooling loads and natural lighting a controller can be applied to select the best combination between the position of blinds and whether the artificial lights will operate or not. 

Control of airtightness quality management scheme in France: Results, lessons and future developments

Since January 1st 2013, the French energy performance (EP) regulation requires building airtightness level to be justified to a lower-than-required value. These requirements represent an important change in the airtightness market. As a consequence, it is the State’s responsibility to accompany this market evolution and to supervise the implementation of the quality in building airtightness. French regulation allows two ways to justify the airtightness value for the building envelope.

Airtightness Quality Management scheme in France: Assessment after 5 years operation

From 2006 till 2012, the 2005 energy performance (EP) regulation (RT 2005) did not entail any obligation to justify the envelope airtightness level. As a consequence, asking for the certification of airtightness quality management approaches was a voluntary request from constructors. Thus, they might be allowed to take into account a better-than-default value into the thermal calculation. Since 2012, French 2012 EP regulation (RT 2012) requires building airtightness level to be justified, with two ways of justification.

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