VELUX China Office
Obtaining the good results of VELUX Langfang Office has required a conscientious effort .
The Langfang climate is very cold and dry. It is a tough climate in which to achieve low energy consumption,the building is an office space. This means that internal heat gains play a major role in defining the heating and cooling loads. In order to reach the targets, VELUX Langfang Office was equipped with a range of energy-saving technologies.
1.1 Daylight and view out: one of the objectives of the design was to harvest as much daylight as possible. At 1.5, the project scores well in this category.
1.2 Thermal environment: the building scores 2.4. As it was designed to the high European standards for indoor environment quality (class B, PPD<10%, DR<20%), the building provides comfortable temperatures. The only reason for not achieving the best score is slow response of the heating system in the morning. The radiant temperature takes longer to rise due to the heavy thermal mass of the building.
1.3 Indoor air quality: the project scores 1.9. The Air Handling Unit delivers 100% fresh air and is controlled by CO2 sensors.
3.1 Environmental loadings: the score is 2.8. This was not an initial objective of the project and the LCA (Life Cycle Analysis) was based on data from the European database. The score does not, therefore necessarily reflect conditions in the construction industry in China.
3.2 Fresh water consumption: another high score of 2. Had the building used rainwater and grey water recovery, the score might even have approached 1. But water-saving fixtures are in place and the flooring was chosen to ensure that maintenance and cleaning of surfaces required a minimum of water
VELUX Langfang Office is the headquarters of VELUX China. Located in the Heibei province, around 45 kilometres from the Chinese capital of Beijing, the building houses management, marketing and the technical department and sales division.