AN ENERGY-SAVING OFFICE FA?ADE ADAPTABLE TO OUTSIDEWEATHER CONDITIONS IN THE NETHERLANDS

摘要

In order to reduce the environmental load (energyrnand materials) of buildings, a study was undertakenrnto develop and assess solutions for a dynamic,rnweather and daytime adaptable office fa?ade. Thernfollowing steps have been taken:rn- The total environmental load (energy andrnmaterials) of a 1990 reference fa?ade and somernvariants were determined.rn- After analyzing the thermal behavior of thernfa?ades, theoretically possible solutions to savernenergy were developed and calculated. These arernthe possibilities to change the admittance ofrnsolar radiation, to change heat insulation value,rnand to enable thermal heat storage (both nightrncooling in summer and storage of solar radiationrnin winter). The energy consumption byrnapplication of these theoretical solutions wasrncalculated.rn- Based on the most promising energy-savingrnprinciples, several design concepts with morerncommon and available materials were developedrnand their total environmental costs wererndetermined. The technical feasibility of thernconcept was also taken into account.rn- The most favorable option was worked out inrndetailed drawings and the final improvement inrnenvironmental impact The final fa?ade designrnrealizes a heating energy reduction of 66%,rnwhich comes down to a reduction inrnenvironmental costs of the energy consumptionrnof 51%, also taking cooling energy into account.rnIncluding the use of materials, the final designrnhas an environmental index of 183, indicating anrnimprovement in total environmental impact by arnfactor 1.83 compared to the 1990 referencernfa?ade.