Addressing Different Approaches for Evaluating Low-Exergy Communities

The IEA Annex 64 focusing on low-ex communities aims at the improvement of energy conversion chains on a community scale, using exergy analysis as the primary evaluation mode. Within this Annex the participants discuss important aspects and available methods for energy and exergy assessment as well as the added value of aiming for low exergy ...

Actual Energy Savings of Renovated Dwellings: the Case of Amsterdam

The existing housing stock plays a major role in the realization of the energy efficiency targets. The non-profit housing sector in the Netherlands dominates the housing market as it represents 31% of the total housing stock. In the municipality of Amsterdam, where this share is even 46%, subsidies were given to housing associations between 2011...

Introduction to an in-situ method for rapid measurement of the walls’ thermal resistance in existing buildings

Large deviations observed between the actual and theoretical gas consumption in Dutch dwellings, cast a shadow of doubt on the accuracy of the energy labeling method. In this sense, the accuracy of the calculation methods as well as the inputs being fed, fall under the question. According to several studies, the significance of wall’s thermal...

Occupant behaviour related to energy use in the residential sector: results from the Ecommon monitoring campaign

Buildings in Europe are the largest end use sector and especially residential buildings account for two thirds of this energy use. Despite the fact that building characteristics play a major role in a dwelling’s energy consumption, occupant characteristics and behaviour significantly affect this energy use as well. The Ecommon campaign monitored...

Bayesian Belief Networks (BBN) and Expert Systems for supporting model based sensor fault detection analysis of smart building systems

The Hague University in Delft uses an advanced climate control system. All sensors and actuators are monitored and deviations from the sensor data are reported daily. The building manager will have to combine the information from the sensor data in order to draw the right conclusions. In this paper, two possible solutions are described for...

How to use Building Information Systems for a transition towards Sustainable Building Operation

BIM Building Information Model or Modelling connects many different information<br/>systems from various actors during the building construction process with each<br/>other in one easily accessible and understandable model. BIM assures an effective<br/>and efficient building construction process by reducing failing cost and reduces the<br/>use...

Automatic Detection and Diagnosis of faults in Sensors used in EMS

A much occurring problem in the Energy Management Systems of existing buildings and HVAC services is that the measurements are unreliable. In this article a methodology is described which can be used to determine the presence of errors in energy monitoring, caused by faulty measurements. These errors can be detected and subsequently diagnosed....