Category Archives: Weather

New paper on energy data mining now published

Office Building Tenants’ Electricity Use Model for Building Performance Simulations
https://www.mdpi.com/1996-1073/13/21/5541

Abstract

Large office buildings are responsible for a substantial portion of energy consumption in urban districts. However, thorough assessments regarding the Nordic countries are still lacking. In this paper we analyse the largest dataset to date for a Nordic office building, by considering a case study located in Stockholm, Sweden, that is occupied by nearly a thousand employees. Distinguishing the lighting and occupants’ appliances energy use from heating and cooling, we can estimate the impact of occupancy without any schedule data. A standard frequentist analysis is compared with Bayesian inference, and the according regression formulas are listed in tables that are easy to implement into building performance simulations (BPS). Monthly as well as seasonal correlations are addressed, showing the critical importance of occupancy. A simple method, grounded on the power drain measurements aimed at generating boundary conditions for the BPS, is also introduced; it shows how, for this type of data and number of occupants, no more complexities are needed in order to obtain reliable predictions. For an average year, we overestimate the measured cumulative consumption by only 4.7%. The model can be easily generalised to a variety of datasets.
Keywords: building simulationoffice buildingsenergy performanceenergy modellingHVACanalytical modellingstatistical analysis

A lecture on European climate

Here you can find the pdf of my traditional introductory lecture on European weather and climate, for our Master’s level course Building Physics Design I at Aalto University, Espoo (Finland):

European Climate

If you are curious about  weather and climate, and willing to go beyond the stereotypes to see evidence that

– cold weather is not strictly related to latitude

– the Alps are more rainy than Benelux

– Italy can be colder than Finland

take a look at the pdf, which contains a study I did last year. Enjoy 🙂