A new building model in urban climate simulation

Indoor climate, energy demand, and the interaction between buildings and the urban climate

authored by

Jens Pfafferott, Sascha Rißmann, Björn Maronga, Matthias Sühring

Abstract

There is a strong interaction between the urban and the building energy balance. The urban climate affects the heat transfer through exterior walls, the longwave heat transfer between the building surfaces and the surroundings, the shortwave solar heat gains and the heat transport by ventilation. Considering also the internal heat gains and the heat capacity of the building structure, the energy demand for heating and cooling and the indoor thermal environment can be calculated based on the urban climate. According to the building energy concept, the energy demand results in an (anthropogenic) waste heat, this is directly transferred to the urban environment. Furthermore, the indoor temperature is re-coupled via the building envelope to the urban environment and affects indirectly the urban climate with a time shifted and damped temperature fluctuation. We developed and implemented a holistic building model for the combined calculation of indoor climate and energy demand based on an analytic solution of Fourier's equation. The building model is integrated via an urban surface model into the urban climate model.

Organisation(s)

Institute of Meteorology and Climatology

External Organisation(s)

Offenburg University

Type

Conference contribution

Pages

47-52

No. of pages

6

Publication date

2020

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Computer Science (miscellaneous)

Sustainable Development Goals

SDG 11 - Sustainable Cities and Communities, SDG 13 - Climate Action