Research Module 4.3 Building technologies

Active air-conditioning (A/C)-systems typically are employed whenever the heat-stress risk needs to be decreased, as these impact on the hazard, namely on the indoor climate. These A/C-systems and their performance are dependent both on indoor and outdoor conditions in a complex way. Moreover, the use of these technical means implies demand of energy (heat or/and work) and water, feeding back in a negative way on the outdoor climate, both locally and globally.
The necessity to provide sustainable low-energy A/C calls for a restrictive use of conventional systems. The alternative option of using passive cooling and ventilation techniques in modern buildings generates the risk of an indoor-climate that is not suitable for highly vulnerable persons. Active A/C-systems driven by low- temperature heat are a promising third way as sustainable resources (e.g. solar or waste heat) can be employed.

Research questions

  • Which methodologies allow for a system comparison of the multitude of A/C-systems?
  • Which A/C-systems are suitable for air-conditioning with respect to minimized heat-stress risks?
  • What are predominant substitution effects between heat, work, water, and heat-stress risks in A/C- systems?
  • How can the influence of the outdoor conditions on the energetic efficiency and feedback mechanisms of the technologies onto the climate be quantified?

Collaboration within Research Links (RL)

420a Urban climate and building energy demands
430 Simulation-based design for rooms and buildings for reducing heat-stress risks
440 Prospective active A/C-solutions and Building design

Collaboration within Research Cluster (RC)

510 From regional weather and climate to indoor climates
520 Present-day heat-stress hazards, vulnerabilities and risks
530 Effectiveness of actions for reducing heat-stress risks
540 Efficiency of actions for reducing heat-stress risk

Sub-project Members

Prof. Dr.-Ing. Felix Ziegler (TUB)
Dipl.-Ing. Oliver Buchin (TUB)
Hans Dambeck (TUB)

DFG Poster Presentation

DFG Poster Research Module 4.3