P13 Design and control strategies for high-temperature cooling of Swedish office buildings using direct ground systems
 Högtemperatur kyla Project leader Saqib Javed
Performer Chalmers Tekniska Högskola AB

In cold countries like Sweden, direct ground systems may provide a sustainable alternative for summer cooling of office buildings. These systems, when implemented with high-temperature distribution and terminal devices provide simple, robust and efficient solutions without mechanical cooling, which have the potential to deliver a COP of 25 or more. This project proposes to investigate the potential of various air- and water-based terminal devices for direct ground cooling of office buildings under Swedish conditions, using computer modelling as well as a state-of-the-art test facility at Chalmers. The final outcome of the project will be suitable design and control strategies for high-temperature cooling of office buildings in combination with a direct ground system. The HVAC industry is very interested in the project and therefore provide 60 % of the funding. The project is also aligned with EU’s 2020 policy regarding less emissions, energy efficiency and the use of renewable energy.