To decrease the ecological footprint, humans either have to adjust their lifestyles, or the large scale industries must take corporate social responsibility. This study is based on the well-developed field of energy efficiency in industries by applying technology and organizational-focused proposals. The proposals are based on three different aspects, the economic, the environmental, and the social. These three aspects combined are called the triple bottom line perspective. An original case of the study objects energy balance was determined to develop the conclusions, with the simulation program IDA ICE. The study object was GKN ePowertrain, located in Köping. Energy efficiency cases were simulated in IDA ICE to observe the change in the energy balance. The cases and interviews of the employees were the foundation of the discussion where the improvements were critically reviewed from the triple bottom line perspective. The result shown that the temperature was too high for working conditions, the ventilation system consumes a large quantity of energy, and the internal flow of information is insufficient. In conclusion, GKN ePowertrain would increase their overall value by investing in a cooling system and more efficient heat exchangers for their ventilation system. These investments would notably increase their short term value of environmental sustainability and the social aspect. Furthermore, their economic value would increase in the long term. The cooling system would improve the working environment, and a new ventilation system would increase the heat recovery and decrease the energy consumed, even more than the consumption of the cooling system. Finally, GKN should also be more distinct in their information to the employees in the building regarding energy aims and their working environment, to have a positive gain of value in all the fields.

This report formulates the boundary conditions and discretization method for conducting a simulation of heat with liquids and solids through the finite element method. It introduces the reader to the movement that is due today with optimization of heat transport and mitigation generally described as the fourth generation of district heating. It presents the scope: calculating the heat release from pipes in hydronic underfloor heating, and presents the belonging question: how does heat release from different heating pipe patterns affect the body’s heat transfer? Simulation of the work is conducted with the delimitations of using a single boundary slip condition addressing friction and only using water as pipe flow medium. It focuses on the pattern’s ability to affect the heat to the body, of which characteristically manifests a square concrete slab in the running simulations. By using different cases, it analyses how patterns using the same length of pipes emit their average heat to the covering top surface differently, both as the heating level alternates, and duration for response changes. This meanwhile they are affected by analog boundary temperature conditions.    A sensitivity analysis is done answering how the various patterns tested are affected by change of propagation speed for the flowing medium, showing that a spiral formed pattern with evenly spread piping is the least affected. The results show that the pattern with alternating pipe spacing gives the best average heat emission in the simulated cases. It also concludes that minor changes in the pattern area will have profound effect on the average transferred heat from the body’s top surface.