Master's Thesis Tanja Begemann

 

Low carbon heating for a community of offices using heat pump and thermal storage approaches

By 2050 the UK aims to reduce its greenhouse gas emissions by 80% compared to 1990. Within this work, the feasibility of heating by GSHP in conjunction with STES, specifically for the UK Midlands region, was investigated for a representative new built office building with a total floor area of 2,000 m2. An estimated design heat load of 38 W/m2 and a predicted energy demand for space heating of 50 kWh/m2 were obtained. Based on a monthly quasi-steady-state approach and actual HP data, the performance of a conceived heating system including GSHP (with horizontal ground heat exchangers) and STES was theoretically analysed. For a number of different scenarios with one, two and three design offices, HP capacities as well as STES sizes and GHG emissions were compared. Besides the technical feasibility of such a heating system, it has been shown that GHG emissions could be reduced by up to 50 % compared to conventional natural gas heating.