Optimización de un sistema de poligeneración energética para el edificio TR5 de la Universidad Politécnica de Cataluña (UPC)-Sede Terrassa

Abstract

The building sector represents around one third of the energy

related to the EU greenhouse gas (GHG) emissions, which

make it a crucial sector for achieving the EU’s energy and

environmental goals. Thus, to boost energy performance of

buildings, the EU has established a legislative framework to

foster the integration of renewable energy technologies in the

buildings. In this sense, bearing in mind the needs of retrofit

of the public buildings in Spain, and in particular in Catalunya,

this paper proposes the optimization of a polygeneration

system for the building TR5 of the Polytechnic University of

Catalunya located in Terrassa. This is carried out through a

Mixed Integer Linear Programing (MILP) model to optimize from

the economic point of view the energy system under different

energy prices scenarios. The results show the feasibility of the

PV technology in all scenarios, whereas other technologies such

as solar thermal collectors, energy storage, among others, were

not feasible in any scenario. On the other hand, the optimal

configuration changes according to the energy prices but

also the environmental impact. In particular, higher natural

gas prices leads to reduce the GHG emissions whereas higher

electricity prices not necessarily.