Abstract
The development of technologies such as efficient multi-generation system, lead to realizing the benefits of integrated energy infrastructure such as electricity, natural gas, and heating networks, and thus a rapid movement toward multi-energy systems (MES). In such systems, different energy carriers and systems interact together in a synergistic way. An Energy hub (EH) can be defined as the place where the production, conversion, storage and consumption of different energy carriers takes place, is a promising option for integrated management of MES. In this work we present the hourly Schedule along a year of a building energy hub, with local generation of heat and power, energy storage and electrical and thermal loads. We include PVT systems and a CHP system in the local generation of heat and power, and a gas boiler. A battery is considered as electrical storage and a water tank as thermal storage. The system is connected to the mail grids of power and gas. The typical thermal and electrical load of a building has been considered, with a heat pump that is considered as a deferral load. The model for all the components has been developed, and a yearly simulation has been carried out in which prices of electricity and gas have been considered.
Highlights
IntroductionAn energy hub can be regarded as an input-output unit model integrating energy conversion, energy transport, energy storage and load dissipation, see Figure 1 [1]
An energy hub can be regarded as an input-output unit model integrating energy conversion, energy transport, energy storage and load dissipation, see Figure 1 [1].Electricity Supply Gas SupplyElectricity demandEnergy hub Others Supply Input side (P) Heating Load Cooling Output side (L)Proceedings 2018, 2, 1431; doi:10.3390/proceedings2231431 www.mdpi.com/journal/proceedings
It is reasonable that in [2–5], energy hub was designed by using grid electricity, natural gas or renewable energy such as solar and wind energy
Summary
An energy hub can be regarded as an input-output unit model integrating energy conversion, energy transport, energy storage and load dissipation, see Figure 1 [1]. In this formula, L explicates the energy demand and P demonstrates the power supply. The basic matrix function of energy hub:. In this expression, cth is coupling factor, which represents the conversion efficiency between the ith form energy input and the jth form energy output. In an energy hub model, there’s a lot of flexibility about input resource, such as electricity from conventional grid, renewable energy or nuclear. It is reasonable that in [2–5], energy hub was designed by using grid electricity, natural gas or renewable energy such as solar and wind energy. The energy hub output side represents customers’ demand, which can be a known quantity. The energy saving, low economic cost and higher energy efficiency have been presented at the same time through running whole system under optimum operation rules [6–8]
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