Modelling and Simulation of a Building Energy Hub

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.

Optimal Planning of Energy Hubs Considering Renewable Energy Sources and Battery Energy Storage System

“…However, only electricity and natural gas are considered in these studies so the energy cost and emission of EH are high. The solar energy and storage systems have been examined in EH planning problems that the objective function is minimizing the cost of energy and emission during the operation period shown in Barmayoon et al (2016); Wanga et al (2017) annual fee, which shown at study (Bayod-Rújula et al, 2018). The EH structure considered wind turbine (WT) and energy storages together with a mathematical formulation is developed by Pazouki and Haghifam (2016).…”

“…© 2019 Conscientia Beam. All Rights Reserved.in a typical day it is an instant and is about 0.055 $/kWh(Pazouki and Haghifam, 2016;Wanga et al, 2017;Bayod- Rújula et al, 2018).…”

Evaluating efficiency of renewable energy sources in planning micro-grids considering uncertainties

“…It is simulated with a load of 850 kW in base year and grows 5% annually. The rated power and module type of the PV and WT are discrete values and are assumed in table 1 [[32]- [36]]. Analogously, the parameters of the utility grid are also presented in table 1 with an CO 2 emission tax probably enforced by the government of 0.4cent/kg [ [38], [38]].…”

An Advanced Multicarrier Residential Energy Hub System Based on Mixed Integer Linear Programming

“…Energy demand matrix L is equal to coupling matrix C times the installed generating capacity of P and the renewable energy R. C 1 P can be developed as In (7), due to the value of η boiler,ele P boiler,ele which is equal to 0, the equation can be represented as For each EH system component, the following parameters are included: capacity, efficiency, capital cost, fixed cost, variable cost, and lifetime as reported in Table 2. The electric-ity net emission factor considered is 0.28 kg/kWh and 0.204 kg/kWh for natural gas [22].…”

“…where G STC is the irradiation under standard test conditions (STC), which is equal to 1000 W/m 2 . In a conventional PV plant of crystalline silicon, the conversion efficiency is in the range 15%-20% so 75% to 80% of the solar energy is not being used effectively [22]. Besides, the unused solar energy will heat up the panel, causing a decrease in the efficiency of the electricity generation.…”