Investigation of Energy and Environmental Potentials of a Renewable Trigeneration System in a Residential Application

Kang, Eun-Chul; Lee, Euy-Joon; Ghorab, Mohamed; Yang, Libing; Entchev, Evgueniy; Lee, Kwang-Seob; Nam-Jin, Lyu

doi:10.3390/en9090760

Cited by 15 publications

(12 citation statements)

References 38 publications

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“…Nowadays, facing the increasingly severe energy crisis and pollution issues, considerable attention is being focused on renewable power sources to figure out promising solutions [1][2][3]. However, owing to the time-varying and intermittent output features of some renewable sources, energy storage plays an indispensable role to improve the stability and energy utilization rate of the distributed energy generation system (DEGS) [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

A High-Efficiency Isolated LCLC Multi-Resonant Three-Port Bidirectional DC-DC Converter

Wang

et al. 2017

Energies

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Abstract:In this paper, an isolated multi-resonant three-port bidirectional direct current-direct current (DC-DC) converter is proposed, which is composed of three full bridges, two inductor-capacitorinductor-capacitor (LCLC) multi-resonant tanks and a three-winding transformer. The phase shift control method is employed to manage the power transmission among three ports. Relying on the appropriate parameter selection, both of the fundamental and the third order power can be delivered through the multi-element LCLC resonant tanks, and consequently, it contributes to restrained circulating energy and the desirable promoted efficiency. Besides, by adjusting the driving frequency under different load conditions, zero-voltage-switching (ZVS) characteristics of all the switches of three ports are guaranteed. Therefore, lower switching loss and higher efficiency are achieved in full load range. In order to verify the feasibility of the proposed topology, a 1.5 kW prototype is established, of which the maximum efficiencies under forward and reverse operating conditions are 96.7% and 96.9% respectively. In addition, both of the bidirectional efficiencies maintain higher than 95.5% when the power level is above 0.5 kW.

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Section: Introductionmentioning

confidence: 99%

A High-Efficiency Isolated LCLC Multi-Resonant Three-Port Bidirectional DC-DC Converter

Wang

et al. 2017

Energies

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“…Exploiting multiple energy resources and considering co-generation and integration with renewable energy systems will help towards that goal. Moreover, an open challenge is to roll-out intelligent solutions for the integration of thermal and cooling networks with the future smart electricity grids, the so-called tri-generation energy networks [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

An Innovative Control Framework for District Heating Systems: Conceptualisation and Preliminary Results

et al. 2019

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This paper presents a holistic innovative solution for the transformation of the current district heating and cooling systems to automated more efficient systems. A variety of technological advancements have been developed and integrated to support the effective energy management of future district heating and cooling sector. First, we identify and discuss the main challenges and needs that are in line with the EU objectives and policy expectations. We give an overview of the main parts that our solution consists of, with emphasis on the forecasting tools and an advanced control system that addresses unit commitment and economic load dispatch problems. The proposed control approach employs distributed and scalable optimisation algorithms for optimising the short-term operations of a district heating and cooling plant subject to technical constraints and uncertainties in the energy demand. To test the performance and validate the proposed control system, a district heating plant with multiple energy generation units and real-life heat load data were used. Simulation experiments were also used to evaluate the benefits of using thermal storage units in district heating systems. The results show that the proposed method could achieve significant cost savings when energy storage is employed. The proposed control strategy can be applied for both operating optimally district heating plants with storage and supporting investment planning for new storage units.

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“…Both show that the system is efficient in terms of energy usage, emission reduction, and economic benefits [40]. Kang et al [41] investigate the environmental and energy potential of a renewable CCHP system in a residential application under Korea and Canada weather conditions. In addition, there are two widely adopted operation strategies in CCHP systems: following electric load (FEL) and following thermal load (FTL) [3,11].…”

Section: Introductionmentioning

confidence: 99%

Multi-Objective Optimal Design of Renewable Energy Integrated CCHP System Using PICEA-g

Wang

Zhang

et al. 2018

Energies

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The integration of renewable energies into combined cooling, heating, and power (CCHP) systems has become increasingly popular in recent years. However, the optimization of renewable energies integrated CCHP (RECCHP) systems (i.e., optimal component configurations) is far from being well addressed, especially in isolated mode. This study aims to fill this research gap. A multi-objective optimization model characterizing the system reliability, system cost, and environmental sustainability is constructed. In this model, the objectives include minimization of annual total cost (ATC), carbon dioxide emission (CDE), and loss of energy supply probability (LESP). The decision variables representing the configuration of the RECCHP system include the number of photovoltaic (PV) panels and wind turbines (WTs), the tilt angle of PV panels, the height of WTs, the maximum fuel consumption, and the capacity of battery and heat storage tanks (HSTs). The multi-objective model is solved by a multi-objective evolutionary algorithm, namely, the preference-inspired coevolutionary algorithm (PICEA-g), resulting in a set of Pareto optimal (trade-off) solutions. Then, a decision-making process is demonstrated, selecting a preferred solution amongst those trade-off solutions by further considering the decision-maker preferences. Furthermore, on the optimization of the RECCHP system, operational strategies (i.e., following electric load, FEL, and following thermal load, FTL) are considered, respectively. Experimental results show that the FEL and FTL strategies lead to different optimal configurations. In general, the FTL is recommended in summer and winter, while the FEL is more suitable for spring and autumn. Compared with traditional energy systems, RECCHP has better economic and environmental advantages.

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Investigation of Energy and Environmental Potentials of a Renewable Trigeneration System in a Residential Application

Cited by 15 publications

References 38 publications

A High-Efficiency Isolated LCLC Multi-Resonant Three-Port Bidirectional DC-DC Converter

A High-Efficiency Isolated LCLC Multi-Resonant Three-Port Bidirectional DC-DC Converter

An Innovative Control Framework for District Heating Systems: Conceptualisation and Preliminary Results

Multi-Objective Optimal Design of Renewable Energy Integrated CCHP System Using PICEA-g

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