Influence analysis of building energy demands on the optimal design and performance of CCHP system by using statistical analysis

Gao, Yang; Zheng, Chunyuan; Zhai, Xiaoqiang

doi:10.1016/j.enbuild.2017.08.015

Cited by 36 publications

(4 citation statements)

References 29 publications

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“…The energy policies and management of the CCHP system also play a crucial role in the building industry. 15,16 In a statistical analysis, Yang et al 17 evaluated the effect of building energy demand on the optimization of the CCHP system for 16 buildings across 7 climate zones. They indicated that the annual total cost saving ratio (ATCSR) and primary energy saving ratio (PESR) of the following thermal load (FTL) mode are typically lower than those of the following electrical load (FEL) mode with the differences of 0.25% and 1.03%, respectively, for ATCSR and PESR.…”

Section: Introductionmentioning

confidence: 99%

The effect of materials used in office building envelope on the capacity and performance of a solar‐assisted cooling heating and power system

Heydari

Sadati

2023

Env Prog and Sustain Energy

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The calculation of heating and cooling loads to office buildings is different due to the presence of many people and also their activity at certain times of the day. In this research, a model office building is first simulated in Semnan, Iran using Design Builder software. After applying the necessary assumptions about the presence of people and building activation time, the heating and cooling loads of the base sample building are calculated with the specified envelope configuration. In the next step, some changes are applied to the thermal insulation of the envelope and the roof as well as the configuration of the windows. Then, for obtained heating and cooling loads for each case, hybrid solar‐assisted cooling heating and power (CCHP) system are designed. Thus, for different envelope configurations, the best case for the capacity of the power generation unit (PGU), the ratio of PGU‐generated energy to solar energy, and fuel consumption saving of the solar‐assisted CCHP system is determined. Results show that the use of appropriate window configuration and the suitable insulation of the walls and roof can save 24.8% of PGU capacity and 53.48% of fuel consumption in the solar‐assisted CCHP system.

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Section: Introductionmentioning

confidence: 99%

The effect of materials used in office building envelope on the capacity and performance of a solar‐assisted cooling heating and power system

Heydari

Sadati

2023

Env Prog and Sustain Energy

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“…e most popular and reasonable operation strategy for CCHP systems is following thermal load (FTL) [9] and following electrical load (FEL) [10]. A domestic CHP system which is also integrated with an electrical energy storage unit is using the FEL strategy to offer electricity and heat to the demands.…”

Section: Introductionmentioning

confidence: 99%

System Design and Optimisation Study on a Novel CCHP System Integrated with a Hybrid Energy Storage System and an ORC

Ding

Xia

et al. 2020

Complexity

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For achieving higher energy transferring efficiency from the resources to the load, the Combined Cooling, Heating, and Power (CCHP) systems have been widely researched and applied as an efficient approach. The key idea of this study is designing a novel structure of a hybrid CCHP system and evaluating its performance. In this research, there is a hybrid energy storage unit enhancing the whole system’s operation flexibility while supplying cooling, heating, and power. An ORC system is integrated into the CCHP system which takes responsibility of absorbing the low-temperature heat source for electricity generation. There are a few research studies focusing on the CCHP systems’ performance with this structure. In order to evaluate the integrated system’s performance, investigation and optimisation work has been conducted with the approaches of experimental studies and modelling simulation. The integrated system’s configuration, the model building process of several key components, the optimisation method, and the case studies are discussed and analysed in this study. The design of the integrated system and the control strategy are displayed in detail. Several sets of dynamic energy demand profiles are selected to evaluate the performance of the integrated system. The simulation study of the system supplying selected scenarios of loads is conducted. A comprehensive evaluation report indicates that the system’s efficiency during each study process differs while supplying different loads. The results include the power supplied by each component, the energy consumed by each type of load, and the efficiency improvements. It is found that the integrated system fully satisfies the selected domestic loads and various selected scenarios of loads with high efficiency. Compared to conventional power plants or CHP systems, the system efficiency enhancement comes from higher amount of recovery waste heat. Especially, the ORC system can absorb the low-temperature heat source for electricity generation. Compared to the original following electrical load (FEL) control strategy, the optimisation process brings overall efficiency improvements. The system’s overall efficiency was increased by from 3%, 3.18%, 2.85%, 17.11%, 8.89%, and 21.7% in the second case studies. Through the whole study, the main challenge lies within the design and the energy management of the integrated system.

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“…Simultaneously the CCHP system provides an effective way for solar and biomass energy utilization [7][8][9][10][11], which especially has received widespread attention in Europe [12][13][14]. The choices of primary energy sources and system capacity have a significant impact on the overall performance of the CCHP system, which has been extensively studied by researchers [15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Integrated Optimization Design of Combined Cooling, Heating, and Power System Coupled with Solar and Biomass Energy

et al. 2019

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The combined cooling, heating, and power (CCHP) systems coupled with solar energy and biomass energy can meet the needs of island or rural decentralized and small-scale integrated energy use, which have become increasingly popular in recent years. This study presents a renewable energy sources integrated combined cooling, heating, and power (RES-CCHP) system, driven by a biogas fueled internal combustion engine (ICE) and photovoltaic (PV) panels, which is different from the traditional natural gas CCHP system. Owing to the solar energy volatility and the constraint of biomass gas production, the traditional optimization design method is no longer applicable. To improve the energetic, economic and environmental performances of the system, an integrated design method with renewable energy capacity, power equipment capacity and key operating parameters as optimization variables is proposed. In addition, a case study of a small farm in Jinan, China, is conducted to verify the feasibility of the proposed RES–CCHP system structure and the corresponding optimal operation strategy. The results illustrate that the implementation of the optimal design is energy-efficient, economical and environmentally-friendly. The values of primary energy saving ratio, annual total cost saving rate and carbon emission reduction ratio are 20.94%, 11.73% and 40.79%, respectively. Finally, the influence of the volatility of renewable energy sources on the optimization method is analyzed, which shows that the RES–CCHP system and the method proposed are robust.

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Influence analysis of building energy demands on the optimal design and performance of CCHP system by using statistical analysis

Cited by 36 publications

References 29 publications

The effect of materials used in office building envelope on the capacity and performance of a solar‐assisted cooling heating and power system

The effect of materials used in office building envelope on the capacity and performance of a solar‐assisted cooling heating and power system

System Design and Optimisation Study on a Novel CCHP System Integrated with a Hybrid Energy Storage System and an ORC

Integrated Optimization Design of Combined Cooling, Heating, and Power System Coupled with Solar and Biomass Energy

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