U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Author "Shengwei Wang" Remove constraint Author: "Shengwei Wang"
Start Over

Search

89  Search Results

« Previous | 1 - 20 of 89 |
Number of results to display per page

Search Results

1. Energy flexibility quantification of grid-responsive buildings: Energy flexibility index and assessment of their effectiveness for applications

Author:
Shengwei Wang,   et al.   ; Hong Tang;     Show all 2 Author
Source:
Energy 2021 v.221 pp. 119756
ISSN:
0360-5442
Subject:
case studies; electricity; energy; markets; systems engineering
Abstract:
... The demand side is increasingly expected to provide energy flexibility for power grid economy and reliability. Buildings have various flexibility sources that can be effectively utilized for such purposes. According to different requirements of demand responses to power grid on response duration, response direction and response speed (within seconds, minutes, or even longer timescales), building e ...
DOI:
10.1016/j.energy.2021.119756

2. A model-based predictive dispatch strategy for unlocking and optimizing the building energy flexibilities of multiple resources in electricity markets of multiple services

Author:
Shengwei Wang,   et al.   ; Hong Tang;     Show all 2 Author
Source:
Applied energy 2022 v.305 pp. 117889
ISSN:
0306-2619
Subject:
batteries; electricity; energy efficiency; markets
Abstract:
... In recent years, demand side measures have been increasingly considered to provide flexibility services in different timescales (seconds, minutes, or longer timescale) and thereby improve the reliability and overall energy efficiency of power systems. However, the existing studies about multiple grid flexibility services only focus on the generation or storage resources, without considering the va ...
DOI:
10.1016/j.apenergy.2021.117889

3. Comparative assessment of alternative MPC strategies using real meteorological data and their enhancement for optimal utilization of flexibility-resources in buildings

Author:
Shengwei Wang,   et al.   ; Hangxin Li;     Show all 2 Author
Source:
Energy 2022 v.244 pp. 122693
ISSN:
0360-5442
Subject:
batteries; energy; meteorological data; power generation; solar energy; winter
Abstract:
... Model predictive control (MPC) method shows superiority in enhancing system performance. But its actual performance in operation is hampered by forecast uncertainties. Different methods have been proposed to mitigate the impacts of these uncertainties, such as shrinking horizon MPC (SHMPC) and stochastic MPC (SMPC). However, the year-round performance of these methods has rarely been investigated, ...
DOI:
10.1016/j.energy.2021.122693

4. A fully distributed optimal control approach for multi-zone dedicated outdoor air systems to be implemented in IoT-enabled building automation networks

Author:
Shengwei Wang,   et al.   ; Wenzhuo Li;     Show all 2 Author
Source:
Applied energy 2022 v.308 pp. 118408
ISSN:
0306-2619
Subject:
air; algorithms; automation; energy; heat; topology
Abstract:
... For heating, ventilation and air-conditioning (HVAC) systems, centralized optimal control approaches are widely investigated, while hierarchical distributed optimal control approaches are of increasing attention. Using both approaches, the central station and the coordinating agent play critical roles, resulting in low robustness. A novel fully distributed approach may offer higher robustness, but ...
DOI:
10.1016/j.apenergy.2021.118408

5. Two-time-scale coordinated optimal control of building energy systems for demand response considering forecast uncertainties

Author:
Shengwei Wang,   et al.   ; Hangxin Li;     Show all 2 Author
Source:
Energy 2022 v.253 pp. 124204
ISSN:
0360-5442
Subject:
batteries; carbon; energy; meteorological data; China
Abstract:
... Predictive scheduling is essentially needed to optimize energy dispatch of building energy systems for demand response, as it can maximize the benefits considering future conditions. However, the optimized demand response probably cannot be achieved and energy demands probably cannot be fully satisfied in operation due to the large discrepancy between the predicted and actual conditions. Generic a ...
DOI:
10.1016/j.energy.2022.124204

6. A real-time optimal control strategy for multi-zone VAV air-conditioning systems adopting a multi-agent based distributed optimization method

Author:
Shengwei Wang,   et al.   ; Wenzhuo Li; Choongwan Koo;     Show all 3 Authors
Source:
Applied energy 2021 v.287 pp. 116605
ISSN:
0306-2619
Subject:
air; air quality; energy; mathematics; system optimization; temperature
Abstract:
... Determining the proper trade-off among thermal comfort, Indoor Air Quality (IAQ) and energy use is important for optimal control of air-conditioning systems. The number of optimization variables increases as systems become increasingly complex, as with multi-zone VAV (Variable Air Volume) air-conditioning systems, leading to large-scale mathematics programming challenges and inconveniences in the ...
DOI:
10.1016/j.apenergy.2021.116605

7. An online robust sequencing control strategy for identical chillers using a probabilistic approach concerning flow measurement uncertainties

Author:
Shengwei Wang,   et al.   ; Shaobo Sun; Kui Shan;     Show all 3 Authors
Source:
Applied energy 2022 v.317 pp. 119198
ISSN:
0306-2619
Subject:
Bayesian theory; Markov chain; decision making; energy balance; energy efficiency; models; probability analysis; uncertainty; water flow
Abstract:
... Chiller sequencing control is crucial to the reliable and energy-efficient operation of multiple-chiller plants. It should not only ensure an adequate supply of cooling capacity for buildings, but also make the chillers work efficiently. The measurement uncertainties cannot be avoided and have significant negative effects on the chiller sequencing control. To cope with the challenges and uncertain ...
DOI:
10.1016/j.apenergy.2022.119198

8. Realisation of a coastal zero-emission office building with the support of hybrid ocean thermal, floating photovoltaics, and tidal stream generators

Author:
Shengwei Wang,   et al.   ; Shijie Zhou; Sunliang Cao;     Show all 3 Authors
Source:
Energy conversion and management 2022 v.253 pp. 115135
ISSN:
0196-8904
Subject:
administrative management; batteries; carbon; carbon dioxide; computer simulation; economic feasibility; energy conversion; environmental performance; solar energy; streams; zero emissions; China
Abstract:
... Buildings currently account for a large proportion of the world's energy consumption and produce large amounts of carbon emissions. Meanwhile, multiple scientific gaps remain in academia on the use of ocean energy technologies to realise coastal zero-energy buildings. Based on these circumstances, this paper proposes a hybrid system comprising a sea-sourced cooling system, floating solar photovolt ...
DOI:
10.1016/j.enconman.2021.115135

9. Study on the immobile water of saturated compacted clay-rich materials by oil seepage

Author:
Shengwei Wang,   et al.   ; Huan Tian; Yijiang Wen; Kang Fei;     Show all 4 Authors
Source:
Journal of contaminant hydrology 2022 v.245 pp. 103939
ISSN:
0169-7722
Subject:
bound water; carbon tetrachloride; centrifugation; clay; distillation; effective porosity; films (materials); hydraulic conductivity; hydrochemistry; liquids; seepage; soil water potential; vegetable oil
Abstract:
... Immobile water is defined as a firmly bound thin film of water surrounding clay particles that somehow resembles solid features. The characteristics and amount of immobile water depend on pore water chemistry, the type of clay, and the contact area of water with particles. Seepage can occur only when the hydraulic gradient increases sufficiently. To date, no accurate method is available to determi ...
DOI:
10.1016/j.jconhyd.2021.103939

10. An agent-based distributed real-time optimal control strategy for building HVAC systems for applications in the context of future IoT-based smart sensor networks

Author:
Shengwei Wang,   et al.   ; Bing Su;     Show all 2 Author
Source:
Applied energy 2020 v.274 pp. 115322
ISSN:
0306-2619
Subject:
air conditioning; automation; controllers; energy; heating systems; ventilation systems
Abstract:
... Existing studies on distributed optimal control of HVAC systems rarely consider the needs and constraints for practical applications and the deployment of control strategies on the physical building automation platforms. This paper proposes an agent-based distributed real-time control strategy for building HVAC systems with the objective to be deployed in the local control devices with limited pro ...
DOI:
10.1016/j.apenergy.2020.115322

11. A disturbance compensation enhanced control strategy of HVAC systems for improved building indoor environment control when providing power grid frequency regulation

Author:
Shengwei Wang,   et al.   ; Huilong Wang;     Show all 2 Author
Source:
Renewable energy 2021 v.169 pp. 1330-1342
ISSN:
0960-1481
Subject:
heat; renewable electricity; renewable energy sources
Abstract:
... Renewable electricity generations are promising to address the global energy issue while they also place great pressure on the reliability of power grids due to their intermittent nature. In recent years, existing heating, ventilation and air-conditioning (HVAC) systems in buildings have attracted increasing attention to implement continuous demand response in providing frequency regulation servic ...
DOI:
10.1016/j.renene.2021.01.102

12. A hierarchical optimal control strategy for continuous demand response of building HVAC systems to provide frequency regulation service to smart power grids

Author:
Shengwei Wang,   et al.   ; Huilong Wang;     Show all 2 Author
Source:
Energy 2021 v.230 pp. 120741
ISSN:
0360-5442
Subject:
air conditioning; buildings; controllers; electrical equipment; energy; exhibitions; heat; power generation; quality control; testing; working conditions
Abstract:
... Ensuring the power balance and reliability of power grids is an increasing challenge due to the increasing involvement of intermittent renewable power generations. The use of existing heating, ventilation and air-conditioning (HVAC) systems in buildings has attracted increasing attention to implement continuous demand response in providing frequency regulation service, which can enhance instantane ...
DOI:
10.1016/j.energy.2021.120741

13. A delay-tolerant distributed optimal control method concerning uncertain information delays in IoT-enabled field control networks of building automation systems

Author:
Shengwei Wang,   et al.   ; Bing Su;     Show all 2 Author
Source:
Applied energy 2021 v.301 pp. 117516
ISSN:
0306-2619
Subject:
Internet; air; automation; control methods; energy; heat; information exchange; multipliers
Abstract:
... Distributed optimal control deployed on field control networks has gotten increasing attention with the rapid development and wide applications of the Internet of Things, including the applications in building automation. Information delays, time delays in information exchange between different devices integrated in communication networks, can affect the performance of distributed optimal control ...
DOI:
10.1016/j.apenergy.2021.117516

14. Experimental study on the dynamics, quality and impacts of using variable-speed pumps in buildings for frequency regulation of smart power grids

Author:
Shengwei Wang,   et al.   ; Huilong Wang; Kui Shan;     Show all 3 Authors
Source:
Energy 2020 v.199 pp. 117406
ISSN:
0360-5442
Subject:
air conditioning; air temperature; buildings; heating systems; pumps; ventilation systems
Abstract:
... The increased generation of renewable power is challenging in terms of the power balance and reliability of power grids due to the intermittent nature of renewable sources. Heating, ventilation, and air-conditioning (HVAC) systems in buildings, at demand side, are promising candidates for providing frequency regulation. In this study, we systematically assessed the use of variable-speed pumps in H ...
DOI:
10.1016/j.energy.2020.117406

15. Effects of pH and EC on the strength and permeability of plastic concrete cutoff walls

Author:
Shengwei Wang,   et al.   ; Yijiang Wen; Kang Fei;     Show all 3 Authors
Source:
Environmental science and pollution research 2021 v.28 no.31 pp. 42798-42806
ISSN:
0944-1344
Subject:
bentonite; cement; compression strength; concrete; electrical conductivity; hydraulic conductivity; pH; permeability; pollution; research; sand
Abstract:
... At present, plastic concrete is widely used in anti-seepage engineering, and its strength and hydraulic conductivity are important indexes of plastic concrete cutoff walls. The pondus hydrogenii (pH) and electrical conductivity (EC) have an important effect on the strength and hydraulic conductivity of plastic concrete cutoff walls. However, it is not clear why the pH and EC are related to the str ...
DOI:
10.1007/s11356-021-13776-y

16. Flexibility categorization, sources, capabilities and technologies for energy-flexible and grid-responsive buildings: State-of-the-art and future perspective

Author:
Shengwei Wang,   et al.   ; Hong Tang; Hangxin Li;     Show all 3 Authors
Source:
Energy 2021 v.219 pp. 119598
ISSN:
0360-5442
Subject:
business development; electricity; energy; telemetry
Abstract:
... The rapid development of remote telemetry, control and communication technologies in smart grids enables the demand side to provide energy flexibility for power grid economy and reliability. The building sector, as a consumer of large amounts of electricity, has various flexible loads that can be effectively utilized for such purposes if buildings and their energy systems are under proper design a ...
DOI:
10.1016/j.energy.2020.119598

17. Impacts of uncertain information delays on distributed real-time optimal controls for building HVAC systems deployed on IoT-enabled field control networks

Author:
Shengwei Wang,   et al.   ; Bing Su; Wenzhuo Li;     Show all 3 Authors
Source:
Applied energy 2021 v.300 pp. 117383
ISSN:
0306-2619
Subject:
Internet; Markov chain; energy; information exchange; water temperature
Abstract:
... Distributed optimal control deployed on field control networks is receiving increasing attention with the rapid development of the Internet of Things (IoT), including its applications in HVAC systems. Information delays refer to the time delays in information exchange between devices integrated in communication networks. They could affect the performance of distributed optimal control, but are rar ...
DOI:
10.1016/j.apenergy.2021.117383

18. Controlling a large constant speed centrifugal chiller to provide grid frequency regulation: A validation based on onsite tests

Author:
Shengwei Wang,   et al.   ; Kui Shan; Chaoqun Zhuang;     Show all 3 Authors
Source:
Applied energy 2021 v.300 pp. 117359
ISSN:
0306-2619
Subject:
cooling; electrical equipment; electricity; energy; energy use and consumption; renewable energy sources; Maryland; New Jersey; Pennsylvania
Abstract:
... High penetration of intermittent renewables may cause safety and stability problems to the electricity grid. Building thermal loads could contribute to the grid stability in the era of renewable energy and smart grid, because they are high and flexible. This study proposes a model predictive control strategy to control a large constant speed centrifugal chiller to follow grid frequency regulation ...
DOI:
10.1016/j.apenergy.2021.117359

19. Coordinated optimal design of zero/low energy buildings and their energy systems based on multi-stage design optimization

Author:
Shengwei Wang,   et al.   ; Hangxin Li;     Show all 2 Author
Source:
Energy 2019 v.189 pp. 116202
ISSN:
0360-5442
Subject:
buildings; carbon; case studies; cooling; cost effectiveness; energy; system optimization; systems engineering; China
Abstract:
... As promising means to reduce carbon emission and energy consumption, zero/low energy buildings have been attracting increasing attentions. Multi-stage design optimization methods have been developed for zero/low energy buildings and their energy systems especially when a large number of design variables need to be optimized. However, these methods ignore the interactions between building envelope ...
DOI:
10.1016/j.energy.2019.116202

20. Optimal design of data center cooling systems concerning multi-chiller system configuration and component selection for energy-efficient operation and maximized free-cooling

Author:
Shengwei Wang,   et al.   ; Howard Cheung;     Show all 2 Author
Source:
Renewable energy 2019 v.143 pp. 1717-1731
ISSN:
0960-1481
Subject:
climatic factors; cooling; cooling towers; electric energy consumption; energy efficiency; pumps; renewable energy sources
Abstract:
... The large data center electricity consumption is a growing global concern. To be environment-friendly and to enhance energy efficiency in operation, data center cooling systems adopt a variety of advanced cooling and renewable energy technologies such as free cooling. However, these free cooling systems are not optimally designed in field practices, and their energy efficiencies are much lower tha ...
DOI:
10.1016/j.renene.2019.05.127