Performance of double-circulation water-flow window system as solar collector and indoor heating terminal

Li, Chunying; Li, Cuimin; Lyu, Yuanli; Qiu, Zhongzhu

doi:10.1007/s12273-019-0600-y

Cited by 21 publications

(4 citation statements)

References 27 publications

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“…Silva and Pålsson, 2022), water circulation performance (e.g. Li et al ., 2020), transportation and car sharing (e.g. Esfandabadi et al ., 2022) or bioenergy (e.g.…”

Section: Sustainability Through Circularitymentioning

confidence: 99%

Circular service management: toward conceptual understanding and service research priorities for a more sustainable future

Karpen,

Edvardsson,

Tronvoll

et al. 2023

JOSM

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PurposeService managers increasingly strive to achieve sustainability through strategies centered on circularity. With a focus on saving, extending and (re)generating resources and their enclosing service systems, circularity can contribute to environmental, social and financial gains. Yet, the notion of circularity is surprisingly understudied in service research. This article seeks to provide an initial conceptual understanding of circular service management, introducing illustrative strategies and research priorities for circular service management. This paper provides a roadmap for scholars, practitioners and policymakers to develop a deeper understanding of the opportunities from adopting circular services.Design/methodology/approachThe authors explore the concept of circular service management by drawing upon existing literature on sustainability, circularity and service research. Strategies of circular service management and research priorities emerge on the basis of industry best practice examples and research on sustainability challenges and opportunities.FindingsService researchers have largely ignored the concept and role of circularity for service businesses. Extant research on the topic nearly exclusively features in non-service journals and/or does not seek to advance service theory through circularity. This article argues that circular service management enables the implementation of service thinking in the pursuit of sustainability and outlines four types of circular service management strategies.Originality/valueThe authors introduce the concept of circular service management and highlight the role of service research for designing and managing circular systems and operations. This article also offers a research agenda connecting managerial challenges and opportunities with key service research priorities for circular service management. This provides a roadmap for scholars, practitioners and policymakers to develop a deeper understanding of pursuing circular services, thereby contributing to a more sustainable future.

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“…Silva and Pålsson, 2022), water circulation performance (e.g. Li et al ., 2020), transportation and car sharing (e.g. Esfandabadi et al ., 2022) or bioenergy (e.g.…”

Section: Sustainability Through Circularitymentioning

confidence: 99%

Circular service management: toward conceptual understanding and service research priorities for a more sustainable future

Karpen,

Edvardsson,

Tronvoll

et al. 2023

JOSM

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“…As one of the popular renewable energy sources, solar energy has the advantages of cleanness, non-pollution, and reliability. Therefore, it has been applied in many fields, such as building cooling and heating (Feng et al 2017;Li and Huang 2019;Li et al 2020d). The solar collector is regarded as one main application of solar energy, which has been extensively utilized to supply heat for ISPs.…”

Section: Solar Collector Technologymentioning

confidence: 99%

Swimming pool heating technology: A state-of-the-art review

Nord

Huang

et al. 2020

Build. Simul.

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A large amount of heat is needed to maintain the thermal comfort of both indoor and outdoor swimming pools in cold seasons. This motivates the development of various heating technologies aiming to reduce energy use, as well as operating and investment costs. Although their development can be traced back to the 1960s, a comprehensive review of these technologies is lacking. Therefore, this paper presents a comprehensive review of the development of heating technologies for swimming pools. This review firstly introduces available heat transfer models that can be used to calculate or predict heat loss and heat gain for swimming pools. Then, different passive and active technologies are summarized. The active heating technologies used for indoor swimming pools include solar collector, heat pump, waste heat recovery, geothermal energy, and congregation technologies. The active heating technologies used for outdoor swimming pools include solar collector, heat pump, PCM storage, geothermal energy, biomass heater, and waste heat recovery technologies. A discussion is presented on the practical and possible heating techniques for swimming pool applications. Finally, through the reviewed literature, future research opportunities are identified, to guide researchers to investigate swimming pool heating systems with suitable and relevant technologies.

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“…Solar thermal air collectors are less attractive than solar thermal water collectors due to their lower thermal efficiency [4]. Solar collectors are commonly employed in low-to medium-temperature applications, including room heating [5], crop drying [6], wood flavoring [7], and other industrial uses. Conventional solar air collectors have low thermal efficiency due to the significant heat loss that occurs between the absorption plate and the moving air stream and a low convective heat transfer coefficient [8].…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of a Double Pass Solar Air Thermal Collector with Porous Media Using Lava Rock

et al. 2022

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This paper investigates double-pass solar air thermal collectors with lava rock as the porous media. The addition of lava rock serves as short-term sensible thermal storage for a solar drying system. It also enhances the convective heat transfer rate to the airflow due to an increased heat transfer area and increased turbulence in the air channel. A mathematical model was developed based on energy balance equations and was numerically solved in MATLAB. The collector’s thermal performance was studied at various levels of solar intensity and at different wind speeds for different design parameters: collector size, air mass flow rate, and lava rock volume. From the study, the optimum efficiencies that were obtained in the range between the intensities of 500 W/m2 and 800 W/m2 were 62% to 64%, respectively, with an optimum flow rate of 0.035 kg/s. The optimum porosity of about 89% was selected for the collector by considering the pressure drop and thermal efficiency. An optimal temperature output range between 41.7 °C and 48.3 °C could be achieved and was suitable for agricultural and food drying applications. Meanwhile, compared to conventional DPSAHs, the average percentage increase in the output temperature of the DPSAH with lava rock was found to be higher by 17.5%.

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Performance of double-circulation water-flow window system as solar collector and indoor heating terminal

Cited by 21 publications

References 27 publications

Circular service management: toward conceptual understanding and service research priorities for a more sustainable future

Circular service management: toward conceptual understanding and service research priorities for a more sustainable future

Swimming pool heating technology: A state-of-the-art review

Performance Analysis of a Double Pass Solar Air Thermal Collector with Porous Media Using Lava Rock

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