Numerical investigation of the energy efficiency of a serial pipe-embedded external wall system considering water temperature changes in the pipeline

Jiang, Suhua; Li, Xianting; Lyu, Weihua; Wang, Baolong; Shi, Wenxing

doi:10.1016/j.jobe.2020.101435

Cited by 19 publications

(3 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Other studies varied the velocity of the fluid in the tubes. Jiang et al, [36] investigated the influence of the velocity and the type of arrangement on the performance considering the changes in the water temperature. They compared two TABS arrangements in a numerical study: serial pipe-embedded wall (SPW) and a wall with embedded tubes connected in parallel (PPW).…”

Section: Tabs Embedded In Building Wallsmentioning

confidence: 99%

“…The TABS is studied for its capacity to improve buildings' indoor thermal comfort; some authors have proposed integrating new insulating materials and techniques to control the system. To compare two TABS arrangements in a numerical study, Jiang et al, [36] obtained that the energy load reduction rate of a serial pipe-embedded wall (SPW) system is higher (25.2%) than that of a wall with embedded tubes connected in parallel (PPW) (8.7%). The influence of the TABS system on heating energy consumption in a typical Serbian home was determined by Stojanović et al, [39].…”

Section: Tabs Walls and Other Techniques For Energy Savingsmentioning

confidence: 99%

See 1 more Smart Citation

A Review of Thermally Activated Building Systems (TABS) for Improving the Thermal Behavior of Buildings

Villar-Ramos¹,

Hernández-Pérez²,

Aguilar-Castro³

et al. 2022

Preprint

View full text Add to dashboard Cite

In recent years, several alternatives for improving the thermal comfort conditions inside buildings have been proposed. Among these alternatives, Thermally Activated Building Systems (TABS) have become of interest due to the benefits this technology brings to the building sector. The TABS are embedded in different building components and exchange heat with building envelope to improve the indoor air temperature. This review presents relevant results presented in the literature on the thermal behavior of TABS, the different types of TABS configurations, and the main parameters of TABS studied such as pipe separation, fluid inlet temperature, fluid velocity, and volumetric flow rate. The potential of TABS to improve thermal comfort conditions and provide energy savings is also discussed. Further, this study presents the different modes of application.

show abstract

Section: Tabs Embedded In Building Wallsmentioning

confidence: 99%

Section: Tabs Walls and Other Techniques For Energy Savingsmentioning

confidence: 99%

A Review of Thermally Activated Building Systems (TABS) for Improving the Thermal Behavior of Buildings

Villar-Ramos¹,

Hernández-Pérez²,

Aguilar-Castro³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Jiang, Li, Lyu, Wang and Shi [22] developed a numerical model of a series wall with integrated piping (TB) considering water temperature changes in the piping. The load reduction and energy efficiency of TBs under different climatic conditions and designs were numerically studied.…”

Section: Description Of the Known State Of The Art And Contribution T...mentioning

confidence: 99%

Energy, Economic and Environmental Assessment of Thermal Barrier Application in Building Envelope Structures

2021

View full text Add to dashboard Cite

Thermal engineering requirements for building structures are becoming more and more strict. Thermal barriers (TBs) are energy-active elements integrated into the building structure in which a heat transfer medium (water or air) flows. A survey of the scientific literature on the subject points to the fact that this is a very topical and promising area of research and, so far, most studies on TBs are based on calculations, computer simulations and experimental measurements. Few studies have focused on the economic and environmental aspects of TB use. Following the research results presented by authors from all over the world, as well as our contributions in this scientific field that are described in a European patent, three utility models and scientific articles, in this study we have focused on the evaluation of the TB in terms of energy performance, economic efficiency and environmental friendliness by comparing the use of a classical envelope wall with the required thickness of thermal insulation meeting the normative requirements for thermal resistance R ((m2K)/W) and a perimeter wall with an integrated TB significantly eliminating the thermal insulation thickness. We evaluate the use of the thermal barrier using: economic indicator one, where we compare the cost of heat delivered to the TB in a structure with significantly eliminated thermal insulation and the saved cost of thermal insulation at the standard thickness; economic indicator two, where we compare the cost of heat delivered to the TB in a structure with significantly eliminated thermal insulation with the potential gain from the sale of the useful area of the building gained compared to the area at the normative thickness of thermal insulation; and economic indicator three, where we compare the cost of heat delivered to the TB in a structure with significantly eliminated thermal insulation with the cost of grey energy at the normative thickness of thermal insulation. Based on a parametric study based on theoretical assumptions, it can be concluded that the thermal barrier shows a very promising and efficient solution in terms of the evaluation of economic indicators one to three, which are even more significant if we use heat for the TB from renewable energy sources (RES) or waste heat.

show abstract

Performance verification of pipe‐embedded wall system in school building and proposal of its optimal control strategy

Huang,

Shiraishi,

Hirakawa

et al. 2024

Japan Architectural Review

View full text Add to dashboard Cite

In this study, a thermally activated building system (TABS) installed on the exterior wall as the pipe‐embedded wall (PEW) system in a school building was investigated. The basic performance of the PEW system utilizing well water cascade is verified by unsteady CFD analysis and field measurements. Moreover, in order to improve the utilization efficiency of the thermal potential from well water, the MPC‐based optimal control method with the PEW system to maximize the heat extraction is proposed and verified by unsteady CFD analysis. The analysis results showed that: (1) The PEW system can reduce the peak load from the exterior wall facing different directions at different times. In addition, the PEW system has the effect of stabilizing the indoor thermal environment. (2) The proposed optimal operation strategy improves the energy efficiency, extracting up to 30% more heat and reducing the total heat transmission, which significantly develops the operation efficiency of the PEW system.

show abstract

Numerical investigation of the energy efficiency of a serial pipe-embedded external wall system considering water temperature changes in the pipeline

Cited by 19 publications

References 23 publications

A Review of Thermally Activated Building Systems (TABS) for Improving the Thermal Behavior of Buildings

A Review of Thermally Activated Building Systems (TABS) for Improving the Thermal Behavior of Buildings

Energy, Economic and Environmental Assessment of Thermal Barrier Application in Building Envelope Structures

Performance verification of pipe‐embedded wall system in school building and proposal of its optimal control strategy

Contact Info

Product

Resources

About