Energy conservation using new structured-core and transparent vacuum insulation panels: Numerical simulation with experimental validation

Katsura, Takao; Radwan, Ali; Zhang, Yang; Nakamura, Makoto; Nagano, Katsunori

doi:10.1016/j.solener.2019.09.083

Cited by 11 publications

(36 citation statements)

References 35 publications

(69 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 1 shows a concept diagram of the TVIP [6]. The manufacturing steps start with the preparation of the VIP core structure, transparent low-emissivity (Low-E) sheet, and transparent envelope.…”

Section: Outlines Of Transparent Vacuum Insulation Panels 21 Outlines Applications and Advantagesmentioning

confidence: 99%

“…In addition, the oxide calcium adsorbent pack or the getter material is also inserted to adsorb the outgassing from core material and the gas passing through the envelope. The transparent envelope facilitates the applicability of these TVIPs to existing windows where light transparency is Manufacturing steps, real images, schematic description, and the proposed real field application of the structured-core and transparent vacuum insulation panel (TVIP) for existing windows [6].…”

Section: Outlines Of Transparent Vacuum Insulation Panels 21 Outlines Applications and Advantagesmentioning

confidence: 99%

“…The full structure is evacuated and sealed in a vacuum sealing machine after reaching the vacuum design pressure. Figure 2 shows an example of lab-scale vacuum sealing machine [6]. In this machine, the pressure level can be controlled either automatically or manually.…”

Section: Outlines Of Transparent Vacuum Insulation Panels 21 Outlines Applications and Advantagesmentioning

confidence: 99%

See 2 more Smart Citations

Transparent Vacuum Insulation Panels

Katsura¹

2021

Advances and Technologies in Building Construction and Structural Analysis

Self Cite

View full text Add to dashboard Cite

New, low-cost transparent vacuum insulation panels (TVIPs) using structured cores for the windows of existing buildings are proposed. The TVIP is produced by inserting the structured core, the low-emissivity film, and the adsorbent into the transparent gas barrier envelopes. In this chapter, the authors introduce the outlines, the design and thermal analysis method, the performance evaluation (test) method. Firstly, five spacers, namely peek, modified peek, mesh, silica aerogel, and frame, are selected as the structured core. The effective thermal conductivity of TVIPs with five different spacers is evaluated at different pressure levels by applying numerical calculation. The result indicated that TVIPs with frame and mesh spacers accomplish better insulation performance, with a center-of-panel apparent thermal conductivity of 7.0 × 10−3 W/m K at a pressure of 1 Pa. The apparent thermal conductivity is the same as the value obtained by the simultaneous evacuation thermal conductivity measurement applying the heat flux meter method. Furthermore, using a frame-type TVIP with a total thickness of 3 mm attached to an existing window as a curtain decreases the space heat loss by approximately 69.5%, whereas the light transparency decreases to 75%.

show abstract

Section: Outlines Of Transparent Vacuum Insulation Panels 21 Outlines Applications and Advantagesmentioning

confidence: 99%

Section: Outlines Of Transparent Vacuum Insulation Panels 21 Outlines Applications and Advantagesmentioning

confidence: 99%

Section: Outlines Of Transparent Vacuum Insulation Panels 21 Outlines Applications and Advantagesmentioning

confidence: 99%

See 1 more Smart Citation

Transparent Vacuum Insulation Panels

Katsura¹

2021

Advances and Technologies in Building Construction and Structural Analysis

Self Cite

View full text Add to dashboard Cite

show abstract

“…Translucent Vacuum insulation panels (TVIPs), invented by Katsura et al, (2019) [82], is distinguished in terms of its lower thermal conductivity as compared to traditional opaque vacuum insulation panels (VIP) [83,84]. The TVIP in this has been a disruptive innovation to existing insulated windows because it is translucent, slim and can be retrofitted to existing windows of the buildings.…”

Section: Translucent Vacuum Insulation Panel (Tvip)mentioning

confidence: 99%

“…6. Schematic diagram of (a) solder-glass sealed VG [51], (b) indium-sealed VG [52,68,69], (c) compositesealed VG, (d) fusion-sealed VG [49], (e) composite sealed TVG [71], (f) structured-core mesh TVIP [82], (g) Hybrid VG, VGPV, VIPPV, and GPV [88]…”

Section: Hybrid Transparent Pv With Vg and Tvipmentioning

confidence: 99%

Modern Eminence and Concise Critique of Solar Thermal Energy and Vacuum Insulation Technologies for Sustainable Low-Carbon Infrastructure

Memon

Katsura

Radwan

et al. 2020

STVE

Self Cite

View full text Add to dashboard Cite

A concise critique on harnessing the abundant solar thermal energy and improvement with vacuum insulation for the utilization and conversion is presented. This research implicates that the world is becoming a global solar smart city prompted by increasing daily demand of energy by the global population and land-use. Amongst all the renewable energy resources available, solar thermal energy collectors (STC) are the most copious because it is accessible in both direct and indirect modes with global solar thermal capacity in operation in 2019 was 479 GWth and annual energy yield estimated to be 389 TWh. Hybridization has been found to be the only way of improving the existing performance of (STC) such as hybrid photovoltaic thermal (PVT) with phase-change material (PCM) for energy storage and magneto-thermoelectric generators (MTEGs) and/or vacuum insulated TEG (VTEG) for waste heat energy conversion to electrical power. The concentrating solar power (CSP) technologies were also precisely studied and yet parabolic trough collector, dish sterling and solar tower are amongst the top solar thermal heat energy harvesters and its electrical power generation has also been comprehended. The modern eminence of vacuum insulation technologies on thermal comfort and sound insulation in sustainable low-carbon buildings is presented. The research implicates that there is still a scope of improving the building and construction sector and target to achieve not only zero-energy buildings (ZEB) but generating-energy buildings (GEB). A concise critique on vacuum insulated smart glazed windows is presented and the review implicates that the hybridization with PV and TEG and novelty in the constructional materials of vacuum glazing (VG) and translucent vacuum insulation panel (TVIP)

show abstract

Recent Progress in High-Efficiency Transparent Vacuum Insulation Technologies for Carbon Neutrality

Jung,

Kim,

2024

Int. J. of Precis. Eng. and Manuf.-Green Tech.

View full text Add to dashboard Cite

Enhancing energy efficiency in buildings is a pivotal strategy for reducing energy consumption and mitigating greenhouse gas emissions. As part of global efforts to achieve carbon neutrality by 2050, there is a heightened focus on improving window insulation because windows are a significant source of thermal loss, representing nearly 40% of a building's heat dissipation. This study explores the development and application of vacuum insulation glazing (VIG), a cutting-edge insulation technology, to substantially reduce heat transfer through windows, thereby contributing to building energy savings. With its superior insulation performance, achieving thermal transmittance levels around 0.5W/m2·K, VIG technology presents a promising advancement over traditional double-glazed or gas-filled insulating glass units (IGUs). However, the adoption of VIG is challenged by economic factors, with costs significantly higher than standard IGUs and triple-glazed windows meeting passive house standards. The production of VIG, characterized by lengthy evacuation times and high processing temperatures, contributes to its elevated price. This research identifies the potential for cost reduction through optimizing manufacturing processes, including using low-melting-point solders for hermetic sealing and localized heating techniques to shorten production times. Despite the high initial cost, the potential for integrating VIG with other smart technologies suggests a promising future for achieving carbon neutrality in buildings. The study calls for further research and standardization in VIG production to overcome current technical and economic barriers, paving the way for its wider adoption and realizing next-generation energy-efficient building materials.

show abstract

Energy conservation using new structured-core and transparent vacuum insulation panels: Numerical simulation with experimental validation

Cited by 11 publications

References 35 publications

Transparent Vacuum Insulation Panels

Transparent Vacuum Insulation Panels

Modern Eminence and Concise Critique of Solar Thermal Energy and Vacuum Insulation Technologies for Sustainable Low-Carbon Infrastructure

Recent Progress in High-Efficiency Transparent Vacuum Insulation Technologies for Carbon Neutrality

Contact Info

Product

Resources

About