Trombe walls with nanoporous aerogel insulation applied to UK housing refurbishments

There is an opportunity to improve the efficiency of passive Trombe walls and active solar air collectors by replacing their conventional glass covers with lightweight polycarbonate panels filled with nanoporous aerogel insulation. This study investigates the thermal performance, energy savings, and financial payback period of passive Aerogel Trombe walls applied to the existing UK housing stock. Using parametric modeling, a series of design guidance tables have been generated, providing estimates of the energy savings and overheating risk associated with applying areas of Trombe wall to four different house types across the UK built to six notional construction standards. Calculated energy savings range from 183 kWh/m2/year for an 8 m2 system retrofitted to a solid walled detached house to 62 kWh/m2/year for a 32 m2 system retrofitted to a super insulated flat. Predicted energy savings from Trombe walls up to 24 m2 are found to exceed the energy savings from external insulation across all house types and constructions. Small areas of Trombe wall can provide a useful energy contribution without creating a significant overheating risk. If larger areas are to be installed, then detailed calculations would be recommended to assess and mitigate potential overheating issues.The EPSRC, Brunel University, and Buro Happold Lt

Scriptural Allusions in the Book of Revelation and the Contours of Textual Research 1900-2014: Retrospect and Prospects

This article traces the contours of the past century of discourse surrounding the underlying textual form of allusions embedded in the book of Revelation. Special attention is paid to the rapid developments on this issue in the past thirty years, a period in which New Testament scholarship has grappled with the textual complexity of the Hebrew Bible presented by the scrolls from the Judaean Desert. The question of textual form is of foundational importance for analysing the reuse or interpretation of Scripture in the book of Revelation. Despite this reality, it is common to find assumptions or misconceptions in recent studies that obfuscate the textual reality of the Hebrew Bible and its early Greek versions the first century ce. The appraisal of scholarship on this issue allows scholars to better contextualize their own approaches to the text of allusions in the light of previous research. This analysis also highlights the changing methods and approaches by which scholars analyse the text of allusions and suggests some avenues for future research on the allusions embedded in the Apocalypse