Saim Memon, MSc, BEng, MIET, MIEEE, Student-Member CIBSE Energy Performance of Buildings- the gap between prediction and actual energy use A Building Energy & Comfort Knowledge Sharing (BECKS) Colloquium Wednesday 28th November 2012, 09:15 – 13:00, Room KG1.09 Keith Green Design & Development of Triple Vacuum Glazing: An Investigation on Cost Effective Hermetic Sealing Materials & Predictions of Heat Load in a Solid Wall Dwelling Presented by Saim Memon, MSc, BEng, MIET, MIEEE, Student-Member CIBSE PhD Research Student (Final Year) Supervisor Prof. Philip C. Eames Project CALEBRE (Consumer Appealing Low Energy Technologies for Building Retrofitting) £2 million research project, funded jointly by Research Councils UK Energy Programme and E.ON NOTE This presentation requires copyright permission from Saim Memon to reproduce, reuse or re-establish the ideas , data and /or pictures given in this unpublished work.

CARBON EMISSIONS WINDOWS UTILITY COMPANY CONSUMERS Designed at Google SketchUp using Google 3D Warehouse models

What is the Triple Vacuum Glazing Idea Credit: (Eames,2008), (Manz et al, 2006), and (Fang et al,2010)

Aims & Objectives The aim of this research project is to design, simulate, and develop triple vacuum glazing with cost effective hermetic edge seal solution in order to achieve heat transfer coefficient mid-pane Ug value down to 0.33 W/(m2.K). In addition, investigations are required through simulations for the reduction of solid wall dwellings/buildings heat loss by retrofitting triple vacuum glazings with the conventional glazings. To achieve the aim of this research the following objectives are devised. To design and develop effective vacuum glazing system in Loughborough University for the fabrication of triple vacuum glazing and for the experimental characterisation. To simulate the solid wall dwelling’s heat load and solar gain with selected window to wall area ratios using triple vacuum glazing and comparing with single, double and triple air filled glazings for the cost-benefit analysis. To simulate thermal performance of triple vacuum glazing using different edge sealing techniques, glass types, low emittance coatings, thermal resistance and pillar spacing to predict optimum glazing. To fabricate triple vacuum glazing using alternative edge sealing techniques and perform experimental thermal performance testing.

 Development of Vacuum Glazing System Findings to date  Development of Vacuum Glazing System Vacuum system Materials design/testing section Glass Sheets and cleaning section Support Pillar placing section

 Fabrication of Successful Vacuum glazing samples Findings to date  Fabrication of Successful Vacuum glazing samples Double vacuum glazing using 40.97% less indium material than the current practice. Triple vacuum glazing using indium vacuum glazing using an alternative low cost edge sealing glass-metallic material. It reaches to DOWN TO 0.01 Pa vacuum pressure. It is still under investigation for the further reduction of pressure and long term stability of bonding between two glass sheets.

Findings to date  Simulations for the Cost-Savings Analysis by comparing conventional glazings to the vacuum glazing of a SINGLE ROOM in a SOLID WALL DWELLING 2072.5 kWh 1849 kWh 1783.4 kWh 1687.2 kWh 1674.3 kWh £117.05 £117.9 £124.7 £129.3 £144.88 £15.62 £20.20 £26.93 £27.83 Winter Energy Cost and Savings (Memon & Eames, 2012)

Findings to date  Simulations to analyse the effects of Window to Wall Area Ratios when using conventional glazings compared to the vacuum glazing Heat Load Performance Analysis of Glazing's at Different Window to Wall Area Ratios (Memon & Eames, 2012)

Findings to date  Annual Heat Load Analysis of a Semi-Detached house model having double glazed windows retrofitted with conventional and vacuum glazings REALISTICALLY 25330 kWh Gas Consumption including DHW and Gas Hob Cooking loads

Findings to date  Annual Heat Load Analysis of a Semi-Detached house model retrofitted with conventional and vacuum glazings Annual Heat Load Performance Analysis of Glazing's

Findings to date  Annual Heat Load Analysis of a Semi-Detached house model retrofitted with conventional and vacuum glazings BASED ON PREDICTIONS A double Vacuum Glazed could save 1682.7 kWh if replacing double glazed window. An Annual savings of £145.97 can be achieved.

Findings to date REALISTICALLY the cost of Vacuum Glazing (0.3x0.3m) using INDIUM material, the cost based on the fabrication of sample at laboratory. £37.6 from Conro Electronics UK £14.28 from Gzlitop China With my new approach, it was shown that the cost could be reduced to 40.97%. This method is still under investigation. £15.40 from Conro Electronics UK £5.85 from Gzlitop China If using new sealing material the cost could be reduced to £3.00 (It doesn’t include the cost of Pilkington k glass sheets, stainless steel support pillars and electricity consumption)

I DON’T MIND THE QUESTIONS BUT MIND THE GAP ANY QUESTIONS? ANY COMMENTS? PLEASE