Optimization-based feasibility study of an active thermal insulator

Abstract In this paper, we perform a preliminary optimization-based study to explore the potential effectiveness of the proposed Active Thermal Insulator (ATI). The ATI is a specially designed window that is expected to actively compensate for the heat gains or losses that occur through it. This window design has a thin-film photovoltaic (PV) module integrated into the outer pane, which powers thermoelectric (TE) units embedded in the frame of the window. TE units can enforce heat flow in a designated direction when supplied with electricity. In this study, the operation of the ATI window in summer has been considered. In summer, the TE units induce heat flow from the interior of the building envelope to the outside. This direction of heat transfer is opposite to that occurring naturally, and thereby minimizes the net heat gain of the room. Finned heat sinks were added to aid the heat transfer to and from the TE units. Our research seeks to design an ATI window that uses solar energy, thereby reducing the energy consumed by the air-conditioning system from the power grid. In this paper, we study the effect of TE unit selection on the ATI’s feasibility. We use optimization formulations to help describe the ATI’s performance. The results show the ATI design can offer a significant improvement over traditional windows, and that the selection of TE unit is critical to effectiveness of the design.

[1]  D K Smith,et al.  Numerical Optimization , 2001, J. Oper. Res. Soc..

[2]  Robin Mitchell,et al.  Performance Criteria for Residential Zero Energy Windows , 2006 .

[3]  D. Rowe.  Thermoelectrics Handbook , 2005 .

[4]  Sedat Keleş,et al.  Global warming and renewable energy sources for sustainable development: A case study in Turkey , 2008 .

[5]  Achille Messac,et al.  Design of thermoelectric heat pump unit for active building envelope systems , 2005 .

[6]  Wei He,et al.  Use of ventilated solar screen window in warm climate , 2006 .

[7]  E. S. Lee.  Integrated performance of an automated venetian blind/electric lighting system in a full-scale private office , 1998 .

[8]  Charlie Huizenga,et al.  THERM 5 / WINDOW 5 NFRC simulation manual , 2003 .

[9]  Wang Gang,et al.  Contribution to emission reduction of CO2 and SO2 by household biogas construction in rural China , 2007 .

[10]  Y. Çengel.  Heat Transfer: A Practical Approach , 1997 .

[11]  Robin Mitchell,et al.  WINDOW 5.0 User Manual , 2001 .

[12]  Gregory Kiss,et al.  Optimal Building-Integrated Photovoltaic Applications , 1995 .

[13]  Lisa Heschong,et al.  Residential Windows: A Guide to New Technologies and Energy Performance , 1996 .

[14]  Kiyoshi Chiba,et al.  Low-emissivity coating of amorphous diamond-like carbon/Ag-alloy multilayer on glass , 2005 .

[15]  Achille Messac,et al.  Optimizing Thermoelectric Cascades to Increase The Efficiency of Thermoelectric Windows , 2008 .

[16]  Bin-Juine Huang,et al.  A design method of thermoelectric cooler , 2000 .

[17]  Stephen Selkowitz,et al.  The energy-savings potential of electrochromic windows in the US commercial buildings sector , 2004 .

[18]  Stephen J. Wright,et al.  Numerical Optimization , 2018, Fundamental Statistical Inference.

[19]  Deo Prasad,et al.  Designing with Solar Power: A Source Book for Building Integrated Photovoltaics (BiPV) , 2005 .

[20]  Raúl J. Martín-Palma,et al.  In-depth optical and structural study of silver-based low-emissivity multilayer coatings for energy-saving applications , 2004 .

[21]  D. Arasteh,et al.  Window-Related Energy Consumption in the US Residential and Commercial Building Stock , 2008 .

[22]  Achille Messac,et al.  Heat Compensation in Buildings Using Thermoelectric Windows: An Energy Efficient Window Technology , 2008, DAC 2008.

[23]  Stephen Selkowitz,et al.  Active Load Management with Advanced Window Wall Systems: Research and Industry Perspectives , 2002 .