T15_HAY_HEAT_3slides

T15_HAY_HEAT_3slides - HEAT – Home Energy Assessment...

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Unformatted text preview: HEAT – Home Energy Assessment Technologies Geomatics Solutions to Improve Urban Energy Efficiency Through Residential Waste Heat Monitoring Geoffrey J. Hay , C.D. Kyle, B. Hemachandran, G. Chen, M. Rahman S. Das and F. Savio Department of Geography, University of Calgary, Alberta, Canada Email: [email protected] Geog 333 – RS & GIS Methods for Monitoring U of Calgary, Calgary, Alberta – December 2 nd 2010 2 © 2010 G.J.Hay HEAT Overview What is HEAT – Thermal Energy Primer Why HEAT – The Project Data Methods System Components User Interaction Challenges Innovation What's Next Conclusion 3 © 2010 G.J.Hay What is Heat? Thermal Energy Primer Light is composed of many wavelengths, of which we only see a small amount We can use instruments to convert these wavelengths to values we can measure and see (i.e., as images). 4 © 2010 G.J.Hay Thermal Energy Primer Everything above absolute zero (0K or-273.1°C) emits radiation in the infrared range of the electromagnetic spectrum Any object that is hot, gives off energy - known as Thermal Radiation (TR) The Hotter an object is the, the more TR it emits What am I ? 5IFSNBM!JNBHF!PG!BO!JDF.DVCF!NFMUJOH!JO!B!HMBTT 1IPUP!DPVSUFTZ!PG!/"4"0+1-.$BMUFDI0*1"$ 5 © 2010 G.J.Hay Thermal Energy Primer Data Collection Thermal windows typically collected from aircraft platforms are in the 3-5 μm and 8-14 μm wavelength regions. Space borne sensors commonly use windows between 3 and 4 μm and between 10.5-12.5 μm. Solar reflectance contaminates the 3-4 μm window to some degree during daylight hours, so measurements are made at night/early morning: – Higher thermal gradient "7)33!. 445T!GPS!UIF!NPOUIT!PG!+BOVBSZ!JO!2::68! 4PVSDF;[email protected] 6 © 2010 G.J.Hay Urban Heat Island Effect source: ht p:/ en.wikipedia.org/wiki/Urban_heat_island An urban heat island (UHI) is a metropolitan area which is significantly warmer than its surrounding rural areas. The main cause of the urban heat island is modification of the land surface by urban development which uses materials which effectively retain heat. Waste heat generated by energy usage is a secondary contributor. 7 © 2010 G.J.Hay What is Waste Heat? Waste heat refers to heat produced from machines that have no useful application . In this project, waste heat represents expensive heated air that is leaving your home, instead of staying and keeping you warm. Waste heat typically escapes through poorly insulated doors, windows, walls, ceilings, ductwork and electrical fixtures (i.e., pot lights). This is costly to the home owner, generates considerably more green- house-gas (GHG) emissions than necessary, and is invisible to the human eye....
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This note was uploaded on 01/18/2011 for the course GEOG 331 taught by Professor Staff during the Fall '08 term at Kansas.

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T15_HAY_HEAT_3slides - HEAT – Home Energy Assessment...

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