NDLI: Temperature-Weighted Assessment of Waste Heat Availability With Matched End-Use Applications for Optimal Primary Energy Usage in the USA

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Alexander, S. Rattner Garimella, Srinivas
Copyright Year	2010
Abstract	Approximately two-thirds of all input energy used for power and electricity generation in the USA is lost as heat during conversion processes. Additionally, 12.5% of primary fuel and 20.3% of the electricity generated through these processes are employed for space heating, water heating, and refrigeration where low-grade heat could suffice. The potential for harnessing waste heat from power generation and thermal processes to perform these low-grade tasks is assessed here. By matching power plant outlet streams with applications at corresponding temperature ranges, this study identifies sufficient waste heat to satisfy all residential, building, and manufacturing space and water heating needs. Sufficient high temperature exhaust from power plants is identified to satisfy 27% of residential air conditioning demand with thermally activated refrigeration or all industrial low temperature (100–150°C) process heating and refrigeration needs. Exhaust from vehicle engines is sufficient to satisfy all in-vehicle air conditioning and 68% of electricity generation demand. Energy usage and waste heat availability and application information collected for this study is compiled in a thermodynamically informed database. By providing SQL queries, this database can answer detailed questions about energy sources and demands delineated by temperature, energy scale, process, and location. This capability can inform future infrastructure and development to effectively capture waste heat that would be lost today, substantially reducing the USA national energy intensity across all end uses.
Starting Page	1501
Ending Page	1511
Page Count	11
File Format	PDF
ISBN	9780791844298
DOI	10.1115/IMECE2010-39332
Volume Number	Volume 5: Energy Systems Analysis, Thermodynamics and Sustainability; NanoEngineering for Energy; Engineering to Address Climate Change, Parts A and B
Conference Proceedings	ASME 2010 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2010-11-12
Publisher Place	Vancouver, British Columbia, Canada
Access Restriction	Subscribed
Subject Keyword	Air conditioning Energy consumption Temperature Residential construction High temperature Fuels Engines Exhaust systems Vehicles Electric power generation Heat Databases Energy resources Heating Energy generation Power stations Manufacturing Waste heat Refrigeration Hot water heating Low temperature
Content Type	Text
Resource Type	Article

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