Abstract

ABSTRACT The most recent IPCC Assessment Report (AR4, 2007) includes projections of the increase in global surface temperature attributable to increased atmospheric greenhouse gas concentrations. Any sustained increase in global surface temperatures would be expected to lead to an increase in annual space-cooling energy usage and a decrease in space-heating energy usage. In an effort to reduce energy usage and greenhouse gas emissions, many buildings are receiving energy efficiency upgrades. The HVAC related efficiency upgrades would be impacted by the expected changes in global surface temperature. Savings associated with upgrades are often determined by using building energy simulation methods, which are typically based on long-term historical weather data such as TMY data sets. This method is backward-looking in that it predicts future energy usage based on the weather data of past decades. This article examines the results of adjusting weather data to more closely match IPCC predictions on energy savi...

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