Abstract
In the previous report, monthly weather data at more than 3700 locations throughout the world were compiled for air-conditioning load calculation (see Part 1), and methods for estimating hourly weather values based on monthly data were proposed (see Part 2). In this report, a periodical steady state calculation system was developed for estimating design and average heat loads at any location in the world. We conducted many case studies on office buildings in six Japanese cities for which Standard Weather Data had been prepared, and compared values calculated using the conventional Standard Weather Data to those calculated using our new system. For both design heat load and average heat load the differences were less than 10%, indicating that our new system is suitable for practical use. Also, system modifications that must be done in order to prepare the system for use outside Japan were identified.
