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Open AccessArticle

Climate Classification for the Use of Solar Thermal Systems in East Asia

1
Platform of Inter/Transdisciplinary Energy Research, Kyushu University, Fukuoka 8190395, Japan
2
Energy Innovation Center, Central Research Institute of Electric Power Industry, Yokosuka 2400196, Japan
*
Author to whom correspondence should be addressed.
Energies 2019, 12(12), 2286; https://doi.org/10.3390/en12122286
Received: 25 April 2019 / Revised: 10 June 2019 / Accepted: 12 June 2019 / Published: 14 June 2019
To examine the effects of solar heat utilization, it is necessary to classify the solar-use climate in East Asia based on climatic factors that affect load reduction by solar heating systems. In this study, annual load simulations are performed on weather data in 842 sites in Japan to analyze the climatic factors that impact the load reduction effect of the solar heating system. The analysis results were based on three climatic factors that strongly affect the heating load of a building: heating degree day (HDD18-18), daily solar global horizontal irradiance, and solar-heat available days. Furthermore, to distinguish the climate for the use of solar heat in East Asia, climate classification was done according to three climatic factors using the weather data of 1176 sites in East Asia. Consequently, the climate of solar thermal utilization in East Asia can be classified into 88 areas. Based on the regional classification for solar heat utilization proposed in this study, it will be possible to examine the effect of load reduction and applicability according to the use of solar heat in each region in the future. View Full-Text
Keywords: solar heating system; climate classification; heating load; regression analysis solar heating system; climate classification; heating load; regression analysis
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Choi, Y.; Kim, H.B. Climate Classification for the Use of Solar Thermal Systems in East Asia. Energies 2019, 12, 2286.

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