Comment: the proportion of works do not use hot water Kettle quite high when accounting for 54%, because of the purpose of use of investor does not need to. The use of hot water is mainly focused on what type: Hotel (BC05, BC06), condo (BC14), building complex (BC16). With the advantage of easy-to-use, low capital investment, the single hot water Kettle electric is used most in the works, amounting to 32%. Heatpump technology also is being used many applied when accounting for 6%, with the advantage of easy-to-use, low operating costs, continuous operation (can transfer the status of the heating and cooling), safe use, high-performance (performance can be up to 400%). Heat pump systems can be used for a building or a household. Next up was hot water heating system with solar energy and gas water heaters, accounted for 4%. Hot water heating system using solar energy with the advantage are: power-saving, continuous use, hot water can be used on many purposes, friendly to the environment. Currently, the average hot water by solar energy are the new trend is to apply to the appropriate building green building criteria. Whilst the average gas water heaters are very few modern buildings use as insecure, not friendly to the environment.
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