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In recent years, increasing tourist visits to Vietnam have resulted in a significant increase in the demand for infrastructure and energy consumption. The territory of Vietnam stretches from 8.42o to 23.39o N, thus, Vietnam is a country of enormous sunshine with an average annual solar radiation of about 1675 kWh/m2 and receives nearly 1854 hours/year of sunlight [1]. Solar power is a clean and valuable source of energy to be exploited for heating water. Presently, however, hot water is produced by standard types of energy such as electricity, coal, diesel, gas, and others. These methods are costly and negatively impact the environment. Therefore, solar energy is a better choice to replace these conventional energy sources [2]. Moreover, software modelling is considered to be quite an effective tool for the simulation of energy in many countries around the world. In this work, powerful software is applied to the calculation of heat radiation in Vietnam. This novel software application facilitates design, architecture, and engineering fields to realize a new view of building information modelling (BIM) in regard to the design and construction related to solar radiation, heated water, and energy analysis. Further, this software meets the BIM development roadmap of construction activities and management led by the Vietnamese Prime Minister.

The efficiency of solar water heating system with heat pump software application designed for resorts in Vietnam