Year-end Sale % OFF 
Abstract
The electric consumption in the building shares the highest portion in all user sectors. Therefore, energy conservation in building is important to get higher energy standard in the country. Retail and wholesale building consume high electricity. Energy consumption ratio in this building type is 40% Air conditioning, 28% Refrigeration, 12% lighting and 20% from the other. Those element need to be focused. This research is an optimization of air conditioning design and building envelope with operation schedule, refrigeration and lighting system. The objective is to find out optimization design to minimize total cost. The design criteria is to maintain requirement at day time whereas to response refrigeration system at all night. The developed designed is interacted between building system and building envelop. Case study is retail and wholesale building in Thailand. The design with life time of the machine, replacement cost and energy consumption of each option will be used to evaluate total life cycle cost. This study results in the total life cycle cost of new model of 1,014.14 M Baht comparing with 1,207.91 M Baht of conventional design. It has been saved 193.76 M Baht or 16% for 30 years. Therefore, the benefit of new improvement is very high and helps building owner to save a huge amount of money.
Highlights
Within the current rate of population growth and technology trend, the future global economy is likely to consume more energy, especially in the building
This percentage saving can be calculated to be total building saving by using energy consumption ratio in Figures 1 and 2. 11.86% consumption saving is a simulation of total building
It means that the final optimum design prediction is 2,595,723 kWh/year and 259.5 kWh/m2 for whole building area and 370.8 kWh/m2 for sale area. 11.86 % is an energy consumption saving from the total solution of this research
Summary
Within the current rate of population growth and technology trend, the future global economy is likely to consume more energy, especially in the building. According to the electric consumption statistic 10 years ago in Thailand, Commercial and residential sectors consumed electricity 53.4% of all. Industrial sector consumes 45.7% while agricultural sector is 0.2%, and other sector is 0.6% (Energy in the buildings and social development plans national economy, 2019). The most energy consumption is commercial sector. We have to consider the energy management in commercial sector and commercial building. Retail and wholesale is considered, because the building need to be operated refrigeration system 24 h (Mylona et al, 2017; Gimeno-Frontera et al, 2018). We cannot evaluate only energy consumption, we have to concern repair and maintenance cost and long term operation cost
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