Use of effective intervention strategies is one of the significant approaches to achieve pro-environmental behavior changes. However, how the intervention strategies affect pro-environmental behaviors still remains unclear. The purpose of our research is to understand relationships among factors, intervention strategies, and intervention effects through systematic reviews of research papers on pro -environmental behaviors and household energy consuming behaviors. We reviewed papers in three research fields, that is, factors which determine energy consuming behaviors, intervention strategies to affect energy consuming behavior, and effects of interventions on the energy consuming behavior. The results show that, first, the factors are categorized as individual factors, socio-demographic factors, or situational factors. Then the intervention strategies are categorized by the instrumentality into three types, information based intervention, structural intervention, or gamification and monetary based intervention. Moreover, another category is the timing which has three types, antecedent, contingency, and combination of antecedent and contingency. Finally, the effect of interventions is commonly measured by electric power consumption. Another way is to compare multiple research papers by meta-analysis. Several consumer classifications are also used to understand partial effects on behavior changes. Based on these results, we made a conceptual model which describes the relations among intervention strategies, factors, behavior changes, and intervention effects for energy consumption in household.

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Electricity is one of the cleanest forms of final energy. With the growth of economy and industrialization, many of the developing countries face increased demand of energy and electricity. In order to meet the growing demand in an economically efficient way, proper prediction of hourly load and appropriate planning is important. Bangladesh being one of the developing countries, experienced steady economic growth and increasing electricity demand over the last decade. Electricity generation has increased more than twice and share of people having access to electricity reached from 47% in 2009 to 94% in 2019. So far, the household sector is the main contributor in electricity consumption. However, as the access to electricity reaches saturation, industry and service sectors would play significant role in coming decades in terms of both electricity consumption amount and pattern. In this study, we analyze the projected electricity demand from the year 2020 to 2050 at an interval of 5 years and decompose the total demand into sectoral contribution from household, industry, service and other sectors. In addition, the hourly load demand pattern of each sector has been synthesized so that the overall changes in the daily electricity demand pattern for different seasons could be identified.

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In a commercial refrigerating system, the contribution to the environmental eco-burden mitigation would be desired. GF-08 of hydro-carbon refrigerant is eco-friendly. Because the environmental impacts of propane and propylene of which GF-08 composes are generally lower in comparison to the conventional ones. In this study, for the commercial refrigerating facility, the energy saving and environmental analyses were executed. Also, in order to obtain the additional benefit, the ground source heat was considered. The energy demand was evaluated by the thermal load simulator of Building Energy Simulation Tool BEST, and energy performances were estimated in variation of refrigerants. Note that the performances were done by the annual basis and that the climatic and other conditions were the same ones. As a result, in comparison of GF-08 to R410A, which is a conventional one, it was found that the advantage on energy saving was achieved by 7.8% in annual basis, and that the GHG emissions on LCA basis were mitigated by 8.6% in annual basis. In addition, the alternation of GF-08 would contribute to the abatement of indirect GHG emissions.

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