Renewable energy (RE) is the potential solution to the current world's problems pertaining to the energy crisis and environmental concerns. Like other countries Bangladesh, which is currently starving for energy, has given more importance to RE especially solar energy to mitigate the energy-related problems. According to RE policy of Bangladesh, the targeted RE share was 5% to be achieved by 2015 (500 MW). At the beginning of 2018, the country was able to install ~506 MW from RE sources (3.10%), in which significant portion comes from solar energy. The factors that contributed mainly to achieve the target are government policies and initiatives, international influence, solar panel price reduction, private sector participation, public awareness. In this study, the influences of these factors have been discussed. Besides, the technologies implemented for the fulfillment of RE share target has been analyzed.

Adsorber heat exchanger design has great importance in increasing the performance of the adsorption-based cooling system. In this study, a transient two-dimensional axisymmetric Computational Fluid Dynamics (CFD) model has been developed for the performance investigation of finned tube type adsorber using activated carbon and ethanol as the working pair. The operating conditions of the cooling system were 15, 20 and 80 for evaporation, cooling and heating temperatures, respectively. The simulated temperature profiles for different adsorbent thicknesses were validated with those from experimental data measured in our laboratory. Moreover, the error in mass and energy balance were 3% and 7.88%, respectively. Besides, the performance investigation has been performed for cycle time ranging from 600 s to 1400 s. The optimum cycle time was 800 s and the corresponding evaluated specific cooling power (SCP) and coefficient of performance (COP) were found to be 488 W/kg and 0.61, respectively. The developed CFD model will be used for fin height and fin pitch optimization and can be extended to other adsorbent-adsorbate based adsorption cooling system.

No abstract

Purpose: The purpose of this study is to investigate the effect of celebrity endorsement components (expertise, attractiveness, and trustworthiness) on brand attitude, brand loyalty, and purchase intention. This study looks at the elements of celebrity endorsements that influence young consumers' purchasing preferences in the Barishal region of Bangladesh. Methodology: The study model incorporates constructs from earlier literature that have been proven to have substantial relations with purchasing intention. A self-administered questionnaire has been used through an online survey to collect 205 data from young people aged 20 to 24. Additionally, SPSS has been used to analyze the data. Findings: The study demonstrates that celebrity expertise and trustworthiness significantly influence brand attitudes and brand loyalty. However, celebrity attractiveness is not much impacted by brand attitudes and brand loyalty. The study also demonstrates that brand loyalty is the most substantial influence on purchase intention. Practical Implications: The findings of this study will help producers, marketers, merchants, and advertisers figure out what traits of a celebrity contribute to a favorable brand attitude, brand loyalty, and buy intention. Originality: This paper empirically examines how different variables affect celebrity endorsement’s influence on the buying behaviour of consumers’ decisions of young customers. Research Limitations: In this study, the respondents are young, so the findings may not be applicable on a general basis.

Purpose: The purpose of this study is to investigate the effect of celebrity endorsement components (expertise, attractiveness, and trustworthiness) on brand attitude, brand loyalty, and purchase intention. This study looks at the elements of celebrity endorsements that influence young consumers' purchasing preferences in the Barishal region of Bangladesh. Methodology: The study model incorporates constructs from earlier literature that have been proven to have substantial relations with purchasing intention. A self-administered questionnaire has been used through an online survey to collect 205 data from young people aged 20 to 24. Additionally, SPSS has been used to analyze the data. Findings: The study demonstrates that celebrity expertise and trustworthiness significantly influence brand attitudes and brand loyalty. However, celebrity attractiveness is not much impacted by brand attitudes and brand loyalty. The study also demonstrates that brand loyalty is the most substantial influence on purchase intention. Practical Implications: The findings of this study will help producers, marketers, merchants, and advertisers figure out what traits of a celebrity contribute to a favorable brand attitude, brand loyalty, and buy intention. Originality: This paper empirically examines how different variables affect celebrity endorsement’s influence on the buying behaviour of consumers’ decisions of young customers. Research Limitations: In this study, the respondents are young, so the findings may not be applicable on a general basis.