The Importance of Using Solar Water Heater as an Alternative Eco-Friendly Technology in Global Market: Some Lessons of Experiences for Bangladesh Economy

Global Challenges of Current Building-Integrated Solar Water Heating Technologies and Its Prospects: A Comprehensive Review

“…Water heating has always been one of the essential systems in a household. It comes second after space heating and cooling as part of the most critical segment of the house [19]. It also accounts for the second-highest electricity consumption should electric heaters or geysers be installed.…”

“…It also accounts for the second-highest electricity consumption should electric heaters or geysers be installed. High energy use for water heating puts pressure on the national grid to overproduce electricity and harms electricity prices [19]. As electricity is most commonly produced by burning fossil fuels, the extensive use of electricity for water heating adds more to making harmful greenhouse gases.…”

“…From an economic perspective, SWH is an energy-efficient technology that benefits the users and communities in the long run. Users typically have to make an initial investment to purchase and install the SWH system, and the payback period is generally four to eight years [19]. Hence, after a few quick years, the users can start enjoying the hot water with minimal costs (after counting the maintenance costs that incur once every few years).…”

“…Strict law enforcement on the requirement to install solar water heaters on every new building in urban and rural areas brings significant growth to the industry. In this prospect, incentives and subsidies from the government promote further development of a country's SWH industry [19]. A city bylaw has also enforced installing solar water heaters in many households in South Africa.…”

“…A city bylaw has also enforced installing solar water heaters in many households in South Africa. Their solar water heater bylaw was strictly imposed on every new building that was being and will be built in the city, existing buildings that required extra water heating equipment, and all buildings that were going to be retrofitted [19]. The city bylaw is a highly effective mechanism to drive the implementation of SWH technologies and stimulate the SWH industry.…”