Removing reliance on non-renewable energy sources through solar water heaters is a promising and cost-effective approach to mitigate the impact of over-reliance on dirty energy sources. The growing concern about climate change and scarcity of fossil fuels has directed the world towards energy-efficient solutions.
Solar water heaters, a type of solar thermal energy, use solar radiation to heat water for various purposes including domestic use. This energy-efficient solution is considered an attractive solution for global energy challenges as it requires low operational costs, can provide hot water during on-site generation, and can be easily scaled up or down in terms of power and capacity.
A well-designed thermal energy system consists of a solar collector a circulating pump a circulating pump and a storage tank. The heat exchanger is the key component of the system, absorbing and converting sunlight into energy. The solar water heater works in two cycles: the heating phase and the rejection phase. During the thermal phase, the key component heats the fluid in the storage tank, and in the cooling cycle, the heated water is pumped into the household for actual use. Conventional heat pump systems also improve output by using a second hotter water to heat the system whenever possible.
Implementing massive solar water heater installations can significantly reduce the electricity consumption. Data suggests that, for every 0.5 MW of solar water heater capacity installed, the demand for utility electricity from utility companies is decreased by at least 1.2-1.5 MW.
In emerging markets, such renewable energy sources can save individuals a significant amount of money on their utility bills.
It is estimated that large-scale adoption of solar water heaters could reduce global electricity consumption by 8-15% by 2025, saving over $1.1 trillion in electricity costs.
With such truly beneficial advantages associated with solar water heaters, governments worldwide should prioritize and invest heavily in developing solar water heater technologies, providing support for production and large-scale deployments.
However, current global markets are lacking the competitive pace on solar thermal technologies, driven primarily by the development and advertising of renewable energy technologies. Governments must therefore provide urgent attention and subsidies to energy-efficient technologies, besides focusing on eliminating administrative burdens for industry leaders to step into the commercial energy markets.
Increasing the demand for solar water heaters will also heighten career advancement worldwide, and push down wages in solar manufacturing industries while increasing growth prospects among the companies in this area. So the introduction of solar water heater technologies will undoubtedly prove pivotal for saving electricity consumption and making a significant difference in solving one of our most enduring environmental problems.