Solar Hot Water Use in Textile, Paper, poultry Feed and etc. Industry
Why is solar hot water not utilized as an opportunity to reduce energy costs in industries such as dyeing or those using boilers, despite its potential advantages? whereas:
Solar hot water systems can effortlessly provide hot water at temperatures ranging from 60 to 70 degrees Celsius, harnessing the power of sunlight without the need for expensive fuels.
Even higher temperatures, around 90 degrees Celsius, can be achieved with a straightforward solar water heating setup.
The availability of insulated storage tanks allows for the continuous use of hot water, enabling round-the-clock operations.
Integrating a solar hot water system into the boiler makeup process can replace the standard practice of feeding cold water at approximately 28 degrees Celsius, with a significantly higher temperature of around 70 degrees Celsius.
A practical approach could involve initially installing a smaller solar hot water unit tailored for specific applications like washing, resulting in reduced steam consumption.
Starting with a smaller-scale implementation provides a cost-effective trial, which can later be expanded based on the observed benefits.
While there are solar water heating systems available, some people perceive the installation cost as a deterrent, with a return on investment (ROI) estimated to take around 5 to 6 years. Additionally, concerns have been raised about the lengthy heating time, taking approximately 8 hours.
However, it is worth noting that with efforts focused on optimization, the cost of installation and heating time can be significantly reduced. The payback period, for instance, could be shortened from 5 to 1.5 years. The research and development team of the industry may also reduce the payback time to 1 year too.
Factors influencing the cost include:
- The number of solar systems required, which in turn depends on their usage pattern whether during the day or night.
- The type of system chosen, such as tankless or equipped with insulated tanks, depends on the duration of the hot water requirement.
- To initiate the process, a smaller solar hot water system can be piloted, and accurate data is required to design it effectively:
- The desired water temperature is in degrees Celsius.
- The quantity of water required during nighttime hours in liters.
- The total volume of water needed during the night shift.
- The cost associated with water heating using conventional methods.
- To reduce system cost, a small cost-effective unit can be designed and made in mill work.