Solar Hot Water In The Wine Industry

The concept of using of solar hot water systems arise from the need to convert or

replace the production processes of various industries, which minimizes production costs and reduces CO2 emissions.

This article will discuss how to use solar hot water system in the wine industry.

The wine industry is a huge business that uses lots of water for sterilizing and for fermenting processes. Although the actual cost of water is cheap, the energy used to heat the water whether it is electric, natural gas, oil or wood is getting more expensive. Therefore the use of solar hot water systems like the SolarBeam is of interest to wineries looking to reduce energy usage.

In order to understand how the SolarBeam can reduce operational costs, we need to understand the wine industry. There are stages in the winemaking process, where it is necessary to maintain low temperatures for storing supplies. These cooling processes are characterized by high energy usage and water consumption, and the toxicity of refrigerants. On the other hand, solar hot water heating is needed for disinfection. In the cellars, as in any food industry, it is necessary to maintain sanitary conditions. Cleaning and disinfection of equipment and buildings requires the use of large volumes of hot water.

As discussed above the large amount of hot water used for cleaning equipment, tanks, bottles, etc. is usually heated by combustion boilers that produce large amount of gases that contribute to global warming. In addition, with the price fluctuations occurring for conventional fuels, it is becoming increasingly popular to reduce costs by using technologies such as solar thermal This takes advantage of solar energy to heat the water at high temperatures, up to 95 C (204 F), sufficient for use in such processes, like sterilization. Since technologies like SolarBeam can track the sun, various water temperatures can be maintained because the system can stop tracking the sun once the desired water temperature has been reached. Through the use of a heat exchanger, various hot water tanks can store temperature at different temperatures and the SolarBeams can be programmed to heat the water until the desired temperature has been reached. This type of flexibility is not available with flat panels because they cannot rotate and they cannot stop collecting energy, because they cannot be moved or covered.

For applications that require water temperatures above 65 C, technologies like the SolarBeam can offer payback of approximately 6 years, depending on the type of solar radiation available. In contrast, flat panels for the same project would be closer to a 20 year payback and evacuated tube, 15 years. To see what the direct solar radiation is in your area, go to www.solartronenergy.com to see an interactive map.

by: Jeremy Peters

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