Solar Thermal Systems

Solar energy definitely saves energy costs, creates an environmentally friendly image for those who apply it, and is very economic and easy to obtain.

Utilization of solar energy to produce hot water on a small scale such as  in homes or on a large scale such as in as hotels, factories, hospitals and other commercial establishments has become increasingly popular, especially in the last decade. Effectively using solar energy saves fuel, solves or pushes back the energy crisis and helps protecting the environment, especially in regions where solar energy is available abundantly like in Thailand and other tropical countries.

ENVIMA provides engineering services, system design and installation, together with our state of the art products, designed in Germany and tested and certified in Switzerland at the SPF Institute, to make sure you receive high quality solar water heater systems.

How solar heating systems work

In order to heat water using solar energy, solar collectors are made to absorb solar radiation through its selective surface coating, which raises the temperature of the water in the collector. Then, the heated water flows back to a hot water storage tank. In the hot water storage tank, cold and hot water is layered, since cold water is added to the tank in the lower part while hot water is collected in the upper part - this remains a stable layering. Circulation pumps and electronic controllers help to pump the heated water from the collectors at a defined temperature to the storage tank, whenever the temperature in the tank is lower than the defined temperature at the collector.

Example of a closed-loop system for a hotel

Calculation, Layout and Design of Solar Systems by ENVIMA

The exact engineering of a solar system is crucial for its performance and reliability, because solar systems depend on the sun and don't perform continuously like boilers do. Unpredictable daily and seasonal climatic variations make the correct configuration of such systems a challenging task. In order to design an optimal system, ENVIMA uses world-class simulation software that takes all relevant regional and project-specific data into account.

For more information

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