Solar Thermal

How to Integrate Solar Heat into Industrial Processes

An integration concept for direct solar steam generation from the IEA Guideline. (Graphic: IEA SHC)

Solar process heat is an upcoming new business field for the solar thermal industry. The IEA SHC Programme and the IEA SolarPACES Programme have now developed guidelines that describe in detail how to incorporate solar heat into industrial processes.


Things you need to know about the new heating label!

The efficiency label for new heating systems, water heaters and heat storage systems went into effect on 26 September. Many specialist publications, including our own, have been reporting on the topic for months. Trade associations have also been flooding the market with information, making it hard to keep track. For this reason, we decided to put together a summary of the most important points.


A frugal place to unwind

In the Goona mountain restaurant you can relax at the fire­side after a day on the slopes. Still, it is worth to give a second thought at how the energy consumed up in the mountains has been generated. (Photo: Fortner ­Speichertechnik)

The mountain restaurant Goona needs to draw 450 kWh of energy every day to supply its guests with good food in a cosy dining room. To cover that demand, it taps into three environment-friendly sources: the power of the sun, the fire of a wood-burning stove, and the waste heat from a refrigeration system. The three complement each other perfectly. Here you can see how:


Improved large-area collectors from Solvis

The double meander in the Fera 803 I AR reduces the pressure loss and increases the yield. (Photo: Solvis)

Solvis recently introduced three new large-area collectors. According to the manufacturer, they are improved versions of the existing range of large-area collectors in different sizes that achieve significantly higher yields than previous models.


Collector with newly-developed pipe hydraulics

The parallel meander used in the KS 23-13 reduces pressure loss compared to models with single meanders. (Photo: Solmetall)

Solmetall GmbH is introducing a new flat plate collector with a surface area of 2.32 m2 that has improved hydraulics for lower pressure losses.


The collector label is misleading

Uwe Trenkner began his career in solar thermal as a project manager at the European Solar Thermal Industry Federation ESTIF in 2002. From 2005 to 2009, he served as secretary general of the association. He now works as a consultant for the solar thermal industry. He is also co-founder of the job platforms and (Photo: private)

The solar thermal industry is debating whether it should introduce its own efficiency label for solar collectors. Uwe Trenkner, who was secretary general of the European Solar Thermal Industry Federation ESTIF from 2005 to 2009, explains in a commentary why he rejects this idea.


Solar Thermal in New York: A Significant Role

Solar thermal systems in New York City do not only profit from a clear sky but also from the new incentive programme, which started in March in New York State.  (Photo: Pixabay/PredragKezic)

A revised incentive programme in New York State has increased the number of installations of solar thermal systems that replace fossil fuels and electricity. Now, the programme’s financial resources are already nearly exhausted.