Researchers Advanced Solar Thermal Energy Potential
New developments in heat pump systems aim to meet industrial demands for temperatures between 120 and 200 degrees Celsius.
Updated on Sept. 21, 2026 in Energy
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Researchers from the University of Guanajuato and Texas A&M have achieved temperatures of 155.6 degrees Celsius using solar thermal collectors and ethanol-based heat pumps. This innovation seeks to address the gap in solar thermal technology, which often struggles to provide the high heat required for industrial applications.
Why it matters
Many industrial processes require temperatures between 120 and 200 degrees Celsius, but standard solar thermal systems frequently fall short of these thresholds. Successfully reaching these levels could replace carbon-heavy heat sources, with the new system estimated to avoid 3,613 tonnes of carbon dioxide emissions annually.
The ethanol-based system demonstrated a coefficient of performance of 4.64 and an exergy efficiency of 74.4 percent. The configuration utilizes solar collectors to heat water to 99 degrees Celsius before evaporating ethanol in a heat pump.
The players
University of Guanajuato
This is a public research university located in Mexico that conducted the ethanol-based solar thermal research.
Texas A&M
This is a public research university in the United States that collaborated on the solar thermal and heat pump study.
Ministry of New and Renewable Energy
This is the Indian government ministry responsible for the development and promotion of renewable energy sources.
The details
The ethanol-based system features a simple payback period of 8.5 years, providing a viable financial pathway for industrial integration. Additionally, research teams from Spain, Italy, and Switzerland are modeling a compressed air energy storage system that uses solar thermal energy to reheat air and prevent turbine freezing during discharge.
Timeline
September 21, 2026: The Ministry of New and Renewable Energy issued a call for proposals for concentrating solar thermal technology.
The Big Picture
This innovation follows the precedent set by the historical integration of concentrated solar power with thermal storage by demonstrating new thermodynamic pathways for industrial heat.
This development could eventually lead to lower industrial operating costs and reduced carbon footprints for manufacturing sectors reliant on thermal energy. The potential for cost-effective heat could influence the long-term pricing of goods produced through heat-intensive industrial processes.
The takeaway
Advancing solar thermal technology to bridge the gap in industrial heating requirements is a critical step toward decarbonizing heavy industry. Technologies like ethanol-based heat pumps provide a clear, measurable path toward high-efficiency energy reuse.
Further reading
For more information on the evolving landscape of sustainable power, visit the Energy section.
Source note: This article includes information reported by @businessline.
Live Poll
Do you believe new solar thermal technologies can reliably meet industrial heating demands?
