Masthead - Climate Control Journal

Region: Europe

Frascold, Solid Energy in district energy initiative

The manufacturers of semi-hermetic compressors and renewable energy- powered heat pumps, respectively, say they are collaborating to execute projects in Denmark


MILAN, Italy, 19 April 2022: District heating systems could be a key technology in achieving the
international climate mitigation goals, both those laid out in the Paris Agreement and the more
stringent ones set by the European Green Deal. Saying so, Frascold, which manufactures semi-
hermetic compressors for the industrial refrigeration and air conditioning sectors, said it has
combined with Solid Energy, which specialises in heat pumps powered by renewable energy
sources, to contribute to the diffusion of district heating and pave the way to an ecological
transition by signing up to numerous projects in Denmark.

Amongst the most recent partnerships, upgrading the Galten plant in the Scandinavian country
stands out, Frascold said. The plant has been in operation since 1964 and is capable of
powering approximately 2,130 homes, Frascold highlighted. The collaboration between
Frascold and Solid Energy for the Galten facility began in 2019 with the creation of a system
able to produce 45,000 MWh per year, obtained from 6 Frascold CXH screw compressors,
suitable for use with HC, for 3.5 MW of overall power. The subsequent expansion, in 2021, saw
the addition of 12 CXH compressors for an increase in power of 7 MW, Frascold said. The
installed air-water heat pumps absorb heat from the outside air with 34 air coolers for a total of
3,215,000 m 3 /h and cover 98% of the district heating system’s power consumption – that is,
44.343 MWh – with a SCOP (Seasonal Coefficient of Performance) of 3.11, Frascold said. The
plant provides a discharge temperature of 70 degrees C with a return of 38 degrees C, thus
achieving a COP of 3.4 calculated by considering an outside air temperature of 8 degrees C,
which is the annual average in Denmark, Frascold said.

“We think HC heat pumps are ideal for helping reduce the comfort sector’s environmental
impact,” said Karsten Pedersen, Technical Director, Solid Energy. “Cascade systems with R290
and R600a guarantee the best balance of lowering direct and indirect consumption, flexibility of
use and costs. So, for this project, we relied, once more, on Frascold, which has supported us

throughout each phase, and thanks to the constant dialogue with the Competence Center
team, we have designed the ideal system to respond to the three challenges: Sustainability,
performance and efficiency. The partnership with Frascold is also based on the certified
reliability of its wide range of hydrocarbon solutions: It is, in fact, the only manufacturer on the
market with compressor sizes around 1,000 m 3 /h, which are perfect for our project and comply
with ATEX directives for use in zone 2.”

Fabrizio Diotallevi, Frascold Sales Area Manager, North Europe, said: “Denmark is one of the
most advanced countries in terms of district heating, and approximately 1.7 million homes, or
64% of the total, are powered by these systems, of which 61% already use energy from
renewable sources. A continuous improvement process is in line with the objective to
completely eliminate fossil fuels in the segment by 2030. With the numerous plants brought
online with Solid Energy, we are proud to contribute to this ambitious project, which we hope
will be replicated in other countries. This new success story with Solid Energy is another
example of our expertise in building heat pump compressors, which we have gained through
years of international partnerships using this technology that, in the near future, will be the
basis for virtuous heating and zero environmental impact.”

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