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Effective technology reduces hospital’s climate footprint

Climate experts in the north
NHS-juni-2022-marina-foto-Polarnatt-Finnmarkssykehuset-web-2

When the new Finnmark Hospital in Hammerfest becomes opera­tional in January 2025, heating and cooling for a building of more than 33 000 square metres will come primarily from seawater and natural refri­gerants. PTG is respon­sible for delivering environment-friendly technology. Photo: Polarnatt.

Seawater, natural refri­gerants and broad climate expertise. When the new Finnmark Hospital in Hammerfest is installing it’s energy systems, PTG puts its knowledge and technology into use to reduce both green­house gas (GHG) emissions and energy consumption.

With its head office in the north Norwegian city of Tromsø, PTG – Perfect Tempe­rature Group – comprises a nationwide and increas­ingly inter­na­tional team of experts in refri­ge­ration technology. It supports both commercial and public-sector enter­prises in switching to more environment-friendly solutions, and is now in full swing in Hammerfest.

Energy from sea
The environment is taken precisely into account in the solutions chosen throughout the new hospital in Hammerfest. When it is ready to open in January 2025, heating and cooling for a building covering more than 33 000 square metres will derive primarily from seawater and natural refrigerants.

“Selecting solutions which utilise natural gases is enshrined in the hospital’s functional speci­fi­cation for both financial and environ­mental reasons,” explains Richard Olaussen, project manager at Consto and respon­sible to the client for the hospital’s energy centre.

The Hammerfest facility is due to meet about two-thirds of its cooling and heating require­ments from seawater at a tempe­rature of 6–7°C, with the aid of two large ammonia pumps and heat exchangers.

“This is a very effective method, which signi­fi­cantly reduces the hospital’s energy consumption,” reports Olaussen.

No negative environ­mental effects
Martin Corne­li­ussen is PTG’s project manager respon­sible for the technology involved and instal­lation of the indoor climate control system at the Hammerfest hospital.

“In addition to a high level of energy efficiency, ammonia is a very environment-friendly refri­ge­ration medium,” he says.

Its climate effect is demon­strated through its global warming (GWP) and ozone depletion (ODP) poten­tials. Natural refri­gerants such as ammonia and CO2 have low or no documented negative effects on the environment.

“Ammonia has a zero value for both GWP and ODP,” Corne­li­ussen explains. “By compa­rison, leaks of synthetic refri­gerants, such as hydro­fluo­ro­carbons (HFCs), will be very negative.”

Martin Corne­li­ussen is respon­sible for PTG’s delivery of environment-friendly climate technology to the new Finnmark Hospital in Hammerfest. Photo: David González.

Heart of the hospital
He describes the energy centre as the very heart of the technical arran­ge­ments in the new hospital.

“Demand-controlled cooling and heating are pumped out to the building’s many technical instal­la­tions through a big network of piping systems. At the same time, waste heat is recovered and conducted back to the system, ensuring that no energy is lost.”

In parallel, Corneliussen’s team is installing a number of refri­ge­ration and freezer equipment for the 11 refri­ge­rator and freezer rooms being provided for such functions as catering, storage and laboratories.

CO2 has been selected as the refri­gerant for these rooms, and Corne­li­ussen is pleased that a natural medium is also chosen here.

“In addition to being environment-friendly, natural media have thermo­dy­namic properties which contribute to high efficiency factors – in other words, larger amounts of energy are obtained per unit of energy supplied. This combi­nation makes both environ­mental impact and energy consumption low.”

“Our goal is to be the best at providing advice, instal­lation and service for forward-looking and sustai­nable climate and refri­ge­ration solutions,” says Martin Schjølberg, vice president of sales and marketing for the commercial and climate market at the PTG group. Photo: Photo­grapher Marius Fiskum.

Stricter environ­mental standards
Building expertise with natural refri­gerants is an expressed goal for PTG, reports Martin Schjølberg, the group’s vice president of sales and marketing for the commercial and climate market. He notes that the EU’s F‑gas regulation aims to reduce the use and emission of green­house gas by two-thirds in 2030.

“We will see ever stricter demands related to this issue in coming years,” Schjølberg says. “Supporting our customers in switching to environment-friendly alter­na­tives is therefore important for us.

“Our goal is to be the best at providing advice, instal­lation and service for forward-looking and sustai­nable climate and refri­ge­ration solutions. We’re pleased that we can now also contribute to our health insti­tu­tions and the new hospital in Hammerfest.”

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