A CO2 Water-to-Water Heat Pump is Unveiled by a Norwegian Firm

Tequs, a company located in Norway, has introduced a new plug-and-play CO2 heat pump for residential and commercial use that works with water.

The CEO of the company, Joakim Søgård, stated, “Our new heat pumps are modular and can be used in parallel to achieve higher capacities.” “The units come pre-filled with CO2 and oil and are ready to use. The machines are very user-friendly, thanks to a large touchscreen with an easy-to-use user interface for service and maintenance.”

When both sides are used, the system design permits simultaneous heating and cooling, according to the manufacturer. According to reports, it can withstand return temperatures of up to 50 C or 60 C when a hydronic kit is utilized.

Søgård continued, “The products stand out particularly in that they can deliver up to 90 C of heat for space heating, air conditioning, and domestic hot water while handling the high return temperatures required when you retrofit a heating system designed for fossil fuel heating,” “This is far above what others have managed before us. We can accept up to 50°C in return while maintaining a good coefficient of performance (COP).”

The heat pumps come in eight models, with capacities ranging from 17 kW to 268 kW, and are equipped with R744 (CO2) as a refrigerant.

The smallest product, known as TCHP 17, has a voltage of 400 V and dimensions of 1,462 x 690 x 1,913 mm. It is said to have an 18 kW heating capability and a 17 kW cooling capacity. 5.0 and 4.4, respectively, are the COPs for heating and cooling.

The biggest system, with the designation TCHP 268 on it, measures 2,357 x 690 x 1,913 mm and operates at 400 V. It has a 268 kW heating capacity and a 267 kW cooling capacity. According to the manufacturer, the values for heating and cooling coefficient of performance are 5.4 and 4.5, respectively.

The new heat pump series is especially good for hotels, commercial buildings, residential complexes, swimming pools, and industrial buildings, according to the company.

“Our goal has been to develop a series of heat pumps that are particularly well-suited for a heating system where a gas boiler is to be replaced,” Søgård clarified. “We started the project in 2020 and have been actively working for now four years. The product has gone through many different prototype stages, both in the laboratory and in the field, and was recently at the Norwegian Refrigeration Technical Annual Conference.”