GLOSSARY 

 

Compressor

One of the core components of a heat pump, increases the pressure of the refrigerant and therefore increases the temperature, three compressor manufacturers are part of the DryFiciency team (Bitzer, Viking, Rotrex). 

COP

Coefficient of performance, most common performance indicator of a heat pump, ratio of delivered heat to the energy consumption of the heat pump (usually electricity for the compressor). 

GWP

Global warming potential, describes the relative contribution to global warming of a greenhouse gas released in the atmosphere, calculated in terms of the 100-year warming potential of one kilogram of a greenhouse gas relative to one kilogram of CO2. 

HFO

Hydro fluoro olefin, recently developed 4th generation of refrigerants with low GWP. 

MVR

Mechanical vapor recompression, also known as open loop heat pump. 

R-1336-mzzZ

Synthetic refrigerant based on hydro-fluoro-olefins, produced by Chemours and used in the closed loop heat pump

R718

“Refrigerant name” of water, used in the open loop heat pump.

Refrigerant

Working media of a heat pump, undergoes phase changes from liquid to gaseous transporting heat from the heat source to the heat sink.

SEC

Specific energy consumption, used to describe the efficiency of dryers, calculated as the ratio of removed water from the product to the amount of energy consumed by the dryer.

SHS

Superheated steam dryer, goods are dried in a steam atmosphere, typically used for food products, removed water from the product available as low pressure steam, application of the open loop heat pump to increase efficiency. 

Waste heat

Heat created as an unavoidable byproduct in a production or power generation process that is released to the environment without any further use. Waste heat recovery increases process efficiency. However, the usability of waste heat significantly depends on its availability, temperature range and process requirements.

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