As of today, heat pumps are installed for industrial use, recycling energy for low temperature purposes (60-90oC). However, very few installations take advantage of recycling energy to high temperature industry processes of 100oC and above. Two of the main reasons are the technology limitation of the traditional heat pumps to deliver heat at interesting temperature above 100°C and the required payback time. The fact that the SPP HighLift heat pumps have already overcome these hurdles opens a number of major applications for the SPP technology.
One major difference to traditional heat pumps is the tolerance to externally created fluctuations in operational conditions of the SPP HighLift technology. The concept is not easily copied, as the thermal process of the SPP HighLift technology is very difficult to model and design.
The SPP HighLift technology can easily be applied in various configuration and works well with other energy optimization technologies and traditional heat pumps. The technology is easy to integrate into existing energy systems and may remove bottlenecks as well as improve capacity of systems already in place.
Food industry In the food industry where heating and cooling processes in the range of SPP Stirling technology are needed, the system can be utilized with higher efficiency.
• Dairy processes need a lot of heat at medium temperatures for pasteurization, sterilization, ultra high temperature treatment as well as cooling for storage of the finished product.
• Abattoirs are using energy for cooling, drying and sterilization
• Brewery processes like hops boiling, whirl-pooling, cooling, fermentation need either heat temperature around 100°C or cooling near 0°C. Both temperatures being well inside SPP HighLift specifications.
• SPP HighLift is also suited for the bakery processing. Baking, pasta drying, cooling and storing would need heat above 100°C and cooling at the same time.
• Sea-food industry has multiple applications for SPP HighLift in their production chain. Production of fish feed for the aquaculture industry contains a lot of energy demanding drying-processes. The fish slaughterhouse process needs hot water or stem together with the need for freezing and cold storage. Production of fish/marine oils uses evaporation technology with high heat and cooling demands with temperature profiles well suited for SPP HighLift
Process industry Very high temperatures are used in the process industry to refine their products. Many participants in this industry have already implemented recycling technologies for high temperatures, but few have addressed the medium temperature range from 80 °C up to 200°C. Some of the most interesting verticals for SPP HighLift technology are: • In the chemical industry, steams are used for many purposes; stripping, fractionation, quenching, separation, dilution, distillation etc. Production of ethylene and ammonia are one of the most steam consuming processes in the chemical industry.
• Building materials production, such as gypsum boards, is energy demanding with calicinating process and drying. Both processes require temperatures well suited for energy recycling with the SPP HighLift. In addition, production of expanded polystyrene products need steam while it produces waste heat the SPP HighLift can recycle.
• Numerous processes within the oil refining industry have temperature levels within the SPP HighLift range. The huge energy flows in refineries also calls for many SPP HighLift engines at one single location.
• Pulp and paper manufacturing is an energy intensive industry where 75 % of the fuel energy is converted to steam production. Steam is mainly used in chips preparation, digesting, bleaching and pulp and paper drying.
District heating • SPP HighLift can be applied for district heating system or in combined district heating and cooling. Typical heat sources and heat sinks for heat-pump based district heating are seawater, ground water, rock or sewage.
• In district heating, the SPP HighLift enables the provider to deliver steam to industrial customers within their own network coverage. These types of customers often have huge demand for heat energy, and can increase the utilization of a district heating systems substantially.
Waste incineration • Within waste incineration, SPP HeatPower is a converter of heat energy to electric power. In waste incineration plants, SPP HeatPower may produce electric power from the heat at a good efficiency, without being sensitive for variations in temperature and available heat or cooling.