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Basics of Industrial Heat Pumps 3-40 Heat pump technology Figure 3-6: Thermal vapor recompression, Example from Japan The TVR type is available in all industrial sizes. A common application area is evaporation units. The COP is defined as the relation between the heat of condensation of the va- pour leaving the TVR and heat input with the motive vapour. 3.2.5 Thermo acoustic (TA) The acoustic energy is subsequently being used in a TA-heat pump to upgrade waste heat to usable process heat at the required temperature. The picture below visualises the whole system. The TA-engine is located at the right side and generates acoustic power from a stream of waste heat stream at a temperature of 140 °C. The acoustic power flows through the resonator to the TA-heat pump. Waste heat of 140 °C is up- graded to 180 °C in this component. The total system can be generally applied into the existing utility system at an industrial site. Figure 3-7: Thermo acoustic heat pump 3.3 Refrigerantssuitableforhightemperatureheatpump Many industrial processes have heating demands in the temperature range of 90-120 °C. At the same time, waste heat holding typically a temperature of 30-60 °C is available. Efficient heat pumping technologies are therefore attractive in order to reduce the spe- cific energy consumption (kWh/product amount). The present, most common refriger- ants, in particular HFCs are limited to heat distribution temperatures of around 80 °C. For temperature above 100 °C additional R&D is required.PDF Image | Industrial Heat Pumps
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