Schematic Of Air Blast Freezer Download Scientific Diagram

Schematic Of Air Blast Freezer Download Scientific Diagram Download scientific diagram | schematic of air blast freezer from publication: thermal optimization of an ice cream hardening process | the conservation of energy is an essential step that can be. To reduce freezing times, cartons should use single layer cardboard with a high heat transfer coefficient on the top and bottom as this is where the surface area is largest. 7. air blast freezer operation and design air blast freezers are designed to supply cool air over the food product with a uniform air velocity throughout the freezer [23e28].

Schematic Of Air Blast Freezer Download Scientific Diagram Download scientific diagram | 2. air blast and fluid bed freezer. from publication: experiments in unit operations and processing of foods | unit operations and processing | researchgate, the. Air blast freezing is the process of taking a product at a temperature (usually chilled but sometimes at ambient temperature) and freezing it rapidly, between 12 and 48 h, to its desired storage temperature which varies from product to product (e.g. fish = −20 °c, beef = −18 °c). typically, the evaporator temperature in a blast freezer. Air temperature must be at least 35°c, and in some cases 45°c [32]. this equates to a refrigerant evaporation temperature of 42°c and 52°c respectively. for batch freezers, the literature offers several optimum air velocities dependent on the particular product being frozen. the generally accepted figure is 4 m s. Air blast freezing is an energy intensive process. for example, it was estimated that 8.1 gwh of electricity was consumed by air blast freezing in new zealand in 2005 (werner et al., 2005), which translates to 133 kwh ton, making it the most energy intensive operation in the production of many frozen foods.