Розробка апаратів для первинної термічної обробки і холодильного зберігання харчових продуктів.

Experimental studies of combined refrigeration units of absorption type (ARU) with an additional heating chamber (AHC), which provides heat and refrigeration treatment of food in the home. A two-phase evaporative thermosyphon (TPTS) is used to provide thermal communication between the heat dissipating elements of ARA (reflux condenser). It is shown that the thermal power allocated in the process of ARU tests with TPTS, fixed on the lifting line of the reflux condenser, did not exceed 7 W, and on average was 4 ... 5 W; the magnitude of the heat flux dissipated from the ARU reflux condenser by TPTS is sufficient only to maintain the temperature in the AHC at 50 °C; to maintain the DNA temperature of 70 °C and 100 °C requires additional energy consumption; the value of additional energy consumption for 70 °C is 3.5 W, and for 100 °C - 8.7 W, while the daily energy consumption of the refrigerator will increase by 4.9% and 12.3%, respectively; with full use of the heat of reflux for heating AHC, it is possible to ensure its thermal regimes in the temperature range of 50 ... 100 °C; in the case of using AHC as the working medium, there are problems with heat transfer from the TPTS condenser to the internal volume of the chamber - in this case it is necessary to maintain the temperature difference between the heating panel and air in DNA about 25 ... 35 °C and the panel size should be not less than 0.200 × 0.285 m; in the case of using water as a working medium for AHC, it is advisable to use heating panels 0.2 m high, 0.02 ... 0.03 m wide, and to intensify heat transfer processes when heating water, the heating panel must be located at the bottom of the AHC; in the case of using air in AHC, its cooling due to heat loss to the ambient air is 32 times faster than when using water at an initial temperature of 50 °C and 11 times faster at an initial temperature of 70 °C. [ABSTRACT FROM AUTHOR]