A transcritical carbon dioxide heat pump milk disinfection, cooling system and method
A carbon dioxide and transcritical technology, applied in heat recovery systems, energy-saving heating/cooling, milk storage, etc., can solve the problems of non-renewable energy waste, high milk processing costs, and greenhouse gas release, and achieve low milk processing costs. High production efficiency and energy saving effect
Inactive Publication Date: 2011-12-21
UNIV OF SHANGHAI FOR SCI & TECH
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Problems solved by technology
The present invention can overcome the disadvantages of existing milk processing technology, such as independent refrigeration and heating systems, coal-fired or electric heating, waste of non-renewable energy and release of greenhouse gases, low production efficiency, high milk processing cost, etc.
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[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.
[0019] A transcritical carbon dioxide heat pump milk disinfection and cooling system, such as figure 1 As shown: it is composed of compressor 1, gas cooler 3, regenerator 7, expansion valve 8, evaporator 10, gas-liquid separator 14 and pipelines in series, between compressor 1 and gas cooler 3 Three-way valve one 2 is connected to the pipeline, three-way valve two 6 is connected to the pipeline between gas cooler 3 and regenerator 7, three-way valve three is connected to the pipeline between expansion valve 8 and evaporator 10 9. Connect the three-way valve four 13 on the pipeline between the evaporator 10 and the gas-liquid separator 14; connect the milk disinfection device 4 in parallel on the pipeline between the three-way valve one 2 and the three-way valve two 6; The milk cooling device 11 is connected in parallel on the pipeline between...
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The invention discloses a transcritical carbon dioxide heat pump milk disinfecting and cooling system which comprises a compressor, a gas cooler, a heat regenerator, an expansion valve, an evaporator, a gas and liquid separator and a pipeline which are serially connected, wherein a three-way valve I is connected between the compressor and the gas cooler, a three-way valve II is connected between the gas cooler and the heat regenerator, a three-way valve III is connected between the expansion valve and the evaporator, and a three-way valve IV is connected between the evaporator and the gas andliquid separator; a milk disinfecting device is connected in parallel between the three-way valve I and the three-way valve II; a milk cooling device is connected in parallel between the three-way valve III and the three-way valve IV; a thermocouple temperature sensor I is arranged at an outlet of the milk disinfecting device, a thermocouple temperature sensor II is arranged at an outlet of the milk cooling device, and the outlet of the milk disinfecting device is connected with an inlet of the milk cooling device; if all three-way valves I, II and III are connected, the milk disinfecting device or milk cooling device is connected with the system; and if the three-way valves I and II are connected, the milk disinfecting device or milk cooling device is disconnected with the system. The transcritical carbon dioxide heat pump milk disinfecting and cooling system has the advantages of energy saving, high efficiency and low cost.
Description
technical field [0001] The invention relates to a transcritical carbon dioxide heat pump milk disinfection and cooling system and method. Background technique [0002] Milk is recognized as an ideal high-nutrition food so far. Drinking milk for a long time can increase nutrients, help the body digest and absorb, and play an important role in promoting health. However, the pathogenic microorganisms that may be contained in fresh milk include Mycobacterium bovis, Brucella, Salmonella and other miscellaneous bacteria. Therefore, fresh milk must be sterilized before it can be given to people for drinking. At the same time, in order to inhibit the reproduction of bacteria, the sterilized milk is lowered to a certain temperature according to the process requirements of different products. For cheese production and yogurt processing, it is generally required to cool down the milk to 37-44°C, while pasteurized milk requires the temperature to drop to about 2-5°C after sterilizatio...
Claims
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IPC IPC(8): A23C3/033A23C3/04
CPCY02B30/52
Inventor 周嘉伟吕静卢慧霞王金雨
Owner UNIV OF SHANGHAI FOR SCI & TECH