Steam jet pump as a source of alternative energy in pulp industry technology

The development of energy-efficient heat pump technology in the oil and fat industry was preceded by systematic research aimed at studying the fundamental issues of energy saving in heat and heat and mass transfer processes of food technology using a steam jet heat pump. With the development of centralized refrigeration stations, steam-water ejector refrigeration units are increasingly used to supply chilled water to the spray chambers of air conditioners. The operating experience of such installations and technical and economic calculations show that the use of ejector refrigeration machines for industrial and technological needs and industrial air conditioning in some cases, especially in the presence of secondary energy resources and renewable energy sources, is more efficient than the use of other types of refrigeration machines. A steam jet heat pump creates real conditions for the utilization of low-pressure steam, in particular, waste heat from gas turbine plants and boiler units, and, as a result, allows you to effectively solve energy saving problems. Ecologically safe conditions for the functioning of the technology are due to the use of water as a refrigerant. The use of toxic, explosive and flammable working media is completely excluded, which allows us to consider the proposed heat pump technology of vegetable oils as environmentally safe. The use of this technology in the oil and fat industry will lead to an increase in the energy efficiency of the production of vegetable oils and the creation of a waste-free and environmentally friendly technology. The proposed line for the production of vegetable oil uses a steam ejector refrigeration machine operating in a closed thermodynamic cycle, while the working steam from the steam generator is fed into the ejector, part of the condensed vapors from the condenser through a thermostatic valve are diverted to replenishment were water into the evaporator, and the other part is fed into the steam generator through a pump. The process of cooling the product is carried out with water cooled in the cold receiver section with the supply of chilled water to the exposure jacket with return to the cold receiver section in the closed cycle mode.