Abstract
The use of natural gas in the heat treatment of feed reduces the cost of livestock products and increases competitiveness in the foreign market. An analysis of various modifications of gas-using digesters with a wide range of performance and design, offered by the foreign market, showed that their common disadvantage is the lack of automatic gas flow control in proportion to the heat flow used to heat the feed to boiling and during boiling. An energy-saving fodder boiler with an automatic gas flow control system in proportion to the consumed heat flow has been developed. The studies were carried out on an experimental sample of a feed boiler, in which an automated gas flow control system based on semiconductor thermoelectric elements acts on the actuator without intermediate output signal amplifiers. The efficiency of the automated energy supply system was studied by experimental studies of the dynamics of gas consumption in the process of thermal processing of feed in automatic and manual modes. It was found that the total gas consumption for the preparation of 100 kg of feed in automatic mode with gas flow control proportional to the consumed heat flow is 1.2 times less than when the boiler is in manual mode. The most optimal mode for saving fuel is provided when setting the gas burner in the initial period of heating up to a power of 14 kW for a digester with a volume of 100 liters. Gas overrun up to 20% occurs for boilers with more powerful gas burners (22 kW).
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