42results about How to "Uniform heating rate" patented technology

The invention provides a thick film heating element with high double-sided heat conduction capability. The thick film heating element is characterized by comprising a carrier, a thick film coating which coats the carrier, and a covering layer covering the thick film coating, wherein the thick film coating is a heating material; the heating mode is electric heating; and material selection of the covering layer, the thick film coating and the carrier meets the inequations as follows: Q2 is greater than or equal to Q3, Q2 is greater than or equal to Q1, Q1 is equal to a*Q3, Q2 is equal to b*Q1 and Q2 is equal to c*Q3 in a heat transfer process, wherein a is smaller than or equal to 150 and greater than or equal to 0.1, b is smaller than or equal to 2500 and greater than or equal to 1, and c is smaller than or equal to 10,000 and greater than or equal to 100. The thick film heating element has high double-sided heat conduction capability, double-sided heating is relatively uniform and the heat transfer efficiency is improved. The thick film heating element provided by the invention can be applied to a product requiring the high double-sided heat conduction capability, and meets the requirements of a multifunctional heating product in the market.

The invention discloses a method for detoxification of citrus by utilizing microwaves, and belongs to the technical field of microwave application. The method is characterized in that during microwave pretreatment, the microwave irradiation frequency is 1.0 GHz-3.0 GHz, the power is 100-900 W, the microwave irradiation time is 5-20 seconds, then pausing is carried out for 10-30 seconds, repetitive operation is carried out 3-10 times, the temperature of each part of the citrus is increased to 40-45 DEG C, and the constant temperature is maintained for 30-60 seconds; then it is adjusted that the microwave irradiation frequency is 350 MHz-950 MHz, the power is 1,000-3,000 W, the microwave irradiation time is 3-10 seconds, then pausing is carried out for 20-60 seconds, repetitive operation is carried out 5-20 times, the temperature of each part of the citrus is increased to 50-55 DEG C, the constant temperature is maintained for 1-5 minutes, and citrus detoxification is carried out by utilizing the microwaves. The method for detoxification of the citrus by utilizing the microwaves can make each part of the citrus reach the fatal temperature of candidatus liberibacter more quickly and evenly, and a tree body is not affected; under the non-thermal effect of a microwave electromagnetic field, nucleic acid, protein and other molecules in the candidatus liberibacter are easy to denature and inactivate to achieve double sterilization effects; the detoxificated citrus through the microwaves are detected by adopting GB / T 28062-2011 <Real-Time Fluorescence PCR Detection Method of Candidatus Liberibacter>, and the negative conversion ratio of the candidatus liberibacter is greater than or equal to 82%. The method is an efficient, quick and environment-friendly citrus detoxification method.

Disclosed is a non-oxidation heating method used for a thin steel plate as well as a special heating furnace, and the heating method is a method directly blowing high temperature inert gases to the thin steel plate for heating the thin steel plate. The special heating furnace comprises a furnace wall (1), a hearth (8), a furnace door (7), a belly pipe (4) for blowing the high temperature inert gases into the hearth (8), a pad iron (5) for placing the thin steel plate (6), and a flue (11); the flue (11) is disposed on the furnace wall (1) at the top part, and the flue (11) is communicated withthe hearth (8); and the pad iron (5) is arranged in the hearth (8). The method which directly blows the high temperature inert gases to the thin steel plate for heating the thin steel plate can ensure the uniform heating to the thin steel plate under the condition of non oxidation.