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As shown in the schematic diagram, when the high-voltage power is connected to the A-phase heating pipe group, the B-phase heating pipe group, and the C-phase heating pipe group, the cold air enters from the air inlet under the action of the fan. After the cold air passes through the A-phase heating pipe group, the B-phase heating pipe group, and the C-direction heating pipe group, the cold air enters from the air inlet under the action of the fan. When the cold air passes through the A-phase heating pipe group, the B-phase heating pipe group, and the C-phase heating pipe group, the cold air is heated to the set temperature, The heated hot air is output from the air outlet to complete the air heating process.
The third generation: low resistance, efficiency of 80~92%, area increase of 3.5~5 times. The waste heat recovery device is a heat exchanger that exchanges energy between air and air through specially processed heat conductive metal plates. It can completely separate fresh air and exhaust air, avoiding any solvent transfer. Two streams of air cross and countercurrent into the heat exchanger, and the energy of fresh air and exhaust air is exchanged through metal plates to transfer heat from the warmer side to the cooler side, thereby achieving the recovery of energy in the exhaust air.