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Design a simple heat exchange unit, with drawings to be provided. Specific requirements: 1. All equipment must be integrated within one skid, requiring minimal space； 2. Process: One electric heater in use and one as backup are installed in the water tank to heat tap water to 95–100°C; the heated water is then pumped into the plate heat exchanger, and after heat exchange it returns to the water tank, repeating this cycle ； The water tank is equipped with a thermometer for manual temperature monitoring and a level gauge for manual level monitoring; it is designed to be filled with water in an open manner ； The water tank is equipped with a simple temperature control system: the electric heater stops working when the temperature reaches 95°C, and it starts working again when the temperature drops below 80°C ； The water tank is equipped with a simple level control system of the external float type: when the water level drops to 70%, it triggers the supply of tap water, and when it reaches 90%, the water supply is stopped. 3. Selection and calculation: The operational requirement is to heat the oily wastewater from 20°C to around 45°C for later use; the processing capacity required is 8000 kg/h. A heat exchanger with a surface area of 5 m² will be used, along with a water tank of 800 L. The pump should have a pressure of 0.3 MPa and a flow rate of 500 L/h. Question: Can these specifications meet the requirements? Should the pipe size be DN50? 4. Requirement: The equipment must be safe and reliable ； The temperature control system is reliable, and no brand requirements are imposed on the components ； Drawings and selection of the control box. Contact number: 13594149899, Zhang