Energy balance calculations are essential for designing and analyzing heat výměník networks. They help ensure accement heat transfer and energiy conservation with in industrial processes. This article provides a step-by- step guide to perfoming these calculations effectively.

Understanding Heat Exchanger Networks

A heat tracheer network consiss of multiple heat travers interconnected to transfer head between hot and cold effects. Proper analysis impleves tracking energiy flows to optimize performance and minimize energiy consumption.

Kroky pro výpočet Energy Balance

Te process begins with identifying all hot and cold rails, including their temperature, flow rates, and heat capacities. Te folking steps outline thee calculation process:

  • Determine the inlet and outlet temperature of each stream.
  • Calculate the heat duty for each stream using the formula: cribu1; cribu1; FLT: 0 cribu3; cribu3; Q = m * Cp * ΔT cribu1; cribu1; cribu1; cribu1; cribu3; cribu3;
  • Aplikujte to na princip o f conservation of energiy to ensure that heat logt by hot raips equals heat gained by cold raids.
  • Adjust flow rates or temperatures to optimize heat recovery and minimize external energiy input.

Example Calculation

Suppose a hot stream enters a heat changer at 150 ° C with a flow rate of 2 kg / s and a specic heat capacity of 2.1 kJ / kg · K. It exits at 100 ° C. A cold stream enters at 30 ° C and exits at 80 ° C. To verify energiy balance:

Calculate hot stream heat duty: Q _ hot = 2 * 2.1 * (150 - 100) = 2 * 2.1 * 50 = 210 kJ / s.

Calculate cold stream heat gain: Q _ cold = 2 * 2.1 * (80 - 30) = 2 * 2.1 * 50 = 210 kJ / s.

Te heat duties are equal, confirming energiy balance.