INDUSTRIAL ENERGY RECOVERY
Waste Heat Recovery with Welded Block Exchangers
Match an available heat source to a useful heat sink before sizing the exchanger. Recovered duty depends on both streams and their operating schedules.
- Identify the source and sink
- Provide flow rates, compositions and inlet temperatures for the hot source and cold receiving stream. Define useful outlet targets and the hours when both streams are available. Include bypass operation and seasonal or production-related variation.
- Set the thermal and hydraulic limits
- Assess the temperature approach together with available pressure drop and the properties of both media. Confirm whether either stream changes phase. The review must distinguish recoverable heat from heat that the process can actually use.
- Check integration and maintenance
- Review piping distance, control requirements, installation space, fouling behaviour and access for cleaning. Specify fluid compatibility and design conditions. A compact exchanger does not eliminate integration work or operating constraints.
- Verify the business case
- Record the baseline heating and cooling duties and define measurement points. Calculate annual recovered energy from the assessed duty and credible operating hours. Quantified energy, cost or emissions savings require a documented baseline and operating assumptions.
- Agree commissioning criteria
- Confirm target outlet temperatures, recovered duty and allowable pressure drop for agreed operating cases. Define how flow and temperature measurements will be used to verify performance after installation.
Send Your Process Data for Heat Exchanger Selection
Provide both fluids, flow rates, inlet and outlet temperatures, operating and design pressures, allowable pressure drop and material requirements. For a replacement, include the nameplate and arrangement drawing.