Heat Recovery Heat Exchanger For Generator Sets (e.g., Diesel Generators, Gas Generators)

Heat Recovery Heat Exchanger for Generator Sets (e.g., Diesel Generators, Gas Generators)

Design Focus: Efficient Heat Exchange and Stable Energy Supply

Generator sets typically operate continuously under stable loads for extended periods. The goal of waste heat recovery is to heat circulating water or drive waste heat boilers. The design must meet the following requirements:

High Heat Transfer Efficiency: Utilizes H-type finned tubes (30% higher heat transfer coefficient than standard finned tubes). Exhaust side flow channels designed with cross-flow configuration to prolong exhaust residence time.

High-Capacity Design: For units exceeding 1000kW, employs multi-module parallel heat exchangers (e.g., 3 x 200kW modules) for maintenance convenience (single-module failure does not affect overall operation).

Temperature Control: Equipped with thermostatic valves that automatically bypass when waste water temperature exceeds 95°C to prevent boiling.

Installation Specifications:

The heat exchanger is installed downstream of the generator exhaust duct. The foundation is cast concrete (flatness tolerance ≤2mm) to prevent vibration transmission.

Waste heat pipes are insulated (50mm thick rock wool insulation) to minimize heat loss (heat loss rate ≤5%).

The distance to waste heat utilization equipment (e.g., hot water tanks) is ≤10m to reduce pipe length and lower resistance.