Hot Water Generation Using Hybrid Tubular Plate Heat Exchangers for Heat Condensation

摘要

A daily newspaper recently published an article on the modernization of a North-Bavarian combined heat and power plant. It was reported that a tube bundle heat exchanger installed to function as a heat condenser for turbine exhaust steam and district heating hot water weighs 26 t, is 10 m long, measures 1.6 m in diameter and consists of 1,804 pipes. It transmits a heat output capacity of 51MW through its heating surface of 800 m~2. For comparison (figure 1 and table 1): A fully welded Hybrid tubular plate heat exchanger from VAU Thermotech installed in a Dutch waste incineration plant and used for generating district heating hot water has a heat output capacity of 52 MW. Its heating surface is only 382 m~2 by a weight of just 7.8t. The question is: Why is a Hybrid tubular heat exchanger more efficient, requiring only 48% of the transfer area and 70% less material?