Open Access
Table 7
Waste heat utilization technologies.
| Item | Heat pump | High back-pressure heating | Light shaft heating | New condensing extraction B-P heating |
|---|---|---|---|---|
| Main Retrofit Content | Circulating water system, extraction system | Steam turbine body, condenser, circulating water system | Steam turbine body | Intermediate and low-pressure cylinder connection pipe, steam turbine body retrofit |
| Technical Features | Flexible regulation, requires new factory construction | Need to replace low-pressure cylinder rotor during heating season, open cylinder twice a year | Need to replace low-pressure cylinder rotor during heating season, open cylinder twice a year | Flexible regulation, small scope of changes, in the promotion stage |
| Current Application Status | Mature technology, many cases | Mature technology, many cases | Generally mature, used in small units | Initial stage, only a few power plants have successfully operated for one heating season |
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