Typical energy use in a non-ferrous and EAF steel foundry

Space heating and hot water supply A similar system to the one discussed above may be used to blow hot air into the foundry hall for space heating. Alternatively, a water-water heat-exchange is used to heat a water circuit for radiators or for hot water supply. 

Since the temperature of the cooling water in an unpressurised system is normally unlikely to exceed 60 - 70 °C, radiators will need extra large surface areas are necessary in order to transfer heat efficiently. Alternatively, the temperature of the water can be boosted by some other heat source, such as supplementary gas or oil burners or an electrical heater. Some alternative heating system may be necessary to take over when the furnaces are not operating for example, early in the morning, to raise the temperature of the work areas to a comfortable level. 

No cross-media effects have been reported. 

A heat recovery system using the cooling oil of induction furnaces was installed in a Belgian 

Before heat recovery can be applied, a number of criteria must be met  

---

Table 4.58 Typical energy use in a non-ferrous and EAF steel foundry [64, ETSU, 1997], [202, TWG, 2002]...

---