Heat Balance—to Find Needed Fuel Inputs

Heat Balance— To Find Needed Fuel Inputs 

The heat needs for a continuous furnace after heat-up are heat to the loads heat losses to the walls, hearth, and roof and heat losses to cooling water and openings. (See all in a Sankey diagram, sec. 5.11.) 

Ways to minimize losses are discussed in chapter 5. The following text and worksheet (table 8.1) explain the methods for evaluating heat to the load and heat losses for the furnace of sample problem 8.1. Furnace dimensions and other furnace data are not presented at the beginning of this sample problem 8.1, but rather looked up or presented at the point of need during the progress of the following solution. 

Refractory Heat Loss Sample Problem 8.1—Required Fuel Inputs. An added aspect of sample problem 8.1 (the same continuous walking beam steel reheat furnace) calculate the required gross heat input to each zone. (See worksheet tables 8.14 to 8.17.). 

Heat balance worksheet guide. Numbers in this type parentheses refer to line numbers of tables 8.14 to 8.17.  

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