Engineering  :: Heat Transfer
            
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                If the pipe radius (r) is greater than the critical radius (rc) the heat loss from pipe								
				
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                | [A].   | 
                 remains constant for any addition of insulation | [B].   | 
                 
				 increases for any addition of insulation				 
				 
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				 | [C].   | 
                 decreases for any addition of insulation | [D].   | 
                 increases with addition of insulation until r = rc and then decreases with further addition of insulation |  
				 
				 				 
				  
                    
                    
                    
                    
                    
                    
                    
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