Subdual of stationary thresher machine for chopping resudies

 

-Estimation the costs of using the machine: 

        Cost of operation is calculated according to equation given by 

Awady (1978), which has the following form: 

                       C= P/H( 1/y + i/2 + t + m ) + ( A. k. f. u) + S/144                                   

Where:  

C = Total hourly cost,  P  =  Price  of machine LE (5000), H = Estimated 

yearly-operating hours (500),  y = Estimated life-expectancy of machines 

in years(10), i = Interest rate (12%), t = Taxes and overhead rates (3%), 

m = Maintenance and repairs ratio(10%),  A = Ratio of rated power and 

lubrication related to fuel cost (1.2), K = Power in kW or hp (65 hp), f = 

Specific fuel-consumption in L/kW.h or /hp.h (35%), u = Price of fuel 

per LE (0.6), S = Monthly salaries (600 LE), and 144  = Estimated 

working hours per month according to price level 2005. 

*Notice that all units have to be consistent to result in C = L.E./h.