AW Example .11 The Haber Process, developed in the early 1900 s, is commonly used to produce ammonia for industrial and consumer applications. Higher yields take place as temperature and pressure (in atmospheres or atm) are varied. New pressure chamber equipment is necessary at KGC Industries in India. Three alternatives are available, the third being contracting all services. Use the annual worth method for a study period of 4 years and i=6% per year to select the lowest annual cost alternative. There are no positive salvage values expected, but the market values are expected to decrease by 20% of the first cost for each year of use