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Direct income is one whih is earned directly by way of bussiness Activites. ii.
A direct expansion air conditioning (DX) system uses a refrigerant vapour expansion/compression (RVEC) cycle to directly cool the supply air to an occupied space. ... The evaporator (located inside the supply air ductwork) absorbs heat through the process of expanding the refrigerant flowing within it.
Indirect incomes is one which is earned by way of Non- Bussienss activeties
