Build a program capable of computing the so-called Merkel's integral: LKaV=T2T1hwhadT commonly used for sizing cooling towers. how is the enthalpy of saturated air at the water temperature and ha is the enthalpy of the incoming air. Take a look at the sketch below for the sake of reference. For this program to work, the user should supply the temperatures and enthalpies at the points A, B, C and D. This should work for the air-water system at 1atm. Make use of SI units. The integral should be computed by a numerical method. Numerical approximations shall not be accepted