Q.1 An air conditioning system supplying air to a space with a sensible heat load of 14 kW and a latent heat load of 9 kW has a cooling coil and a bypass path as shown schematically in Fig. The db- temperature of the space is maintained at 26°C. The dry air mass flow rate of supply air is 1.2kg/s. Outdoor ventilation air at 34°C db-temperature and 50% relative humidity is introduced into the system with a dry air mass flow rate of 0.26 kg/s. The air leaving the cooling coil is fully saturated at a db-temperature of 6°C. The pressure is constant at 101.3 kPa. Determine (i) (ii) (iii) (iv) db-temperature and relative humidity of the supply air to the space, wb-temperature of the space, temperature of the air entering the cooling coil, and refrigeration capacity of the cooling coil.

71.7 is being marked wrong in McGraw Hill homework. I thought I had done it right with putting 86.03 but that is wrong also. I'm not trying to just find the answer, trying to find how to do this. Could there be a different number than 71.7? Where does the μk=0.20 come into the equation?

Please give a steps by steps explanation of each question answer please. Thanks you so much

When interpolating which of the following will give you the best possible results? Select two points that are the closest to the unknown. Use interpolation only when the values follow a linear curve. Do not use interpolation for values that follow an exponential curve. Do not use interpolation for an unknown outside of known values. Do not use on values that are slowly varying.