Aspace is maintained at 75°f db and 50% rh. the return air has a sensible heat load of 100,000 btu/hr and a latent heat load of 40,000 btu/hr. the total outdoor air load is 80,000 btu/hr. the air supplied to the space is 55°f db and 90% rh. neglect the fan heat and heat gain from the duct system. with a temperature rise of chilled water across the cooling coil of 12°f, the rate of water flow (gpm) is most nearly: a. 15 b. 20 c c. 29 d. 35

Ahot wire operates at a temperature of 200°c while the air temperature is 20°c. the hot wire element is a tungsten wire of 5 um diameter and 2 mm in length. plot using excel current, heat transfer and heat generated by the wire for air velocity varying from 1-10 m/s in steps of lm/s? matlab the sensor voltage output, resistance, or assume nu 0.989 re033pr13 take air properties at tr (200°c20°c)/2 = 110°c properties of tungsten: c 0.13 kj/kg.k 3 p 19250 kg/m k (thermal conductivity) = 174 w/m.k