Dew point humidity sensor. show that the dew point temperature cannot be higher than the ambient temperature in two ways: a. theoretically. b. by using a dew point temperature of 30°c at an ambient temperature of 25°c.

Estimate the change in specific internal energy au and specific enthalpy h from inlet to outlet for ethylene glycol (a liquid) flowing through each of the following devices: (a) a heat exchanger where the glycol temperature increases from 20 °c to 80 °c; (b) a pump operating at about 25 °c and increasing the glycol pressure from 100 kpa to 8 mpa.