Acooling coil with a cross sectional area of 20 ft is employed to cool from 95 f dh75 f wb to s8.0 f dry-bulb temperature with chilled water entering the coil at 42 f. face velocity should not exceed 500 fpm. assume water velocity to be 6 f's and water temperature rise wtr st. determine (o) the volume flow rate (b) the number of rows (c) the number of fins per foot (d) the rate of heat transfer in the coil in tons and (e) the rate of latent heat transfer in the coil in tons

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

Fluids at rest possess no flow energy. a)- true b)- false

Afull journal bearing has a journal diameter of 27 mm, with a unilateral tolerance of -0.028 mm. the bushing bore has a diameter of 27.028 mm and a unilateral tolerance of 0.04 mm. the l/d ratio is 0.5. the load is 1.3 kn and the journal runs at 1200 rev/min. if the average viscosity is 50 mpa-s, find the minimum film thickness, the power loss, and the side flow for the minimum clearance assembly.