Air at 508C, 1 atm and a volumetric flow rate of 60 m3 / min enters an insulated control volume operating at steady state and mixes with helium entering as a separate stream at 1208C, 1 atm and a volumetric flow rate of 25 m3 /min. A single mixed stream exits at 1 atm. Ignoring kinetic and potential energy effects, determine for the control volume

Ahouse has the following electrical appliance usage (1) single 40w lamp used for 4 hours per day (2) single 60w fan used for 12 hours per day (3) single 200w refrigerator that runs 24 hours per day with compressor run 12 hours and off 12 hours find the solar power inverter size in watt with correction factor of 1.25.

In the winter, in order to keep the classroom steadily at 68 f before 10 pm, heating with an average rate of 42,000 btu/hr is provided. assume the outdoor temperature maintains at 32°f, determine the electrical power (kw) required to (a) operate a reversible heat pump (b) operate a real heat pump with a cop (7) of 4.5 and (c) operate an electrical-resistance heater.

List and describe the parts of boxford cnc milling machine with pictures?