4. Hydrogen, initially at 300K and 100 kPa with a volume of 10 m3, undergoes a polytropic process (PVn= constant) where n = 1.3. If the final temperature is 400K and the hydrogen behaves as an ideal gas, how much work is performed? Answer: -1111 kJ

A CNC milling machine has a purchase price of £120,000 and it is considered from an accounting standpoint to be depreciated to zero value over a period of 5 years. If the machine is to be used for 2 shifts with each shift working for 37 hours/ week and 45 weeks/ year. What is the machine cost/ hr which must be charged in order to amortise/repay the costs over the 5 year period? To make the calculation simpler, you can assume that over the 5 year period you will be required to pay back 8% interest on the sum borrowed. Express your answer in § / hour rounded up to the nearest penny

2. Assemble and describe the operation of a simple piping system (with only one branch, or at most two branches) for the industrial process of alcohol and sugar. Use the following equipment: Pumps, valves, heat exchangers, pressure gauges, flow meters, elbows and flanges For this system, what would be the most appropriate pressures and flows?

Answer all parts otherwise skip...     Need typed solution plz......