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Problem 1: A Carnot cycle operates in a closed system using steam: saturated liquid at 20 bar (state A) is heated isothermally until it becomes saturated vapor (state B), expanded by reversible adiabatic process to 10 bar (state C), partially condensed to state D, and finally compressed by reversible adiabatic process to initial state A. a) Obtain the properties (T, P, V, U, H, and S) at the four states, A, B, C, and D, and summarize the results in a table. b) Calculate the amount of heat and work involved in each of the four legs of the process. c) Calculate the net amount of work that is produced. d) Calculate the ratio of the network over the amount of heat absorbed at the high temperature of the cycle. How does this value compare to the theoretical efficiency of the Carnot cycle that is calculated based on the two operating temperatures?
A black body of finite dimension at 1000K is inserted into an infinite medium at 300 K. Given Stefan Boltzman constant as 1.8*10-5 W/m2K4, the radiative heat transfer coefficient is ------
Which of the following is insensitive to changes in pressure ?
6. Famous New Zealand scientist Ernest Rutherford was awarded a Nobel Prize in which field? 7. What is the chemical symbol for gold? 8. K is the chemical symbol for which element?
Prepare a report on pollution due to transport in Oman and its environmental impact.
The specification for a sieve plate column is given below. Make a preliminary mechanical design for the column. Your design should include:
Forty-five kilograms of a solution containing 30 wt% ethylene glycol in water is to be extracted with furfural. Using Figures 4.14a and 4.14c, calculate:
Two wires both carry the same current (I). The moving charged particles in both wires are electrons, but the concentration of moving electrons in wire #1 is double the concentration of moving electrons in wire #2.
Describe the main purpose of the Globally Harmonised System of Classification and Labelling of Chemicals - Outline the bridging principles for classification of mixtures
Elaborate on the hierarchy of control measures used in Industrial Hygiene How would you calculate the noise problem at the factory and what control measures would you consider before you recommend the supply of hearing protection to personnel ex..
Cunene is made by alkylation of benzene with propylene over zeolite catalyst. To maximize selectivity to desired products, several beds of catalyst are used inside the same reactor.
Monczka-Trent has two options: (1) its standard 2-day shipment or (2) a subcontractor who will team drive overnight with an effective delivery of 1 day. The extra driver costs $175. Handfields's holding cost is 35% annually for this kind of inventory..
The batch fermentation of glucose to glutamic acid using Brevibacterium divaricate is described in detail in US patent 2,978,384. In Example I in the patent a 10.5 wt% glucose feed was fermented for 72 hours at 30 °C
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