NUC350_M2

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An overheating vehicle is being discussed. Technician A states that coolant in a normal flow cooling system flows from the radiator to the heater core to warm up the passenger compartment quickly. Technician B states that in a reverse flow cooling system, coolant flows to the cylinder heads first, which keeps engine components at a more uniform temperature. Who is correct? Select one: a. Technician A only b. Technician B only c. Both Technicians A andB d. Neither Technician A nor B

-Experiment- Air conditioning (Study of Air Conditioning Unit: Evaluation of heating and steam injection performance) 1.Compare the effect of steam injection on humidification process with that of hot water spraying? 2. Why does the process of steam injection used in applications which need to maintain air with high humidity? 3. What is the reason of having preheater before steam injector?

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Write the name of each of the following systems and its plant type (use A, B, C, D ). Condensate Induced draught fan extraction pump Hot air Air Condenser pre- heater Flue gases Econo- miser ting ump Flue gases Super heater Cooling Boiler V tower Flue gases A Diesel Engine Steam Coolant oil ing Filter Oil dwnd ILube + Voil E Water Lubricating oil jum Lubricating oil tank Oil cooler Coolant circulating pump Auxiliary oil pump Filter C

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(b) Bathroom sinks and some other fixtures include an overflow opening in the basin. This opening is located on the wall and near the top of the basin. The overflow opening serves two important functions: If the water tap is left on while the drain stopper is closed, the opening will channel water down into the drain opening rather than letting is spill out of the sink onto the floor. The overflow allows the sink to drain faster by introducing air into the system. A sink with a dimension given in Figure Q2(b), has water flows into it at a rate of 8 L/min. If the drain stopper is closed and water level in the sink remains constant, determine the average velocity of water flows through the 3.0 cm diameter overflow hole. Front 3 cm diameter overflow holes Q-8 L/min 15 3/4| 40 cm 15 cm Side (a) Figure Q2: (a) Picture of the sink; (b) Sink dimension (Ь)

An oil/gas separator is a pressure vessel used for separating a well stream into gaseous and liquid components. They are installed either in an onshore processing station or on an offshore platform. Based on the vessel configurations, the oil/gas separators can be divided into horizontal, vertical, or spherical separators. In a vertical tank, the heavy liquids are pumped out of the ____________ of the vessel and the light phase is drawn off the side of the tank. a. Inlet b. corner c. Bottom d. Top

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Briefly state the desirable properties of a refrigerant?

Required information Problem 07.025 - DEPENDENT MULTI-PART PROBLEM - ASSIGN ALL PARTS NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Refrigerant-134a enters the coils of the evaporator of a refrigeration system as a saturated liquid-vapor mixture at a pressure of 140 kPa. The refrigerant absorbs 200 kJ of heat from the cooled space, which is maintained at -10°C, and leaves as saturated vapor at the same pressure. Problem 07.025.c - Total entropy change of the process Determine the total entropy change for this process. The total entropy change for this process is kJ/K.

General types of  Expansion device and Condenser used in a refrigeration system ?

Which is the most accurate description of one of the system's processes? A Fluid moves from the secondary pipes into the ground. B Fluid moves from the primary pipe into the building. Fluids circulate separately inside both pipes. D Fluid moves from the secondary pipe through the heat exchanger to the primary pipe.

Which one is not true about the expansion tank in cooling water systems on marine diesel engines? ((It is a multiple choice marine diesel engine question, please specify the correct option.))

Recirculated air from the indoor space is 7,500 cfm (75 degrees F dry bulb, 50% RH). Ventilation air from outdoors is 2,500 cfm (95 degrees F dry bulb, 76 degrees F wet bulb). Leaving air off the cooling coil is 10,000 cfm (55 degrees F dry bulb, 90% RH). What is the wet bulb temperature of the indoor air that is being recirculated? Group of answer choices 61.5 degrees 63.5 degrees 62.5 degrees 61 degrees

Where would a technician encounter freezing temperatureswhen working with liquid refrigerant?

### Develop the objective for a project report of a cell for the energy reuse of superheated steam within a thermoelectric power plant. The main focus is to determine the pressure drop within the system of this cell and the hydraulic compression pump contained within it. The cell contains, in all, the following equipment: Upstream: Two (tap) switching valves Two eccentric gearboxes Two pressure gauges Downstream: Two pressure gauges Two concentric magnifications A check valve (ball) A (tap) shut-off valve An expansion joint

جية - A - Northern Technical University Technical Eng. College/Kirkuk Fuel and Energy Eng. Tech. Dep. 4th Year Students Final Examination (2022-2023) Subj.: Process of unit operation Date: 6/6/2023 Time: 3 Hours: Morning & Evening Study Note/Answer only four questions, including the first question Q.1: Water is to be cooled in a packed tower from 330 to 295 K by means of air flowing counter currently. The liquid flows at the rate of 275 cm³/m² s and the air at 0.7 m³/m² s. The entering air has a temperature of 295 K and a humidity of 20%. Calculate the required height of tower and the condition of the air leaving at the top. The whole of the resistance to heat and mass transfer can be considered as being within the gas phase and the product of the mass transfer coefficient and the transfer surface per unit volume of column (ha) may be taken as 0.2 s¹. Assuming, the latent heat of water at 273 K = 2495 kJ/kg, specific heat capacity of dry air = 1.003 kJ/kg K, specific heat capacity of…

Module 4 Heating Effect of Electric CurrentHow long will it take to raise the temperature of 880 gm of water from 16ºC to boiling point ? The heater takes 2 amperes at 220 V and its efficiency is 90%.a.11.26 minc.13.08 min b.12.56 mind.14.05 min   ____ 13. An electric kettle is required to raise the temperature of 2 kg of water from 20ºC to 100ºC in 15 minutes. Calculate the resistance of the heating element if the kettle is to be used on a 240 volts supply. Assume the efficiency of the kettle to be 80%.a.72 ohmsc.83 ohms b.62 ohmsd.93 ohms

I need help on answering these from the following question below: 1. you need to calculate the mass flow rate of air inducted to the engine 2. from your answer, in the question above, you need to determine the ratios of heat release in the flue gas and cooling water against input power for the engine 3. you need to discuss how emissions can be minimised with regards to the engine The question: A diesel engine is a type of internal combustion engine that uses compression ignitio to turn energy in diesel fuel to rotary mechanical energy. A four-stroke (i = 0.5 for fourstroke engine, stroke = 150 mm and revolution = 2100 min−1) diesel engine with 6 cylinders and an effective specific fuel consumption of 0.23 kg kW−1h−1 has an effective and indicated mean pressure of 9.2 bar and 6.8 bar, respectively, and a compression ratio of 17. The ambient temperature and pressure of the diesel engine is 30 ℃ and 1.017 bar, respectively, and the temperature of the exhaust gas is 650 ℃. The clearance…

1. A temperature drop in the coolant entering the primary loop can be dangerous because,(a) Reactivity can increase as a result.(b) Pressure in the primary loop will decrease and water can flash to steam.(c) All of the above.(d) None of the above

In membrane processes the _____ ____ mode of operation has the feed water flowing tangentially to the membrane, and the resulting shear force of the fluid velocity helps minimize accumulation of particulate matter on the surface of the membrane.  Enter two words, lower case, separated by one space.

QUESTION 1.What is the difference between the Water Tube Boiler and Fire Tube Boiler ? 2. Enumerate the function of a. Boiler Water Treatment Tank b. Cooling Tower 3. What is a Water Hammer ? O |I

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