Q4: For each sentence below, put the word "True' for wrong sentence. 1. For indirect evaporative cooling, the two flui perforated wall of high thermal conductivity t between the two fluids. ( 2. The enthalpy of fusion for cold storage produ properties for each product. (
Q: In a psychrometric process, the sensible heat added is 30 kJ/s and the latent heat added is 20 kJ/s.…
A: Given: Sensible heat=30 kJ/s Latent head added= 20 kJ/s To find:- Sensible heat factor
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Q: Superheated water vapor is transported at 5.05 atm at a temperature of 250 oC, the output is…
A: Superheated water vapor or steam Steam having a temperature above boiling temperature corresponding…
Q: S healed al constant pressure from 1.7 m, 27 °C and 97 kPa to 417 °C. It is then cooled at constant…
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Q: (a) Derive an expression for the saturation vapour pressure of water in equilibrium with its vapour…
A: **According to the guidelines we can answer only one question at a time, please resubmit the…
Q: A cylinder-piston arrangement contains 50 g of Freon-12. Assume that the piston movement is…
A: Given: State 1. saturated vapour at Tsat =25oC State 2. 10 % liquid
Q: 1. Find the total heat in kJ required for ice at -15°C to become vapor at 120°C.
A: Given data: Ti=-15°CTF=120°C Need to determine the total heat required.
Q: This is for my thermodynamics review problems can you show the full solution... 7. Water vapor…
A: Given, P1 = 100 kPa T1 = 150 oC v1 = v2 (As vapor is in rigid vessel, hence volume remains…
Q: A 32.50 g sample of liquid tin at 522.00°C is poured into a mold and allowed to cool to 28.00°C. How…
A: Consider the diagram shown below for the change in the state of the sample. Given data:
Q: Classify whether the properties given is for subcooled liquid (SC), saturated liquid (SL), wet…
A: Solution: The given states have been categorized by looking into the steam tables:
Q: 16. Consider the figure below. An electric stove having a rating of 3kW is use to boil a 6Li of tap…
A: Answer: The total kW-hr used by the electric stove in the given condition is 6.72734 kW•hr.
Q: 6- Two springs with same spring constant are installed in a massless piston/cylinder with the…
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Q: three-step cyclic process. The gas is subj. uccessively to an isothermal expansion at 600 K to 3 bar…
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Q: The temperature at state A is 20ºC, that is 293 K, what is the temperature at state D, in Kevin?
A: Given:
Q: closed system is comprised of 10kg of pure water substance initially at a temperature of 400 C and a…
A: Solution is attached below
Q: Construct the flow.chart (diagram) and compute the total heat required to convert 250 g of ice…
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Q: In a container with a fixed volume of 2 m3, there is saturated liquid vapor mixed water at a…
A: Consider the T-v diagram shown below for the given process. The mass of the vapour is The mass of…
Q: 1. Boiler. Steam at 40 bar, 350°C, is generated in a boiler at the rate of 50,000 kg/h from feed…
A: Given dataFeed water temperature = 130 °CSteam mass flow rate = 50000 kg/h = 13.889 kg/sSteam…
Q: A Styrofoam bucket of negligible mass contains 1.75 kgof water and 0.450 kg of ice. More ice, from a…
A: Given, Initially mw = 1.75 kg mice = 0.45 kg mass of ice at equilibrium m = 0.884 kg
Q: A closed, rigid tonk contains o two-phose liquid-vopor mixture of Refrigerant-22 initially at -20°C…
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Q: A thermal machine operates with 1.00 mol of an ideal diatomic gas according to the cycle shown in…
A: Given data, No of moles of diatomic gas, n = 1 Volume at state 1, V1 = 25 L = 0.025 m3= V2 From…
Q: a) Calculate the pressure exerted by 5 kg of Carbon dioxide gas placed in a 2000-liter vessel at a…
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Q: Five kg of water vapour are contained at 150 kPa ad 90 per cent quality in a suitable enclosure.…
A: Given Data The mass of the water vapour is: m=5 kg The initial pressure of the water vapour is:…
Q: A closed system is comprised of 10kg of pure water substance initially at a temperature of 400 C and…
A: To find : The specific volume of the steam in state 1, the work done by the system on its…
Q: Under temperature of the mixture for a portion of a time interval after the at a constant rate by a…
A: Heat of fusion Heat of fusion measures the amount of energy required to melt a given mass of a solid…
Q: Twenty m/hr of air at 600 kPa, 330 Kenters a well-insulated, horizontal pipe having a diameter of…
A: GivenPressure at inlet P1=600kpaTemp at inletT1=330kPressure at exitP2=120kpad1=1.2cmTo find:-Exit…
Q: How much thermal energy is (J) required to boil 2.50 kg of water at 100˚C into steam at 139.0°C.?…
A: Given that, mass of water = m = 2.5 kg Temperature of water = Tw=100 °C Temperature of steam =…
Q: Problem 1 Starting with Gibbs equations, derive the temperature-volume ratio relationship and the…
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Q: Tap water is contaminated with E. coli!! To make sate drinking snow at -5.0°C using the stove that…
A: Givenm=9.8kgT1=-5oCQ=2290WCsmow=2090 J/kgoCCwater=4186 J/kgoCLf=3.4×105 J/kgLV=2.3×106 J/kg
Q: 's claim? ng point. N An ideal gas is confined to a cylindrical container with a movable piston on…
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Q: This question requires the use of the Thermodynamic Property Tables supplied as additional material.…
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Q: H,0 P = 800 kPa
A: Given Data:- Saturated Water = 0.1m3 At temperature, 800kPa Pressure will be = 0.9m3 Temperature…
Q: Revisit Example 6 from your Module 4 notes. Consider the well-insulated, rigid tank having a volume…
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Q: This question requires the use of the Thermodynamic Property Tables supplied as additional material.…
A: Solution is given below:
Q: This question requires the use of the extracts from the tables of thermodynamic properties supplied.…
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Q: Consider the steady-state counterflow heat exchanger shown below. There are separate streams of air…
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Q: HMK-2: Mixtures of Gases A mixture composed of three gases having the properties listed in table.…
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Q: Q1: 100kg of Sausage 'Frankfurter' is to be cooled from 25°C to Using the energy content (enthalpy),…
A: Given: m = 100 kg T1 = 25 deg C T2 = -5 deg C
Q: Outside air at 15°C and 20% relative humidity is admitted at a volumetric rate of 15m³/min into an…
A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts for…
Q: Steel balls (diameter = 21 mm, p = 7833 kg/m , k = 54 W/m•°C, Cp = 0.465 kJ/kg•°C, and a = 1.474x10…
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Q: Calculate the amount of heat required (in kJ) to raise the temperature of 23.4 g of ice at -11°C to…
A: given data m = 23.4 g = 0.0234 kg ΔHvap = 40.67 kJ/mol ΔHfus = 6.008 kJ/mol Cice = 2.092 J/g°C,…
Q: In a fixed volume tank, there is initially 0.8 kg of superheated water vapor at a temperature of…
A: Given data mass of superheated water vapor = 0.8 kg Initial conditions T1 = 300oC P1 = 1 MPa…
Q: A thermal power plat uses boiler which evaporates 3500 kg of water at 42.5° C into superheated steam…
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Q: A rigid closed tank contains refrigerant 134a wnich is initially. with a temperaf lure of D'c and a…
A: Time taken for the process to complete is 53.559 seconds.
Q: How much heat must be supplied to water at 180 degrees celcius to make 1 kg of wet steam at 9000…
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Q: A vapour compression refrigerator circulates 4.5 kg of NH, per hour, condensation take place at 30°C…
A: The T-s diagram for the complete process is given below as, we will proceed by calculating the…
Q: A 1-kg steam-water mixture at 1.0 MPa is contained in an inflexible tank. Heat is added until the…
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Q: A closed system is comprised of 10kg of pure water substance initially at a temperature of 400 C and…
A: Note: Due to the absence of the required value in the given table, the standard steam table is used.
Q: Explain in detail what affects human comfort?
A: TO explain: what affects human comfort
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- Q3: Explain in detail the differences between vapor compression systems and evaporative cooling systems. This comparison should present advantages, disadvantages, potential applications, and suitability of each system to the climate conditions of Iraq.f. A well-built, wood-framed, single-family detached residence in Manila, Philippines, has a 15 ft by 20 ft family room with 10 ft high ceilings. The target inside design temperature is 72°F. If the air exchange rate of 0.4, calculate the sensible cooling load attributed to infiltration.O Falge QUESTION 2 The refrigerant undergoes a change of phase during the heat-transfer process, the pressure of the retrigerant is the saturation pressure during the low supply and low rejection processes. True False QUESTION 3 Frequently, the vapor of the liquid leaving the condenser is lower than the saturation temperature. O True False QUESTION & The pressure of the iquid leaveng the condenser we be less than the pressure of the vapor entarng, wd etempernd the retigerant in the condenser. O Te QUESTION S Are many situations in which it is desirable to combine three cycles in series, either power systems or refigertion sytems, to take advantage of a very wide temperature range or to utilize what would otherwise be waste heat to improve etficiency O true O False QUESTION 6 A cycle can't be made very efficient, since the temperature differences between the two fluid streams can be controlled through careful design of the combined system. True
- 3.) An ammonia compressor operates at evaporator pressure of 316.02 kPa and a condenser pressure of 1557 kPa. A twin-cylinder compressor with bore to stroke ratio of 0.85 is to used at 1200 rpm. The actual volumetric efficiency is 92% and compression and mechanical efficiency is 78% and 80% respectively. For a cooling capacity of 25 TR, (a) the sketch the p-h diagram labeling the evaporating and condensing temperature and pressures (b) define the all properties of ammonia taken from saturation table. Determine (c) the quantity of cooling water in the condenser in kg/min if the increase in temperature is 8°C, (d) the bore and stroke expressed in cm and (e) the size of the driving motor in hp. Given: h2 = h at 1557 kPa and s2 = s1 1695 kJ/kgIDENTIFY THE FF: AIRCONDITIONING AND VENTILATION 1. Acts as a master controller which keeps the system inautomatic operation2. Adds heat to a fluid3. Ratio of the actual partial pressure of the watervapor in a space to the saturation pressure of purewater at the same temperature.4. Also known as the heat content of air-vapormixture5. Temperature as read on an ordinary temperature6. Temperature where in water will start to condense7. Equipment that removes heat8. Is the process of treating air9. Their purpose is to create atmospheric conditionsfavorable to human health, comfort and efficiency.10. The system is to maintain indoor conditions forwinter season4. GoBrownsite is an obscure element with a molar mass of 126.2 grams per mol. Below is the cooling curve for GoBrownsite. How much energy needs to be removed from a 250.0 g sample of GoBrownsite knowing the following. Heat of Condensation AH = -165 kJ/°C • Specific heat of liquid GoBrownsite = 197 kJ/g-°C Heat of Freezing AH = - 231 kJ/°C Cooling Curve 80 e) to (1) 60 40 20 -20 Temperature 40 -60 -80 -100 (1) to (s) -120 Time
- B// What are the methods of draught in cooling towers. Demonstrate them with drawings. What is the relationship between the cooling tower and condenser. Q4IIA// Prove for the condenser: %3D + Cow (Tw2-Tw1) when the temperature of cooling water outlet and inlet is equal to saturation temperature of steam and the condensate leaving the condenser respectively; also, the inlet of condenser is dry steam with unity latent heat. Twi 1Heat-Transfer Coefficient in Single-Effect Evaporator. A feed of 4535 kg/h of a 2.0 wt % salt solution at 311 K enters continuously a single-effect evaporator and is being concentrated to 3.0%. The evaporation is at atmospheric pressure and the area of the evaporator is 69.7 m². Saturated steam at 383.2 K is supplied for heating. Since the solution is dilute, it can be assumed to have the same boiling point as water. The heat capacity of the feed can be taken as cp = 4.10 kJ/kg · K. Calculate the amounts of vapor and liquid product and the overall heat-transfer coefficient U. 8.4-1.1.) Determine the refrigerant name and chemical formula of R-22 2.) An ice plant produces 20 tons of ice per day at -15oC from water at 25 oC. If miscellaneous losses are 12 % of the freezing and chilling load, calculate the refrigeration capacity of the plant, in TR.
- What are chilled liquid treatment process and condenser water treatment process in refrigeration and air conditioning?Q.1. A refrigeration process with interstage cooling uses refrigerant HFC-134a, and the outlet of the condenser is to be saturated liquid at 40°C. Refer to the following figure for stream numbers in your solution. The pressure of the flash chamber and the intermediate pressure between compressors is to be 290 kPa. The evaporator is to operate at -20°C and the outlet is to be saturated vapor. The flowrate of stream 1 is 23 kg/h. The flash chamber may be considered adiabatic. The compressors may be considered to be 80% efficient. a) What is the power input required to the first compressor? b) What are the flowrates of streams 6 and 7? What is the enthalpy of stream 4? Hot Side 6 5 Condenser 2nd Stage Compressor Throttle Valve 7 Flash Chamber Vapor Phase Only 1st Stage Compressor 8 Throttle Valve Evaporator 1 2 Cold Sideexplain the principle of operation of a cooling tower and neatly sketch section, analyse a crossflow cooling tower.