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Q: Q1 (a) Differentiate between open feedwater heaters and closed feedwater heaters.
A:
Q: efficiency of the heat engine?
A: Given; A solar energy based heat engine which recieves; Q1=60 KJHeat at, T1=900C=90+273or, T1=363…
Q: Water cooled condenser is used for large capacity plant. O True False
A: Water cooled condensers are basically Heat exchangers which are used to remove heat from working…
Q: Quality means _______ when referring to a refrigerant.
A: Given Data : Quality Refrigerant
Q: with heat source (9 AX .AY) eneryy balancee
A: When constructing a heat exchanger, an energy balance calculation is frequently used to calculate…
Q: 1. GIVE THE DIFFERENCE BETWEEN THIS TWO REFGN. SYS. A. ABSORPTION REFGN. SYS. B. AIR - CYCLE REFGN.…
A:
Q: principle of Inverter air conditioner and energy saving.
A: An inverter air conditioner consists of a compressor such that the speed of the compressor can be…
Q: Steam or water substance is used in a Carnot refrigeration cycle. The evaporator tempera 300 K and…
A:
Q: In a solar cooling vapor compression refrigerator system, which component absorbs the heat from the…
A: In a solar cooling vapor compression refrigerator system evaporator absorbs the heat from the cold…
Q: refrigerator B00 K. Its
A:
Q: pom has a 250 W re c resistance heater. iCe it is observed t
A:
Q: It is feasible to reuse the heat from the condenser and use it for domestic heating. a) Yes b) No…
A: Yes it is possible to extract heat from the condenser and use it for domestic heating of water at…
Q: 17. One ton of refrigeration effect is equal to how many Btu/hr.?
A: 1 Ton of refrigeration is the heat removal unit.
Q: Which statement is right regarding the following heat pump? Outside air Inside air Condenser…
A: Option (a) it heats the indoor space by using heat rejection process.
Q: air conditioner an open or closed system?
A: Question: Is air conditioner an open or closed system
Q: izer (C) Feed pump (d) S
A: given: 6.23 Which amount the following is the boiler mounting? (a) Blow off cock (b) Economizer (C)…
Q: b) How to Investigate the variation of air flow rate with compressor ratio (With Intercooler)?
A: Air compressors are the device which is used to increase the pressure of air by applying for dynamic…
Q: Most of the heat in waste heat boiler is absorbed by steam at Select one O a economizer Ob.…
A: Option d is correct
Q: What is heat recovery steam generator (HRSG)?
A: A heat recovery steam generator is a type of heat exchanger which reuse the heat of the steam…
Q: safety measure
A: Hello you are asking about cardioxide refrigerant but currently there is no such a refrigerant in…
Q: What are different types Evaporator and Compressor used in refrigeration system for cooling ?
A: General types of evaporator used in a refrigeration system are; Dry expansion evaporators Flooded…
Q: Most reciprocating compressor have crankcase heaters?
A: The compressor is a mechanical device used to compress the fluid from low pressure to high pressure.…
Q: Given: Qref Tu = Te Refrigerant Requited: = I TOR 30°C - 200с 1 а " R 1349 сор
A:
Q: *with heat Source energy balance
A: When constructing a heat exchanger, an energy balance calculation is frequently used to calculate…
Q: In a heat pump, 15% of the heat is from the heat generated running thecompressor. The rest is from…
A: Let L and P are two numbers.Let P is of the whole number L then the percentage will be %=PL×100
Q: Air conditioners are rated by their coefficient of performance at 74?F inside temperature and 92?F…
A: Given that Air conditioners are rated by their coefficient of performance at 74?F inside…
Q: The COP of a Carnot heat pump
A: Given; The COP of carnot HP operating b/w ⇒ 60C and 370C
Q: How can we calculate the hopper heater power for an ESP?
A: Hopper heater power can be similarly estimated: HH = 2 ( HN ) θ ′ (1) where, HH =…
Q: Modern (latest) innovation in domestic refrigerators and air conditioners.
A: given; Modern (latest) innovation in domestic refrigerators and air conditioners.
Q: The device that receives heat energy from source and that rejects heat into sink is known as a. Heat…
A: The device that receives heat energy from source and that rejects heat into sink is known as a. Heat…
Q: Describe the efficiency of a water heater?
A: Given Water heater To find The efficiency of water heater
Q: Describe how a solar chimney power plant operate
A:
Q: he type of heat engine which can be used in solar dish-engine system is O a. Petrol engine
A: Option (b) is correct. Stirling engine
Q: Air conditioner using R-22 works on the condensing and evaporating temperatures of 50 F and -30 F…
A: Given:Evaporating temperature, Te=-30 FCondensing temperature, Tc=50 FCoP=2.855
Q: |Qout| > |Wcycle| in (mark all that apply): a) Refrigeration cycle b) Power cycle c) Heat pump cycle
A: |Qout| > |Wcycle| in (mark all that apply): a) Refrigeration cycle b) Power cycle c) Heat pump…
Q: Superheating process .8 should not exist in the cycle to keep it working efficiently. is necessary…
A: To choose: The correct answer. Explanation: Superheating process: The refrigerating effect in the…
Q: which are the following statement is true?* COP of Carnot refrigeration cycle does not depend on the…
A: Option 1:COP of Carnot refrigeration cycle does not depend on the working fluid . The statement in…
Q: Choose correct answer: Usually condenser pressure in refrigeration system is ____________ a. None…
A: A condenser is a component of the refrigeration system in which heat is extracted from the system…
Q: ate be used in a heating system?
A: NOT is a logic gate that negates the input and supplies that as output
Q: f heat
A: given: What is cop of heat pump?
Q: Most of the heat in waste heat boiler is absorbed by steam a Select one O a economizer Ob.…
A: Given: Waste heat boiler: It works in the principle of economizers.
Q: heat engine operates
A: Answer= 40%
Q: Most of the heat in waste heat boiler is absorbed by steam at Select one O a economizer
A: Given:Waste heat boiler
Q: Draw a neat diagram and explain the working principle of a two-stage reciprocating air compressor?
A: Two stage air compressors: With two-stage air compressors, the air is compressed in two stages; in…
Q: Work is done on a system in (mark all): a) Refrigeration cycle b) Power cycle c) Heat pump cycle
A: Option a and c are correct.
Q: (COP) of the heat pump is
A: Given data; Temperatures T1>T3>T2Heat pump receives the entire work output (W) of the heat…
Q: Draw T-S diagram Cooling (ram) air -Water Sprayer Primary Heat Exchanger Secondary Water Ozone…
A: In the 3-wheel cycle, the turbine work drives both compressor and exhaust fan. The 4-wheel…
Q: (a) Differentiate between open feedwater heaters and closed feedwater heaters.
A: The difference between open feedwater heaters and closed feedwater.
Q: Heat pump is the only example of a reversed heat engine. Select one: O True O False
A: ANSWER :- The statement "Heat engine is only example of reversed heat engine" is false.
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- Welded ______sealed compressors are normally used in household refrigerators.The by-pass factor of single cooling coil in an air-conditioner is 0.7. The by-pass factor, if thres such cooling colls with the same apparatus dew point are kept one behind the other, will be15m3/sofmoistairat45Cdb,31Cwbandpassesthroughairwasher. If the saturation efficiency is 90%. Determine the air state at the outlet of the air washer.
- Consider a gas turbine of 200 kJ/kg net work, operating under standard cold air assumptions. Determine the thermal efficiency, in %, of the turbine, if it has a regenerator with 90% efficiency.A R-12 compressor operates betwwen eveoperating temperature of 4 c ( hg = 353 kj/kg ), vg = 0.04895) and condensing temperature of 43 c ( hf = 241.6 kj/kg ).determine the bore diameter of the 4 cylinder 1000 rpm compressor if the piston speed is 200 meter/min and actual volumeter efficiency is 82% and refrigeration load is 25 tonsEngineer CoolAir is working on designing an air conditioning unit that handles the combined air flow from two food processing rooms with the following quantities: 4000 ft^3/ min at 80° F wet bulb and 50% saturated; 3000 ft^3/min at 70° F dry bulb and 65°F wet bulb temperatures. (a) What is the total mass flow rate? (b) What is the dry bulb temperature? (c) what is the wet bulb temperature?
- For R-410A refrigerant, which operates at a flow rate of 0.102 kg/s. It is known that saturated vapor enters the compressor at -40ºC and that saturated liquid leaves the condenser at 0ºC. The refrigerant operates in the saturation region. Determine: a) The compression power. b)The cooling power. c) The coefficient of performance.A two stage cascade refrigeration system uses R-12 in the high pressure loop with a condenser temperature of 300C and -100C in the cascade condenser, and R-22 in the low pressure loop with a temperature in the cascade condenser of 00C and an evaporator temperature of -30 0C. The refrigeration load is 28 tons. Given : h6 = 366 kJ/kg; h2= 421 kJ/kg Determine: 1) the mass flow rate in the low pressure loop in kg/s 2) mass flow rate in the high pressure loop, in kg/s 3) total power requirement in KW 4.) COP 5.) heat rejected in the condenser, KW 6.) amount of cooling water needed for a temp rise of 140C. in kg/s 7.) amount of ice (kg)for a 10 hrs operation if the initial temp of water is 31 0C to ice at -80C. Answe in kg.An ammonia vapor refrigeration cycle operates at an evaporator temperature of -16°C and a condensing temperature of 32°C. Determine the coefficient of performance for wet compression with superheated vapor leaving the compressor. The quality of vapor entering the compressor is 0.975 and the specific entropy of the superheated vapor discharging from the compressor is 5.7 kJ/kg-K.
- The approach and efficiency of cooling tower are 10 oC and 65 %, respectively. If the temperature of water leaving the tower is 27 oC, determine the temperature of water entering the tower.The maximum flow rate of standard shower heads is about 3.5 gpm (13.3 L/min) and can be reduced to 2.75 gpm (10.5 L/min) by switching to low-flow shower heads that are equipped with flow controllers. Consider a family of four, with each person taking a 5-min shower every morning. City water at 15°C is heated to 55°C in an electric water heater and tempered to 42°C by cold water at the T-elbow of the shower before being routed to the shower heads. Assuming a constant specific heat of 4.18 kJ/kg·°C for water, determine the amount of electricity that will be saved per year, in kWh, by replacing the standard shower heads with the low-flow ones.The maximum flow rate of standard shower heads is about 3.5 gpm (13.3 L/min) and can be reduced to 2.75 gpm (10.5 L/min) by switching to low-flow shower heads that are equipped with flow controllers. Consider a family of four, with each person taking a 5-min shower every morning. City water at 15°C is heated to 55°C in an electric water heater and tempered to 42°C by cold water at the T-elbow of the shower before being routed to the shower heads. Assuming a constant specific heat of 4.18 kJ/kg·°C for water, determine the ratio of the flow rates of the hot and cold water as they enter the T-elbow.