METHYL ALCOHOL (CH3OH) is burn with 25% excess air. How much un burn oxygen in kgmol oxygen/kgmol fuel will be in the products if the combustion is complete

A Gaseous fuel mixture has a molal analysis: h2=14% CH4=3% CO=27% O2=0.6% CO2=4.5% N2=50.9%

determine the air fuel ratio on a molar basis for the complete combustion of octane with theoretical amount of air

At typical industrial fuel oil, C 16 H 32 with 20% excess air by weight. Assuming complete oxidation of the fuel calculate the air fuel ratio by weight.

The fuel has the Following analysis C = 89% N2 = 2% H2=8% S=1%

The following goal has the following Ultimate analysis by weight: C=70.5% H2=4.5% O2=6.0% N2=1.0% S=3.0% Ash=11% A Stocker Fired boiler of 195,000 kg/hr Steaming capacity uses the coal as fuel. Calculate volume of air in metric cube per hour with air at 60°F and 14.7 air pressure is the boiler efficiency is 70% and factor of evaporation is 1.1

The following goal has the following Ultimate analysis by weight: C=70.5% H2=4.5% O2=6.0% N2=1.0% S=3.0% Ash=11% Moisture = 4% A Stocker Fired boiler of 175,000 kg/hr Steaming capacity uses the coal as fuel. Calculate volume of air in metric cube per hour with air at 60°F and 14.7 air pressure is the boiler efficiency is 70% and factor of evaporation is 1.1

The dry exhaust gas from oil engine has the following Gravimetric analysis : CO2 = 21.6% 02 = 4.2%, N = 74.2% specific heat at constant pressure for each component of the exhaust gas in kilocalories per kilogram degrees Celsius are: CO2 = 0.203 O2 = 0.219 N = 0.248 Calculate the specific gravity If the molecular weight of air is 28.97 kg per kilogram mole

creamery must school 20,000 L of milk received each day from an initial temperature of 29° degrees Celsius to a final temperature of 2° C in five hours. If refrigeration losses amount to 10% of the cooling load, what must be the capacity of the refrigerating machine? Note: Specific heat of milk is 3.9 kj/Kg-K And SG = 1.05

how many tons of refrigeration is required to produce 10 metric tons of ice per day at -10° C from raw water at 22° C. If miscellaneous losses are 15% of the chilling and freezing load?

In order to cool 1000 kg of water at 20° C in an insulated tank, a person pours 80 kg of ice at -5° C into the water. Determine the final equilibrium temperature in the tank. The melting temperature and the heat of fusion of ice atmospheric Pressure 0° C and 333.7 Kj/kg respectively

Fish Weighing 11,000 kg with the temperature of 20° C is brought accord storage and which shall be cool to -10° C 11 hours. Find the required plant refrigerating capacity in tons of refrigeration if The specific heat of fish is 0.7 K Cal/KG -C Above freezing point and 0.3 K cal/kg C Below freezing point. The freezing point is -3° C. The latent heat of freezing is 55.5 K/KG.

500 kg of pole three enter a chiller at 8° C and are frozen and chilled of final temperature of -18° C for storage in 15 hours. specific heat above and below freezing our 3.18 and 1.55 respectively. The latent heat is 246 KJ/KG and the preaching temperature is -5° C. Compute the product load

A refrigeration system is to bread loaves with an average mass of 450 G from 22° C to -10° C at the rate of 500 loaves per hour by refrigerated air. Taking The average specific and latent heats of bread to be 2.93 and 109.3, respectively determine the product load

85 CM diameters vertical ball surface is maintained at the temperature of 70° C is suspended in the middle of a room at 20° C. If the convection heat transfer coefficient is 15 W/M2 – degrees C And the emissivity of the surface is .8, determine the total hit transfer from the ball

An elastic sphere contain gas at 120 kpa Diameter of 1 m. Heating the spear causes it to expand a diameter of 1.3 m period during the process. The pressure is proportional to the diameter. Calculate the work done by the gas.

The journals of a shaft are 380 mm diameter, it runs at 105 RPM and the coefficient of friction Between journals and bearing is 0.02. if the average load on the bearings is 200 kN find the heat generated per minute at the bearings

saturated vapor ammonia at -16° C leaves the evaporator, blah blah blah blah blah determine the refrigerating capacity of the system

A 35% solution leaves the absorber and 30% solution enters the absorber. The heat removed from the absorber by cooling water is 547.6 BTU and ammonia is super heated by 10°. Find the pound per pound of ammonia gas from the evaporating coil.

An ammonia, simple saturation cycle operates with the suction pressure of 291.6 KPA in the condenser pressure of 1204KPA develops 15 tons of refrigeration. Determine the theoretical horsepower of the compressor.

An ammonia ice plant operates between a condenser temperature of 35° C and the evaporator of -15° C. It produces 10 metric tons of ice per day from water at 30° C to ice at -5° C assuming simple saturation cycle determine the horsepower of the motor. If that diabetic efficiency of the compressor is 0.85 and mechanical efficiency 0.95 the specific heat of ice is 2.094 and the latent heat 335

Awin cylinder ammonia compressor with volume displacement of 14,726 cm³ operates at 300 RPM. Condenser and evaporator pressure are 1200 kPa and 227 kPa respectively specific volume of refrigerant at entrance of compressor is 528 L per kilogram. compression process is poly topic with an equals 1.20 and clearance factor of compressor is 2% determine the horsepower required

an ammonia being 22 kg is confirmed inside the cylinder equipped with the piston has an initial pressure of 413 kPa at 38° C. Is 3200 kJ of heat is added to the ammonia until it’s final pressure and temperature is 413 kPa and 100° C, respectively. What is the amount of work done by the fluid in kilojoules

A cylindrical flash tank mounted with its axis horizontal issues to separate liquid ammonia from ammonia vapor. Ammonia bubbles through the liquid with 70 m cube per minute leaving the disengaging surface. The disengaging rate is limited to 6 m/min. and the liquid level is operate with The liquid level 1/3 to the diameter from the top. Determine the diameter if the town is 1.5 m long.

A single acting twin cylinder ammonia compressor with bore equal to stroke, is driven by an engine at 250 RPM. The machine is installed in a chilling plant to produce 700 kW refrigeration at -18° C Evaporating temperature. At this temperature the cooling effect per kilogram mass is 1160 kJ the specific volume of vapor entering the compressor is 0.592 m cube per kilogram. Assume 85% volume efficiency determine the bore in millimeters.

And ammonia water could compressor receives the Presant specific volume 62 L per kilogram. It has a piston displacement rate of five metric cube per minute if a squirrel cage motor running at 1200 RPM drives the compressor and the average piston speed is 490 m per minute. Calculate the size of cylinder bore.

A vapor compression refrigeration system is designed to have a capacity of 150 tons of refrigeration. It produces chilled water from 22° C to 2° C. It’s actual coefficient of performance is 5.86 and 35% of power supply to pressure is lost in the form of friction and cylinder cooling losses determine condenser cooling water required for a temperature rise of 10° C

A two stage cascade vapor compression refrigeration system uses ammonia in the low temperature loop and R 12 in the high temperature loop. The ammonia provides 15 tons of cooling. If the high loop temperature requires 10.12 compressor power and low loop, 15.93 kW determine the COP of the system

in an pneumonia refrigeration system the temperature in the evaporator is -12° C and ammonia evaporator entry is 0.15113 while at exit is 0.95 dry. If the rate of ammonia circulation is 5.64 kg per minute determine the refrigerating capacity of the system and of saturated liquid in bay at -12° C is 144.29 kJ per Kilogram and 1447.74 kJ per kilogram, respectively

Determine the number of stages needed for us centrifugal pump if it is used to deliver 400 gallons per minute of water and pump power of 15 HP each impeller develops ahead of 30 feet

Radial flow pump operating at maximum efficiency at a specific speed of 2500 is to deliver 260 GPM against ahead of 129 feet at the rotative speed of 2100 RPM. Find the required number of stages.

Consider a refrigerator who supported what light bulb remains on continuously result of function of the switch. If the refrigerator has a COP of 1.3 and the cost of electricity is eight cents per kilowatt hour, determine the increase in the energy consumption of the refrigerator and it cost per year if the switch is not fixed.

A house was heated by Electric resistance heaters consumed 1200 kWh of electric energy in a winter month. If this house were heated instead by a heat pump that has an average performance factor of 2.4 determine how much money saved that month. A price of 0.0 85 kWh for electricity.

Determine the air standard deficiency of an engine on the diesel cycle with a clearance of 6% when the suction pressure is 99.7 KP and the fuel injected for 7% of the stroke. Assume K=1.4

A dealer advertises that he has just received a shipment of electric resistance heaters for residential buildings that have an efficiency of 100%. Assuming an indoor temperature of 21° and out the temperature of 10° C determine the Second law of efficiency of this heaters.

Heat and engine receives heat from a source at 1200 K at the rate of 500 kJ/s and reject the wasted heat to a sink at 300 K. If If the power output of the engine is 200 kW, the second Law Efficiency of this heat engine is?

A house is maintained at 22° C in winter by electric resistance heaters. If the outdoor temperature is 5° C the second floor efficiency of this resistors is.?

Asim turbine with 80% stage Efficiency team at seven MPA and 550° C and exhaust at 20 KPA. Determine the quality of exhaust.

The indicated thermal efficiency of two stroke diesel engine is 60%. Depression power is 15% of each generated determine the brake thermal of the engine

a fan draws 1.42 m cube per second of air at the static pressure of 2.54 CM of water through a 300 mm diameter and discharges it through a duck of 275 mm diameter. Determine the static fan efficiency if total fan is 75% and air is measured at 25° C and 760 mm mercury.

an impulse wheel at best produces 125 HP under head of 210 feet by what percent should the speed be increased for a 290 foot head

A mixing tank mixes, two inlet streams containing salts. The salt concentration stream one is 5% by weight, at stream two it is 15% by weight stream one flows at 25 kg/s and stream two flows at 10 kg/s. There is only One exit Stream find the salt concentration in the exit stream

In hydraulic plant, the difference in elevation between the surface of the water at intake and the tail race is 650 feet when the flow is 90 ft.³ per second, the friction Loss in the penstock Is 65 feet in the head utilized by the turbine is 500 feet. The mechanical friction in the turbine is 110 HP, and the leakage loss is 4CFS. Find hydraulic efficiency.

calculate the use factor of a power plant if the capacity factor is 35% and it operates 8000 hours during the year?

It is desert to double the COP of a reverse, Carnot Engine for cooling from 5.0 by racing the temperature repeat addition while keeping the temperature of heat rejection constant. By what percentage must the temperature of heat addition raised?

A group of 50 persons attend a secret meeting in a room which is 12 m wide by 10 m long and the ceiling height of 3 m. The room is completely sealed off and insulated. Each person gives up 150 kcal per hour of heat and occupies volume of 0.20 m³. Tarun has an initial pressure of 101.3 K to Pascal and temperature of 16°C. Calculate the room temperature after 10 minutes use R = 0.287 kJ per kilogram kelvin and CV is = 0.171 kcalorie per kilogram kelvin

student living in a 4 m x 6 m x 6 m dormitory room turns on her 150 what’s fun before she leaves the room on a summer day, hoping that the room will be cooler when she comes back in the evening. Assuming all doors and windows are tightly closed And disregarding any heat transfer through the walls in the windows, determine the temperature in the room when she comes back 10 hours later. Use specific heat values at room, temperature, and assume the room to be 100 kPa and 15° C in the morning when she leaves

an auditorium seating 1500 people is to be maintained at 80°F Fahrenheit, dry bulb and 60°F wet bulb temperature when outdoor air is 91°F drive and 75°F wet bulb. Solar heat load is 110,000 BTU per hour and supply air is at 60°F, determine the amount of supply air

The rate of heat transferred to the surroundings from a person at Rest is 400 kJ/h. Suppose that the ventilation system fails in auditorium containing 120 people And assuming that the energy goes into the air of volume 1500 m cube at initially 300 Kelvin, and 101KPE calculate the rate in degrees Celsius, per minute of air temperature change

4 m x 5 m x 6 m room is to be heated by a baseboard resistance heater. It is desire that the resistance heater be able to raise the air temperature in the room from 7° to 23°C within 15 minutes. Assuming no heat losses from the room, and an atmospheric pressure of 100 kPa, determine the required power of the resistance heater. Assume constant specific at room temperature.

Compute the maximum length of the discharge pipe installed on an outlet of pressure relief Device in for internal pipe diameter Of 0.5 inch and rated discharge capacity is 8 pounds per minute of air. Rated pressure of relief valve is 10 PSIG.

A certain gas at 101.325 kPa and 10°C whose volume is 2.83 m³ capacity. before admission, the storage vessel contain gas at the pressure and temperature of 137.8 kPa and 26°C after admission, the pressure increased to 1171.8 kPa. What should be the final temperature of the gas in the vessel in Kelvin.

Steam at 2 MPA and 250°C in rigid cylinder is cooled until the quality is 30%. Find the heat rejected from the cylinder.

4 m³ per hour pump delivers water to a pressure tank. At the start, the gauge read 138 kPa until it reads 276 kPa and then the pump was shot off. The volume of the town is 180 L at 276K, the water occupied 2/3 of the tank. Determine the volume of the water that can be taken out until the gauge reads 138 kPa.

A liquid dominated geothermal plant with a single plush separator receives water at 204°C. The separator pressure is 1.04 MPA. DIRECT CONTACT CONDENSER OPERATES AT 0.034 MPA. THE TAP POLYTROPIC EFFICIENCY OF 0.75. PER CYCLE OUTPUT OF 60 MW, WHAT IS THE MASS FLOW RATE OF THE WATER IN KILOGRAMS PER SECOND

At 305MM by 457 mm Four stroke single acting diesel engine is rated at 150 kW at 260 RPM. Fuel consumption at rated load is 0.56 kg/ kWh with a heating value of 43912 kJ per kilogram. Calculate the brake thermal efficiency.

A waste heat recovery boiler produces 4.8 MPA dry saturated steam from 104°C feed water. The Boiler receives energy from 6 kg/s of 954°C dry air. After passing through heat boiler, the temp temperature of the air has been reduced to 343°C. How much steam in kilograms is produced per second.

in gas unit, air enters the combustion chamber at 550 kPa, 227°C and 43 m/s. The products of combustion leave the combustor at 511 KPA, 1400°Celsius, and 180 m/s. liquid bill will enter with heating value of 43,000 kJ per kilogram. Fuel ratio of 0.0229. What is the combustor efficiency in pecent?

Atul Bain has a mechanical efficiency of 93%, barometric efficiency of 95% and total efficiency of 82%. If the effective head is 40 m, find the total head.

steam generator with economizer and air heater has an overall drop loss of 25.78 cm of water. If the stop gases are at 177°C and that atmosphere is at 101.3 KPE and 26°C What theoretical height of stock in meters is needed when no drop pan is used? Assume that the gas constant for the flue gasses is the same as that of air

A single acting compressor has a volume metric efficiency of 89%, operates at 500 RPM. It takes in air at 100 KP and 30°C and discharges it at 600 kPa. The area is handled at 8 Cubic meters per minute at discharged condition. Compression isentropic, find the inactive pressure in Kpa

An empty open can is 30 cm high with a 15 cm diameter. Dakan, with the open and down, is pushed under the water with the density of 1000 kg/m³. The water level in the the top of the is 50 CM below the surface.

Cylindrical pipe with water flowing downward at a 0.03 m³ per second top diameter of 0.08, bottom diameter of 0.04 m and height of 1.5 m. Find the pressure inside the pipe.

300 mm diameter pipe, discharges water at the rate of 200 L per second. .1 on the pipe has a pressure of 260 KPA and 3.4 m below .1 is .2 with the pressure of 300 kPa. compute the head loss between points, one and two.

a rigid tank contains 2 km of nitrogen and 6 kmol of carbon dioxide gases at 300 K and 115 Mpa. dind the tank volume using the ideal gas equation

a rigid tank contains 5 kg of an ideal gas at 4 atm and 40° C. now vibe is open, and half of mass of the gas is allowed to escape. If the final pressure in the town is 1.5 ATM the final temperature in the tank is?

at 12 DC electrical motor draw a current of 15 A. How much work in kilojoules does this motor produce over 10 minute period of operation

An ideal Brayton cycle has a network output of 150 kJ per kilogram and backwork of 0.4. If both the turbine and the compressor had an isentropic efficiency of 80%, the network output of the cycle would be?

A Carnot A, B and C connected in Siri, so that the heat rejected from a will be the heat added B. and he rejected from will b added to C. if he added to eight is 1000 kW, find the work out put of C

Find the thrust and efficiency of a two 2 m diameter propellers through each flows a total of 600 m³ per second of air to 11.33 Newton per meter cube. The propellers are attached to an airplane moving at 250 KPh through still air. neglect eddy losses

Water is pumped at 1 Cubic meter per second elevation 5 m through A flexible hose A 100% efficient rated at 100 kW