If 60 percent of the heat generated by the burner is transferred to the water during boiling, determine the rate of evaporation of water. The specific enthalpy of saturation temperature of 95°C is hfg = 2269.6 kJ/kg (Table A-4). (Round the final ans

Q: When boiling food the cooking temperature is limited to about 100° C. Pressure cookers allow for…

A: Given data as per question Food temperature =1000 c Mass of water =4 kg Heat added =7000 watt…

Q: Methane gas having a pressure of 11.6 MPa and temperature of -43.68 degrees Celcius is flowing at a…

A: Given data as per question The pressure of methane =11.6 MPa The temperature of methane =-43.680c…

Q: Moist air at 30oC and 50% relative humidity is cooled to 10oC. If the air has a volumetric flow rate…

A: Given:Moist air inlet condition, Tdb,1=30oC, ϕ1=50%Final temperature of the air, Tdb,2=10oCThe…

Q: ated liquid-vapor mixture of water at 225 kPa. Initially, one-quarter of the m ce, and a current of…

A: Given that ,  m=5.6kgmvapour+mliquid=5.6kg Initially ,  mliquid=0.25m=1.4kgmvapor=4.2kgx=4.25.6=0.75

Q: 5500 kg of steam is produced per hour at a pressure of 7.6 bar in a boiler with dryness fraction…

A: The efficiency of a boiler is a measure of how well the method and equipment used to convert…

Q: Determine the change in Enthalpy, no need to answer question in picture, that's just for the context…

A: Given   Initial enthalpy, h1 = 247.77 kJ/kg    Final enthalpy, h2 = 268.18 kJ/kg Find   Change in…

Q: In the air conditioning process in the humidifier, the air at a dry bulb temperature of 20 degrees…

A: Initial Condition of air, =20oC and 35% RH  Final humidity of air, =50% RH

Q: In a rigid container with a volume of 0.4 m3, there is 2 kg of liquid-vapor mixture at 100 kPa…

A:

Q: An 80-L vessel contains 4 kg of refrigerant-134a at a pressure of 160 kPa. Determine(a) the…

A: The pressure of the refrigerant P = 160 kPa Type of refrigerant R-134a The mass of the refrigerant m…

Q: Water is boiled at 100°C electrically by a 3-kW resistance wire. Determine the rate of evaporation…

A: Given dataThe temperature of the water is.The power of the resistance wire is at temperature of the…

Q: The water was heated up until the temperature is 200°C. At this time, a pressure regulating valve…

A:

Q: Many gyms and health clubs have steam saunas, which are small steam-filled rooms. Traditionally,…

A:

Q: The air in a house are at a total pressure of 100 kPa and 28°C DB. The surface temperature of a…

A:

Q: Airat90°Cand1.00atm(absolute)contains10.0mole%water.Acontinuousstreamofthisairenters a…

A:

Q: The average atmospheric pressure in Denver (elevation = 1610 m) is 83.4 kPa. Determine the…

A: Given: Pressure, p = 83.4 kPa

Q: A rigid container contains refrigerant-134a. The volume, the mass and the pressure of the…

A: Given:Volume of the container, V=79 LMass of the refrigerant, m=3.95 kgPressure of the container,…

Q: Consider two cases of vaporization of a saturated liquid to saturated vapor at constant pressures of…

A: Answer: ◆ Energy required for vaporization at 102.7 kPa = 2255.675 kJ/kg. ◆ Energy required for…

Q: Determine the phase of the refrigerant R-134a at pressure of 240 kPa and specific volume of 0.07…

A: Refrigerant = R134a Pressure, P=240 kPa Specific volume, v=0.07m3/kg

Q: Four cubic meters of water is to be heated by means of four 1.5 kW, 230-V immersion heating…

A:

Q: hydrogen at 200 kpa and 500 K is contained in a 3-m3 rigid tank. The cooling of the gas is continued…

A:

Q: Determine the enthalpy in kJ of a 4.3 kg of stean at 3MPa and 76.98% wet

A: Given data,  Steam is at P= 3MPa  Dryness fraction x=76.98%= 0.7698  m= 4.3 kg

Q: A cooking pan whose inner diameter is 20 cm is filled with water and covered with a 4-kg lid. If the…

A: Given     Pressure = 101 kPa

Q: What is the heat transfer rate required to condense the water, cool the water vapor, and cool the…

A: An air-conditioner cools a flow of ambient moist air at 30°C and 80% relative humidity with 0.24…

Q: A rigid tank with a volume of 6.69 m^3 contains 15kg of saturated liquid-vapour mixture of water at…

A: The objective of the question is to find the temperature at which the liquid in the tank is…

Q: When boiling food the cooking temperature is limited to about 100° C. Pressure cookers allow for…

A:

Q: Water is boiled at atmospheric pressure by a horizontal polished copper heating element of diameter…

A:

Q: piston eylinder device contains 0.8 kg of steam at 300°C and 1 MPa Steam is cooled at constant…

A:

Q: Water in a 5-cm-deep pan is observed to boil at 98°C. At what temperature will the water in a…

A: Water temperature at 5 cm depth = 980c

Q: Water in a tank is to be boiled at 143.27 Pa absolute pressure by a 1.5-cm-diameter brass heating…

A: The pressure should be P = 143.27 kPa not Pa.

Q: Q.2) An ekctric resistor placed in the well-insulated rigid tank is connected to a 110-V source and…

A:

Q: A cylindrical pan containing water is placed on top of a heating unit. The pan is teflon-pitted…

A:

Q: A 20% (by wt) sodium hydroxide solution is being concentrated to 50% (by weight) using an evaporator…

A: Given:- % of sodium: 20% temp of heating: 399k pressure: 13.3 kPa

Q: . A well-insulated piston-cylinder device contains 5 L of saturated water at a constant pressure of…

A: GivenV=5L=5×10-3 m3P=150KPaPw=500WI=8At=38minx=0.50

Q: A rigid tank with a volume of 0.1402 m³ contains 1 kg of refrigerant-134a vapor at 240 kPa. The…

A:

Q: What is the specific enthalpy (kJ/kg) for a saturated liquid when the temperature is 250 deg C?

A: At saturated liquid the dryness fraction is zero, and the specific enthalpy can be determine…

Q: Find the mass in metric tons per day of at -5 °C that would theoretically made in a refrigerating…

A: Answer: The mass in metric tons per day is 32.8340 tons/day.

Q: Q.1) An insulated piston-cylinder de vice contai ns 10 L of saturated liquid water at a constant…

A:

Q: What is the enthalpy change during the process in which100.0 g of water at 50.0 °C is cooled to ice…

A: given:m=100gT1=500CT2=-300C

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.