2.5 kW of solar energy comes on top of the solar panel placed on the roof of a house. 25% of this incoming energy is lost to the environment, and the remaining energy is used to increase the temperature of the water passing through the solar panel from 30 oC to 60 oC. Determine how many liters of water per hour should pass through the solar panel in order to achieve the desired increase in water temperature under continuous operating conditions. You can get the density of the water as 1000 kg / m3. Also, neglect the pressure loss, kinetic and potential energy changes of the water flowing through the solar panel.,

Q: 2. A rectangular swimming pool is 10 meter deep, 15 meters wide and 20 meters long. If the pool is…

A: Pool dimensions -Deep - 10 meterWidth - 15 meterLength = 20 meter Level of water in pool is 1 m…

Q: Work of 1 Joules is done in stretching a spring from its natural length to 20 cm beyond its natural…

A: Given data: x=20 cmW=1 Joules Need to determine the force required to hold the spring at 20 cm.

Q: The compressor work of an air compressor is 100 KW. If the piston speed is 15 m³/sec, determine the…

A: Given: compressor work, W = 100 KW piston speed (VD) = 15 m3/sec To find:  mean effective pressure…

Q: Emperor Wang So weighs 790 N and is pushing a golden cart that weighs 440 N with its contents up a…

A:

Q: Determine the Kinetic energy in BTU of a 8 lbm block moving at a velocity of 85 ft/s.

A: Given data  mass of block (m)= 8 lbm velocity of block(v) = 85 ft/s

Q: Nitrogen with a mass of 2.23 kg expands at constant pressure. The initial pressure and temperature…

A:

Q: The properties at the inlet and the exit states of the air compressor are shown in the figure. The…

A: P

Q: A glass is cleaned in hot water and reaches a temperature of 50°C. The glass is placed on a table…

A:

Q: Determine the energy needed to accelerate an 800-kg car from rest to 100 kph.

A: Given data: u=0 m/sv=100 km/h=27.78 m/sm=800 kg Need to determine the energy required.

Q: A mass of 200 kg of water at 20°C is stored in a tank. An engine coupled to a propeller inside the…

A:

Q: Nitrogen with a mass of 4.69 kg expands at constant pressure. The initial pressure and temperature…

A: Given data:- Mass = 4.69kg P1 =P2 = 170kpa T1= 22°C T2 = 207.8 °C

Q: On a hot summer day, the air in a well-sealed room is circulated by a 55 W fan (Note that the motor…

A: Write the net shaft power.   Pshaft=55 W   Write the density of the air.   ρ=1.15 kg/m3   Write the…

Q: In a process, a closed system receives electric power of 25W, does work at the rate of 40W, receives…

A:

Q: A spherical balloon of 1 m diameter contains a gas at 150 kPa. the gas inside the balloon is heated…

A:

Q: Water is being heated in a closed pan on top of a range while being stirred by a paddle wheel.…

A:

Q: Nitrogen with a mass of 4.68 kg expands at constant pressure. The initial pressure and temperature…

A: Given:- m=4.68kg, P1=P2=172Kpa, T1=21.4 deg.C, T2=205.7 deg.C Find:- W=? Kj

Q: 2.5 kW of solar energy comes upon renovation of a house. 25% of this incoming energy is lost to the…

A:

Q: In the factory where you work, there is a system like the one below, where you have two tanks at…

A: Given: To find: Volumetric flow rate

Q: A 0.1 kg of ice at 0 degrees Celsius is heated until half of it becomes water at 100 degrees Celsius…

A: To find: The total amount of heat required to accomplish this Given: The mass of ice is m=0.1 kg.…

Q: The work done during the expansion of a gas is 5.31 kJ. The relationship between the pressure and…

A: The work done for the given expansion process can be given as following - Work done =…

Q: A mass of 7 kg undergoes a process during which velocity decreases from 32 m/s to 19m/s, while the…

A: Givenm=7kgv1=32m/sv2=19m/su1=1.24kJ/kgu2=2.08kJ/kgQ1=2kJQ2=-0.8kJ

Q: A gas undergoes a process during which volume and pressure are related by the equation PV =…

A: P1 = 200 kpa V1 = 20 L V2 = 54.36 L Find the work done Answer is a) 3.99 KJ

Q: Determine the Kinetic energy in BTU of a 7 lbm block moving at a velocity of 85 ft/s

A: given  weight = 7 lb  and velocity ,v=85ft/s

Q: An unknown composition of gas has undergone a compression process in a piston-cylinder assembly. The…

A:

Q: A cylinder is heated to cause a piston to move upwards using the expansion of gas inside it. If…

A: PV = nRT P is constant. V1/T1 = V2/T2  V1/V2 = T1/T2 V1 = 1ft^3 T1 = 500 R T2 = 700 R A = 60 in^2 l…

Q: A 20lbm object is located 300 ft above the ground. What is the potential energy of the object in…

A:

Q: 2–96E A 2.4-in-diameter soap bubble is to be enlarged by blowing air into it. Taking the surface…

A:

Q: In a non-flow process carried out on 5.5 kg of substance, there is a heat energy losses 50 kJ/kg and…

A: Mass (m) = 5.5 kg Internal energy loss(ΔU) = 50 kj/kg Work transfer (W) = 85 kj/kg

Q: You are designing a new engine; this device operates with liquid fuel as an input and generates…

A: The dimensions of energy produced by the engine, density, pressure, and power are written as…

Q: A 75 kg diver climbs up a 6.5 m high diving board in 50 s, how much work is done by the diver and…

A: M=75kg x = 6.5 m t = 50s g=9.80m/s2 To find 1.Work Done 2.Power

Q: Water is being heated in a closed vessel on top of a range while being stirred by a paddle wheel.…

A:

Q: A tank of air is expanded via heat transfer at a constant pressure such that its volume is 2.5 times…

A:

Q: A0.2-kg rocket is launched from rest and rises 29 m above its starting point. In the process, 425 J…

A: Given     Mass, m = 0.2 kg   Height , h = 29 m

Q: A dormitory room measures 4m x 6m x 6m. A student turns on a 150 watts fan before leaving the room…

A:

Q: An airplane weighing 20,950.1 lb, at ground is flying at an altitude of 32,557.43 ft at 543 miles…

A:

Mechanisms of heat transfer

Heat transfer is an essential discipline in thermal engineering that deals with the transfer, conversion, usability, and creation of heat or thermal energy. Transfer of heat occurs through various mechanisms like conduction, convection, radiation, and change of phases. All these mechanisms have distinct characteristics, but these mechanisms can simultaneously occur in an identical system.