2-37 Water is being heated in a closed pan on top of a range while being stirred by a paddle wheel. During the process, 30 kJ of heat is transferred to the water, and 5 kJ of heat is lost to the surrounding air. The paddle-wheel work amounts to 500 Nm. Determine the final energy of the sys- tem if its initial energy is 10 kJ. Answer 35.5 kJ ,5 kJ 500 N-m 30 kJ

Consider how the Beer Heater impacts multiple aspects of distillation columns used in the bourbon industry. In these continuous distillation columns, name three three parameters that are coupled with each other?

A chiller cools liquid water for air-conditioning purposes. If 1.5 kg/s water at 20 °C, 100 kPa is cooled to 5 °C in a chiller. What should be the rate of heat transfer?

A shaft of 0.06-m diameter is heat treated in a gas-fired furnace whose gases is at 1200 K and provide a convection coefficient of 125 W/m² K. If the shaft enters the furnace at 300 K and stays in the furnace. (1) What is the centerline temperature (in K) of the shaft after 900 seconds? (2) What is the value of the dimensionless Fourier number? The shaft material has a density of 7000 kg/m², thermal conductivity of 50 W/m.K, and specific heat capacity 500 J/kg.K. Please show your work and assumptions.

3. Show the step-by-step process. Do not use shortcut methods. Make it as detailed as it can be. MAKE A DIAGRAM AND ENCODE THE ANSWER.

Springs in a suspension system of automobiles are made of steel rods heated and wound into coils while ductile. Consider steel rods (p = 7832 kg/m³, Cp = 434 J/kg K, k = 63.9 W/m-K) with a diameter of 2.5 cm and length of 1.27 m. The steel rods are heated in an oven with a uniform convection heat transfer coefficient of h = 20 W/m²-K. The steel rods are heated from an initial temperature of 20°C to the desired temperature of 450°C before being wound into coils. Determine the required ambient temperature in the oven if the steel rods must be heated to the desired temperature within 10 minutes. Prove the lump parameter analysis can be used.

A refrigeration system requires 1.5 kW of power for a refrigeration rate of 4 kW.(a) What is the coefficient of performance?(b) How much heat is rejected in the condenser?(c) If heat rejection is at 313.15 K (409C), what is the lowest temperature the system can possibly maintain?

Answer: 24.187 °C

Question is from the class of Heat Transfer please show all steps, Thank you.

Problem 4. In order not to damage the resistance in the kettles, the difference between the temperature of the heater and the fluid should not exceed 25 °C. If the heat transfer area between the fluid and the heater is 78.5 cm² and the heat transfer coefficient is 400 W/m².K, find the maximum allowable power of the heater in order to boil water?