ANSWER:
Given that
A 200 liter water heater uses 5.83 kilowatts of electric power. How long would it take...
3. a) An electric water heater uses 5500 W (240 V) of electrical power. It has a capacity of 40 gallons (150 liters or 150 kg). If the initial temperature of the water in the water heater is 20° C, how long will it take to heat the water to a final temperature of 60° C at 100% efficiency? b) How long will it take to heat the water to a final temperature of 60°C at 80% efficiency? c)If electrical...
An electric immersion heater has a power rating of 1800 W. If the heater is placed in a 1.2 kg of water at 25 °C, how many minutes will it take to bring the water to a boiling temperature? (Assume that there is no heat loss except to the water itself. cwater=4186 J/kg.°C)
Quick help please How long will it take the water-heater in Question 1 to raise the temperature of 200 liters of water from 20°C to 55°C? The heat-pump system shown is designed to provide water-heating and space-cooling. The system includes a heat exchanger to subcool the R134a refrigerant at the outlet of the water heater while heating the refrigerant at the outlet of the evaporator. Given the following data, determine the enthalpy at each station, 1 through 6, using the...
An electric immersion heater has a power rating of 1200 W. If the heater is placed in a 1.6 kg of water at 15 °C, how many minutes will it take to bring the water to a boiling temperature? (Assume that there is no heat loss except to the water itself. cwater=4186 J/kg.°C)
How long would it take to heat 192ml of water from 20 0C to 76 0C using a heater with a power rating of 50W (i.e., it puts out 50Joules of energy every second)? (For water: use 334kJ/kg for the latent heat of fusion, 2.26X103kJ/kg for the latent heat of vaporization, and 4.19kJ/kgoC for the specific heat. Also for water: remember that 1 ml has a mass of approximately 1g)
How long does a 57 kW water heater take to raise the temperature of 110 L of water from 24°C to 37°C? The specific heat of water is 4186 J/kg·K. The density of water is 1.00 g/cm3.
How long does a 65 kW water heater take to raise the temperature of 160 L of water from 24°C to 37°C? The specific heat of water is 4186 J/kg·K. The density of water is 1.00 g/cm3
How long does a 64 kW water heater take to raise the temperature of 150 L of water from 22°C to 38°C? The specific heat of water is 4186 J/kg·K. The density of water is 1.00 g/cm3.
5. (a) An insulated container contains 1kg of water and a 50 Watt heater. How long does it take the heater to raise the temperature of the water by 10°C? (b) How long would it take if the container was filled with 1kg of air instead of water? The specific heat of air is roughly 0.24cal/g. K.
An immersion heater has a power rating of 600 watts. It is used to heat water for coffee. How long (in minutes) should it take to bring 1.1 L of water from room temperature (20°C) to 84°C?