What was the mass of hot water withdrawn from the tank

Assignment Help Mechanical Engineering
Reference no: EM13710327

Hot water is provided to a house by an electric water heater which uses a 60L tank. The electric heater is rated for a 1.6kW. The hot water tank is completely full with water at 80°C when someone starts a shower. The shower faucet mixes cold water at 20°C and a flow rate of 0.06kg/s with hot water at an unknown flow rate from the water heater. After an 8min shower period, the water in the hot water heater has dropped to a temperature of 60°C. The heater ran continuously during the shower period and drew in cold water at 20°C at the same rate as hot water left it. What was the mass of hot water withdrawn from the tank?

Reference no: EM13710327

Questions Cloud

Energy was dumped into lake erie instantaneously : Assuming 4,686,400,000 MWh of energy was “dumped” into lake Erie instantaneously, what would be the increase in the water temperature of the lake. Assuming all of that energy was dumped to the earth’s atmosphere instantaneously. How thick (i.e. altit..
How do power plant lakes get rid of heat : If the combined cycle power plant in problem 3 rejects its heat to a nearby lake with 16,000 acre feet of water, how fast in degrees/day will the temperature of the lake rise if it is assumed that the lake is insulated and cannot reject heat in any o..
Steam turbine has an inlet temperature : A steam turbine has an inlet temperature of 500°C and pressure of 500kPa. At its exit the temperature is 40°C and its quality is 90%. What is the maximum power output of this turbine if its flow rate is 8 kg/s and it has an efficiency of 90%?
Demonstrate how the project will be completed : Develop a list of project tasks and the dates for completion to demonstrate how the project will be completed within the semester - Provide an overview of the main points to be covered in the report and a concise outline of the paper content and str..
What was the mass of hot water withdrawn from the tank : Hot water is provided to a house by an electric water heater which uses a 60L tank. The electric heater is rated for a 1.6kW. The hot water tank is completely full with water at 80°C when someone starts a shower. The shower faucet mixes cold water at..
Air flows steadily through a one-inlet : Air flows steadily through a one-inlet, one-exit control volume. At the inlet, which has a flow area of 28 cm2, the air is at 600 kPa, 500 K, and has velocity of 30 m/s. At the exit, the pressure is 300 kPa, the temperature is 456.5 K, and the veloci..
Estimate the power required to maintain cylinder temperature : A heated cylinder, 0.0635 m long and 0.0127 m diameter, is exposed to an air stream in cross flow arrangement having air speed of 10.5 m/sec. If the cylinder surface temperature is 50 C and the air temperature is 22 C, estimate the power required to ..
Combined cycle power plant burns natural gas : A combined cycle power plant burns natural gas and produces 600MW and has an efficiency of 48%. Find the whole sale cost of natural gas and determine the cost of the fuel burned per second for the plant to produce it rated output of 600MW
Steam heated at constant pressure in a steam generator : Steam heated at constant pressure in a steam generator enters the first stage of a supercritical reheat cycle at 28 MPa, 520°C. Steam exiting the first-stage turbine at 6 MPa is reheated at constant pressure to 500°C. Each turbine stage has an isentr..

Reviews

Write a Review

Mechanical Engineering Questions & Answers

  Why is correct tightening of friction grip bolts important

why is the correct tightening of friction grip bolts important?

  Yield strength for alloy that has average grain diameter

The yield strength for an alloy that has an average grain diameter of 4.4 x 10-2 mm is 115 MPa. At a grain diameter of 7.1 x 10-3 mm, the yield strength increases to 258 MPa. At what grain diameter, in mm, will the yield strength be 237 MPa?

  The system has a partial condenser thus the distillate

a continuous steady state distillation column is fed a mixture that is 70 mol n-pentane and 30 mol n-hexane. feed rate

  Determine the dimensionless groups using dimensionless

an airplane wing with chord length of 5ft and span of 30ftis designed to move through standard air at a speed of

  Determine how long it will take for the refrigerator to

a household refrigerator that has a power input of 80w assume constant work input over time and a coefficient of

  The electrical resistivity of 90wt cu-10wt ni cupronickel

the electrical resistivity of 90wt. cu-10wt. ni cupronickel alloy at room temperature is 16x10-8?.m. the electrical

  A tank has two rooms separated by a membrane room a has 1

a tank has two rooms separated by a membrane. room a has 1 kg air and volume 0.5 m3 room b has 0.75 m3 air with density

  Estimate the best efficiency point and the maximum

a centrifugal pump with backward-curved blades has the following measured performance when tested with water at 20degcq

  A steady flow of liquid ethylene glycol inside finned

a steady flow of liquid ethylene glycol inside finned tubing is cooled from an inlet state of 85c and 2000kpa to an

  A storage tank holds 75 cubic meters of a gas at 28deg c

a storage tank holds 75 cubic meters of a gas at 28deg c and a pressure of 130kpa. the gas appears to have a molecular

  Water vapor enters a turbine at 6 mpa and 400degc and

water vapor enters a turbine at 6 mpa and 400degc and leaves the turbine at 100 kpa with the same specific entropy as

  A 3 cm thick stainless steel thermal diffusivity 00000044

a 3 cm thick stainless steel thermal diffusivity 0.0000044 k16.3 plate initially at 500degc is suddenly exposed to

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd