16. Consider the figure below. An electric stove having a rating of 3kW is use to boil a 6Li of tap water (Initially at 20°C and whose density at this temperature is 1020kg/m). If useful energy is around 62% of the total energy supplied by the stove. Determine how long would it take to vaporized all the water in the pan. 17. In previous problem, determine the total kW-hr used by the electric stove in the given condition.

16. Consider the figure below. An electric stove having a rating of 3kW is use to boil a 6Li of tap water (Initially at 20°C and whose density at this temperature is 1020kg/m). If useful energy is around 62% of the total energy supplied by the stove. Determine how long would it take to vaporized all the water in the pan. 17. In previous problem, determine the total kW-hr used by the electric stove in the given condition.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter1: Basic Modes Of Heat Transfer

Section: Chapter Questions

Problem 1.75P: Referring to Problem 1.74, how many kilograms of ice can a 3-ton refrigeration unit produce in a...

See similar textbooks

Similar questions

A reheat cycle with two stages of reheating is executed with steam expanding initially from 25 MPa and 600 °C. The two reheater pressures are 4 MPa and 1 MPa, and the steam leaves each reheater at 600 °C. Condensation occurs at 40°C. For 1 kg/s of steam, what is QA in kW? Remember, 1. For values taken from the steam tables: Use them as is, do not round off. 2. For values obtained by interpolation and final answers obtained by solving, use FOUR (4) decimal places. 3. Use the steam tables provided
Steam is supplied to a two-stage turbine at 48 bar and 400 °C. It expands in the firstturbine until it is just dry saturated, then it is re-heated to 400 °C and expandedthroughthe second-stage turbine. The condenser pressure is 0.04 bar. Determine the specific work output of the system to 3 d.p? what is the specific entalphy in kJ/kg for state 2?
QUESTION 3 a boiler plant generates 5000kg/hr of steam at 3000kPa and enthalpy of 2995k/kg. The water entering the plant has a temperature of 12°C. At exit from the economizer the temperature of the water is 85°C. The enthalpy at exit from the evaporator is 2533kJ/kg and the fuel used has a calorific value of 32MJ/kg. Neglect the combustion losses and take the thermal efficiency of the plant to be 80%. Determine: 1.1the final temperature of the steam;the heat absorbed in each component of the plant in kJ/kg fuel. 1.2 The heat absorbed in each component of the plant in KJ/kg
A reheat cycle with two stages of reheating is executed with steam expanding initially from 25 MPa and 600 °C. The two reheater pressures are 4 MPa and 1 MPa, and the steam leaves each reheater at 600 °C. Condensation occurs at 40°C. For 1 kg/s of steam, what is the engine work in kW?
1. Steam is supplied to a two-stage turbine at 140 bar and 400C. It expands isentropic ally until it is just dry-saturated. Then it is reheated to 350C at constant pressure and expanded in the second-stage turbine to the condenser pressure of 0.2 bar. If the isentropic efficiency of the second stage is 78%. Calculate the specific steam consumption and the thermal efficiency. Determine the pressure in reheater also to solve the whole problem
A flashed-steam geothermal power plant is located where underground hot water is available as saturated liquid at 725 kPa, The well head pressure is 670 kPa. The flashed steam enters a turbine at 645 kPa and expands to 15 kPa, when it is condensed. The flow rate from the well is 33.3 kg/s. Determine: Draw the T-S diagram The mass flow rate of steam in kg/s The power produce in KW The cooling water flow in kg/s if water is available at 25 oC and a 15°C rise is allowed through the condenser.
1. Steam at 14 Mpa and 700°C is received by a regenerative cycle. Before condensation at 70 kPa, steam extracted for feedwater heating at 5 Mpa. On the mass basis of 1 kg of throttle steam, find the thermal efficiency of the engine. PLEASE SHOW COMPLETE SOLUTION (DRAW THE TS DIAGRAM)
PROBLEM: A flashed-steam geothermal power plant is located where underground hot water is available as saturated liquid at 715 kPa, The well head pressure is 680 kPa. The flashed steam enters a turbine at 635 kPa and expands to 15 kPa, when it is condensed. The flow rate from the well is 35.3 kg/s. Determine: Draw the T-S diagram The mass flow rate of steam in kg/s The power produce in KW The cooling water flow in kg/s if water is available at 25 oC and a 15°C rise is allowed through the condenser.
A 2 kg/sec of steam is delivered to the turbine at 5 MPa and 600 degree celsius. Before condensation at 30 degree celsius, steam is extracted for feed water heating in the Closed feedwater heater with drain pump forward at 0.65 MPa. Determine the following: (a) mass flowrate of extracted steam in kg/sec, (b) Heat added in kJ/min (c) Heat rejected in kJ/min, (d) Ideal turbine work, (e) Pump work in KW, and (f) thermale efficiency
I- In the compression process of an internal combustion engine, the thermodynamic energy of the gas is increased with 370J. During the process, the gas releases heat to the cooling water with 20J. Please calculate the compression work consumed during the process.
Steam is delivered to turbine at 5.4 MPa and 600 degree C. Before condensation at 31 degree C, steam is extracted for feed water heating at 0.6 MPa. The turbine exhaust is 60 degree C. the required values of some state point properties are tabulated below. 7. Determine the quality of steam at the condenser inlet.
In a refrigerator the power rating impressed on the compressor is 1.2 kW. The circulating wire in evaporator is 5 kW and the cooling water took away 10 kW from condenser coil. The operating temperatures range is 18ºC and 0ºC and their corresponding latent heats are 170 kJ/kg and 230 kJ/kg and the difference between theliquid energy is 35 kJ/kg. Find the actual COP of the system (2) relative COP, assuming the vapor is just dry and saturated at the end of the compression.