GIVE AN EXAMPLE OF HOW TO ENERGY TRANSFER BY HEAT?

Q: determine optimum velocity of steam

A: Given; For a single stage impulse turbine with; rotor diameter,d =2 mSpeed,N=3000 rpmNozzle angle…

Q: give a specific example of a process that has the energy changes and transfers described. (For…

A: According to the question the condition is ΔEth ˂ 0, W ≠ 0, Q ≠ 0. This condition means that energy…

Q: How work can always be converted to heat directly and completely, but the reverse is not true.

A: Both work and heat are the two different forms of energy. Heat is the energy interaction because of…

Q: Why is work done a scalar quantity?

A: Physical work is obtained as dot product of force and displacement. Since force and displacement are…

Q: 3. How much heat is released by a system when 45Jof work is done on it to decrease energy to 23 J

A: Given Data Work done on the system is : W=45 J Decreased energy of system is : ∆E=-23 J Now from…

Q: (a) Following table shows observations on a certain machine. Load Effort 100 N 10 N 200 N 14 N Find…

A: Since you have asked multiple questions, only the first question is solved for you. If you want any…

Q: An isolated system is at rest. There is no change in the system potential energy. What is the change…

A: Solution: The internal energy of a system is determined by the random, uneven molecular movement; in…

Q: Construct a mass and energy flow diagram illustrating the following scenarios: a. When you breathe…

A: During the winter session, the outside air temperature is low as compared to the lungs moist air…

Q: system consume 28,800 kw-hr, month of energy, there are 20% of energy is lost due to cooling system…

A:

Q: Using schematics of fridges and engines operating betwcen high temperature and low temperature…

A: Given question: Using schematics of fridges and engines operating at high temperature and low…

Q: A closed system loses energy by heat transfer at the rate of 10kJ/s. If the system operates at…

A:

Q: Q2) steady state heat transfer means? Unsteady heat transfer means?

A: Define the steady and unsteady state heat transfer.

Q: Explain the wind turbine its part and function of each parts, how it will convert energy?

A: I have mentioned the part names and pics with the help of Power point (for the better understanding…

Q: When a person enters his house, which is completely closed in summer, he sees that the temperature…

A: Air conditioner Air conditioner is the device which remove the heat from the room and made room…

Q: A 3.0-inch wall of fire brick, k = 8.0 Btu / (ft)(hr) (F/ in) has one surface at 335°F, the other at…

A:

Q: Heat in the amount of 7.5 kJ is added to a closed system while its internal energy decreases by 12…

A:

Q: Create a background of the study about impacts of Biofuels production.

A: Biomass may be turned directly into liquid fuels, known as "biofuels," to assist fulfil…

Q: n wall then the work done by force on wall

A: given: when  a force is applied on wall then the work done by force on wall is?

Q: Define Renewable energies such as wind are called “green energy” since they emit no pollutants or…

A: Renewable energy: Renewable energy is the energy produced from renewable sources such as Sun, Wind,…

Q: A Carnot heat pump delivers 2500 Btu of heat to a room maintained at 78°F by allowing room air to…

A:

Q: A thermodynamical system performs work and at the same time exchanges energy to the outside…

A: Given         Work done = 9.794 J  Internal energy = 8.569 J  Find   Heat exchange

Q: Q2(i) how the pollution is caused by the solid industrial waste, industrial influent and industrial…

A: The industrial manufacturing and operation process results in many solid wastages like coal ash, red…

Q: 1.The quality of heat is independent of its temperature. We note that the quality of energy means…

A: Given Statement:- The quality of heat is independent of its temperature. We note that the quality…

Q: the ground worldwide as 356,000 quads, how long will it take to exhaust our fossil resources,…

A:

Q: What is the importance of rice milling and rice milling system in rice?

A:

Q: Explain the effect of temperature to the efficiency result of radiation

A: Radiation efficiency: The ratio of the power radiated to the net power accepted by any object is…

Q: Q2/A: What are the technologies that promote the sustainable energy?

A: Sustainable energy are basically renewable energy which can be used again and again, these types of…

Q: Explain in your own words: a. Green-house effect b. Global warming

A: GREEN HOUSE EFFECT   A greenhouse is a house product of glass that may be used to grow plants. The…

Q: QI/Drive the work in polytrophic process when( n=1) ,(n=1.3)

A: Given data

Q: Come up with one problem related to energy balance for open system?

A:

Q: As an ECM it is proposed to decrease yoa by 1/4. Assuming that the interior temperature is Ti=21°C,…

A: GivenTI =21°C = 294KTOAV =5°C = 278KHeating hours Nh=3500hoursCpa =1.005kj/kg.cρa =1.2kg/m3heating…

Q: How reversible process differs from irreversible process?

A: Reversible process: A reversible process is one which we can reverse, and take the system back to to…

Q: he second law of thermodynamics state that a machine that operates in a cycle, taking in energy by…

A: The given statement is true.

Q: ergoes a process in whicl same time interval, 220 J ot it

A:

Q: 3. Steam enters a turbine with an enthalpy of 1292 Btu/lb and leaves with an enthalpy of 1098…

A:

Q: A 400 lbm object accelerates from 10.0 ft/s to 17.5 ft/s. How much work has been done?

A:

Q: B. For any power cycle, the real efficiency can be: I. > NCarnot I. < Ncarnot II. NCarnot

A: We have to solve above question

Q: Steam  enters  a  turbine  with  an  enthalpy  of  1292  Btu/lb  and  leaves  with  an  enthalpy of…

A:

Q: the irreversibility (in W) due to heat

A: Given data, One side of the wall,Tin=400 KOther side at,Tout=300 KRate of heat transfer, Q=1000…

Q: Electrical energy Where does the electricity come from?

A: Solution:

Q: give an example of METHOD OF HEAT TRANSFER that can only found and we can do in kitchen or home.…

A:

Q: Give an example of in the absence of any work interactions, the energy change of a system is equal…

A: According to the first law of thermodynamics                        δQ-δW=∆E

Q: An electric storage battery which can exchange heat only with a constant temperature atmosphere goes…

A: Given data  An electric storage battery which can exchange heat only with a constant temperature…

Q: A pulley system made up of 3 pulleys, is used to lift a load of 10kg through a height of 50cm. If…

A: Mechanics problem can be solved as:

Q: Which is TRUE for constant volume process. O A workdone is not equal to zero O B. V/V2=T/T2 O…

A: Answer: Option C is correct. C. Change in internal energy is equal to heat transfer.

Q: A perpetual motion machine is a machine that never stops, hence its name. It is a machine that can…

A: Concept: 1) First law of thermodynamics: It states that energy neither be created nor destroyed but…

Q: A pump handling a liquid raises its pressure from 2 bar to 20 bar. Take density of the liquid as 870…

A: Given:-  Intial pressure = 2 bar Final pressure = 20 bar  Density of liquid = 870 kg/m3     To…

Q: Liquid octane enters an internal combustion engine operating at steady state with a mass flow rate…

A: Given data:

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.