10:23 ← Quiz 1 19 of 20 -/5 LTE 46 Ō 51:46 Current Attempt in Progress A cylinder fitted with a piston contains 7.69 L of a gas at a pressure of 5.72 atm. The entire apparatus is contained in a water bath to maintain a constant temperature of 25 °C. The piston is released and the gas expands until the pressure inside the cylinder equals the atmospheric pressure outside, which is 1.00 atm. Assume ideal gas behavior and calculate the amount of work done by the gas as it expands at constant temperature. Latm eTextbook and Media Save for Later Attempts: 0 of 2 used Submit Answer Using multiple attempts will impact your score. 50% score reduction after attempt 1 AA education.wiley.com с

10:23 ← Quiz 1 19 of 20 -/5 LTE 46 Ō 51:46 Current Attempt in Progress A cylinder fitted with a piston contains 7.69 L of a gas at a pressure of 5.72 atm. The entire apparatus is contained in a water bath to maintain a constant temperature of 25 °C. The piston is released and the gas expands until the pressure inside the cylinder equals the atmospheric pressure outside, which is 1.00 atm. Assume ideal gas behavior and calculate the amount of work done by the gas as it expands at constant temperature. Latm eTextbook and Media Save for Later Attempts: 0 of 2 used Submit Answer Using multiple attempts will impact your score. 50% score reduction after attempt 1 AA education.wiley.com с

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter11: Calibrating Instruments

Section: Chapter Questions

Problem 7RQ: Accuracy of a thermometer is more important in the ______temperature ranges.

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A water tube boiler has a capacity of 1000 kg/hr of steam. The factor of evaporation is 1.3, boiler rating is 200%, boiler efficiency is 5%, heating surface area is 0.91 m²/boiler Hp, and the heating value of fuel is 18,400 Kcal/kg. The total coal available in the bunker is 50,000 kg. Determine total number of hours to consume the available fuel. 1.
1- A steam stripper is used to help removing wallpapers. It comprises of a tank of waterwith an electrical heating element. To generate steam, from which a long rubber tubeconveys the steam to the head which contact with the wallpaper to be removed.(i) The power rating of the electrical heating element is 2 KW, and the tank holds about3 liters of water. Estimate the time it would take from switching the power on tosteam to be generated. (ii) Once steam has started to be produced, estimate how long you could workcontinuously before having to refill the tank. Assume that all water initially in thetank can be evaporated into steam. Also, neglect any heat loss from the tank.Data :Room Temperature 20 oCHeat capacity of water, Cp 4.19 KJ kg-1 K-1Latent heat of vaporization of water at 100 oC, hfg 2257 KJ kg-1(iii) Stream is to be condensed in the condenser of a steam power plant at atemperature of 50 oC with cooling water from a nearby lake which enters the tubesof the condenser at 18 oC at…
Steam leaves an industrial boiler at 645.3kPa and 151.2°C. A portion of the steam is fed through a throttling calorimeter and released to the atmosphere when the calorimeter pressure exceeds 104.3kPa. If the calorimeter's steam temperature is 113.8°C, a. What is the amount of moisture that is escaping from the boiler container? Show unit analysis & conversion. b. Calculate the mass of the saturated vapor if the mass of the saturated liquid is 15kg. Show unit analysis & conversion. @645.3kPa and 151.2°C: hf = 624.56kJ/kg hfg =2123.3kJ/kg @104.3kPa and 113.8°C: h2=2506.7kJ/kg
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When an evaporator experiences a heat- load increase, the suction pressure A. remains constant.
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4. A water tube boiler has a heating surface area of 500 m². For a developed boiler hp of 825. Determine the percent rating of the boiler. The percent rating of water tube boiler is 200%, factor of evaporation of 1.08 and heating surface area is 256 m?. Find the rate of evaporation. 5.
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