A large mining company was provided with a 3000 cm3 of compressed air tank. Air pressure in the tank drops from 700 KPa to 180 KPa while the temperature remains unchanged at 28 deg Celcius. What percentage has the mass of air in the tank been reduced? a.72% b.78% c.74% d.76%

A large mining company was provided with a 3000 cm3 of compressed air tank. Air pressure in the tank drops from 700 KPa to 180 KPa while the temperature remains unchanged at 28 deg Celcius. What percentage has the mass of air in the tank been reduced? a.72% b.78% c.74% d.76%

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

Chapter2: Matter And Energy

Section: Chapter Questions

Problem 29RQ: If 3000 ft3 of air is crossing an evaporator coil and iscooled from 75F to 55F, what would be the...

See similar textbooks

Related questions

Q: A close pressurized vessel having a volume of 342ft3 contains air at 214psig and 85 ̊F. Assuming…

Q: T₁ = 10°C $₁ = 30% V₁ = 45 m³/min 10°C Leo000000 Air T₂ = 22°C $₁ = 30% 22°C T3= 25°C = 60% 03= 60%…

Q: 5.5-10 During construction of a highway bridge, the main girders are cantilevered outward from one…

A: According to the given data Load, P = 9.5 kN/m Length, L = 48 m We need to find Maximum bending…

Q: 1. A cylindrical air compressor tank with an inside diameter of 600 mm has a safe working pressure…

A: Given data Diameter= 600mm Pressure= 1 MPa Tensile stress = 75 MPa Find the thickness of the wall…

Q: 1. Heat transfer is thermal energy in transit due to a spatial difference. 2. Write three types of…

A: “Since you have posted a question with multiple sub-parts, we will provide the solution only to the…

Q: When pressure is 0.05 atm, what is the: The melting temperature of ice The boiling temperature of…

A: The melting point of ice decreases with decreasing pressure. At 0.05atm, the phase diagram of water…

Q: Identify whether the water with the following condition is subcooled liquid, saturated liquid, wet…

A: Using steam table we compare all the given state value of steam .. Abd then we decided .

Q: Solve for the missing values in the following table for refrigerant-134a,

A: Using Property table and P-h chart of R-134a, the following required values are estimated. Please…

Q: How much heat, KJ must be transferred to 20 kg of air to increase the temperature from 20oC to 280oC…

A: Givenairm=20kgT1=20oCT2=280oC

Q: We are designing an air conditioning process that will supply air at 20 [C] and 45% RH to a large…

A: (b) The relationship between mass and volumetric flow rate , pressure and temperature for a gas can…

Q: 1. The mean effective pressure of an engine running at 300 rpm is 500 kPa. What is the…

A: Givenpart aP=500kPaN=300rpmd=250mmL=450mmpart bh1=1500kJ/kgV1=150m/sh2=1200kJ/kg

Q: 10. At a temperature of 30 °C, the pressure of the gas in a deodorant can is 3 atm. Calculate the…

Q: 10 m3 of free air is compressed to 8 bar gauge, every minute. What will be the air volumetric…

A: Given data: The volume air compressed in one minute is 10 m3. The final gauge pressure of the air…

Q: A closed vessel contains air at a pressure of 130 kN/m´ gauge and temperature of 30°C. The air is…

A: Given Data P1=130 KN/m2 T1=30C=303K T2=60C=333K Patm=759 mmHg=101.19 KN/m2 Absolute pressure…

Q: 5.17 : The following particulars relate to a test c the surface condenser of a steam turbine.…

Q: The exact differential equation of enthalpy can be expressed as below: dH=-uCpdp + CdT where C:…

A: Solution: Given Data:

Q: If 100 ft3 of atmospheric air at zero Fahrenheit temperature are compressed to a volume of 1 ft3 at…

Q: The high pressure units on a steam plant operate at 10bar (gauge), and the condensate is sub-cooled…

A: Write the given data with suitable variables. P1=10 bar guage∆T=9.5 Km˙=10 kg/sP2=1.5 bar

Q: Steam leaves an industrial boiler at 645.3kPa and 151.2°C. A portion of the steam is fed through a…

A: Given Data: Calorimeter's steam temperature, T2= 113.8°C Steam pressure at boiler exit, P1=645.3…

Q: How long (in minutes) can a 75.0 US gallon receiver supply 8.5 SCFM of compressed air if the…

Q: 1. If 1 gallon of oil = 1.4 therm, how many gallons have been wasted by heat loss in Feb? (1 therm =…

A: Heat loss in the month of February (Number of days = 28) is-Conversion factors: 1 gallon = 1.4…

Q: The pressure ratio during the constant volume portion of combustion in a Dual Combustion engine is…

Q: Manometers A cylindrical column is partially filled with three liquids: water, mercury, and…

Q: 15) What is the Eutectic Temperature for the system?

Q: 2- What is the difference between subcooled liquid and saturated liquid?

A: Differance between sub cooled liquid and saturated liquid :-

Q: I. Specify whether the substance is subcooled liquid, compressed liquid, saturated liquid, saturated…

A: Given data: Here, water is considered as the substance. So refer to the steam table at 0.125 MPa.…

Q: [Extra Credit] Consider the mechanical syste figure below with elements: M=1kg, K₁=4N/m, K2=2N/m,…

A: To Draw : The free body diagram of the mechanical system. Given : The mass is M=1 kg The coefficient…

Q: Oxygen gas (MW = 32 kg kmol 10 kg and occupies V = 9.6945 m³. Note: Runiversal = 8.314 statements…

A: Givenoxyge gas Molar weight =32 kg/k molTemperature T=100oCpressure P=100kPamass m=10kgvolume…

Q: Three types of fluids stack in an open tank as shown in the plot. Select the expression of the…

A: Pressure can be defined as force per unit area. It can be measured with the help of pressure…

Q: An unknown ideal gas at 53 deg F and 3.3 in Hg (gauge) is flowing through an irregular duct. To…

A: The above-given problem is related to the mixture of gases. So to obtain the solution to the above…

Q: An auditorium is designed to seat 4500 people. The ventilation rate is 1.62×107 ft³/hr of outside…

A: We have given the problem An auditorium is designed to seat 4500 people. The ventilation rate is…

Q: QUESTION 20 Determine the type of steam, given: Temperature- 220C Pressure = 2.21 MPa O Superheated…

A: Given,

Q: You are working in the compressor design department of a large compressor manufacturer. As the new…

A: “Since you have posted a question with multiple sub-parts, we will provide the solution only to the…

Q: /(1.0 kg of steam at 15.0 bar).

A: Givensuperheated steam at T1°C=20barsuperheated steam at T2°C=15.0bar

Concept explainers

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

Question

a.72%

b.78%

c.74%

d.76%

show your complete solution

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1 Given data

VIEW

Step 2 Calculate mass of air in the tank reduced

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

17. The nitrogen gas a volume of 23.4ml in a tube at a 18°C and a pressure of 781mmHg. The next day the volume of the nitrogen was 26.2mL with the barometer still reading 781mmHg. What was the temperature on the second day? a. 67.3915°C b. 27.1701°C c. 52.8385°C d. 68.5611°C
please solve and explain and show all step in solution
A large mining company was provided with a 3 cu. meters of compressed air tank. Air pressure in the tank drops from 700 kPa to 180 kPa while the temperature remains unchanged to 28 degree C. What percentage has the mass of air in the tank been reduced? a. 74 b. 72 c. 78 d. 80 e. 76
HVAC UPVOTE WILL BE GIVEN. PLEASE WRITE THE COMPLETE SOLUTIONS. please anwer all the subquestions. thank you. 3. Air at 22°C db & SATURATED Solve for the following: a. RH b. DPT c. V d. h e. RH
Hi Please help me answer this question, answers are already provided, all i need is the solution to understand our lesson. Thank you very much! All is well!
02 A- Find internal energy and enthalpy of superheated steam at 100 bar and degree of superheating of 110 °C?
Evaporative cooling PLEASE DO NOT USE PSYCHROMETRIC CHART. THANK YOU In the diagram below inlet air is drawn over a pool of liquid water in a steady-state, steady-flow isobaric process. Evaporation on the pool resultsin saturated air at the exit. The pool of liquid water is assumed to be at the same temperature as the exitair. Discharge fans at the exit provide a volumetric flow rate of 800,000 ft3/min. In the diagram above inlet air is drawn over a pool of liquid water in a steady-state, steady-flow isobaric process. Evaporation on the pool resultsin saturated air at the exit. The pool of liquid water is assumed to be at the same temperature as the exitair. Discharge fans at the exit provide a volumetric flow rate of 800,000 ft^3/min. Problem #1: Assume that the exit temperature is T2 = 90 °F. For this model of the system and from thedata provided determine:a) The mass flow rate dry air through the system (lbm/sec).b) The rate of heat that is output from the R-134a condenser Qout…
Please provide complete solution and diagram for this problem. A 2m3 air tank has an initial pressure of 200 kpa and 45oC. After 2 kg of air used, thetemperature drops to 35oC. What is the final pressure? A. 156.23 kpa B. 134.78 kpa C. 167.45 kpa D. 105.31 kpa Answer: D
1.) A hand pump is used to inflate a bicycle tire to a gauge pressure of 70 psi. a) How much work must be done if each stroke of the pump is an adiabatic process and what is the final temperature of the gas? b) We inflate the tire in two steps: (i) an isobaric compression and (ii) an isochoric increase in temperature. Calculate the work done by gas/"us" and/or heat added/removed during the two steps! Is this a viable alternative to the adiabtic compression Explain! Atmospheric pressure is 1 atm, the air temperature is initially 25° C, and the volume of the air in the tire remains constant. Useful values: A bicycle tire is 26 in diameter and has a cross-sectional area of 2 in² [1 in = 2.54 cm]. 1 lb corresponds to a mass of 0.445 kg. c) For Take-Home only Solve the questions in a) and b) in terms of the initial pressure P₁ = P*, the final volume Vf = V* and the pressure ratio K = Pf/P*!
SHOW COMPLETE SOLUTION PLS NOTE: THE ANSWER IS SHOWN IN THE PICTURE
H.W.1/: The air in an automobile tire with a volume of 2.60 ft3 is at 90°F and 20 Pisa. Determine the amount of air that must be added to raise the pressure to the recommended value of 30 Pisa. Assume the atmospheric pressure to be 14.6 Pisa and the temperature and the volume to remain constant?
An automobile tire contains 3730 cu.in. of air at 32psig and 80°F. Provide the following answers with their respective solutions: a. What mass of air is in the tire? b. C. In operation the air temperature increases to 145°F. If the tire is inflexible, what is the resulting percentage increase in gage pressure? What mass of the 145°F air must be bled off to reduce the pressure back to its original value?