Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN: 9781305578296
Author: John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher: Cengage Learning
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Textbook Question
Chapter 35, Problem 7RQ
Air that contains all of the moisture that it can hold is known as______.
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Gruebler's formula for the following mechanism?
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The guide vane angle of a reaction turbine (Francis type
make 20° with the tangent. The moving blade angle at entry is
120°. The external diameter of runner is 450 mm and the internal
diameter is 300 mm. Runner width at entry is 62.5mm and at exit
100mm. Calculate the blade angle at exit for radial discharge.
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Compressor Selection: (Q1)
While a manufacturing cell is running, the calculated flow rate of air into a compressor is 40 SCFM.
Which compressor from this list should be selected?
A. A compressor that uses 80 SCFM
B. A compressor that uses 40 SCFM
C. A compressor that delivers 80 SCFM
D. A compressor that delivers 40 SCFM
Chapter 35 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 35 - Name the four comfort factors.Ch. 35 - State three ways the body gives off heat.Ch. 35 - Lower room temperatures can be offset in winter by...Ch. 35 - Perspiration cools the body by________.Ch. 35 - Relative humidity is measured using a A....Ch. 35 - Name the two unknowns that are easiest to obtain...Ch. 35 - Air that contains all of the moisture that it can...Ch. 35 - In order for an air-conditioning coil to remove...Ch. 35 - For a room to be comfortable, the following...Ch. 35 - With a dry-bulb reading of 70F and a wet-bulb...
Ch. 35 - Relative humidity in question 10 is _______%.Ch. 35 - A gas furnace has an output of 60,000 Btu/h. The...Ch. 35 - A house has 3500ft2 of floor space and a 9-ft...Ch. 35 - If the fresh-air requirements for the house in...Ch. 35 - If the outside fresh-air conditions were to be 93F...Ch. 35 - If the air leaving the cooling coil were to be 55F...Ch. 35 - Using the answers from questions 14, 15, and 16,...Ch. 35 - Describe why fresh air is important in a house.
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- SCFM Calculation: (Q1) A pneumatic system running a manufacturing cell works on 80 psi and requires a flow rate of 10 CFM to operate. A compressor must be selected to run the cell. Calculate the amount of air going into the compressor to run this cell. (Hint: This will be in SCFM) Accurate to two decimals. Do not write the unit.arrow_forward: +00 العنوان >scóny : + 개 العنوان I need a actanicu urawing wit д い Ants nation Taxi pu +9635. The guide vane angle of a reaction turbine (Francis type make 20° with the tangent. The moving blade angle at entry is 120°. The external diameter of runner is 450 mm and the internal diameter is 300 mm. Runner width at entry is 62.5mm and at exit 100mm. Calculate the blade angle t exit for radial discharge. ۲/۱ = 44 985arrow_forward:+B العنوان I need a actanicu urawing with Car nation The guide vane angle of a reaction turbine (Francis type make 20° with the tangent. The moving blade angle at entry is 120° The external diameter of runner is 450 mm and the internal diameter is 300 mm. Runner width at entry is 62.5mm and at exit 100mm. Calculate the blade angle at exit for radial discharge.arrow_forward
- Gay-Lussac's Law: (Q2) A gas in a pressure vessel has a temperature of 40 °C and a pressure of 20 psi. Heat is added and its pressure rises to 80 psi. What is the new temperature in °C? Use Two decimal places. Do not write the unit.arrow_forward:+B العنوان I need a actanicu urawing with Car nation The guide vane angle of a reaction turbine (Francis type make 20° with the tangent. The moving blade angle at entry is 120° The external diameter of runner is 450 mm and the internal diameter is 300 mm. Runner width at entry is 62.5mm and at exit 100mm. Calculate the blade angle at exit for radial discharge.arrow_forwardThe volume of a gas is increased, and the temperature is maintained consent. The original volume was 1200 mm3 and its pressure was 100 psi. What is the new pressure in psi, if the volume is increased to 2250 mm3? Use Two decimal places. Do not write the unit.arrow_forward
- :+B العنوان I need a actanicu urawing with Car nation The guide vane angle of a reaction turbine (Francis type make 20° with the tangent. The moving blade angle at entry is 120° The external diameter of runner is 450 mm and the internal diameter is 300 mm. Runner width at entry is 62.5mm and at exit 100mm. Calculate the blade angle at exit for radial discharge.arrow_forwardThe guide vane angle of a reaction turbine (Francis type make 20° with the tangent. The moving blade angle at entry is 120°. The external diameter of runner is 450 mm and the internal diameter is 300 mm. Runner width at entry is 62.5mm and at exit 100mm. Calculate the blade angle at exit for radial discharge.arrow_forwardanswer this as soon as possible, please.arrow_forward
- A piston–cylinder device contains 50 kg of water at 250 kPa and 25°C. The cross-sectional area of the piston is 0.1 m2. Heat is now transferred to the water, causing part of it to evaporate and expand. When the volume reaches 0.26 m3, the piston reaches a linear spring whose spring constant is 100 kN/m. More heat is transferred to the water until the piston rises 20 cm more. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Determine the work done during this process. The work done during this process is kJ.arrow_forwardA 4-m × 5-m × 7-m room is heated by the radiator of a steam-heating system. The steam radiator transfers heat at a rate of 10,000 kJ/h, and a 100-W fan is used to distribute the warm air in the room. The rate of heat loss from the room is estimated to be about 5000 kJ/h. If the initial temperature of the room air is 10°C, determine how long it will take for the air temperature to rise to 25°C. Assume constant specific heats at room temperature. The gas constant of air is R = 0.287 kPa·m3/kg·K (Table A-1). Also, cv = 0.718 kJ/kg·K for air at room temperature (Table A-2). Steam enters the radiator system through an inlet outside the room and leaves the system through an outlet on the same side of the room. The fan is labeled as W sub p w. The heat is given off by the whole system consisting of room, radiator and fan at the rate of 5000 kilojoules per hour. It will take 831 Numeric ResponseEdit Unavailable. 831 incorrect.s for the air temperature to rise to 25°C.arrow_forwardA piston–cylinder device contains 50 kg of water at 250 kPa and 25°C. The cross-sectional area of the piston is 0.1 m2. Heat is now transferred to the water, causing part of it to evaporate and expand. When the volume reaches 0.26 m3, the piston reaches a linear spring whose spring constant is 100 kN/m. More heat is transferred to the water until the piston rises 20 cm more. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Determine the final pressure and temperature. The final pressure is kPa. The final temperature is ºC. Find the work done during the processarrow_forward
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