Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Mechanical Engineering Expert

problem 1: Differentiate between impulse and reaction turbines.

problem 2: A single phase single acting reciprocating air compressor has a bore of 20 cm and a stroke of 30 cm. The compressor runs at 600 rpm. The clearance volume is 4% of the swept volume and index of compression and expansion is 1.3. The suction conditions are 0.97 bar and 27o C and delivery pressure is 5.6 bar. The atmospheric conditions are at 1.01 bar and 17o C. Find out:

a) The free air delivered in m3/min 
b) The volumetric efficiency referred to the free air conditions. 
c) The indicated power.

problem 3: 2 kg/s of air enters the LP cylinder of a two phase reciprocating air compressor. The total pressure ratio is 9. The air at inlet to compressor is at 100 kPa and 35o C. The index of compression in each cylinder is 1.3. Find out the intercooler pressure for perfect inter-cooling. Also, find out the minimum power needed for compression, and percentage saving over single phase compression. Tame R = 0.287 kJ/kg K and Cp = 1 kJ/kg K.

problem 4: A three phase reciprocating air compressor compresses air from 1 bar and 17oC to 35 bar. The law of compression is pv1.25 = c. The law is same for all phases of compression. Find out the minimum power required to compress 15 m3/min of free air. Also find out the intermediate pressures. Suppose that the perfect inter cooling and neglect the clearance.

problem 5: A four cylinder, double acting compressor is needed to compress 30 m3/min of air at 1 bar and 25o C at a pressure of 15 bar. Find out the capacity of motor needed and cylinder dimensions if the following data are given.

a) Speed of the compressor = 310 rpm
b) Clearance volume = 3.5%
c) Stroke to bore ratio = 1.2
d) Mechanical efficiency = 82%
e) Index of compression 1.3

problem 6: One kg or air at 35o C DBT and 60% RH is mixed with 2 kg of air at 20o C DBT and 13o C dew point temperature. Compute the vapors pressure and dew point temperature of stream one, enthalpy of both streams and specific humidity of the mixture.

problem 7: With a schematic diagram, describe the requirement of a winter air conditioning system.

problem 8: Define the term Specific Humidity, Dry Bulb Temperature, Relative Humidity and Wet Bulb Temperature.

problem 9: 100 m3 of air per minute at 15o C DBT and 80% RH are heated till its temperature is 20o C. Compute heat added to air per minute, RH of the heated air and wet bulb temperature of the heated air.

problem10: prepare down the merits and demerits of vapor absorption system over a vapor compression system.

Mechanical Engineering, Engineering

  • Category:- Mechanical Engineering
  • Reference No.:- M93733

Have any Question? 


Related Questions in Mechanical Engineering

A solid circular shaft of 40 mm diameter is to be replaced

A solid circular shaft of 40 mm diameter is to be replaced by a hollow circular tube. If the outside diameter of the tube is limited to 60 mm, what must be the thickness of the tube for the same linearly elastic material ...

16smce310 16scve310 - engineering skills project brief

16SMCE310 / 16SCVE310 - Engineering Skills Project Brief: Flume Ride Introduction Employers are constantly asking for engineering graduates who have good team skills, are problem solvers and are good communicators. On to ...

You have been introduced to a number of different tools

You have been introduced to a number of different tools that can be used to help IE's and MfgE's analyze and develop solutions to make processes more effective and efficient. Watch the video located at http://www.iienet2 ...

The force applied to a nut in a nutcracker is larger than

The force applied to a nut in a nutcracker is larger than the force P applied to the handles. Model the top element of the nutcracker as a beam as shown, and find the forcce on the nut as a function of P and lengths a an ...

1 the deepest known point in the ocean is 11034 m in the

1. The deepest known point in the ocean is 11,034 m in the Mariana Trench in the Pacific. Assuming sea water to have a constant density of 1050 kg/m 3 , determine the pressure at this point in atmospheres. 2. Determine t ...

I need research paper of 3 pages about any topics in

I need research paper of 3 pages about any topics in Thermodynamics. 1. Benedictine Orphanage and a new medical building in Tanzania are in need of power supply.  Please design a system which provides power economically ...

Derive a formula for the minimum energy in the

Derive a formula for the minimum energy in the two-dimensional Using model, if the interaction energy between each spin and each of its eight nearest neighbors is -D. Assume that the model consists of a rectangular array ...

1 determine the capillary rise for a water-air-glass

1. Determine the capillary rise for a water-air-glass interface at 40°C in a clean glass tube having a radius of 1 mm. 2. Determine the difference in pressure between the inside and outside of a soap film bubble at 20 °C ...

A series of calibration tests is conducted on a pressure

A series of calibration tests is conducted on a pressure gage. At a known pressure of 1000 psia it is found that 30 percent of the readings are within 1 psia of the true value. At a known pressure of 500 psia, 40 percent ...

A solid circular rod of known radius is twisted in a

A solid circular rod of known radius is twisted in a testing machine with a known torque T. Only one strain gage is available. Does each of the test setups below give us enough information to determine the shear modulus ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen