What do you mean by specific volume?

What do you mean by specific volume?

Specific volume is a property of materials, defined as the number of cubic meters occupied by one kilogram of a particular substance. The standard unit is the meter cubed per kilogram (m 3 /kg or m 3 · kg -1 ).

How do you find the specific volume of an ideal gas?

If one sets out to determine the specific volume of an ideal gas, such as super heated steam, using the equation ν = RT/P, where pressure is 2500 lbf/in2, R is 0.596, temperature is 1960 °R. In that case, the specific volume would equal 0.4672 in3/lb.

Is specific volume the same as volume?

Summary – Volume vs Specific Volume Volume is a thermodynamic property of a substance. Specific volume is the volume of a unit mass of a substance. The difference between volume and specific volume is that volume is an extensive property whereas specific volume is an intensive property.

What is specific air volume?

Specific volume is defined as the total volume of dry air and water vapor mixture per kg of dry air and water vapor (SI-units). The specific volume can be expressed as: v = V / ma + mw (11)

How do you find a specific volume in a psychrometric chart?

Calculate specific volume

  1. Find the point of 250C in the dry bulb axis. …
  2. Then, find the point of 200C in the wet bulb axis. …
  3. Mark the interception point of above two lines.
  4. Identify the constant specific volume lines nearest to the interception point (blue colour).

How do you find the specific volume of a saturated liquid?

From the appropriate saturation table, at the given value of pressure or temperature we can find the values of vf and vg then use equation (5), v = vf + x(vg – vf), to find the specific volume.

How do you calculate specific volume of a wet steam?

Specific Volume (ν) of Wet Steam X = Dryness (% / 100) νf = Specific Volume of Saturated Water.

What is the symbol for specific volume?

Typically specific volume uses the symbol v. The density of a substance is defined as the mass per unit volume, and it is therefore the reciprocal of the specific volume. Density is designated by the symbol ρ. Specific volume and density are intensive properties.

How do you calculate specific volume in a psychrometric chart?

Calculate specific volume

  1. Find the point of 250C in the dry bulb axis. …
  2. Then, find the point of 200C in the wet bulb axis. …
  3. Mark the interception point of above two lines.
  4. Identify the constant specific volume lines nearest to the interception point (blue colour).

What is specific volume HVAC?

SPECIFIC VOLUME – The volume of a substance per unit of mass; i.e., standard air 13.33 cubic feet per pound.

How do you calculate specific humidity?

Specific Humidity Calculator

  1. Formula. SH = (.622 * P / ( P – Pw ) ) * 100.
  2. Patrial Pressure of Water Vapor.
  3. Total Pressure.

Jan 18, 2022

How do you calculate specific volume from quality?

3:369:18Steam Tables: Calculating Quality – YouTubeYouTube

How do you calculate specific volume of a steam table?

2:175:56How to Use Steam Tables – YouTubeYouTube

What is specific volume of steam?

Specific volume of steam: Volume occupied in m3 by 1 kg of steam. Mass density (or Density) of the steam: Specific mass of the steam in a volume of 1 m3. Specific enthalpy.

How do you calculate specific volume of superheated vapor?

1:543:31Specific Volume of Superheated Steam | Thermodynamics – YouTubeYouTube

How do you calculate RH from dry and wet bulbs?

Relative humidity can be found by subtracting the temperature on the wet-bulb thermometer from the temperature on the dry-bulb thermometer and using a relative humidity chart.

What is specific volume of refrigerant?

The specific volume is 0.6575 ft3/lb (1 ÷ 0.6575 = 1.52). Thus, the volume value in Column 5 is the reciprocal of the density value of the saturated vapor.

What is specific and relative humidity?

Relative humidity, often expressed as a percentage, indicates a present state of absolute humidity relative to a maximum humidity given the same temperature. Specific humidity is the ratio of water vapor mass to total moist air parcel mass. Humidity plays an important role for surface life.

What is specific humidity of air?

SPECIFIC HUMIDITY refers to the weight (amount) of water vapor contained in a unit weight (amount) of air (expressed as grams of water vapor per kilogram of air). Absolute and specific humidity are quite similar in concept.

What is VF and VG in steam table?

vf = Specific volume of saturated water (liquid). vg = Specific volume of saturated steam (gas).

What is specific volume of water Vapour?

Temperature Specific volume (0-100°C at 1 atm, >100 °C at saturation pressure)
(°C) (cm3/g) (gal(US liq)/lb)
0.1 1.00015 0.11981
1 1.00010 0.11981
4 1.00003 0.11982

How do you calculate RH?

Calculate relative humidity RH using the formula, RH = 100 × {exp(17.625 × Dp/(243.04 + Dp))/exp(17.625 × T/(243.04 + T))}.

How do you calculate relative humidity from DBT and WBT?

Relative humidity can be found by subtracting the temperature on the wet-bulb thermometer from the temperature on the dry-bulb thermometer and using a relative humidity chart.

What is the difference between specific volume and density?

The specific volume of a substance is defined as the volume per unit mass. Typically specific volume uses the symbol v. The density of a substance is defined as the mass per unit volume, and it is therefore the reciprocal of the specific volume.

How do you measure specific humidity?

One way to measure relative humidity is to use a sling psychrometer, a device made of two thermometers, One thermometer measures the temperature of the dry air (dry-bulb thermometer) and the other measures the temperature of the air as evaporation occurs (wet-bulb thermometer).

Are specific humidity and humidity ratio same?

Relative humidity, often expressed as a percentage, indicates a present state of absolute humidity relative to a maximum humidity given the same temperature. Specific humidity is the ratio of water vapor mass to total moist air parcel mass.

How do you calculate specific volume of superheated steam?

1:073:31Specific Volume of Superheated Steam | Thermodynamics – YouTubeYouTube

How do you calculate RH humidity?

To calculate relative humidity with temperature and dew point, follow the given instructions:

  1. Measure the air temperature T, in °C.
  2. Find out the dew point temperature Dp, in °C.
  3. Calculate relative humidity RH using the formula, RH = 100 × {exp(17.625 × Dp/(243.04 + Dp))/exp(17.625 × T/(243.04 + T))}.

Jun 6, 2022

How do you calculate wet bulb and dry bulb temperature?

Wet Bulb temperature can be measured by using a thermometer with the bulb wrapped in wet muslin. The adiabatic evaporation of water from the thermometer and the cooling effect is indicated by a "wet bulb temperature" lower than the "dry bulb temperature" in the air.

How do you calculate specific density?

0:5611:25Specific Gravity and Density of Mixtures – Fluids Physics ProblemsYouTube