Question

1. The specific heat of water is 1.0 Btu/lb * °F and its density is 62.4...

1. The specific heat of water is 1.0 Btu/lb * °F and its density is 62.4 lb/ft3. Determine the specific heat
capacity of water.
2.The specific heat of concrete is 0.27 Btu/lb * °F and its density is 140.0lb/ft3. Determine the specific
heat capacity of concrete.

3. Moist air (at sea level) is at a dry bulb temperature of 80°F and a wet bulb temperature of 67°F. Find
the relative humidity and the dew point temperature.


4.The wet bulb thermometer reads 60°F and a dry bulb thermometer reads 72°F. Find the dew point
temperature, relative humidity and humidity ratio.

0 0
Add a comment Improve this question Transcribed image text
Answer #1

Since specific heat capacity or specific heat of water is given already , there should be total heat capacity of water rather than specific heat capacity of water .

Add a comment
Know the answer?
Add Answer to:
1. The specific heat of water is 1.0 Btu/lb * °F and its density is 62.4...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • Exercise 2 Moist air at 1 atm. barometric pressure has a dry bulb temperature of 40°C...

    Exercise 2 Moist air at 1 atm. barometric pressure has a dry bulb temperature of 40°C and a wet bulb temperature of 320C. Using both the equations for the moist air properties and the psychrometric chart find: g) the partial pressure of the water vapor h) humidity ratio i) relative humidity j) dew-point temperature k) specific volume 1) enthalpy of moist air Insert the data and the results from the chart in the following table: Enthalpy Specific kJ/kg m/kg Humidity...

  • Use a psychrometric chart to determine the properties of air under different conditions. 1-Find the properties...

    Use a psychrometric chart to determine the properties of air under different conditions. 1-Find the properties of air at 70 degrees F and 50% relative humidity. Find humidity ratio, wet bulb temperature, dew point, enthalpy, and specific volume. 2-Find the properties of air at 55 degrees F and 30% relative humidity. Find humidity ratio, wet bulb temperature, dew point, enthalpy, and specific volume. 3-Air enters a furnace at a dry bulb temperature of 60 degrees F and 50% relative humidity...

  • Show all steps: A thermometer with a wet cloth attached to its bulb reads 20C when...

    Show all steps: A thermometer with a wet cloth attached to its bulb reads 20C when air is blowing around it. If the air has a dry bulb temperature of 33C, what is the relative humidity and dew point temperature? How much water could be condensed out of a 100 m3 volume? (Ans: 1.04kg)

  • 1.What are the relative humidity, humidity ratio, dew point, and enthalpy for a condition where the...

    1.What are the relative humidity, humidity ratio, dew point, and enthalpy for a condition where the dry‐bulb temperature is 95 oF and the wet‐bulb temperature is 70 oF? 2.What are the relative humidity, enthalpy and humidity ratio of moist air with the dry bulb temperature of 26.5 oC and dew point of 15 oC?

  • Moist air is at 80F (26.67C) dry-bulb, 0.0150 lb-w/lb-da (0.0150 kg-w/kg-da) humidity ratio, pressure of 14.696...

    Moist air is at 80F (26.67C) dry-bulb, 0.0150 lb-w/lb-da (0.0150 kg-w/kg-da) humidity ratio, pressure of 14.696 psia (101.35 kPa). Determine the dew-point temperature, relative humidity, volume in cu ft/lb-da (cu meters/kg-da), and enthalpy in Btu/lb-da (kJ/kg-da) using the moist air property tables and the ideal gas equations. What error is incurred using the ideal gas approach? Compare these results with the psychrometric charts (available in ASHRAE Fundamentals)

  • Air at 95°F, 1 atm, and 10% relative humidity enters an evaporative cooler operating at steady...

    Air at 95°F, 1 atm, and 10% relative humidity enters an evaporative cooler operating at steady state. The volumetric flow rate of the incoming air is 895 ft3/min. Liquid water at 68°F enters the cooler and fully evaporates. Moist air exits the cooler at 70°F, 1 atm. There is no significant heat transfer between the device and its surroundings and kinetic and potential energy effects can be neglected. a)Determine the mass flow rate of the dry air in lb(dry air)/min....

  • Exercise 3 Moist air at 1 atm. barometric pressure has a dry bulb temperature of 29...

    Exercise 3 Moist air at 1 atm. barometric pressure has a dry bulb temperature of 29 C and a wet bulb temperature of 22°C. Using the psychrometric chart and the table for saturated vapor find the following air properties: Pr T- 40 a) the partial pressure of the water vapor b) humidity ratio c) relative humidity d) dew-point temperature e) specific volume ) enthalpy of moist air

  • The atmospheric air 32 °C dry bulb temperature and 70% relative humidity supplied to the cooling...

    The atmospheric air 32 °C dry bulb temperature and 70% relative humidity supplied to the cooling coil at a rate of 45m3/min. The air cooling to the saturated state and leaving at a temperature of 16 °C. Determine: a- Specific humidity at each state. b- Wet bulb and dew point temperatures at the final state c- Final relative humidity. d- Mass of water condensed. e- Rate of heat removed from the air in kW. f- Show the process on Psychrometric...

  • (10 pts) Six-thousand cubic feet per minutes (C.F.M.) of atmospheric air at 28°C (dry bulb) having...

    (10 pts) Six-thousand cubic feet per minutes (C.F.M.) of atmospheric air at 28°C (dry bulb) having a wet bulb temperature of 23°C is to be cooled in an air conditioning system. The air conditioning system lowers the dry bulb temperature of the air to 20° C. Cooling with dehumidification is accomplished using chilled water loop. The chilled water enters the loop at 5°C at a rate of 280 kg/min and experience a 5°C temperature increase. The atmospheric pressure is 1...

  • a. Calculate the dry air and water vapor mass flow rates (lb/min) if the volume flow...

    a. Calculate the dry air and water vapor mass flow rates (lb/min) if the volume flow rate is 1,000 cfm, the humidity ratio is 0.025 lbv/lba, and the dry air density is 0.072 Iba/ft3. b. Assume the above air enters an evaporator coil at 90°F where it is cooled in a constant humidity ratio process until reaching the 100 % RH curve ( the temperature at that point is the dew point. The air then keeps dropping in temperature, following...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT