In an attempt to conserve water and to be awarded LEED (Leadership in Energy and Environmental  Design) certification, a 20,000-liter cistern has been installed during construction of a new building.  The cistern collects water from an HVAC (heating, ventilation, and air-conditioning) system designed  to provide 2830 cubic meters of air per minute at 22°C and 50% relative humidity after converting it  from ambient conditions (31°C, 70% relative humidity). The collected condensate serves as the source  of water for lawn maintenance. Estimate (a) the rate of intake of air at ambient conditions in cubic feet  per minute and (b) the hours of operation required to fill the cistern.

Q: Within an air-handling system, a stream of air at T=30°C and 91=40% relative humidity is being mixed…

A:

Q: Moist air at 30oC and 50% relative humidity is cooled to 10oC. If the air has a volumetric flow rate…

A: Given:Moist air inlet condition, Tdb,1=30oC, ϕ1=50%Final temperature of the air, Tdb,2=10oCThe…

Q: Air with a total pressure of 101.3 kPa, a temperature of 12 °C and a relative humidity of 75% is…

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Q: 8. Consider two rooms that are identical except that one is maintained at 25°C and 40 percent…

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Q: An air-conditioning system operates at a total pressure of 1 atm and section and a humidifier that…

A: rite the

Q: The process of oxidizing air in a humidifier, air at a dry bulb temperature of 25 degrees Celsius…

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Q: Would entering a room which contains air that is 80% nitrogen, 15% oxygen and 5% carbon dioxide…

A: Conecpt:- Ventilation rate depends on wind pressure and stack effect.

Q: within an air-handling system, a stream of air at T=30°C and 91=40% relative humidity is being mixed…

A:

Q: 42 On a particular day, the ambient air was found to have a dry bulb temperature of 30°C and a wet…

A: Solution-Dry bulb temperature Tdbt=30oCWet bulb temperature Twbt=20oCBarometric pressure…

Q: Calculate (a) specific volume, (b) ethhalpy, and (c) general humidity at 50 ° C and relative…

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Q: What is the relative humidity when the dry-bulb temperature is 16 % and the wet-bulb temperature is…

A: Given data  Dry bulb temperature = 16°C Wet bulb temperature = 14°C We have to find relative…

Q: Problem 2: An air-conditioning system operates at a total pressure of 1 atm and consists of a…

A: Given:The heating section and humidifier are shown below;The temperature of the air at the inlet to…

Q: Using a psychrometric diagram, describe the heating and humidification process from the following…

A: Initial condition of air, =40oC dry bulb and 60% RH Final condition of air, =90oC  dry bulb and 25%…

Q: Explain why the HVAC systems, new roof, interior renovation costs, additional plumbing, and restroom…

A:

Q: NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to…

A:

Q: Why do we need to control the temperature and humidity in the aircraft hangar? How does it affect…

A: A hangar is a closed building structure to hold aircraft or spacecraft. Hangars are built of metal,…

Q: uring wintertime, the temperature of 22°C Pa pressure. Perform this stage. Will m

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Q: Given the same temperature, if we reduce the water vapor content of the air sample in the previous…

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Q: Calculate (a) the specific volume, (b) Enthalpy, and (c) absolute humidity at 40 udaraC and relative…

A: The temperature is: T=40°C=313 K Pressure is: P=740 mm Hg=98.658 kPa The gas constant is: R=0.287…

Q: Within an air-handling system, a stream of air at T=30°C and 91=40% relative humidity is being mixed…

A:

Q: How do you calculate relative humidity (RH) when given actual vapor pressure and water vapor…

A: It is required to express relative humidity

Chemical and Phase Equilibrium

Phase diagrams or equilibrium phase diagrams are the graphical representations that show the phase transformations of the constituting elements with respect to the pressure, temperature, and compositions. The diagrams show the conditions that limit the different phases, namely solid, liquid, and gas. The diagram can also be utilized to verify the relations between the state variables. Most of the phase diagrams are temperature-pressure phase diagrams, with the variable parameter as the composition. Usually other variables such as solubility and pressure parameters are not indicated in the phase diagram. For a one-component system (unary phase diagram), the phase diagram is generally a function of temperature and pressure as the state variables, or temperature and volume. However, for a binary system (two-phase) having two components, the phase diagram is a function of temperature and composition as the state variables only. Coexisting of the different phases of the constituting elements is indicated in the phase diagram. A ternary phase diagram can be characterized by consisting of three phases in equilibrium.