Chapter 6, Problem 6.1P

Tdb refers to .2 the moist air temperature. O none of the above. O the wet air temperature. O the most common air temperature. C

The outside design temperatures in the summerin Tucson, Arizona, for 25% of the time are ______F dry-bulb and______F wet-bulb.

Explain what a "heated zone" is, how it operates, and any potential restrictions.

Example design a winter air conditioning power plant for a neighborhood of your choice (preheater/final heater andMust be humidification cells). Audible heat loss of the neighborhood is 50 kW, hidden heat gain is 20 kWhave been calculated. 1-) Show the process in the psychrometric diagram. 2-) Calculate the total amount of air circulating in the system 3-) Calculate the amount of water sprayed into the air in the humidifier 4-) Calculate the preheater capacity. 5-) Calculate final heater capacity

4. A grain drier requires 12,000 cu ft per min of 115°F air. The atmos- pheric air is at 75°F and 68 per cent relative humidity. How many British thermal units per hour are required to heat the air?

On a cold winter day, you turn up the thermostat in your house. Assume that your house is well sealed and that no air enters or leaves the house. When the air temperature in your house rises a short while later, what statement is correct regarding the air pressure? Question 10 options:   The air pressure does not change at the higher temperature.   The air pressure increases at first but then decreases again as the temperature approaches its higher value.   The air pressure is lower at the higher temperature.   The air pressure decreases at first but then increases again as the temperature approaches its lower value.   The air pressure is higher at the higher temperature.

Solar concentrators are used to power a small village. Which one of these below is not important to generate the enough amount of power?         To find the maximum power, we can use the condenser and turbine inlet temperatures as reference.       Nusselt number depends whether it is cooling or heating turbulent flow problem       None of the given       First law of thermodynamics is one of the important steps to solve the problem       The thermal and velocity entry length can be found using Reynolds number and the diameter of the pipeline       Pipeline should be place at an appropriate distance from the concentrators and we can approach the problem as steady flow problem

Choose the correct answer. Air temperature affects the rate of evaporation because: Temperatures provide heat required for evaporation Temperature controls latent heat of vaporisation Temperature influences the vapour pressure deficit.

BOOK -  Heating Ventilating and Air-Conditioning Analysis and Design