The following data relate to a conference room for seating 80 persons.22°C DB, 55% RH38°C DB, 28°C WB75 W and 45 W, respectively12,000 W12,000 WInside Design ConditionsOutside Design ConditionsSensible and latent heat loads per personLights and fans loadSensible heat gain through glass, wall, ceiling,etc.Air infiltrationFresh air supplyBy-pass factor of the coils18 m³/min80 m³/min0.1If two-thirds of recirculated room air and one-third of fresh air are mixed before entering the cooling coils, determine the apparatus dewpoint temperature.

Solution: Given Data: n = 80. To Find: Apparatus dew point temperature?

The following data relate to a conference room for seating 80 persons. Inside Design Conditions 22°C DB, 55% RH Outside Design Conditions 38°C DB, 28°C WB Sensible and latent heat loads per person 75 W and 45 W, respectively Lights and fans load 12,000 W Sensible heat gain through glass, wall, ceiling, etc. Air infiltration Fresh air supply By-pass factor of the coils 12,000 W 18 m³/min 80 m³/min 0.1 If two-thirds of recirculated room air and one-third of fresh air are mixed before entering the cooling coils, determine the apparatus dew point temperature.

The following data relate to a conference room for seating 80 persons. Inside Design Conditions 22°C DB, 55% RH Outside Design Conditions 38°C DB, 28°C WB Sensible and latent heat loads per person 75 W and 45 W, respectively Lights and fans load 12,000 W Sensible heat gain through glass, wall, ceiling, etc. Air infiltration Fresh air supply By-pass factor of the coils 12,000 W 18 m³/min 80 m³/min 0.1 If two-thirds of recirculated room air and one-third of fresh air are mixed before entering the cooling coils, determine the apparatus dew point temperature.

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter42: Heat Gains And Heat Losses In Structures

Section: Chapter Questions

Problem 9RQ: If an air-conditioning system was being designed for usein Nogales, Arizona, what temperature...

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A summer air-conditioning shown below is required to maintain a certain room at specified conditions. The layout of the system is indicated on the next page and the specifications are listed below.System specifications:Required room temperature: 23⁰C, 50% Relative humidityAtmospheric pressure: 101 kPaOutside air conditions: 30⁰C, 80% Relative humidity Sensible heat gain: 5 kWLatent heat gain: 4 kWTemperature rise across fan: 1.5⁰CTemperature of air leaving cooler: 12⁰CTemperature of air entering room: 18⁰CApparatus dew point of cooler: 7⁰C
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