Advantages of using mechanical ventilation (hvac)
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Transcript of Advantages of using mechanical ventilation (hvac)
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Advantages of using mechanical ventilation (HVAC) in Heritage Building
~ Good indoor climate is guaranteedA computer control HVAC system maintains 70° temperature/50% humidity
+- ( 2%)
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Type of Object %RH Degrees in Farenheit
Furniture
45 - 55% 68 - 72°Paintings and Paper
Textiles
Objects
Ideal RH levels and temperature condition for the musuem’s collection
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Three different forms of deterioration caused by humidity:~Dimensional Change
~Chemical Reaction
~Mold growth
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~ Mechanical ventilation with heat recovery maximum energy efficiency of building can be achieved
2014 Visitor Numbers set at Canterbury Museum ~684 000 / 365 = 1873 one day
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Disadvantages of using mechanical ventilation (HVAC) in Heritage Building
~ High initial cost of building and maintaining the system. Cost effectiveness is hard to assess.
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>Monthly operating expenses
>Preventive maintenance
>Repair
>Supplies
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~ Wrong planning of HVAC installation may cause the system to make unwanted noise.
Heritage building was not design with AHU room, System Control room etcTherefore, a well planning is required to prevent noise produced by rotating machinery and air moving devices.
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~ Complicated to retrofit into historically valuable building while complying with heritage restrictions.
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Well planning is required for efficient ventilation