Sensible and Latent
The sensible and latent air to air heat exchanger is an HVAC component for exhaust heat recovery. It can be used to transfer sensible energy, latent energy or both between the supply and exhaust air streams. The performance is specified by its sensible or latent effectiveness at 75% and 100% of the nominal supply air flow rate at two operating conditions (consistent with ARI Standard 1060-2001) as shown in the following table.
Table 1. Operating conditions for Sensible and Latent Heat Exchanger
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Parameter
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Conditions
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Heating
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Cooling
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Entering supply air temperature:
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Dry Bulb
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35°F (1.7°C)
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95°F (35°C)
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Wet Bulb
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33°F (0.6°C)
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78°F (26°C)
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Entering exhaust air temperature:
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Dry Bulb
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70°F (21°C)
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75°F (24°C)
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Wet Bulb
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58°F (14°C)
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63°F (17°C)
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