DOAS vs MUA
DOAS vs MUA
(OP)
Hi everyone,
I'd like to hear your ideas and thoughts about the differences between DOAS and MUA's, and when each should be used.
It's clear to me that a DOAS generally supplies oudoor air to AHU's, fan coils, VRF evaporators, heat pumps, etc. In turn, a DOAS helps to cool, dehumidify the outdoor air, and in this way the indoor equipment requires less sensible and/or latent capacity.
But what about the MUA's? Are they still just a support system? can they heat a space completely with outdoor air alone? Do they contribute to the pressurization of spaces?
I look forward to your comments and ideas. Thanks.
I'd like to hear your ideas and thoughts about the differences between DOAS and MUA's, and when each should be used.
It's clear to me that a DOAS generally supplies oudoor air to AHU's, fan coils, VRF evaporators, heat pumps, etc. In turn, a DOAS helps to cool, dehumidify the outdoor air, and in this way the indoor equipment requires less sensible and/or latent capacity.
But what about the MUA's? Are they still just a support system? can they heat a space completely with outdoor air alone? Do they contribute to the pressurization of spaces?
I look forward to your comments and ideas. Thanks.
Talk To Other Members
RE: DOAS vs MUA
where I live most people who say MUA mean a unit that filters and heats air to discharge into a garage. But they also come with cooling option, so really, they are DOAS.... A regular AHU also can be a DOAS. You just have to design it for the conditions.
RE: DOAS vs MUA