Having lived with an ancient heating system and no cooling for years, a
Pennsylvania congregation now sings the praises of the updated
hydronics and new mini-splits that brought a mechanical renaissance
to the church’s various spaces.
An engineer with the 9th-largest school district in the United States writes about the IAQ testing and final report that his district commissioned. From offices to classrooms to cafeterias and restrooms, the monitoring was extensive. Read the results and some author comments about acceptable IAQ in schools, the possibility of overdoing fresh air, and the associated costs.
School districts have known for quite some time that temporary equipment can assist in passing the tests of renovations or the pop quizzes of unexpected equipment failure. The lesser-known lesson is that having the plan in place can save significant time and money on top of the equipment’s basic benefits.
Inside this nonprofit’s new headquarters in Portland, variable refrigerant
flow teamed with zonal heat exchange, 100% DOAS, daylighting, CO2
sensors, and more to deliver comfort while bringing actual energy
usage in under the design target of $0.83 per year.
The wave of acceptance for this design option continues to grow in North
America. Get up to speed on when and where chilled beams can have the
most impact. Then move into humidity control, supply air, system
sizing differences compared to VAV, economizers, and more.
Multiple dehumidification units allowed for scheduled downtime while maintaining this underground spa’s precise humidity requirements.The Grove Park Inn Resort & Spa is nestled in the Blue Ridge Mountains of Asheville,
MEP designers need to re-examine energy wasteful DOAS
practices, which currently contribute to over-ventilation of occupied building space, and refocus on meaningful
decoupling of sensible and latent load control using dynamic outside air
management systems. Read more on the flexibility and possibility of the
author’s proposed solution in data centers, schools, and elsewhere.
Check out Engineered Systems magazine’s October 2019 issue takes a closer look at condensation concerns surrounding the use of chilled beams, examines the energy implications of chilled water plant design and operation, and much more.