John Song, PE
John Song is a mechanical engineer and project manager at McGuire Engineers with 10 years of experience in the HVAC industry.
Articles
Case study: Pressure-independent control valves will update HVAC system
The Field Museum in Chicago will incorporate pressure-independent control valves to help regulate its chilled water system
Case study: Museum HVAC upgrade requires precision control
The Art Institute of Chicago incorporated pressure-independent control valves to improve energy efficiency
Where and how to specify pressure-independent control valves in hydronics
While commercial hydronic systems are generally reliable and efficient, they can experience a range of issues that can impact performance and lead to increased energy costs and equipment failure
Applied versus packaged rooftop units — does it matter?
The line between applied and packaged rooftop units is sometimes blurred, and ultimately the needs of the project will dictate whether applied or packaged should be recommended and specified based on the wide array of available options
Case study: Theater HVAC issues resolved
A theater’s rooftop units were replaced to aid in dehumidification
Case study: Theater renovation includes VRF
A Chicago college theater renovation opted for heat recovery variable refrigerant flow systems as part of its heating and cooling plan.
Don’t forget the codes
ASHRAE Standards 15 and 34 must be consulted when designing with variable refrigerant flow systems.
Choosing and specifying VRF systems
In your client’s quest for energy efficiency, determining if a variable refrigerant flow system is right requires careful consideration.