Evgenii Konkin (@evgeniikonkin)

Apparatus Dew Point: Why the Coil Temperature — Not the Room Temperature — Controls Humidity.

Tags: HVAC, Mechanical Engineering, Dehumidification, Building Science A thermostat reads 72F. The system is working. But the room feels clammy, the air is heavy, and the humidity meter shows 68 perc

2d ago · 5 min readcalcengineer.hashnode.dev

You Measured One Phase and Multiplied by Three. The Actual Power Was 40% Different.

Tags: Electrical Engineering, Power Measurement, Energy, Industrial A maintenance technician needed to know how much power a 50 HP air compressor was drawing. He clamped his meter on one phase conduc

4d ago · 4 min readcalcengineer.hashnode.dev

Equal Friction Sized the Duct Perfectly. The Noise Made the Space Unusable.

Tags: HVAC, Mechanical Engineering, Ductwork, Building Systems An architect designed a high-end law firm office with 9-foot ceilings and minimal bulkheads. The mechanical engineer used the equal fric

6d ago · 4 min readcalcengineer.hashnode.dev

The Restaurant Door You Cannot Open and the Kitchen Hood That Does Not Capture Smoke. Both Are the Same CFM Problem.

Tags: HVAC, Mechanical Engineering, Ventilation, Building Systems A restaurant owner calls about two complaints. First, customers say the front door is hard to open. Second, cooking smoke drifts into

1Oct 24 · 4 min readcalcengineer.hashnode.dev

The Building Was Running the Compressor When the Outdoor Air Could Have Cooled It for Free.

Tags: HVAC, Mechanical Engineering, Energy Efficiency, Building Systems A 50,000 square foot office building in Charlotte, NC ran its chillers year-round. In December, with outdoor temperatures at 45

Oct 22 · 4 min readcalcengineer.hashnode.dev

Evgenii Konkin

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Available for

Evgenii Konkin's blogs

Apparatus Dew Point: Why the Coil Temperature — Not the Room Temperature — Controls Humidity.

You Measured One Phase and Multiplied by Three. The Actual Power Was 40% Different.

Equal Friction Sized the Duct Perfectly. The Noise Made the Space Unusable.

The Restaurant Door You Cannot Open and the Kitchen Hood That Does Not Capture Smoke. Both Are the Same CFM Problem.

The Building Was Running the Compressor When the Outdoor Air Could Have Cooled It for Free.

Evgenii Konkin

About

Available for

Evgenii Konkin's blogs

Apparatus Dew Point: Why the Coil Temperature — Not the Room Temperature — Controls Humidity.

You Measured One Phase and Multiplied by Three. The Actual Power Was 40% Different.

Equal Friction Sized the Duct Perfectly. The Noise Made the Space Unusable.

The Restaurant Door You Cannot Open and the Kitchen Hood That Does Not Capture Smoke. Both Are the Same CFM Problem.

The Building Was Running the Compressor When the Outdoor Air Could Have Cooled It for Free.

Evgenii Konkin

About

Available for

Evgenii Konkin's blogs

Apparatus Dew Point: Why the Coil Temperature — Not the Room Temperature — Controls Humidity.

You Measured One Phase and Multiplied by Three. The Actual Power Was 40% Different.

Equal Friction Sized the Duct Perfectly. The Noise Made the Space Unusable.

The Restaurant Door You Cannot Open and the Kitchen Hood That Does Not Capture Smoke. Both Are the Same CFM Problem.

The Building Was Running the Compressor When the Outdoor Air Could Have Cooled It for Free.

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Evgenii Konkin

About

Available for

Evgenii Konkin's blogs

Apparatus Dew Point: Why the Coil Temperature — Not the Room Temperature — Controls Humidity.

You Measured One Phase and Multiplied by Three. The Actual Power Was 40% Different.

Equal Friction Sized the Duct Perfectly. The Noise Made the Space Unusable.

The Restaurant Door You Cannot Open and the Kitchen Hood That Does Not Capture Smoke. Both Are the Same CFM Problem.

The Building Was Running the Compressor When the Outdoor Air Could Have Cooled It for Free.