Episodes
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WHY SQUARE FOOTAGE ≠ TONNAGE - Short #276
Square footage is no longer a reliable measure for determining HVAC tonnage in modern homes.
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EPRs and Rack Refrigeration w/ Matthew Taylor
EPRs are essential in supermarkets to maintain optimal temperature across multiple evaporators sharing a compressor.
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Combustion vs. Compression - Short #275
Heat pumps have evolved, providing higher efficiency and safety benefits compared to older models.
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HVAC In the Northeast w/ Leo & Paul Sharkey
Engineers transitioning to HVAC can leverage their analytical skills for better systems integration and efficiency.
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Superheat in Heat Mode: Why Heat Pumps Get Weird - Short #274
Superheat is essential for the effective operation of heat pumps, particularly in heat mode.
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What We Learned From NCI Duct / Balancing Training
Understanding duct system design requires moving away from guesswork to calculated decisions using CFM ratings and static pressure management.
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HVAC Systems for Architects: Making Sense of the Alphabet Soup - Short #273
HVAC systems can be categorized into three main types: air-to-air, water-source, and air-water hybrid.
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Sizing Breakers and Conductors (for HVAC) – Have Things Changed?
MCA stands for Minimum Circuit Ampacity, which is used to size wire, while MOCP refers to Maximum Overcurrent Protector, used to size breakers.
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Absorption Cooling - The Rise and Fall and Rise - Short #272
Absorption cooling technology historically relied on heat instead of electricity and was widespread before the rise of electric solutions.
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Combustion Analysis w/ Tony G.
Combustion analysis is crucial for safety, efficiency, and liability protection when servicing HVAC systems.
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Give Until it Hertz - The Battle Over Frequency - Short #271
The frequency war between 60 Hz and 50 Hz had significant historical implications for electrical engineering and infrastructure.
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Residential vs. Commercial HVAC Sales
Sales in HVAC is essential for bridging the gap between the technical work and customer needs.
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When Ammonia Ruled the World - Short #270
Ammonia was the dominant refrigerant in the 19th century due to its cost-effectiveness and heat absorption capabilities.
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Humidity, Airflow, and Refrigeration
Humidity control is vital in refrigeration settings to avoid product spoilage and operational hazards.
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The Finned-Tube Coil - Short #269
The finned-tube coil is essential for maximizing heat transfer efficiency in HVAC systems.
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Are Two Are Better Than One: Understanding Tandem Compressors
Tandem and trio compressors offer significant energy savings and simplification in design, ideal for various commercial applications.
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The Tech That Tried to Beat the Compressor - Short #268
Thermoelectric cooling, based on the Peltier effect, allows for cooling without moving parts or refrigerants.
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VRF, Ductless and Humidity Control w/ Roman
In humid climates, undersizing VRF and ductless systems often leads to better humidity management.
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The History of the Thermostat - Short #267
The thermostat has been pivotal in shaping comfort and energy use, evolving from manual control to smart technology.
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Tech Support Highs and Woes w/ Roman
Access to service manuals is crucial in today’s complex HVAC landscape, and manufacturers must make them easily accessible.
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