96 lines
2.9 KiB
Markdown
96 lines
2.9 KiB
Markdown
# 2025 Symposium - Chiller Talk
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## Introduction : time: 2 minutes
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- Who am I
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- Why I'm here
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- Brief interests
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## Reason for talk : time 3 minutes
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### Refrigerant Changes
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High odds we'll move to flammable refrigerant (10-15 year speculation)
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### Get comfortable
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- Help get comfortable with the idea of using chillers in residential markets.
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- Draw similarities and differences between current equipment.
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### Pros / Cons
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## History : time 5 minutes
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It would be good to explore a little of the history of hydronic systems here maybe just touch on my
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companies history, idk ??
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## Concepts : time 9 minutes
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An introduction to some of the concepts and similarities. Start building a pros / cons list that we
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can go through at the end.
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### What do we do? (audience participation) time: 1-2 minutes
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What's the primary objective of HVAC?
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- Provide healthy, safe, and comfortable environment.
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We move heat from one place to another, generally through refrigerant and air circulation... Water
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_IS_ a refrigerant. (could perhaps nerd out on specific heat, air = 0.24, water = 1.0, refrigerat=??
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[high that's why we use it, gonna depend on the blend])
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- Add specific-heat of water to the pro's list here, maybe also to cons when compared to refrigerant
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??
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### House Complexity : time 1-2 minutes
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A home is made by harmony between many different mechanical and physics driven systems.
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- Shell / envelope
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- Ventilation / exhaust
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- Electrical
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- Plumbing / hot water
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- HVAC
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- and more...
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HVAC covers / is the realm of a lot of these systems.
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### System Complexity : time 5 minutes
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- Show a well designed traditional system here (fresh-air, dehumidification, inverter, etc.).
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- we do not want to get rid of moving air, so these will still apply
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- talk about things like filtration, safety switches, controls / thermostats, inverter boards.
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- We have to design the distribution system.
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- Explore the idea of infrastructure vs. the plant here.
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- The infrastructure piece will likely have a longer life expectancy (pro)
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- More upfront cost design / materials (con)
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- glycol in cold climates
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- piping systems are fun / works of art (pro/con)
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- Inherent mis-trust for things we don't understand / are used to. (big, con?)
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## Chiller / Heat Recovery Concepts : time 15 minutes
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**The meat and potatoes of the talk, most likely**
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- Show cool things that are _unlocked_ with using water.
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- ability to dump heat into other sources, such as pools
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- ability to incorporate different heat sources (dual fuel, pellets, wood, etc.)
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- Introduce the concept of heat-recovery and dhw generation.
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- unlocks dehumidification with a high COP
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- Puts more eggs in one basket (con)
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- can be stacked / redundant (pro)
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- Over sizing less of a problem (buffer tank concepts)
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## Pro's and Cons : time 10 minutes
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Build and go over a pro's and cons list, this has hopefully been built up live with crowd engagement
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through the talk.
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## Questions / Outro : 5 minutes
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