146 lines
3.4 KiB
Markdown
146 lines
3.4 KiB
Markdown
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footer:  *2025 Symposium*
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# Are Chillers the Future
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2025 Symposium
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---
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[.footer:]
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---
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[.footer:]
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# Reasons
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**Change to flammable refrigerants in the future.**[^1]
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[^1]: Projected to change refrigerants again in the next 10-15 years.
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---
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[.footer:]
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### It's not just because I like the art of piping systems
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<br/>
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---
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[.footer:]
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---
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[.footer:]
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---
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[.text: #ffffff, .text-scale(0.8)]
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# History
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- Dates back to Romans
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- 19<sup>th</sup> century, broader adoption due to cast iron radiators and steam boilers
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- 20<sup>th</sup> century, introduction of pumps, energy efficiency, zone controls
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- Popular choice for contemporary HVAC Systems
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---
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# Definitions
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---
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[.footer:]
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---
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# Define Chillers
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Chillers are mechanical devices used in heating, ventilation, and air conditioning (HVAC) systems
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to remove heat from a liquid via a vapor-compression or absorption refrigeration cycle.
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---
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# Applications in HVAC
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1. **Commercial Buildings:**
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- Chillers are commonly found in shopping malls, office buildings, and hospitals, where they are used to cool large open spaces and maintain comfortable indoor temperatures.
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1. **Industrial Processes:**
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- Chillers are used to cool machinery and products, particularly in manufacturing processes that generate substantial amounts of heat.
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1. **Air Conditioning Systems:**
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- In large HVAC systems, chillers provide chilled water, which is then utilized by air handling units (AHUs) or fan coil units to cool air before it is distributed throughout the building.
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1. **District Cooling:**
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- Chillers are sometimes used in district cooling systems, where a central chiller plant provides chilled water to multiple buildings in a defined area.
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^ Note how residential does not appear on the list.
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---
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# What do we do?
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^ Ask the audience to answer.
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---
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# What do we do?
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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...
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- Water _IS_ a refrigerant (R-718).
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^ Second one is important to remember for later in the talk.
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---
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# Fun Facts
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| | Density | Specific Heat |
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| --------- | ------------------------- | ------------------------------ |
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| Air<sup>1</sup> | 0.075<sup>lb/ft<sup>3</sup></sup> | 0.24<sup>btu/lb</sup> |
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| Water<sup>2</sup> | 62.37<sup>lb/ft<sup>3</sup></sup> | 1.0<sup>btu/lb</sup> |
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<sup>1</sup>Air density calculated for sea-level @ 70°.
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<sup>2</sup>Water density calculated @ 60°.
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`https://hvacrschool.com/sensible-heat-in-air-and-water`
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---
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# Fun Facts
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_Source: **Modern Hydronic Heating**, by: John Siegenthaler, P.E._
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^ Add to pros list.
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---
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# A Home is Complex
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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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#### _A home requires harmony between many different mechanical systems._
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---
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[.footer-style: #696969, alignment(center)]
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[.footer: _From: 'What if Houses Came with Manuals' by **Sam Meyers** and **Genry Garcia**_]
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---
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