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+++ b/Presentation.md
@@ -4,15 +4,33 @@ slidenumbers: false
build-lists: false
theme: MacbookPro_Symposium.1
-# Are Chillers the Future
+## Are Chillers the Future
-2025 Symposium
+### in Residential
---
[.footer:]
+^ Hello, I'm Michael Housh a contractor from the Cincinnati, Ohio area. Today
+we're here to talk about the viability of chillers in the residential market.
+This is a topic that I've been thinking about for the past 7 years. Disclaimer:
+All these are my thoughts and opinions, I do not have an inside scoop, I do not
+have a relationship with any manufacturer or distributor, I am just a dude from
+Ohio.
+
+---
+[.footer:]
+
+### It's not just because I like the art of piping systems
+
+
+
+
+^ There's one primary reason that I believe that chillers are going to be the
+future in residential, can anyone guess that reason?
+
---
[.footer:]
@@ -24,29 +42,35 @@ theme: MacbookPro_Symposium.1
[^1]: Projected to change refrigerants again in the next 10-15 years.
----
-[.footer:]
-
-### It's not just because I like the art of piping systems
-
-
-
+^ This is just based on rumor, so timeline may vary.
---
[.footer:]
+^ The goal of this talk is to introduce you to the concepts of chillers in
+general and to start to think through the pros and cons of such systems in the
+residential market here in the US.
+
---
### `https://app.mhoush.com`
+^ I created a web app for this talk for you to document _YOUR_ pros and cons
+throughout the talk, and hopefully we have time at the end to pick a few at
+random to discuss.
+
---
[.footer:]
+^ Like any person who's never given a presentation before, I decided to ask
+Chat-GPT some questions. (move quickly through these next few slides).
+We'll start with the history of hydronic systems.
+
---
[.text: #ffffff, .text-scale(0.8)]
@@ -58,15 +82,16 @@ theme: MacbookPro_Symposium.1
- 20th century, introduction of pumps, energy efficiency, zone controls
- Popular choice for contemporary HVAC Systems
----
-
-# Definitions
+ ^ I find it interesting that hydronic systems / heating in general dates back to the Romans.
---
+
[.footer:]
+^ Next, I asked Chat-GPT to define what a chiller is and how they're used.
+
---
# Define Chillers
@@ -93,14 +118,19 @@ to remove heat from a liquid via a vapor-compression or absorption refrigeration
# What do we do?
-^ Ask the audience to answer.
+^ Next, let's define what we do as HVAC technicians, designers, installers? Ask the audience to answer.
---
# What do we do?
-- Provide healthy, safe, and comfortable environment.
-- We move heat from one place to another, generally through refrigerant and air circulation...
+**Provide healthy, safe, and comfortable environment.**
+
+---
+
+# What do we do?
+
+- **_We move heat from one place to another, generally through refrigerant and air circulation._**
- Water _IS_ a refrigerant (R-718).
^ Second one is important to remember for later in the talk.
@@ -119,7 +149,8 @@ to remove heat from a liquid via a vapor-compression or absorption refrigeration
`https://hvacrschool.com/sensible-heat-in-air-and-water`
-^ Can anyone tell me why this matters?
+^ As a fun fact, I stole this from an article I wrote for HVAC School named sensible-heat-in-air-and-water.
+Can anyone tell me why this matters?
---
@@ -129,7 +160,7 @@ to remove heat from a liquid via a vapor-compression or absorption refrigeration
_Source: **Modern Hydronic Heating**, by: John Siegenthaler, P.E._
-^ Add to pros list.
+^ Add to pros list (hint)?
---
# A Home is Complex
@@ -141,7 +172,11 @@ _Source: **Modern Hydronic Heating**, by: John Siegenthaler, P.E._
- HVAC
- and more...
-#### _A home requires harmony between many different mechanical systems._
+**_A home requires harmony between many different mechanical systems._**
+
+^ (move quickly through these). I think it's important to note that a house is a
+complex thing, made up of a bunch of sub-systems that all need to be in harmony
+with each other.
---
[.footer-style: #696969, alignment(center)]
@@ -150,11 +185,17 @@ _Source: **Modern Hydronic Heating**, by: John Siegenthaler, P.E._
+^ This image shows some of the different sub-systems of a house. I stole this
+from 'What if houses came with manuals' by Sam and Genry, but I created the
+original image, so it was fair game to steal ;)
+
---
[.footer:]
+^ HVAC itself is also a complex beast.
+
---
# HVAC Key Characteristics
@@ -170,6 +211,9 @@ A well-designed HVAC (Heating, Ventilation, and Air Conditioning) system provide
4. **Zoning Control**:
- Allows for the creation of different temperature zones in larger buildings, enabling tailored comfort levels in different areas.
+^ (move quickly). For me comfort and IAQ are the biggest ones I care about in this
+list. I feel energy efficiency is a side effect.
+
---
# HVAC Key Characteristics
@@ -183,6 +227,8 @@ A well-designed HVAC (Heating, Ventilation, and Air Conditioning) system provide
8. **Scalability**:
- Can be designed to accommodate future expansion or changes in usage, making it flexible for evolving needs.
+ ^ These are all really important aspects of an HVAC system.
+
---
# HVAC Key Characteristics
@@ -196,17 +242,23 @@ A well-designed HVAC (Heating, Ventilation, and Air Conditioning) system provide
12. **Environmental Responsibility**:
- Utilizes eco-friendly refrigerants and practices to minimize environmental impact.
-_A well-designed HVAC system is essential for providing a comfortable, healthy, and efficient indoor environment._
+#### A well-designed HVAC system is essential for providing a comfortable, healthy, and efficient indoor environment.
---
+^ Let's look at a well designed conventional HVAC system. It incorporates all
+the things listed in the previous slides.
+
---
[.footer:]
+^ So, what are some key differences between a conventional HVAC system and one
+that utilizes a chiller?
+
---
# Key Differences
@@ -225,6 +277,9 @@ _A well-designed HVAC system is essential for providing a comfortable, healthy,
- Many chiller systems are water-cooled, which can be more efficient than air-cooled systems, particularly in larger settings. Water has a higher thermal capacity than air, leading to more effective heat exchange.
#### _Chiller systems offer several advantages over traditional HVAC systems._
+
+^ (move quickly).
+
---
# Key Differences
@@ -241,3 +296,142 @@ _A well-designed HVAC system is essential for providing a comfortable, healthy,
- Chiller systems are generally robust and, if properly maintained, can have a longer lifespan than traditional HVAC units. Their design often allows for easier maintenance and repair.
10. **Advanced Control Systems**:
- Chiller systems often incorporate advanced building management systems, enabling better monitoring, automation, and integration with other building systems for improved overall performance.
+
+^ (move quickly). Not sure I agree with space saving and we'll see why in some
+future slides. Longevity seems interesting. Once again these are all sort of
+geared / speak towards commercial buildings.
+
+---
+
+
+^ (begin the meat & potatoes of the presentation). Now let's begin to discuss the super-powers that chillers can
+unlock in the residential market.
+
+---
+
+
+
+^ Here's an image of an air -> water heat recovery chiller. It should be noted
+that through this talk when I say chiller, I'm generally referring to a heat
+recovery chiller, which is a specialized sub-set that can do simultaneous
+heating and cooling. These are hard to find in small tonnage chillers, but
+hopefully that changes if more major manufacturer's come around to this idea.
+(Major manufacturer representation is one of the cons). Note: I like to call
+the equipment that provides the hot or chilled water as the "plant".
+
+---
+
+
+
+^ Let's look at some of the internal components. I like to call these internal
+components the "infrastructure". These components should generally have a
+significantly longer life expectancy than the "plant" may have. Also note that
+buffer tanks come in a variety of different sizes depending on the application.
+
+---
+
+
+
+^ The AHU's are similar to traditional ones, however in place of where electric
+heat strips would be, it's replaced with a hot water coil. This opens up the
+door for reheat dehumidification as a standard option. Note that I believe that
+air circulation is still an important part, although these systems do allow for
+radiant heating / cooling, I personally believe that moving air is generally the
+best choice. I also think that one of the downsides of conventional inverter
+systems (which I love don't get me wrong) are that we don't move enough air in a
+home, but that's a topic for another day / talk. ;)
+
+---
+
+
+
+^ Do you like ductless style AHU's, well they've got those too for hydronic
+systems.
+
+---
+
+
+
+^ These systems are still highly capable of dual fuel applications.
+
+---
+
+
+
+^ In fact, they are highly extensible / scalable to incorporate many different
+"plants". This shows a wood boiler that can also be incorporated to generate
+heat that the "infrastructure" could then utilize.
+
+---
+
+
+
+^ Are you in a climate that has significantly higher heating loads? Or an
+application where redundancy is important? Incorporate several units (only
+showing 2) to increase the capacity and have "fail over".
+
+---
+
+## Other Capabilities
+
+- Control the water temperature based on outdoor conditions.
+
+- Use off-peak rates to store water in buffer tanks (may dictate buffer tank
+ sizing).
+
+- Dump heat into a pool / spa.
+
+
+
+---
+
+## Other Capabilities
+
+- Low latent load?
+- Target supply temperature during reheat.
+- Utilize current controls that are designed for boilers.
+
+
+
+---
+[.text: #ffffff, text-scale(0.8)]
+
+# Cons
+
+- Higher upfront costs.
+
+- More in-depth design requirements (maybe a pro as well).
+ 1. Distribution systems need designed to handle low water temps.
+ 1. Not a drop in replacement for existing boiler systems.
+
+- Challenge where pex / copper lines can't be ran.
+
+---
+
+# Cons
+
+- Lack of major brands.
+ 1. Chilltrix
+ 1. Daikin
+ 1. LG
+ 1. Multi-Aqua (only heat recovery option I know of, but only 5-Tons)
+ 1. Spacepak
+ 1. Taco (integrated buffer tank / DHW)
+ 1. Viessman (now owned by Carrier).
+
+---
+
+# Your Pros vs. Cons
+
+^ Pull random list of pros vs. cons that the audience has created to highlight a
+few.
+
+---
+
+# Thank You!
+
+- Send me a screenshot of your pros vs. cons
+- Let me know your thoughts.
+
+
+**dontbeapuppy@mhoush.com**
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