RIT Campus Improvements

RIT Campus Improvements

Joe CooperDan Crossen

Diego GuineaAlex Peterson

Mike Walsh

Ritter Arena Improvements

Joe CooperDan Crossen

Diego GuineaAlex Peterson

Mike Walsh

"The mission statement of this project is to develop several solutions to improve the campus at the Rochester Institute of Technology.

Mission Statement

We were charged with reducing the carbon footprint of RIT’s hockey arena.

However, our project is slightly different than most other projects.

We were given resources, but not a pre-determined project

Common Theme:◦ “It would be nice if you could…”

Project Summary

1. Reclaiming waste heat from the Hockey Arena Pumps.

2. Using waste cooling to pre-treat air for air conditioning.

3. Using the ice pile outside the hockey arena to pre-treat air for Air Conditioning.

4. Using the ice pile outside the hockey arena to cool pipes in the pump coolant loop.

5. Reducing the overall emissions of the hockey arena.

Our Projects

RIT Campus Improvements Wasted water usage Objective Tree

Our mission is to modify and/or add to the current ice rink.

Use the chilled water (@32°F) and the warm

water (@65-90°F) to cool/heat another system in order to

recover any lost energy

Cost Objectives

User Objectives

Design Objectives

Operational Objectives

Remove cost of heating/cooling water

Reduce energy usage in both systems

Use waste heat/cold in another system

Reduce energy usage / energy waste

Modifications must be sustainable (green)

Low carbon footprint

Aesthetically pleasing

Maintain effective running conditions

Low maintenance

Sustainable low day-to-day energy usage

Recover lost energy

Can be integrated into current system

Keep cost of modifications less than money saved

Some type of heat exchanger

Customer Feedback-Enid CardinalLower cost of heating/cooling ……………….……..…………………………. ① ② ③ ④ ⑤

Cost of modifications less than money saved ………………………….. ① ② ③ ④ ⑤

Modifications must be sustainable (green) ……………….………….…. ① ② ③ ④ ⑤

Aesthetically pleasing ………………………………….…………………….…….. ① ② ③ ④ ⑤

Safe for human operation ……………………………………………………….. ① ② ③ ④ ⑤

Can be integrated into current system …………………..……………….. ① ② ③ ④ ⑤

Maintain effective running conditions ……………………………..……… ① ② ③ ④ ⑤

Low maintenance ………………………….…………………………….………….. ① ② ③ ④ ⑤

Concrete

Underslab

Ice Surface

Cooling Tower

Heat out from Pumps

Heat Exhaust

14°F 10°F

32°F 36°F

50°F 60-90°F

Current System

Semi-warm water leaving pumps/entering cooling towers at 65-90° F and leaving cooling towers/entering pumps (for cooling) at 45-55°F

Cold water leaving pumps/entering underslab (for warming of ground)at 36° F and leaving underslab/entering pumps at 32°F

Currently, these two systems do not interact, other than through the pumps. However, the semi-warm water is only used to cool the pumps, and does not come into contact with the cold water at all.

Concrete

Underslab

Ice Surface

Cooling Tower

Heat out from Pumps

Heat Exhaust

14°F 10°F

32°F 36°F

50°F 60-90°F

Current System (cont’d)

RIT pays to cool down this water from 65°-90°F to 45°-55°F while…

…in the next room, we pay to heat up this water from 32° to 36°F

They are on two separate loops, never coming into contact, and energy is wasted moving their temperatures in opposite directions.

Concrete

Underslab

Ice Surface

Cooling Tower

Heat out from Pumps

Heat Exhaust

Heat exchanger

System Overview: Using Waste Heat for Heating

Take the output of this system (65-90°F)

And take the output of this system (32 °F)

And put them through a heat exchanger to utilize the waste heat/cold from one system to heat/cool the other system

Waste Cooling for Air Conditioning

Concrete

Underslab

Ice Surface

Cooling Tower

Heat out from Pumps

Heat Exhaust

14°F 10°F

32°F 36°F

50°F 60-90°F

System Overview: Using Cooling for Air Conditioning

Currently, there is an ice pile outside of the Ritter Arena made from the zamboni’s resurfacing of the ice rink.

Our customer would like to use the ice for cooling of some system in the ice rink.

The customer referred to it as “The Most Expensive Ice in the World”, unless we were to use it to make one of these…

The Ice Pile: Projects 3 & 4

RIT Campus Improvements Ice Pile Objective Tree

Our mission is to modify and/or add systems to lower

energy consumption by utilizing a “free” source (Zamboni ice

pile for cooling purposes)

Cost Objectives

User Objectives

Design Objectives

Operational Objectives

Safe for human operation

Easy/intuitive use

Durable

Can be integrated into existing a/c system

Day-time use, night-time stand –by, year round

Professional/clean appearance

Provide efficient a/c

Hold full ice load from Zamboni

Easily integrated into current ice-rink process

Store excess loads of ice for later use

Easy access for filling

Low/zero maintenance (10 years)

Low prototyping cost of scaled design (MSD)

Lower overall energy usage than current system

1-year pay back of purchase price (cost effective)

Easy removal of water from melted ice

5- Lower Energy Usage than Current a/c. 5- 10 year maintenance interval 5- Safe for operation 5- Easily integrated 5- Professional appearance 4- Low prototyping cost 4- Intuitive use 3- Easy Filling 2- 1-year payback 2- Large ice capacity

Customer Priority Evaluation

Rank

(1-

5)

The customer added this constraint :The zamboni cannot travel off of the loading dock or turn outdoors.

System Overview: Ice Pile for A/C

System Overview: Using the Ice pile for pipe cooling

Integrates with current cooling tower system

Low downtime when being integrated Use at the same time with the cooling tower

system

Ice Pile for Pipe Cooling (continued)

Zambonis, powered by gasoline, diesel, or propane, are the second major source of emissions in hockey arenas after CO2 emissions from the crowd

Ritter Ice Arena is equipped with four air handlers- three to ventilate the arena and one to dry the air

Currently, only CO2 is monitored, and the building is kept positively pressured to keep down levels of other emissions

System Overview: Reducing Emissions of the Ice Arena

Currently, CO2 levels are measured on one of the four air handlers in the arena

CO2 levels can get very high during games due to the number of spectators if ventilation is not increased

In the past, before installation of computer controls, the Zamboni driver could flick a switch where the vehicles are parked to increase the ventilation while running

Current Emissions Monitoring

Objective TreeRIT Campus Improvements Emissions Monitoring Objective Tree

Our mission is to monitor the level of emissions inside the ice rink and decrease the concentration if it

becomes too high

Cost Objectives

User Objectives

Design Objectives

Operational Objectives

Cost effectively measure NO2 and CO levels

5 year payback time

Decrease emissions levels inside arena, independent of Zamboni driver

Increase ventilation automatically if emissions level becomes too high

Log emissions data at regular intervals automatically

Monitoring system works with existing 3 year old control system

Attach to current air handlers and little downtime during installation

10+ year design lifespan

Reduce ventilation costs

Monitor and log hardware health

Reliable- must run year round

Equip with manual override

System Overview Emissions Monitoring

NO2 Level

CO2 Level

CO Level

Air Temperature

Fan Speed

Emissions Log File

Parameter File

Fan Health

Sensor Health Check Hardware

Availability

Read all sensors

Load log and parameter files

Write data and check against appropriate

range

Output results and warnings

Make adjustments if needed

Check if adjustments

happened

Hardware log Health

Hardware log Health

Emissions Log File

Fan Speed

INPUTS OUTPUTS

Questions?Questions?