Trouble-Free ERV

Trouble-Free ERVfor over 20 years!

Trouble-Free ERV

What is RenewAire?

An advanced static-plate exchanger

Trouble-Free ERV

What does RenewAire do?

1. Transfers heat by conduction2. Transfers humidity using

hydroscopic resin

Trouble-Free ERV

Proven Technology

The largest selling ERV technology in the world for over 30 years

A leader in the North American market since 1983

10s of thousands of successful installations large and small RenewAire EV450

Trouble-Free ERV

Kuala Lumpur Point Barrow

Trouble-Free ERV

Why is ventilation necessary?Applicable local codesInternational Mechanical Code

• Requires “balanced” exhaust and make-upASHRAE 62 engineering standard for

“Acceptable Indoor Air Quality”Codes requiring energy recovery

• Ohio, Minnesota, CanadaSolve IAQ problems

Trouble-Free ERV

HOURS

05/26/951.8

1.7

1.6

1.5

1.4

1.3

1.2

1.1

1

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0M 1 2 3 4 5 6 7 8 9 10 11 N 1 2 3 4 5 6 7 8 9 10 11 M

PP

M C

O2

(T

HO

US

AN

DS

)

PRESCHOOL FACILITY- Before RenewAire HE450

OSHA800 PPMCO2 LIMIT

ASHRAE-1000 PPM CO2 LIMIT

IAQ - Case Study

Trouble-Free ERV

HOURS

05/28/951.8

1.7

1.6

1.5

1.4

1.3

1.2

1.1

1

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0M 1 2 3 4 5 6 7 8 9 10 11 N 1 2 3 4 5 6 7 8 9 10 11 M

PP

M C

O2

(T

HO

US

AN

DS

)

PRESCHOOL FACILITY- After RenewAire HE450 Installation

OSHA800 PPMCO2 LIMIT

ASHRAE-1000 PPM CO2 LIMIT

IAQ Case Study

TIME CLOCK TURNED OFF - HE450

TIME CLOCK TURNED OFF - HE450

TIME CLOCK TURNED OFF - HE450

TIME CLOCK TURNED OFF - HE450

Trouble-Free ERV

EPA “Tools for Schools”

Ventilation is a critical component

www.epa.gov/iaq

Trouble-Free ERV

Hospitality IAQ

Accommodation of smokers and non-smokers in bars and restaurants

Full time ventilation requirements 24/365 in hotels and motels

High ventilation rates in dedicated smoking areas, casinos and private clubs and lodges

Trouble-Free ERV

IAQ Case Study

Prime Time Sports Bar

Smoke control for patrons and employees

Trouble-Free ERV

Hospitality Industry IAQ

ERV is #1 recommendation

www.pmoptions.com

Trouble-Free ERV

Target MarketSchoolsMedical and veterinary clinicsNursing HomesHospitality facilities that accommodate

smokersFacilities with multiple ventilation

requirements

Trouble-Free ERV

Flushes Out ContaminantsDries Excess MoistureDispels OdorsCAN COST A LOT

But Ventilation with Energy Recovery Minimizes That Cost

CONVENTIONAL VENTILATION

Trouble-Free ERV

ERVs versus HRVsHeat Recovery Ventilators (HRVs) transfer

temperature differential only• Aluminum and plastic plate exchangers and

heat pipes

• Good for high humidity and high temperature applications

• Positive air stream separation

• Not often used for general building ventilation because of low efficiency

Trouble-Free ERV

HRVs Shortcomings?

Complex controls

Seasonal

•Adds humidity to the building in summer

Condensate pan and drain requiredActive defrost required anywhere north of FloridaLow overall efficiency

Temperature exchange only

Lifebreath 700 FD

Trouble-Free ERV

ERVs versus HRVs

Energy Recovery Ventilators (ERVs) transfer temperature and humidity differential• Desiccant wheels and enthalpic plate units• Best in cold climates and hot humid climates• High temperature and humidity transfer

efficiency• Not used for indoor pools etc.

Trouble-Free ERV

How are Wheels Vulnerable?

Complex controls

Cross contamination - purge air requiredParasitic power consumptionHigh (expensive) maintenanceFailure mode impacts HVAC load

•Wheel stops, recovery stops•Failure=100% outside air

Air leakage at seals – Lost Air

Semco FV2000

Trouble-Free ERV

Wheel Leakage Effects

Me

dia

Ro

tati

on

Exhaust Air

Outdoor AirDiameter Seals=Contamination

Circumference Seals= Lost Efficiency

Trouble-Free ERV

Lost Air EffectsSEMCO FV600 Not ARI Certified – SEMCO data

Outdoor Air Fresh Air Supply

Exhaust Air Room Air

PURGE AIR (150 CFM )

Me

dia

Ro

tati

on

450 CFM

Wheel Cross Section

600 CFM

600 CFM

450 CFM

Pressure = 0.00 Exhaust Air Transfer = 0.04% OACF = 1.33

Trouble-Free ERV

ARI-1060-2000

Air-to-Air Energy Recovery Ventilation Equipment Product Certification

Trouble-Free ERV

What is Certified?The energy recovery componentPerformance at “Standard Conditions”

• Winter - OA= 35°Fdb, 33°FwbRA= 70°Fdb, 58°Fwb

• Summer - OA= 95°Fdb, 78°FwbRA= 75°Fdb, 63°Fwb

Airflow, pressure drop, effectiveness, purge air (OACF), and cross contamination (EATR)

Trouble-Free ERV

Lost Air EffectsMicrometl ERV-AA Rated Airflow = 500CFM

Outdoor Air Fresh Air Supply

Exhaust Air Room Air

PURGE AIR (165 CFM )

Me

dia

Ro

tati

on

500 CFM

Wheel Cross Section

665 CFM

665 CFM

500 CFM

Pressure = 0.00 Exhaust Air Transfer = 0.2% OACF = 1.33

Trouble-Free ERV

Lost Air EffectsMicrometl ERV-AA Rated Airflow = 500CFM

Outdoor Air Fresh Air Supply

Exhaust Air Room Air

PURGE AIR (295 CFM )

Me

dia

Ro

tati

on

500 CFM

Wheel Cross Section

795 CFM

795 CFM

500 CFM

Pressure = +0.5 Exhaust Air Transfer = 0.0% OACF = 1.59

Trouble-Free ERV

Lost Air EffectsMicrometl ERV-AA Rated Airflow = 500CFM

Outdoor Air Fresh Air Supply

Exhaust Air Room Air

PURGE AIR (10 CFM )

Me

dia

Ro

tati

on

500 CFM

Wheel Cross Section

510 CFM

510 CFM

500 CFM

Pressure = -0.5 Exhaust Air Transfer = 9.9% OACF = 1.02

Trouble-Free ERV

Wheel Performance - A Delicate Balance

Low Efficiency

Low Cross Contamination High Efficiency

High Cross Contamination

Ventilation System Design

Trouble-Free ERV

Wheel Performance - A Delicate Balance

Low Efficiency

Low Cross Contamination High Efficiency

High Cross Contamination

Ventilation System Design

Trouble-Free ERV

Without Regular, Professional Service

System Failure !

Trouble-Free ERV

“Lost Air” is Significant in Wheels

Small wheels 15-30% purge air and still some exhaust air transfer

Small wheels over 50% purge air to achieve 0.0 exhaust air transfer

Large wheels typically 10-20%

Trouble-Free ERV

Desiccant Degradation

ARI-1060 testing was conducted on a desiccant wheel exchanger from a major US manufacturer

The unit was removed for testing after being used for an equivalent of four years in a residential application

Aged performance was compared to certified data for the product

Trouble-Free ERV

Desiccant Degradation Con’tCross leakage of exhaust air into fresh air

(EATR) increased from 10.0% to 19.5%, an increase of 95%

Sensible exchange efficiency decreased from 75.0% to 70%, a decrease of 7% due to increased leakage

Total exchange efficiency decreased from 70% to 58%, a decrease of 17% due mainly to desiccant degradation

Trouble-Free ERV

ARI Tests Clean Wheels

Close-up of wheel surface

H²O

H²O H²O

H²O

CO²

CO²

CO²

Formaldehyde

Trouble-Free ERV

Dirty Wheels Don’t Expose Desiccant

Close-up of wheel surface

H²O

H²OH²O

H²O

CO²

CO²

CO²

Formaldehyde

Trouble-Free ERV

Wheel Maintenance is Critical

Air-X-Change recommends buying a replacement wheel with each unit to switch out for cleaning

Seal adjustment and replacement

Trueing wheel

Belt or drive adjustment or replacement

Trouble-Free ERV

RenewAire is…

A clear alternative to

the wheel

Trouble-Free ERV

EV450

Positive air stream separation

No condensate or defrost

Simple to maintain

Reliable long term operation

RenewAire Static Plate ERV

Trouble-Free ERV

Certified Performance

Safety and durability - UL

Residential product performance - HVI

Commercial product performance - ARI

Trouble-Free ERV

Lost Air EffectsRenewAire EV450 Rated Airflow = 450 CFM

Outdoor Air

Exhaust Air Fresh Air Supply

450 CFM

Core Cross Section

459 CFM

459 CFM

Room Air

450 CFM

Pressure = 0.0 Exhaust Air Transfer = 0.0% OACF = 1.02

Trouble-Free ERV

Trouble-Free ERV

Trouble-Free ERV

Trouble-Free ERV

Trouble-Free ERV

RenewAire is a Proven Stable Technology To Build your Ventilation Design On!

Low Cross ContaminationHigh Efficiency

Ventilation System Design

Trouble-Free ERV

RenewAire Allows Equipment Downsizing

10 ton AC = 4000 CFM

25% OA = 1000 CFM

Load imposed by OA= Approx. 4 tons

Savings with RenewAire= Approx. 2.5 tons

Can provide same AC capacity with a 7.5 ton AC unit!!

Trouble-Free ERV

Simple Maintenance

Trouble-Free ERV

vs. Laminar FlowTurbulent Flow

Straight Air Passages •Laminar Flow•Doesn’t clog

Typical Velocity•200 - 500 ft./ min.

Static pressure loss•0.3 - 1.3 inch

RenewAire Technology

Trouble-Free ERV

Does the RenewAire Core Foul with Particulate?

As you can see particulate will mat on the low velocity entering faces of the core.

Trouble-Free ERV

Note that the air passages have no particulate accumulation.

Trouble-Free ERV

After vacuum cleaning with soft brush- air flow is fully restored.

Trouble-Free ERV

RenewAire

Core Warranty

Plus, Two year parts & manufacturing quality

warranty

Trouble-Free ERV

A Complete Line of Static-Plate ERVs

Residential and Small Commercial

Applied Products

RTEC – Roof Top End Connect

Outdoor Commercial

Indoor Commercial

“C” - Series (cabinet) 500-20,000 CFM “P” – Series (panelized) 1,500-unlimited CFM

Requires blowers and manifolds by others

5 models 250-3,700 CFM 1 or 3 phase multi-voltage 24 volt control

Available transition for various brand rooftop units

7 models 250-7,950 CFM 1 or 3 phase multi-voltage 24/120/230 volt control

Available vertical or horizontal duct connections

5 models 100-500 CFM Built-in 24 volt transformer/relay package

V H 11 models 250-7,950 CFM

1 or 3 phase multi-voltage 24/120/230 volt control

Trouble-Free ERV

Example

Integrated ERV/Fan Coil

in School Classroom

Trouble-Free ERV

Example

Integrated ERV/VAV box

in School Classroom

Trouble-Free ERV

Twenty-seven Twenty-seven EV450 units above EV450 units above suspended ceilingsuspended ceiling

Yellow Medicine East High School, MN

School Retrofit Installation

Trouble-Free ERV

HE2X900V with Packaged

Fan Coil

Wingspread

Trouble-Free ERV

Hospitality – Hotel Installation

Woodfield Suites

Madison, Wisconsin

Six roof-top stand-alone units- 24hr, 365 day operation

Trouble-Free ERV

School New Construction

Ballentine Elementary School

Columbia, South Carolina

Fourteen RTEC ERVs tied into Carrier and ICP roof top units

Trouble-Free ERV

ROOFTOP END- CONNECT SYSTEMS

ROOFTOP END- CONNECT SYSTEMS

Trouble-Free ERV

Tying the RTEC ERV and Rooftop a/c unit together

+ + +

RTEC RTEC ERVERV

FlangeFlange ScoopScoopRooftop Rooftop

a/ca/c

=Problem Solved

Trouble-Free ERV

HE900RTEC Connected to Trane Rooftop A/C

Trouble-Free ERV

C-Series Assembly of RenewAire cores in Stackable Cabinet500 CFM up to 4400 CFM

Up to five units can be stacked for up to 22,000 CFM

• Equipped with Standard 2” Pleated Filters• Double Wall Construction Available• Uses Separate Blowers

Custom & Applied Products

Trouble-Free ERV

Manifold Stack -(3)- C3000 Units

RETURN AIR

(from space)

SUPPLY AIR

(to space)

Packaged Air Conditioning Unit

Fresh Air Blower

Service Area

Exhaust Air Blower

OUTSIDE AIR

EXHAUSTAIR

RenewAire Applied Products

Cabinet - “C” Series - ERV Installed in Air Handling System

RenewAire

Trouble-Free ERV

Cabinet - “C” Series - ERV Installed in Air Handling System

Bob Johnson Hockey Training Facility

Trouble-Free ERV

Healthcare – Hospital Installation

Applied Products:two P3003 and two P3002

Holy Family HospitalManitowoc, Wisconsin

Trouble-Free ERV

RenewAire: Competitive Advantages

ARI Certified 0% cross contaminationWarranted against core degradation

for 10 yearsLowest maintenance costsFull commercial and residential lineCompetitive pricing

Trouble-Free ERV