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Humidification in Hospitals Humidification in Hospitals Nebraska Society of Healthcare Engineers
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Humidification in Hospitals Nebraska Society of Healthcare Engineers.

Dec 14, 2015

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Page 1: Humidification in Hospitals Nebraska Society of Healthcare Engineers.

Humidification in HospitalsHumidification in Hospitals

Nebraska Society of Healthcare Engineers

Page 2: Humidification in Hospitals Nebraska Society of Healthcare Engineers.

Presented ByPresented By

Nebraska Society of Healthcare Engineers

Eric G. Sherman, P.E., LEED AP, CxA

Jonathon Spreeman, District Sales Engineer

Luke VanCamp, Sales Engineer

Page 3: Humidification in Hospitals Nebraska Society of Healthcare Engineers.

AgendaAgendaHumidification of Hospitals

Healthcare Humidification Code

Hospital Dehumidification

Strategy

Comparison

Case Studies

Hospital Humidification

Strategy

Comparison

Questions…..

Nebraska Society of Healthcare Engineers

Page 4: Humidification in Hospitals Nebraska Society of Healthcare Engineers.

Healthcare Humidification CodeHealthcare Humidification CodeEric ShermanEric Sherman

Nebraska Society of Healthcare Engineers

Page 5: Humidification in Hospitals Nebraska Society of Healthcare Engineers.

AIA / FGI Guidelines for Healthcare Construction

NFPA

The Never Ending Debate

Nebraska Society of Healthcare Engineers

Healthcare Humidification CodeHealthcare Humidification Code

Page 6: Humidification in Hospitals Nebraska Society of Healthcare Engineers.

Hospital DehumidificationHospital DehumidificationJonathon SpreemanJonathon Spreeman

Nebraska Society of Healthcare Engineers

Page 7: Humidification in Hospitals Nebraska Society of Healthcare Engineers.

Dehumidification StrategiesDehumidification Strategies

Common System Types

• Traditional Cooling & Reheat

• Split Dehumidification Unit

– Dedicated OA Coil

– Dedicated RA Coil

• Series Desiccant Wheel

• Heat Generated Desiccant

Nebraska Society of Healthcare Engineers

Page 8: Humidification in Hospitals Nebraska Society of Healthcare Engineers.

Basic CV system

Cool & reheat (1 coil)

Cool & reheat (2 coils)Upstream coilDownstream coil

Split dehumidification unitOA coilRA coil

Trane CDQ

Heat Regenerated Desiccant

70% 26.6 55.3 0

60% 40.0 47.0 12.0

60% 40.0 12.020.0 55.020.0 47.0

60% 28.0 024.0 42.5

4.0 55.3

52% 29.3 50.3 0

52% 44.0 55.3 * 24.0

Space% RH

Coolingtons

lvg coil°F

Reheat“tons”

CHW°F

45 °F

39 °F

45 °F

39 °F

45 °F34 °F

45 °F

45 °F

*High Temperature Preheat

Based on 15,000 cfm

System ComparisonSystem Comparison

Nebraska Society of Healthcare Engineers

Page 9: Humidification in Hospitals Nebraska Society of Healthcare Engineers.

Cool & reheat (1 coil)

Cool & reheat (2 coils)Upstream coilDownstream coil

Split dehumidification unitOA coilRA coil

Trane CDQ

Heat Regenerated Desiccant

$5.07 3000 $15,250 $300K

$4.53 3000 $13,590 $272K

$3.07 3000 $9,210 $184K

$2.53 3000 $7,590 $152K

$6.00 3000 $18,000 $360K

Oper $/hr @ design

AnnualOper Cost

Over 20

yearsCool Reheat

-11%

-39%

-50%

--

+18%

$0.058/kwh $0.78/therm

Annualhrs

Annual Oper Cost vs

System ComparisonSystem Comparison

Nebraska Society of Healthcare Engineers

Page 10: Humidification in Hospitals Nebraska Society of Healthcare Engineers.

CA

OA

RA

SA

MAMA'

WA

TER

VA

PO

R

50F

49F DPT

55F

43F DPT

80F

60F DPT

75F

63F DPT

TRANE CDQ WHEEL

A “Series” Desiccant wheel used to improve the dehumidification ability of a cold coil

CONDENSATE

Application of Series Desiccant WheelApplication of Series Desiccant Wheel

Nebraska Society of Healthcare Engineers

Page 11: Humidification in Hospitals Nebraska Society of Healthcare Engineers.

Application ExamplesApplication Examples

Nebraska Society of Healthcare Engineers

Building Expansion (Existing Central Plant)

Good Samaritan Hospital Expansion

– 30,000 CFM Dedicated Surgery Unit

– Existing 42 Degree Chilled Water

– Leaving Unit: 60 Degree DB and 41 Degree DP

Building Expansion (Existing Central Plant)

Gothenburg Hospital Surgery Area

– 6,000 CFM Dedicated Surgery Unit

– DX condensing unit

– Leaving Unit: 57 Degree DB and 44 Degree DP

Page 12: Humidification in Hospitals Nebraska Society of Healthcare Engineers.

Hospital HumidificationHospital HumidificationLuke VanCampLuke VanCamp

Nebraska Society of Healthcare Engineers

Page 13: Humidification in Hospitals Nebraska Society of Healthcare Engineers.

Nebraska Society of Healthcare Engineers

Methods of HumidificationMethods of Humidification

• Direct Steam Injection• Evaporative Pan • Water Spray

Page 14: Humidification in Hospitals Nebraska Society of Healthcare Engineers.

Nebraska Society of Healthcare Engineers

Direct Steam InjectionDirect Steam Injection

Page 15: Humidification in Hospitals Nebraska Society of Healthcare Engineers.

Nebraska Society of Healthcare Engineers

Humidification GridHumidification Grid

Page 16: Humidification in Hospitals Nebraska Society of Healthcare Engineers.

Nebraska Society of Healthcare Engineers

Unfired Steam GeneratorsUnfired Steam Generators

Series RB

Series RB-H Series RB-V

Page 17: Humidification in Hospitals Nebraska Society of Healthcare Engineers.

Nebraska Society of Healthcare Engineers

Steam-to-Steam HumidifierSteam-to-Steam Humidifier

Page 18: Humidification in Hospitals Nebraska Society of Healthcare Engineers.

Nebraska Society of Healthcare Engineers

Humidification Grid with Atmospheric Humidification Grid with Atmospheric Steam GeneratorSteam Generator

Page 19: Humidification in Hospitals Nebraska Society of Healthcare Engineers.

Nebraska Society of Healthcare Engineers

Gas-Fired HumidifierGas-Fired Humidifier

• Will work on natural gas or Will work on natural gas or liquid propane gasliquid propane gas

• Includes models for both Includes models for both indoor and outdoor serviceindoor and outdoor service

• Provides steam production Provides steam production capacities up to 475 lbs/hrcapacities up to 475 lbs/hr

Page 20: Humidification in Hospitals Nebraska Society of Healthcare Engineers.

Nebraska Society of Healthcare Engineers

Energy SavingsEnergy Savings

Electricity vs. Gas

Electricity @ $0.08 / kW

Gas @$0.53 / Therm

Based on 150 Lbs/hr Output

$6,600

$2,500

$0$1,000$2,000$3,000$4,000$5,000$6,000$7,000

Operating Cost

ElectricityGas

Page 21: Humidification in Hospitals Nebraska Society of Healthcare Engineers.

Nebraska Society of Healthcare Engineers

Electrode Type HumidifierElectrode Type Humidifier

Page 22: Humidification in Hospitals Nebraska Society of Healthcare Engineers.

Nebraska Society of Healthcare Engineers

Water DependenciesWater Dependencies

• Conductivity (200-400 (umho)• Hardness (133-266 PPM)• Hardness (7.7-15.5 Grains/Gallon)

Page 23: Humidification in Hospitals Nebraska Society of Healthcare Engineers.

Nebraska Society of Healthcare Engineers

Water ImpuritiesWater Impurities

Page 24: Humidification in Hospitals Nebraska Society of Healthcare Engineers.

Nebraska Society of Healthcare Engineers

Resistive Heating Element TypeResistive Heating Element Type

Page 25: Humidification in Hospitals Nebraska Society of Healthcare Engineers.

Nebraska Society of Healthcare Engineers

Adiabatic HumidifiersAdiabatic Humidifiers

Page 26: Humidification in Hospitals Nebraska Society of Healthcare Engineers.

26 0 10 20 30 40 50 60 70 80 90

10

20

30

40

50

100 90 80 70 60 50 40 30

%RH

Gra

i ns

of M

oist

ure/

l b. D

r y A

ir

Wet

Bul

b F

20

30

40

50

Dry Bulb F

FOGGERSAVINGS

STEAM MIXING POINT

FOGGER MIXING POINT

RASA

OA

26

0 10 20 30 40 50 60 70 80 90

10

20

30

20

30

40

FOGGERSAVINGS

STEAM MIXING POINT

FOGGER MIXING POINT

OA

Spring/Fall Spring/Fall EconomizerEconomizer

1. O.A. Mixing2. Fogging3. Building Heat Gain

Page 27: Humidification in Hospitals Nebraska Society of Healthcare Engineers.

Nebraska Society of Healthcare Engineers

NozzleNozzle

Page 28: Humidification in Hospitals Nebraska Society of Healthcare Engineers.

Thank you for your time!Thank you for your time!

Questions please?Questions please?

Nebraska Society of Healthcare Engineers