energy presentation thailand

8/8/2019 Energy Presentation Thailand

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Energy EfficiencyEnergy Efficiency

Developments in the HotelDevelopments in the Hotel

industryindustry

Mr.Boonpong Kijwatanachai

Thai Alternative Engineering Consultant Co.ltd

365/1188 Phuttabucha 47, Thungkrue, Bangmod

Bangkok 10140

Tel. 02 874 8164

Fax. 02 874 8165


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1. Introduction

Hotel Classification

Small and Medium Scale

Large Scale

Classification No. of Room Useable Area Storey Electricity bill

Scale ( sq.m ) ( Index based on 3000kWh/m2-yr )

Small and Medium 20-150 1,000-6,000 1-10 50,000+

Large 100-500+ 6,000-30,000 10-30 300,000+


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2. Energy End Use in Hotel

Other system

28.93%

Sanitary and Waste

system 5.18%

Central

air-conditioning

system 46.65%

Split type air

conditioning system

0.89%

Lighting

system18.36%


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2. Most Typical Load Profile

15-min kW Load Profiles of 5-star Hotel

0

200

400

600

800

1000

1200

1400

14:15:00

9/11/00

22:30:00

9/11/00

6:45:00

9/12/00

15:00:00

9/12/00

23:15:00

9/12/00

7:30:00

9/13/00

15:45:00

9/13/00

0:00:00

9/14/00

8:15:00

9/14/00

16:30:00

9/14/00

0:45:00

9/15/00

9:00:00

9/15/00

17:15:00

9/15/00

1:30:00

9/16/00

9:45:00

9/16/00

18:00:00

9/16/00

2:15:00

9/17/00

10:30:00

9/17/00

18:45:00

9/17/00

3:00:00

9/18/00

11:15:00

9/18/00

Time

kW


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3. Energy Potential Guideline

Energy Management System

Reduce Loss

Improve Efficiency

Reclaim Heat and Recovery


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Case StudyCase Study

How to conduct energy conservation

How to measure and analysis

How to gathering all data

How to reduce losses and improve efficiency

How to evaluate and follow up

How to do the energy measures and financial model

How to share option


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Hotel

Electricity Thermal

HVAC

Lighting

Waste Water Treatment

Cold Water System

Compressed Air System

Others

Boiler System

(Laundry and Cooking)

Hotel Energy End Use


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Single Line Diagram

G

LIGHTING &

RECEPTACLESSPARE

TIE BUS

ELEVATORS LIGHTING &RECEPTACLES

2500 kVA

33 kV-400/230V

2500 kVA

33 kV-400/230V

AIRCOND.

WATERPUMP

MOTORS ELEVATORS

Electrical System


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Central Cooling Diagram

CHILLER

CHILLED WATER

PUMP

(CHP)

ROOM

AHU/FCUs

CONDENSER WATER PUMP

(CDP) COOLING

TOWER

(CT)

HVAC


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P3

P2

P1

P4

P5

P6

F

F

S

P7 P8 P9

BOOSTER PUMP

SOFT WATER PUMPWATER TANK

COLD WATER PUMP

SUPPLY

Cold Water Supply Diagram

Sanitary System


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Waste Water Treatment Diagram

TRANSFER

SUMP PUMPS COMMINUTOR

AERATED GRIT

CHAMBER ANDPREAERATION

AB

CLARIFIER

SPRAY WATER

STORAGE TANK

CHLORINE

CONTACTTANK

EFFLUENT

PUMP SUMPS

TO PUBLIC

SEWERAERATION TANK

AB CI2

SLUDGE SUMP

SLUDGE

DEWATERING

MACHINE

DRY SOLIDS

TO DISPOSALAB

RETURN

SLUDE

EXCESS SLUDE

CI2

AB

PUMP

AIR BLOWER

CHLORINE GAS

Waste Water System


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Power x Time of use

Energy use


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Step1 :

Step 2 :

Survey all Thermal and Electricity Equipment

Detail energy end use per annual


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Step 1 HVAC Chiller

Chilled Water Pump Condenser Water Pump

Cooling Tower

AHU/FCU

Lighting

Cold water

Waste water

Lift and escalator

Others

Cold Water Pump

Booster Pump

Soft Water Pump


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CHILLER AUDITCHILLER AUDIT


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CHILLER AUDITCHILLER AUDIT


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Flow meter


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Power Meter


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Air flow meter and Hygrometer


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March 4, 2010 49Power meter

SPLIT TYPE AUDITSPLIT TYPE AUDIT


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SPLIT TYPE AUDITSPLIT TYPE AUDIT


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WATER PUMP AUDITWATER PUMP AUDIT


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20 C


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Step 2

Lighting16 %

Cold water12 %

Lift5 %

Sanitary3 %

Others4 % HVAC

60 %


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Hygiene 34 %Drying machine 54 %

Ironing 8 %

Washing 4 %


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Recommendation to measure

Position to measure

Type of instrument

Accuracy

Condition of machine

Method of measure

Others


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1 Hygrometer

2 Anemometer

3 Power Meter

4 Flow Meter

5 Conductivity Water Analysis

6 Thermocouple

7 Lux Meter

8 Power Recorder

Load profiles in one week


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Load profiles in one week

LOAD PROFILE

0

200

400

600

800

1000

1200

1400

1600

2:00:00 PM

28/10/2003

2:00:00 AM

29/10/2003

2:00:00 PM

29/10/2003

2:00:00 AM

30/10/2003

2:00:00 PM

30/10/2003

2:00:00 AM

31/10/2003

2:00:00 PM

31/10/2003

2:00:00 AM

1/11/2003

2:00:00 PM

1/11/2003

2:00:00 AM

2/11/2003

2:00:00 PM

2/11/2003

2:00:00 AM

3/11/2003

2:00:00 PM

3/11/2003

2:00:00 AM

4/11/2003

2:00:00 PM

4/11/2003

Time

kW


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Losses in the systems are mostly come from improper operation

and maintenance

Efficiency / Efficacy means:

Losses

Control Method

Operation Hours


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Recognize

Problem

Analyze Variance

to Problems

Establish Reportingand

Control System

Monitor and Follow-up

Energy Report toManagement

(Implementation)

Identify andAnalyze ECOs

ConductEnergyAudit

Plan to TakeAction


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Energy Saving=

Baseline Energy Use - Post installation Energy Use

Engineering Calculations

Metering and Monitoring

Billing Analysis

Computer Simulation

Assessment and agreement between relevant firms


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Example Graph

kw/ton

% Load

Ton of Cooling

Time

kwh

Ambient Temp.

% Occupancy

Time

Example of Energy Measures


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1. Proper adjust room temperature

Existing :

Room temperature 25 OC

Chilled water flow rate = 900 GPM

Water friction losses = 50,926 Btu/hr 25 OC= 848,770 Btu/hr

Adjust temperature to 27

O

C= 667,541 Btu/hr

Adjust temperature to 28 OC= 542,075 Btu/hr

: 27 oC = (667,541 + 50,926) = 59.87

12,000

28 oC = (542,075 + 50,926) = 49.4 12,000


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During night time room temperature can be increased and saving will be as shown

Room temerature 27 OC = (93.7 - 82.0) x 12 x 30 = 4,212 kWh/

Tariff rate 2 /kWh) = 8,424/

Room temerature 28 OC = (82.0 - 76.1) x 12 x 30 = 2,124 kWh/(Tariff rate 2 /kWh) = 4,248 /

10 20 50100 % Load

100 % kW

28

50

Room Temp RT % of use % kW kW

25 75 25 32 93.7

27 59.8 20 28 82.0

28 49.4 16.5 26 76.1

Part Load Performance Graph of Room Temperature


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Daily Energy Measures


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Daily Energy Measures

1. Turn off unused lamps

2. Traffic planning

3. Optimization of HVAC

4. Increasing room air conditioning as much as

possible

5. Optimization of water

6. Reuse and recycle papers

7. Turn off PC and notebook computer

8. Regular maintenance HVAC


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QQ

AA

Thank you for your attention


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Thank you for your attention

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