Air conditioning – Refreshes your life EWTP110-540MBY Applied Systems Sales1 EWTP-MBYNN Air-cooled Heat Recovery

Applied Systems Sales 1

Air conditioning – Refreshes your life

EWTP110-540MBY

EWTP-MBYNNAir-cooled Heat Recovery



EWTP110-540MBY

ContentsA. Concept

B. Equipment Overview

C. Capacity Range

D. Operation Range

E. Specifications

F. Practical Examples & Reference

EWTP-MBYNNAir-cooled Heat Recovery



EWTP110-540MBY

Criteria• Hot water demand must be great enough to justify cost• High enough useful waste heat temperature

CoolingLoad

400C

450C

120C

70C

HeatingLoad

Return

Supply Supply

Return

A. Heat Recovery Concept



EWTP110-540MBY

• Daikin stepless single screw compressor

• All components optimized for use with R-407C

• Air heat exchanger: Cross fin coils / Hi-X tubes and PE waffle louvre fins

• Water heat exchanger: Brazed plate evaporator & heat recovery exchanger

• Double refrigeration circuit (from 400kW)

EWTP110-160MBYNN EWTP200-340MBYNN EWTP400-540MBYNN

Double Circuit (2 Compressors)Single Circuit (1 Compressor)

Hea

t Rec

over

y C

hille

rs:

B. Equipment Overview



EWTP110-540MBY

Single circuit

(1 compressor)

Double circuit

(2 compressors)

CC kW 107 138 158 191 274 335 379 449 520

C. Capacity Range

HP 40 50 60 80 100 120 140 160 200

EWTP-MBYNNModel 110 140 160 200 280 340 400 460 540

CCHR kW 98 126 144 171 251 311 337 401 465

HCHR kW 116 148 176 208 301 377 407 434 441



EWTP110-540MBY

-30

-10 04

1016

20

Glycol Water

Ambient (°C )

LWE (°C)

30

-20

-10

0

20

30

40

50

10

-2026

43

39

-15

Continuous Operation Area Pull-Down

Area

-5

36

D. Operation Range - Cooling

Low Ambient to -15°C

Protect against freezing by:- Evaporator heater tape (std)- Glycol

LWE to -10°C

On

spec

ial r

eque

st



EWTP110-540MBY

E. Specifications

Daikin Stepless Single Screw Compressor

2pcs Brazed Plate Heat Exchangers

pCO2 Control Platform* See EWAP~MBY Presentation



EWTP110-540MBY

Total Heat Recovery• 65 to 85% Heat Recovery• Lower LWE of 450C

40oC

45oC

Useful HeatCompressor Discharge Gas

Partial Heat Recovery (Desuperheater)• 25 to 35% Heat Recovery• High LWE upto 600C

50oC

60oC

Expansion Valve

CompressorEvaporator

High Pressure

Low Pressure

7oC 12oC

Condenser

OR

Hot Water Supply

E. Specifications – Heat Recovery Principle



EWTP110-540MBY

Economiser

Heat Recovery BPHE

Evaporator

To Condenser

From Condenser

Daikin Single ScrewCompressor

Compressor Discharge

E. Specifications -> Construction



EWTP110-540MBY

% Heat RecoveryLWC 110 140 160 200 280 340 400 460 540 Avg40/45 85% 85% 85% 85% 85% 85% 85% 75% 65% 82%40/50 85% 85% 85% 85% 85% 85% 85% 75% 65% 82%45/55 60% 60% 60% 60% 60% 60% 60% 50% 40% 57%50/60 35% 35% 35% 35% 35% 35% 35% 30% 25% 33%

Where:

% Heat Recovery =

CCHR Mode + PIHR Mode

COP in HR Mode

LWC 110 140 160 200 280 340 400 460 540 Avg40/45 5,34 5,63 5,07 5,12 5,34 5,18 5,20 4,65 4,19 5,0840/50 5,04 5,29 4,69 4,77 4,96 4,94 4,89 4,33 3,89 4,7645/55 4,20 4,41 3,90 3,97 4,13 4,11 4,06 3,55 3,22 3,9550/60 3,33 3,50 3,09 3,14 3,27 3,27 3,21 2,90 2,70 3,15

HC

E. Specifications - % Heat Recovery



EWTP110-540MBY

Conventional Heat RecoveryFixed condensing temperature

Conventional Heat RecoveryUncontrolled Hot water temp

DAIKIN Heat Recovery ChillerOptimized condensing temperature

DAIKIN Heat Recovery chiller Controlled Hot water temp

Set point

T (°C)

Hot water & condensing temperature

t 0 t 1 t 2 t 3 t 4 t 5

Saved Energy

DAIKIN Heat Recovery ChillerConventional Heat RecoveryPower input

PI (kW)

t 0 t 1 t 2 t 3 t 4 t 5

E. Specifications – Heat Recovery Principle



EWTP110-540MBY

Sound reduction in function of ambient temperature

015 20 25 30 35 40

-1

-2

-3

-4

Sound power level (dBA)

Ambient temp. (°C)

E. Specifications -> Inverter Fans

Standard with Heat Recovery units

- Stable HP control, better part load efficiency- Smooth operation, better colour of sound- Linear sound reduction in function of ambient

Further Reduction of - 3dBa



EWTP110-540MBY

The Load

Additional Heating Source

OR

Gas, Oil, … Electricity

Cooling

Heat recoveryPCO² Contoller

Temperature Sensor

Remote Mode SwitchEnable / Disable

Pump

Pump Contact

L NA1

A2

Feedback

Self adaptive control to run at optimized cooling capacity / Heat recovery ratio

E. Specifications – Control Possibilities



EWTP110-540MBY

Optimized balancing between CC & HR capacity

CapacitykW

High PressureBar

22 Bar19 Bar

HR CapacityCC

E. Specifications – Optimised Control



EWTP110-540MBY

In-LineBoiler

City MainsCold Supply

Hot Supply

Stratified Hot W

ater

Storage

Twin Pump Set

OPHR• Used during off-peak • Assists inline heater

Boiler• Used during peak & off-peak periods• Maintains tank temperature

E. Specifications – Installation



EWTP110-540MBY

Daikin’s Solution = DICN =

Without Communication

=

• Erratic Control on LWE• Loss of performance at terminals• No plant optimization to meet load• No defined lead or standby unit• No defined unit running hours

Multiple Chillers

LOAD

120C 120C

70C

120C

70C 70C

HR Chiller can be given priority -> increased reliability at part load

600C

500C

LOAD HR Chiller

E. Specifications – DICN Control



EWTP110-540MBY

Cooling mode fans at full speed min condensing pressure

Cooling Capacity 138kWPower Input 54kWEER 2.56

Example: EWTP140MBYNN

At nominal conditions: 7oC and 12oC chilled water & 35°C ambient

Heat recovery mode increased condensing max heating capacity

Hot Water 45oCHeating Capacity 148kWCooling Capacity 126kWPower Input 47,8kW

Hot Water 60oCHeating Capacity 60,2kWCooling Capacity 121kWPower Input 51kW

COP = 5.73%HR = 85%

COP = 3.55%HR = 35%

F. Practical Examples



EWTP110-540MBY

F. Practical Examples - Simple Payback

Based on: • Energy Consumption of 0,15€ per kWhr• 4hrs operation at 100% -> assume multiple chiller installation

Exceptional Investment for Customer!

Avg Payback of option OPHR: • Hot Water 40/50 42 Days or 8 weeks• Hot Water 50/60 102 Days or 20 weeks

Our Findings

Avg Payback of Chiller + OPHR: • Hot Water 40/50 1 Year• Hot Water 50/60 2,5 Years



EWTP110-540MBY

New Zealand ApplicationMudhouse-River Co-operative

3 x EUWA200MZY

Cooling ModeTotal Cooling = 1.5MW

HR ModeTotal Cooling = 1.4MWTotal HR = 0.8MW

ConditionsLWE = -4oCLWC = 52-55oC

1 EUWA200MZY unit produces 15,000,000 l/yr

Affiliate: Daikin AustraliaInstaller: Martella



EWTP110-540MBY

Large

Air-Cooled

Heat Recovery Chillers

EWTP110~540MBY1. R-407C: the good choice !

2. High specifications

3. High Quality Components

4. Useful Options

Documents

Air conditioning – Refreshes your life EWTP110-540MBY Applied Systems Sales1 EWTP-MBYNN Air-cooled Heat Recovery