CASE STUDYCOPELAND SCROLL DIGITAL VRF AIR CONDITIONING

Saves precious
energy forInternational CopperOffice, Mumbai
The Digital Scroll VRF AC provides many intangible benefits like improvement
in aesthetics, savings in floor space for outdoor units, low sound performance,
flexibility in using different types and capacities of Indoor unit etc., asexperienced by ICPCI.

Customer
The International Copper Promotion Council (India),(ICPCI), Powai, Mumbai is the Indian centre of theInternational Copper Association Limited, a leadingorganization for the promotion of copper world wide.
ICPCI’s principal objective is “to promote the beneficial
usage of copper for safety, health, environment
and energy savings.” This is done by implementing
programmes and initiating and funding projects in copper
technology, research and market development.and madeit difficult to install additional showcases for expansion.

Challenge
The seven Split ACs used at ICPCI could not maintaincomfort conditions in the office, even though they were
under annual maintenance contract with a dealer of a
reputed brand. The office staffs were complaining about
the poor comfort conditions in the office. The electrical
power supply to ICPCI, Powai, Mumabi office is provided
by a private electrical company, under LT2 tariff. Withescalating electricity tariff charges, the annual spend on
AC energy consumption was increasing.

ICPCI discussed the issue with Copeland and decided toswitch over to the latest technology Digital Scroll VRF AC
system to improve the office comfort conditions and toreduce the energy bill. ICPCI wanted to verify the energy
savings and improvement in comfort conditions andassigned auditing work on comfort improvements andenergy savings, pre & post Digital scroll VRF installation
to TERI.

Technology and services• The Digital Scroll VRF Air conditioner was designed,manufactured, installed and commissioned by Blue Star
Limited, one of the key OEM partners of Copeland in India• Copeland Scroll Digital compressor is used in the VRF AC• Transition to environment friendly R410A refrigerant fromexisting R22 AC system

Application
Replacing seven R22 Split Air conditioners of 1.5TR and2TR capacity with single 12HP R410A Digital Scroll VRF
AC at International Copper office at Mumbai.

Solution

Results

ICPCI got a base line energy audit conducted byTERI in April 2008. The temperature, % RH, powermeasurements, and the comfort feelings of employees
were also recorded.

• 31% annual kWh energy saving proved by Energy
audit and three year energy bill comparison

With the involvement of Blue Star sales team andtechnical team, a 12HP, R410A, Digital Scroll VRF unit
Model BVRF-12TCE was installed and commissioned inMay 2008. This 12HP outdoor unit is connected to eight
different indoor units of wall mounted & cassettes typeunits with different cooling capacity.
The energy saving potential of Digital scroll VRF wasproved in the post energy audit conducted by TERIin August 2009, after successful operation of the AC
system for 12 months by ICPCI. Comparison of energy
bills paid by ICPCI, Mumbai office over a period of June
2006 (before Digital scroll VRF installation) to May 2009(one year after installation) proved reduction energy
consumption in kWh by 31% on annual basis and realised
energy cost saving of 38%. Difference in percentage
savings for energy (kWh) and cost savings (Rupees) isdue to change in tariff From Rs.8.50 to Rs.9.40 per kWh.

• Improved human comfort and working environment• Intangible benefits like aesthetic & soundperformance improvement

Total AC capacity

Before modification

After modification

11.5TR

10.0 TR (12HP)

No. of indoor units

78Refrigerant

HCFC22HFC410A

Type of AC system

Individual split AC

Multi indoor central VRF

Asthetics

Baseline

Great improvement

Outdoor unit foot print

Baseline

Drastically reduced

Outdoor unit soundBaseline

Drastically reduced

Temperature control

Set point + 2- 3°C

Set point +0.5°C

Energy saving

Baseline

31% kWh annually

Inside comfort

Not good

Vast improvement

The comfort conditions inside the office greatly
improved to the satisfaction of ICPCI employees, as theelectronic control system of Digital scroll VRF monitors
the usage and load conditions of each Indoor unit every
few seconds and modulates the capacity output of theoutdoor unit over 10% to 100%. It also allows different
rooms to be set at different temperatures, as per user
requirement, and maintains it within +0.5°C.
The Digital scroll VRF AC provides many intangible
benefits like improvement in aesthetics, savings in floor
space for outdoor unit, low sound performance, flexibility
in using different types and capacities of Indoor unit etc.,
as experienced by ICPCI.
Overall the retrofit project experience and benefits arewell appreciated and considered as a true value forinvestment by ICPCI. Mr. Manas Kundu of ICPCI aptly
sums this up, “We evaluated different options available
to us to improve the employees comfort and to reduce
the Air conditioning energy bill. The results over morethan a year now have vindicated that our decision toinvest in a Digital VRF AC system was the right one, eventhough the first cost was higher than other options.”
In India, different OEM partners of Copeland like Blue
Star, Samsung, Voltas and York offer Digital VRF ACsystems and significantly contribute in saving precious
energy and environment by creating hundreds ofsuccess stories like the ICPCI, Mumbai site.

2Table 12

Month-wise electricity consumption for last three years

SI. no.

Month

Total
consumption,
kWh

Month

Total
consumption,
kWh

Month

Total
consumption,
kWh1

May-091,956

May-081,824

May-074,811

2

Apr-091,864

Apr-082,402

Apr-07

4,178

3Mar-09

1,854

Mar-082,201Mar-074,142

4

Feb-091,704

Feb-081,799

Feb-073,406

5

Jan-091,745

Jan-081,260

Jan-073,425

6Dec-081,450

Dec-071,814

Dec-063,205

7

Nov-08

1,717

Nov-07

2,649

Nov-06

4,1088

Oct-08

1,659

Oct-073,501

Oct-064,525

9

Sep-08

1,719

Sep-07

3,368

Sep-063,851

10Aug-081,824

Aug-072,758

Aug-06

2,513

11

July-08

1,851

July-07

3,699

July-06

2,688

12

Jun-08

1,895

Jun-073,811

Jun-06

4,097

Total

21,238

Table 1331,08644,949Month-wise energy bill amount for last three years

SI. no.

MonthEnergy bill (RS)Month

Energy bill (RS)Month

Energy bill (RS)1

May-0916,291

2

Apr-0915,535

May-08

16,610

May-0745,137

Apr-0822,570

Apr-0735,8833

Mar-0916,211Mar-0820,010Mar-0727,012

4

Feb-0915,357

Feb-0817,090

Feb-0723,4825

Jan-0915,721

Jan-0811,011

Jan-07

23,633

6

Dec-08

13,102

Dec-07

16,583

Dec-06

22,8407

Nov-0815,473

Nov-07

25,106

Nov-0629,2308

Oct-0813,720

Oct-0733,802Oct-0646,497

9

Sep-0814,344

Sep-0732,445

Sep-06

24,836

10

Aug-0815,207Aug-07

25,553Aug-06

15,814

11

July-08

15,429July-07

34,889July-06

16,99412

Jun-08

14,770

Jun-0736,507

Jun-06

26,130

Total

181,160

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Asia 01 00 Issued 11/2019 ©2024 Copeland LP.

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