Appendix I

Additional Information

1. Market share of chiller manufacturer in Bangladesh
In Bangladesh, most of the centrifugal chillers installed and operated are the American
manufacturers and the top three manufacturers, namely Carrier, Trane and York has a total share of
90 % in the market according to a report published by BSRIA1 in 2015. This is consistent with theresult of an interview with these manufactures in Bangladesh conducted by the methodology
proponent.

2. Research on the COP values of chillers in Bangladesh
2.1Standardized COP* values

COP values of centrifugal chillers marketed in Bangladesh are calculated from values of thepractical data by manufacturer’s testing from one of the top three manufacturers, standardized by theparameters as indicated in the proposed methodology. These are summarized in Table 1 below. It is
known that the chillers with larger cooling capacity tend to have higher energy efficiency than ones
with smaller cooling capacity. Accordingly, the COPs are categorized based on the cooling capacity
ranges.
*standardized COP is calculated based on the same manner stated in Criterion 2 on the proposedmethodology

Table 1: Standardized COP values of centrifugal chiller by cooling capacity in Bangladesh
Cooling capacity (USRt)

300

525

700

1050

COP*

5.13

5.50

5.46

5.66

(Source: Information from one of the top three manufacturers)

2.2

Actual measured COP values

Actual measured values of chillers of the other top three manufacturers were collected on theground (at a shopping mall where the total capacity of the chiller was 550 USRt and at a university
where the capacity of the chiller was 1,150 USRt. The result shows that COP values are 2.72 for 550USRt and 4.88 for 1,150 USRt respectively. It has been confirmed by expert opinion that the values
are representative of centrifugal chillers operating in the country. Therefore it can be said that theCOP values under actual operational conditions are much lower than the standardized COP values,
indicating that the standardized values which forms the basis for calculation of reference emissions

1

BSRIA is a test, instruments, research and consultancy organisation, providing specialist services
in construction and building services. https://www.bsria.co.uk/1

Appendix Iare conservative.

3. Conclusion
As shown above, the research shows that the standardized values are conservative compared withthe actual performance of chiller in Bangladesh. It has been confirmed by expert opinion that thecollected information on market share and COP in Table 1 and the actual measured value mentionedabove are reliable.
Therefore the reference COP is determined based on the above standardized COP values as shownin Table 2 below.

Table 2: Established COPre,i for the proposed methodology
Cooling capacity (USRt)

x<300300≦x<700700≦x<1,150

COPre, i5.135.50

5.66

These reference COP values are conservative from the following perspectives:
The reference COP values are based on the calculated data of the chiller currently marketedin Bangladesh. These COP values are calculated at full load for each cooling capacity.



Actual measured COP values are far below from those standardized values



COP of centrifugal chillers tend to be higher with increasing capacity. Therefore, COP isdefined in the step-wise manner, the maximum values of COP in each cooling capacity
ranges are defined as the reference COP representing higher end of the each cooling
capacity range as show in the Figure 1 below.

Figure 1:Reference COP values set in step-wise manner2