HC-22a VS R-22

[ahmadshafiq87]

Hi all. i would like to get some info from you guys, regarding on these 2 refrigerant. Recently my company asked me to find the COP for these 2 refrigerants. HC-22a will be a drop-in replacement for R-22a as the supplier proposed to the company. How do i calculate COP for the chiller based on these 2 refrigerant? Please help as i'm really new to this refrigeration system..

[GOPINATH]

Hi Hello,

Iam going to Retrofitt R290 in R22 split air conditioner of capacity 18000 Btu,for performance testing , with no modification in the system , is there any leak testing alarm devices available to sense the leakage in the system , The system is tested in a closed psychrometric room at various conditions.

Regards,
Gopinath.
+91 9884783674

[ahmadshafiq87]

u r not answering the question. u just added another one. and it does not correlate at all.

[TXiceman]

Simply stated, COP = (useful refrigeration) / (net work).

The COP of a simple Carnot cycle can be stated as:

COP = (T1(s1-s4)) / ((T2-T1)(s1-s4))

COP = T1 / (T2-T1)

s = entropy (BTU/ (lb)(degree Rankin)
T = temperature (rankin)

Ken

[ahmadshafiq87]

Simply stated, COP = (useful refrigeration) / (net work).

The COP of a simple Carnot cycle can be stated as:

COP = (T1(s1-s4)) / ((T2-T1)(s1-s2))

s = entropy (BTU/ (lb)(degree Rankin)
T = temperature (rankin)

Ken

Hi Ken.
Thanks a lot. Correct me if i'm wrong, but s1 is entropy at T1 and s2 is entropy at T2 right? how about s4? What does it represent?

tQ for your co-operation!

[TXiceman]

I had to correct my formula...fat fingers and a slow brain.

T3 = T2
and T4 = T1

Refer to Refriferation and Air Conditioning by W.F. Stoecker

Ken

[ahmadshafiq87]

I had to correct my formula...fat fingers and a slow brain.

T3 = T2
and T4 = T1

Refer to Refriferation and Air Conditioning by W.F. Stoecker

Ken

Thanks Ken! u've made my day.