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RCR Efficiency Calculation

The document contains temperature and efficiency data from heat exchanger tests. For a washing range test, the fresh water temperature increased from 24.8°C to 62.8°C, and the drain water increased from 31.1°C to 84.3°C, resulting in an efficiency of 63.9%. For an MCS-02 test, the fresh water increased from 24°C to 52°C and the drain water from 50°C to 75°C, with an efficiency of 54.9%. The data suggests the washing range heat exchanger performed better than the MCS-02 unit.

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0% found this document useful (0 votes)
51 views6 pages

RCR Efficiency Calculation

The document contains temperature and efficiency data from heat exchanger tests. For a washing range test, the fresh water temperature increased from 24.8°C to 62.8°C, and the drain water increased from 31.1°C to 84.3°C, resulting in an efficiency of 63.9%. For an MCS-02 test, the fresh water increased from 24°C to 52°C and the drain water from 50°C to 75°C, with an efficiency of 54.9%. The data suggests the washing range heat exchanger performed better than the MCS-02 unit.

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© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as XLSX, PDF, TXT or read online on Scribd
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84.3 62.

8
31.1 24.8

t1 24.8
t2 62.8
t3 84.3

t2-t1 38
t3-t1 59.5
64%

MCS -02

T1= Temperature in fresh makeup water before the heat exchanger 24


T2= Temperature in fresh makeup water after the heat exchanger 52
T3= Temperature in drain water temperature before the heat exchanger 75

T2-T1/T3-T1 28 51

effeciency 54.9

Washing Range

T1= Temperature in fresh makeup water before the heat exchanger 24.8
T2= Temperature in fresh makeup water after the heat exchanger 62.8
T3= Temperature in drain water temperature before the heat exchanger 84.3

T2-T1/T3-T1 38 59.5

effeciency 63.9
S# Set Point Wash Box Running Temperature Remarks
1 90 88.9
2 90 88.7
3 90 84.1
4 80 101
5 80 70 PT-100 out of order
6 80 85.6
7 80 84.3
8 70 98
9 70 86.5
10 60 59.7
11 60 72.3
12 60 72.5
13 60 65.5
14 60 65.8
15 25 45.1
16 25 25
Washing Range
E Actual Heat Transfer 0.63865546218
Max Possible heat Transfer

Value Unit
Qa m 15133 Kg/Hr
C 4.2 KJ/Kg.C
Fresh Water T2 62.8 C
T1 24.8 C
dT 38

Qa 2415226.8 KJ/Hr

Qd m 15133 Kg/Hr
C 4.2 KJ/Kg.C
Drain Water T2 84.3 C
T1 31.1 C
dT 53.2

Qd 3381317.52

dtmax 59.5

Qmax 3781736.7

Designed
Actual Qrec Max Qrec
Version Flow(m3 (KJ/h) (KJ/h)
/h)

RCR 30 18 2415227 3781737


174.0343

7.251429

7000

116.6667

10-Feb m3/day m3/hr kg/hr


WR 11.5hr 174.0343 15.13342 15133.42

Kj/hr
230685.9 2652888

2.514453

Current Designed
Decrese in
Effectivn Effectivn Effeciency
ess (%) ess (%)

63.9 70 6.1
MCS 02
E Actual Heat Transfer 0.5490196078
Max Possible heat Transfer

Value Unit
Qa m 8281 Kg/Hr
C 4.2 KJ/Kg.C
Fresh Water T2 52 C
T1 24 C
dT 28 C

Qa 973846 KJ/Hr

Qd m 8281 Kg/Hr
C 4.2 KJ/Kg.C
Drain Water T2 75 C
T1 50 C
dT 25

Qd 869505

dtmax 51 267807.54

Qmax 1773790 266068.53

4922268

Current
Version Designed Actual Qrec Max Qrec Effectivness
Flow(m3/h) (KJ/h) (KJ/h)
(%)

RCR 30 18 973846 1773790 54.9


174.0343

7.251429

7000

116.6667

10-Feb
WR 11.5hr
m3/day m3/hr
MCS2 18.5hr 153.2168 8.281989 8281.989

15.1

KJ/hr

4.66mmbtu
3662.76
1241653 MW/hr
Designed
Effectivness Decrese in
Effeciency
(%)
0.074
70 15.1
44.4

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