Calculation Method - Haier H-MRV Series Service Manual

■ AU48**

1) Calculation method

Calculation method of refrigerating capacity-Refrigerating capacity to be known = Refrigerating
capacity x (1) x (2) x (3) x (4) x (5) W
(1) Capacity compensation value of indoor
air wet-bulb temperature condition
1.2
1.1
1.0
0.9
0.8
15 20 24
indoor air wet-bulb temperature(*)
(4) Fall of refrigerant pipe of indoor and outdoor
unit, capacity compensation value of pipe length
50
40
30
20
10
0
-10
-20
-30
-40
-50
10 20 30 40 50 60 70 80 90 100 110 120
25
2) Calculation method of heating capacity—Heating capacity to be known = Heating capacity ((1) x (2) x (3) x (4) x (5) x (6)) W
(1) Capacity modification under indoor
air wet-bulb temperature condition
1.2
1.1
1.0
0.9
0.8
20
15
indoor air dry-bulb temperature(*)
(4) Fall of refrigerant pipe of indoor and outdoor unit,
capacity compensation value of pipe length
50
40
30
20
10
0
-10
-20
-30
-40
-50
10 20 30 40 50 60 70 80 90 100 110 120
25
Length of refrigerant pipe (corresponding length) L (m)
Capacity compensation value of outdoor air dry-bulb
temperature condition
1.2
1.1
1.0
0.9
-5 0 5 10
outdoor air dry-bulb temperature(*)
(2) Capacity modification under outdoor air wet-bulb temperature condition (3) Capacity modification
1.2
1.1
1.0
0.9
0.8
0.7
24
0.6
0.5
-15 -10
outdoor air wet-bulb temperature(*)
>a__WcU[S^ <[c >a`V[e[a`Wc
15 20 25 30 35
Outdoor unit
lo
ho
he
ha
la
A
hc hb
lb
B
lc
C
L(m) Length of refrigerant
pipe (corresponding length)
L (m)
-5 0 5
Outdoor unit
lo
ho
he
ha
hb
A
lb
B
hc
le
C
H=ho+(the max. value of ha, hb, hc)
L=lo+(the max. value of la, lb, lc)
-194-
(3) Capacity modification value
under airflow variation rate of
indoor unit group (only for
airflow type unit)
1.1
1.0
0.9
80 90 100
40 43
airflow variation rate
(5) Capacity compensation suitable
for total capability of indoor unit
group (cooling)
120
100
80
60
40
20
0
20 40 60 80 100 120 135
Total capacity of indoor unit group
value under airflow variation
rate of indoor unit group
1.1
1.0
0.9
80 90 100 110 120
10 15
(5) Capacity compensation suitable
for total capability of indoor unit
group (heating)
120
100
80
60
40
20
0
20 40 60 80 100 120 135
Total capacity of indoor unit group
110 120