Gree GMV-S280W/A-X

GMV5 Home DC Inverter Multi VRF Units
41
Model selection principle: calculate ―water consumption of user‖ according to ―number of
people and per capita water consumption‖ and ―water consumption of bathroom accessories‖
respectively, and take the larger value. And then calculate ―water storage capacity of water tank‖,
that is, cubic capacity of water tank.
8.3.6.1 Calculation of water consumption
According to related standard or experience
(1) According to per capita water consumption
Construction
Unit
Designed daily water
consumption (L)
Using water
temperature (℃)
Residence
Per day, per capita
40~80
60
Villa
Per day, per capita
70~110
60
(2) According to water consumption of bathroom accessories
Bathroom accessory
Using water temperature (℃)
One-time water consumption (L)
Bathtub (with shower)
40
150
Bathtub (without shower)
40
125
Shower
37~40
70~100
Washbasin
30
3
In this case, there are five persons; one bathtub (with shower), two showers, three
washbasins;
Calculate ―water consumption of user‖ according to ―number of people and per capita water
consumption‖: 5*70=350L；
Calculate ―water consumption of user‖ according to ―water consumption of bathroom
accessories‖: 150+70*2+3*3=299L；
Take simultaneous ultilization rate as 0.7; then total water consumption of user
=350L*0.7=245L；
Calculation for water consumption of user
According to per capita consumption
Item
Quantity
Per capita water consumption (per
day, per capita) L
People
5 persons
70
Total water
consumption
5*70=350L；
According to bathroom accessories
Item
Quantity
One-time water consumption of unit
quantity (L)
Bathtub (with shower)
One
150
Shower
Two
70
Washbasin
Three
3
Total water
consumption
150+70*2+3*3=299L
Simultaneous ultilization rate: 0.7 at most
Final defined total water consumption: 350L*0.7=245L
8.3.6.2 Calculation for water storage capacity (cubic capacity) of water tank
Water storage capacity of water tank=(t model selection designed water temperature- t
cooling water entering temperature)* total water consumption of user/(t heating temperature of
water tank- t cooling water entering temperature)
t model selection designed water temperature—— in consideration of the temperature when