General Information on needs of hot water
When choosing a solar system for hot water we must first determine our needs for hot
water, in quantity as well as in preferred temperature of consumption. The typical
calculation for the temperature for consumption is 45ºC, but for the calculation of required
quantity you must take into account the daily needs.
Calculation of needs for hot water usage
In family residences, the needs for hot water remain stable during the whole year. An
indication for the needs is given by the number of individuals living in the building (or
apartment). Usually, the per capita daily consumption of hot water at 45ºC is calculated
taking into consideration the following:
Low consumption:
35 liters per capita / day
Medium consumption: 60 liters per capita / day
High consumption:
80 liters per capita / day
In the case where we want to connect to the solar installation the washing machine and the
dishwasher, we would have to increase the calculated daily needs of consumption as
follows:
Washing Machine:
20 liters / day (1 wash per day)
Dishwasher:
20 liters / day (1 wash per day)
Example:
A family of 4 persons needs around 240 liters of hot water daily in order to have a medium
daily consumption. (60 liters per capita x 4 persons). If we include a washing machine and
dishwasher, then we must calculate a consumption of 280 liters per day.
In buildings such as hotels, hostels,
etc…, the needs for hot water are related to the amount
of customers. In this case the daily consumption is calculated by the average occupancy
of the rooms, from the period of May up until August. Using this basis, the size of the pro-
posed installation is determined. Here below we indicate the per capita daily need for hot
water at 45ºC
Hostels with rooms with shared bath: 35 liters / person / day
Hostels:
40 liters / person / day
2 Star Hotels:
50 liters / person / day
3 Star Hotels:
80 liters / person / day
4 Star Hotels:
100 liters / person / day
Camping:
60 liters / person / day
6
2) HOTELS - HOSTELS
1) RESIDENCES
General Information
Summary of Contents for 1000/BL1
Page 1: ......
Page 12: ...CLIMATIC DATA OF SELECTED WORLD CITIES 12...
Page 13: ...Energyoutputofthecollectorinseveralcitiesoftheworld inkWh m2 13...
Page 30: ...Assembly diagram of the support base for one 30...
Page 34: ...Assembly diagram of the support base for three 34...
Page 37: ...Connectionofcollectorsandaccessories 37...
Page 39: ...HYDRAULIC KIT 39...
