elco AEROTOP T Series, Planning Document

Page: 10 / 88

Planning Notes
Determining Heat Output and Allowances
With hot water Without hot water
Mid-level
altitude Qh = Oil consumption (Ltr.)
300
Qh = Oil consumption (Ltr.)
265
In excess of
800 m above Qh = Oil consumption (Ltr.)
330
Qh = Oil consumption (Ltr.)
295
Oil heater
With hot water Without hot water
Mid-level altitude Qh = Gas consumption (m
3
) x 0.93
300
Qh = Gas consumption (m
3
) x 0.93
265
In excess of
800 m above Qh = Gas consumption (m
3
) x 0.93
330
Qh = Gas consumption (m
3
) x 0.93
295
Gas heater
Retrofitting an existing oil or gas
heater with heat pump:
The heating capacity can be calculated
based on the existing average fuel
consumption.
Qh = Heat demand in kW
Allowances to the Heat Pump Output
Off Periods
Blocked Times
The off periods (blocked times)
theoretically should be considered by
the following formula and the heat
demand should be multiplied with the
factor f.
Hot Water Allowances
The allowance for generating hot water
can be taken into account as follows:
Example
Number of people
4
Hot water demand
50 liters
per person and day.
Heat demand allowance:
Q ˙ WW = 4 x 0,085 kW = 0,34 kW
10
Hot water demand
per person
and day (l)
Additional heating output
per person (kW)
Tw = 45°C
∆ T = 35 K
30 0,051
40 0,068
50 0,085
60 0,102
f = 24 h
24 h - off period per day (h)