How to heat you building using solar energy, low temperature heating, floor heating. https://www.zmerly.com/

1. SOLAR SPACE HEATING
SUPPORT

2. SOLAR SPACE HEATINGZMERLY ACADEMY - 2019
Heating through the stove pipe
Historical
Scene from the 3rd century BC
Fumes through the chimney
500 000 BC : Direct Evacuation Scene from the 3rd century BC
Modern Heating

3. SOLAR SPACE HEATINGZMERLY ACADEMY - 2019
The Sun
4.5 billion years ago it started
And it can provide us energy for another 30 billion years5500ºC
Mean distance from earth 1.496×108 km
1m²
1374W
The surface temperature is about 5500ºC
The earth absorb from the sun 23000TW-Yr
(200×1015 kWh)
The total power used by the world
per year is 15TW
Sunlight striking Earth provides 1374W/m²
At the surface of the Sun the intensity of the
solar radiation is about 6.35×107W/m2
63500000
W/m2
THE SUN

4. SOLAR SPACE HEATINGZMERLY ACADEMY - 2019
THE SOLAR ENERGY
It is a green
energy
Everybody can
use it
It saves our
money
Untapped energy
Can be used in
several forms
In 60 min. the sun provide energy to
the earth more than the human use in
One year.

5. SOLAR SPACE HEATINGZMERLY ACADEMY - 2019
1375 W/m2
%47
%25
%9
%9
%10
SOLAR RADIATIONS

6. SOLAR SPACE HEATINGZMERLY ACADEMY - 2019
SOLAR PATH
http://zmerly.com/solar-energy1.html

7. SOLAR SPACE HEATINGZMERLY ACADEMY - 2019
Green House effect

8. SOLAR SPACE HEATINGZMERLY ACADEMY - 2019
THE TYPES OF SOLAR ENERGY
Passive Active
Passive Active

9. SOLAR SPACE HEATINGZMERLY ACADEMY - 2019
PASSIVE SOLAR ENERGY
Direct Gain
Indirect Gain
Trombe Wall
Sun Room
Greenhouse

10. SOLAR SPACE HEATINGZMERLY ACADEMY - 2019
Collect, store, and
distribute solar energy
in winter
SUN ROOM
Properly oriented
high-performance
Windows
Reduce heating load
by 20 to 50%

11. SOLAR SPACE HEATINGZMERLY ACADEMY - 2019
SOLAR WATER HEATING
In Summer
60 to 80ºC
In Winter
Cloudy day
30 to 40ºC
In Winter sunny
day
40 to 50ºCThermosiphonic
Forced
circulation

12. SOLAR SPACE HEATINGZMERLY ACADEMY - 2019
Solar Heating Support

13. SOLAR SPACE HEATINGZMERLY ACADEMY - 2019
CONVENTIONAL HEATING SYSTEM
Ts
Tr
Tr=65ºCTs=75ºC75
60
75 65 In these conditions we cannot use the Solar Heating,
nor the Heat pump

14. SOLAR SPACE HEATINGZMERLY ACADEMY - 2019
SOLAR HEATING POSSIBILITY

15. SOLAR SPACE HEATINGZMERLY ACADEMY - 2019
THE PROBLEM
How to store the
solar energy for
evening and night
use?
We need
to heat
in winter
What if it
is a
cloudy
day?
Can we do
it without
installing a
boiler?
YES WE CAN
DHW loadHeating load

16. SOLAR SPACE HEATINGZMERLY ACADEMY - 2019
LOW TEMPERATURE HEATING
75ºC
65ºC
55
45
60
75
Bigger
radiators with
lower
temperature
Small radiators with high temperature
More radiation and more comfort.
High efficiency and low losses.
Best use with condensing boilers.
Convenient for all kind of renewable energy.
EN standard
The new Low temperature standard
90ºC
70ºC
Old standard
55ºC
45ºC

17. SOLAR SPACE HEATINGZMERLY ACADEMY - 2019
VARIABLE TEMPERATURE HEATING
Ts
Tr
According to the heating curve,
the supply temperature for radiators varies with
the outdoor temperature, from 35ºC to 75ºC
Ts
Tr
60
75
Weather
compensation
Controller
Working as low
temperature
heating for 70%
of the Heating
period.

18. SOLAR SPACE HEATINGZMERLY ACADEMY - 2019
UNDER FLOOR HEATING
Ts=45ºC Tr=37ºC
Tf=29ºC
45
37
60
75
Using heating curve, the Ts varies and from
30ºC up to 35ºC
Conventional Under Floor Heating systems use
Ts = 45ºC
Special Under Floor Heating systems use
Ts = 35ºC

19. SOLAR SPACE HEATINGZMERLY ACADEMY - 2019
THERMALY ACTIVATED BUILDINGS - TABs
Floors, ceiling, walls and
beams are all used to heat the
building
Heating pipes are distributed
everywhere
Heating water is circulating in
the building structure 24/24h
Supply temperature of 25˚C
and lower is enough to
provide a high comfort
The solar
coverage is
close to
100%
25
20
60
75

20. SOLAR SPACE HEATINGZMERLY ACADEMY - 2019
SYSTEM AND EQUIPMENT
The remaining heat is stocked
in a big buffer tank for
continuous use.
The domestic hot water is
charged by the.
Many heating source can be
connected to the buffer, like
heat pump, solid fuel boiler or
even a gas boiler.
A smart use of the hot water
stratification in the buffer result
in more energy saving.

21. SOLAR SPACE HEATINGZMERLY ACADEMY - 2019
HEAT STORAGE
Complete system in one
preassembled kit with the perfect
components, ensure the optimum
running of the system
Solar pump kit
Fresh Hot Water
preparation kit
Controller
Circulator for
radiators
The smart temperature
stratification in the buffer
result in more energy saving.
Many heating sources can be
connected to the buffer, like
heat pump, solid fuel boiler,
gas or fuel boiler, Electric
Resistance, or heat recovery
from Generator exhaust.
Stratification
Plate
Thermostatic
Hot Water
Solar coil
Circulator for
floor heating
Oventrop – Regucor WHS Energy Storage System 800L

22. SOLAR SPACE HEATINGZMERLY ACADEMY - 2019
COLLECTIVE SYSTEM
Improved energy efficiency, plus
flexibility of use.
The solar energy and other sources are
cached in a central buffer.
Each user can chose the mode
using the solar energy, for
domestic hot water, radiators or
floor heating.
A heat meter can be added to
allow an exact calculation of the
water and energy consumption of
each dwelling

23. SOLAR SPACE HEATINGZMERLY ACADEMY - 2019
HOW MANY SOLAR COLLECTORS WE NEED

24. SOLAR SPACE HEATINGZMERLY ACADEMY - 2019
SOFTWARE SIMULATION
Solar Fraction for heating = 70.3%

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