By ZMERLY & COEng. Wael Zmerly
الرحيمهللا الرحمن بسم ﴾و على هللا قصد السبيل﴿
SOLAR SPACE HEATING SUPPORT
18-05-2015
Energy Economy & Energy Management Forum for MENA& Fourth Renewable Energy National Dialogue
Eng. Wael Zmerly - 2015
SOLAR SPACE HEATING SUPPORTEnergy Economy & Energy Management Forum for MENAFourth Renewable Energy National Dialogue 2
HISTORICAL
Heating through the stove pipeFumes through the chimney
- 500 000 : direct evacuation Scene from the 3rd century BC
Eng. Wael Zmerly - 2015
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BUT WHAT WAS BEFORE
The Sun4.5 billion years ago it started
And it can provide us energy for another 30 billion years
5500ºC
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
63500000W/m2
Eng. Wael Zmerly - 2015
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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.
Eng. Wael Zmerly - 2015
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THE SOLAR ENERGY
Passive Active
Passive Active
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PASSIVE SOLAR ENERGY
Direct Gain
Indirect GainTrombe Wall
Sun RoomGreenhouse
Eng. Wael Zmerly - 2015
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Collect, store, and distribute solar energy in winter
SUN ROOM
Properly oriented
high-performanceWindows
Reduce heating load by 20 to 50%
Eng. Wael Zmerly - 2015
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SOLAR WATER HEATING
In Summer60 to 80ºC
In WinterCloudy day30 to 40ºC
In Winter sunny day40 to 50ºCThermosiphonic
Forced circulation
Eng. Wael Zmerly - 2015
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HEATING SYSTEM
Ts
Tr
Tr=65ºC
Ts=75ºC75
6075 65
Eng. Wael Zmerly - 2015
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SOLAR HEATING POSSIBILITY
Eng. Wael Zmerly - 2015
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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
Eng. Wael Zmerly - 2015
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LOW TEMPERATURE HEATING
75ºC
65ºC
55
45
6075
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
Eng. Wael Zmerly - 2015
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VARIABLE TEMPERATURE HEATING
Ts
Tr
According to the heating curve,the supply water temperature varies with the outdoor temperature, from
35ºC to 75ºC.
Ts
Tr
6075
Weather compensation
system.
Working as low temperature heating for 70% of the
winter period. Good solution for existing installations.
Eng. Wael Zmerly - 2015
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UNDER FLOOR HEATING
Ts=45ºC Tr=37ºC
Tf=29ºC
45
37
6075
Eng. Wael Zmerly - 2015
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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 lower than 30ºC is enough to provide a high comfort.
The solar coverage is close to
100%
30
25
6075
Eng. Wael Zmerly - 2015
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SYSTEM AND EQUIPMENT
The remaining heat is stocked in a big buffer tank for continuous use.
The domestic hot water is charged by the solar.
A smart use of the hot water stratification in the
buffer result in more energy saving.
Many heating source can be connected to the buffer, like heat pump, solid fuel
boiler or even a gas boiler.
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COMBI BUFFER
Solar pump kit
Controller
DHW preparation
kit
Solar coil
Circulators for radiators
and floor heating
Complete system in one preassembled kit with the perfect components, ensure the optimum running of the system
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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
Eng. Wael Zmerly - 2015
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HOW MANY SOLAR COLLECTORS WE NEED
Eng. Wael Zmerly - 2015
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FIND THE PRESENTATION ON THE LINK
www.zmerly.com/solarheating.pdf
.حقوق النشر لدينا غير محفوظة، بإمكانكم النسخ و التوزيع بهدف تعميم الفائدة: مالحظة
Thank you
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