Solar Heating Support

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



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



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.



THE SOLAR ENERGY

Passive Active

Passive Active



PASSIVE SOLAR ENERGY

Direct Gain

Indirect GainTrombe Wall

Sun RoomGreenhouse



Collect, store, and distribute solar energy in winter

SUN ROOM

Properly oriented

high-performanceWindows

Reduce heating load by 20 to 50%



SOLAR WATER HEATING

In Summer60 to 80ºC

In WinterCloudy day30 to 40ºC

In Winter sunny day40 to 50ºCThermosiphonic

Forced circulation



HEATING SYSTEM

Ts

Tr

Tr=65ºC

Ts=75ºC75

6075 65



SOLAR HEATING POSSIBILITY



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



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



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.



UNDER FLOOR HEATING

Ts=45ºC Tr=37ºC

Tf=29ºC

45

37

6075



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



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.



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



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



HOW MANY SOLAR COLLECTORS WE NEED



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

Date post:	21-Jul-2015
Category:	Engineering
Upload:	zmerly-co
View:	42 times
Download:	6 times

Solar Heating Support

Engineering