PVT Hybrid: module AL- series ak440, 22.01.2013, V1 1 PVT Hybrid, - - PowerPoint PPT Presentation

ak440, 22.01.2013, V1 1

PVT Hybrid: module AL- series

2

PVT Hybrid, the combined sollution

PHOTOVOLTAIC

+

THERMAL

3

What is the PVT module

Is an hybrid technology based on simultaneous production of :

Electrical energy from a photovoltaic module

+

Thermal energy by cooling down cristalline cells

4

Conventional photovoltaic modules

STC CONDITION T = 25°C I = 1000 W/m2 REAL EUROPEAN CONDITION T > 40°C I = 1000 W/m2

5

PVT increase electrical efficiency of conventional photovoltaic modules

6

PVT increase overall energy efficiency of conventional modules

Electrical Data

7

8

PVT Main features

♦ Hybrid PVT modules have the same dimensions of the reference photovoltaic modules (e.g. FTXXXAL is based on Aleo Solar S_79 black line) and they can be used in all combinations with the photovoltaic ones.

SAME THICKNESS

STANDARD MC4 CONNECTORS

9

PVT module electrical specification

• PVT modules have same current of aleo S79 series
• PVT modules have same voltage output of aleo S79 series but according to working temperature of

heat recovery it can be diferrent from standard configuration at NOCT

• All voltages are additive so also if a module is « differently cooled» the result in

voltage/power will be proportional on the string to average temperature of the single module

• PVT modules can be used in series with standard aleo S79 ( if not all the thermal power is needed)
• n the same MPPT tracker
• Current of the module is directly related to irradiance and not appreciably

affected by temperature

10

PVT module thermal specification

• The thermal power of the module is additive (916 W th) and they can be connected in series

and parallel to reach desired global power

• Max reccomended number of modules in series is 4 optimal, 3-4 in series (nominal pressure drop

is around 0,1 bar for each module, so max 0,4 bar for fluid circulation

• Hydraylical connections are in ½ inch brass material
• Standard flow rate is 2-2,5 l/min
• Standard pressure of hydraylical circuit is 1,5-2 bar

(max pressure of modules is 6 bar)

• For piping can be used : copper , multilayer pipes with 90°C of max T

specification , stainless steel

• Longer durability of high quality materials used (copper) in a stronger

technical solution

• Reduced maintenance to hydraulic circuit due to lower maximum T

11

PVT module thermal specification

• Max temperature that can be reached is 90-92°C, no problem with boiling point and no

damages at stagnation. System with forced circulation of fluid

• Typical hot water production ratio 70 l/m² in a day (in winter @ 20-30°C – in summer @ 50-80°C)
• The optimal surface for heating swimming pool is 60% of pool surface
• Pay attention to heat exchanger into the tank : High surface is needed (external plate heat

exchanger is prefferable)

• Mounting system is the same as in pv module
• External temperature probe, for measuring max T that the module can reach,

for differential T controller regulation

• PVT cooling-thermal circuit is compatible with all standard antifreeze mixtures

and can work with :

• Glycol-based antifreeze mixtures family (ethylene or propylene glycol)
• Our property antifreeze mixture (based on ethanol: less energy losses

due to low viscosity, no toxicity, better for environment)

12

PVT module main advantages

• Increased electrical performance
• Perfect aestetical and functional integration of two technologys : PV + TH
• No stagnation effects, no corrosion at max T
• Lower costs for integrated technology
• Longer durability (materials work at low T)
• Lower mounting structures and mounting time
• Better environment (no toxicity, lower footprint)
• Lower manitenance
• Defrost capablity

13

PVT application

PVT plant : 9,50kWp Module : FT_250AL Architectural integration

14

PVT application

PVT plant : 3,30kWp Module : FT_165Ph Architectural integration

15

PVT application

• Public and private swimming pools (electricity + heating)
• In combination with heat pumps (new Aleo-Fototherm kit) ground floor heating

for residential, commercial buildings

• Greenhouses for hydroponic growing of vegetables
• Generating hot water + electricity for several industrial processes (juices

production, milk pasteurization treatment, cheese production, textiles etc)

• Generating hot water + electricity for residential/commercial buildings (hospitals, sport

buildings, private houses, hotels etc)

• Ground floor heating for agricultural buildings (pigs, chickens)
• Car washing plants, laundry shops