PVCOOL-SP95 High Efficiency Concentration Solar module

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Both conductive and convective heat transfer are significantly affected by the mounting conditions of the PV module. A rear surface which cannot exchange heat with the ambient (i.e., a covered rear surface such as that directly mounted on a roof with no air gap), will effectively have an infinite rear thermal resistance. Similarly, convection in these conditions is limited to the convection from the front of the module. Roof integrated mounting thus causes higher operating temperature, often increasing thetemperature of the solar modules without heat sink by 40?C above ambient air

Impact of Mounting Conditions

PTC rating is very important because it is only used for Rebate calculation in USA.

 PVCOOL-SP95 has PTC power rating 93 Watts compared to 82-84 watts similar wattage modules without cooling fins.

the typical module at 48?C respectively.

the worst at 58?C and

of 28?C is PVCOOL-SP95 ,

The best module operated at a NOCT

module types. 

with increasing solar irradiance for different

Temperature increases, above ambient levels,

The equations for solar radiation and temperature difference between the module and air show that both conduction and convective losses are linear with incident solar insolation for a given wind speed, provided that the thermal resistance and heat transfer coefficient do not vary strongly with temperature. The NOCT for best case, worst case and average PV modules are shown below. The best case include aluminium fins at the rear of the module for cooling which reduces the thermal resistance and increases the surface area for convection.

Mounting = open back side.

Wind Velocity = 1 m/s

Air Temperature = 20?C

Irradiance on cell surface = 1000 W/m2 for PTC test

Irradiance on cell surface = 800 W/m2 (NOCT) test

All PV modules are typically STC rated at 25 ?C under 1 kW/m2. However, when operating in the field, they typically operate at higher temperatures and at somewhat lower insolation conditions. In order to determine the power output of the solar cell, it is important to determine the expected operating temperature of the PV module. The Nominal Operating Cell Temperature (NOCT) and PVUSA Test Conditions or "PTC"  is defined as the Temperature and Power reached by open circuited cells in a module under the conditions as listed below:

10 years limited power warranty of 90% minimum specified of power rating  

Limited Warranty

Telemetry equipment

   and railroad

Lighting systems for emergency use

Cathodic protection

Electricity for on/off grid systems

Water pumping for various agriculture 

Desalination systems

Telecommunication

                                                                                     Applications

as Desalination water plants,  Algae plants  and Biodiesel production 

3. Due to the front/rear cooling surface ratio 1/20 , 95% of heat dissipates at rear side.  Module can be used for hybrid  electricity /thermal heating cogeneration in such application

2. Module can be used for normal 1 sun irradiation as 95 Watts module with advantages of 15-25 degree lower operating temperature. That increases electrical output of cells (7-12%), reduces thermal cycling stresses and ageing processes. Best application for this is BIPV. It is estimated that an average Building Integrated PV module operates at a temperature of up to 40 deg.C above ambient. This represents a loss of performance of 20% of power produced.

1. Solar module produces 200Watts electrical and 540watts thermal power at 2 sun concentration with passive convectional cooling. It dramatically reduces cost PV system and energy generation. Such applications are solar tracking concentrators with reflectors or Fresnel lenses, static concentrators.

Module has multiple advantages and applications

PVCOOL-SP95 watt monocrystalline concentration module made with air cooling aluminium heat sink at rear side for minimizing the temperature of cells and transfer most of thermal heat to rear side.

PVCOOL-SP95 watt monocrystalline concentration module made with air cooling aluminium heat sink at rear side for minimizing the