Thermoelectric Generator Using Passive Cooling

Performance analysis of a thermoelectric generator with closed and flooded passive cooling in small-scale space

Energy for Sustainable Development ◽

10.1016/j.esd.2019.05.002 ◽

2019 ◽

Vol 51 ◽

pp. 21-31 ◽

Cited By ~ 1

Author(s):

Jiming Gu ◽

Dong Han ◽

Yun Liu ◽

Yaning Li ◽

Chuan Jin ◽

...

Keyword(s):

Performance Analysis ◽

Thermoelectric Generator ◽

Scale Space ◽

Passive Cooling ◽

Small Scale

Download Full-text

Performance of a Thermoelectric Generator Partially Illuminated with Highly Concentrated Light

Energies ◽

10.3390/en13143627 ◽

2020 ◽

Vol 13 (14) ◽

pp. 3627 ◽

Cited By ~ 1

Author(s):

Abdelrahman Lashin ◽

Mohammad Al Turkestani ◽

Mohamed Sabry

Keyword(s):

Performance Optimization ◽

Figure Of Merit ◽

Thermoelectric Generator ◽

Low Cost ◽

Photovoltaic Cells ◽

Coupled System ◽

Passive Cooling ◽

Additional Energy ◽

Power Generator ◽

Generator Output

In order to maximize the output of concentrator Photovoltaic cells and maintain their efficiencies, the operating temperature of concentrator photovoltaic cells must be reduced. A way that could reduce such photovoltaic temperature is by thermally attaching them on top of a thermoelectric generator. A thermoelectric generator in such coupling will act as a low-cost passive-cooling subsystem, as well as a power generator for producing additional energy from the rejected photovoltaic heat. Increasing the area of the proposed photovoltaic cells relative to the thermoelectric generator’s hot-side area will result in an increase in the thermoelectric generator’s electrical output, but may also result in overheating the photovoltaic cells, hence reducing their performance. Optimization has to be performed for the photovoltaic covering percentage relative to the hot-side area in order to maximize the output of the whole coupled system. This work investigates the electrical and thermal performance of thermoelectric generators in the case of partial illumination of their hot side. Experiments have been carried out using three thermoelectric generator modules with different areas, and under two levels of concentrated illumination. The thermoelectric generator output voltage, current, and temperature have been measured, and the figure-of-merit and maximum power of the thermoelectric generator (TEG) has been calculated and demonstrated.

Download Full-text

Potential Application of a Thermoelectric Generator in Passive Cooling System of Nuclear Power Plants

Journal of Electronic Materials ◽

10.1007/s11664-016-5191-0 ◽

2016 ◽

Vol 46 (5) ◽

pp. 3109-3114 ◽

Cited By ~ 1

Author(s):

Dongqing Wang ◽

Yu Liu ◽

Jin Jiang ◽

Wei Pang ◽

Woon Ming Lau ◽

...

Keyword(s):

Potential Application ◽

Nuclear Power ◽

Power Plants ◽

Nuclear Power Plants ◽

Thermoelectric Generator ◽

Cooling System ◽

Passive Cooling ◽

Passive Cooling System

Download Full-text

Impact of roof shading on building energy performance in warm & humid climatic places of India

iCRBE Procedia ◽

10.32438/icrbe.202037 ◽

2020 ◽

pp. 50-64

Author(s):

Kuladeep Kumar Sadevi ◽

Avlokita Agrawal

Keyword(s):

Energy Consumption ◽

Energy Conservation ◽

Energy Performance ◽

General Assumption ◽

Climatic Conditions ◽

Building Envelope ◽

Passive Cooling ◽

Base Case ◽

U Value ◽

The Impact

With the rise in awareness of energy efficient buildings and adoption of mandatory energy conservation codes across the globe, significant change is being observed in the way the buildings are designed. With the launch of Energy Conservation Building Code (ECBC) in India, climate responsive designs and passive cooling techniques are being explored increasingly in building designs. Of all the building envelope components, roof surface has been identified as the most significant with respect to the heat gain due to the incident solar radiation on buildings, especially in tropical climatic conditions. Since ECBC specifies stringent U-Values for roof assembly, use of insulating materials is becoming popular. Along with insulation, the shading of the roof is also observed to be an important strategy for improving thermal performance of the building, especially in Warm and humid climatic conditions. This study intends to assess the impact of roof shading on building’s energy performance in comparison to that of exposed roof with insulation. A typical office building with specific geometry and schedules has been identified as base case model for this study. This building is simulated using energy modelling software ‘Design Builder’ with base case parameters as prescribed in ECBC. Further, the same building has been simulated parametrically adjusting the amount of roof insulation and roof shading simultaneously. The overall energy consumption and the envelope performance of the top floor are extracted for analysis. The results indicate that the roof shading is an effective passive cooling strategy for both naturally ventilated and air conditioned buildings in Warm and humid climates of India. It is also observed that a fully shaded roof outperforms the insulated roof as per ECBC prescription. Provision of shading over roof reduces the annual energy consumption of building in case of both insulated and uninsulated roofs. However, the impact is higher for uninsulated roofs (U-Value of 3.933 W/m2K), being 4.18% as compared to 0.59% for insulated roofs (U-Value of 0.33 W/m2K).While the general assumption is that roof insulation helps in reducing the energy consumption in tropical buildings, it is observed to be the other way when insulation is provided with roof shading. It is due to restricted heat loss during night.

Download Full-text