4. System design of thermoelectric cooling-photovoltaic (TEC-PV) device

Heat transfer process: A steady state is reached when temperature of air remains constant with heat transfer from the cold side fins. Cold side fins are placed both on supply duct and inside room. Hot side fins are placed on exhaust duct and exterior of room wall surface. The height of heat transfer surface inside the duct is 0.5 m and height of heat transfer surface inside the room is 2.5 m. The condensation phenomenon at initial dehumidification will result in rapid temperature drop of cold side fins. The dehumidification will continue further at steady temperature of cold side fins. In order to improve the performance of fins for dehumidification, rapid elimination of condensed water is necessary. This is achieved by specially treated heat

Building-Integrated Thermoelectric Cooling-Photovoltaic (TEC-PV) Devices

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The schematic of a building zone with two stage cooling through TEC modules by means of supply duct and wall mounted TEC modules with solar PV façade exhaust duct is illustrated in Figure 2. The performance characteristics with voltage variation of analyzed TEC1-12710 modules in TEC calculator is provided in Figure 3. The variation in theoretical values of COP (cooling) and temperature (cold) for ZTm = 1 is provided in Figure 4. The variation in theoretical values of cooling capacity with temperature difference is provided in Figure 5. The variation of theoretical heat transfer coefficient with height of heat transfer surface (fins) is provided in Figure 6. The theoretical variation of cooling capacity load served inside room with height of heat transfer surface (fins) is provided in Figure 7. The variation of theoretical exergy of air cooled inside the room with cold side temperature and Tout at 306 K is illustrated in Figure 8. All the results are based on theoretical values irrespective of actual performance

transfer surfaces (fins) with superhydrophilic or super water repellant surfaces [13].

Figure 2. Schematic of a building room zone with TEC modules and PV ventilated façade.

values of the prototype TEC-PV device.
