The design and development of a photovoltaic thermal (PVT) collector were developed in this study, electrical efficiency assessed. To improve system performance, two types coolants employed, liquid liquid-based MnO nanofluid. Flow rates ranging from 1 to 4 liters per minute (LPM) for the interval 1.0 LPM together with 0.1% concentration manganese oxide (MnO) Various parametric investigations, i...

Ohmic heating is defined as a process which alternating electric current is passed through food with the primary purpose of heating it due to the electrical resistance and can be specially applied as an alternative heating method. In this research, Aloe vera gel concentrates having 0.5-2% soluble solids were ohmically heated up to 60°C by using four different voltage gradi...

In this paper, the interdisciplinary energy harvesting issues on piezoelectric energy harvesting were investigated using a ‘33’ mode (mechanical stress and/or electric field are in parallel to the polarization direction) lead zirconate titanate multilayer piezoelectric stack (PZT-Stack). Key energy harvesting characteristics including the generated electrical energy/power in the PZT-Stack, the ...

This study conducted an electrical energy audit activity at the Pakuwon City Mall 2 (PCM2) Surabaya Building to determine utilization of in system which includes type energy, amount used, equipment, intensity, load profile, performance Energy Saving Opportunities (ESOs) and value Consumption Intensity (ECI) air-conditioned room. From calculation results is obtained that ECI PCM2 for AC room 8.2...

We propose a free-space electro-optic transmission modulator based on multiple p-n-junction semiconductor subwavelength gratings. The proposed device operates with a high-Q guided-mode resonance undergoing electro-optic resonance shift due to direct electrical control. Using rigorous electrical and optical modeling methods, we theoretically demonstrate a modulation depth of 84%, on-state effici...

A fundamental problem that miniaturized systems, such as biomedical implants, face is limited space for storing energy, which translates to short operational life. Harvesting energy from the surrounding environment, which is virtually a boundless source at these scales, can overcome this restriction, if losses in the system are sufficiently low. To that end, the 2-μm bi-complementary metal-oxid...