Topic
Thermal efficiency
About: Thermal efficiency is a research topic. Over the lifetime, 20911 publications have been published within this topic receiving 302373 citations. The topic is also known as: thermodynamic efficiency & efficiency.
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TL;DR: In this paper, a combined system consisting of solid oxide fuel cell (SOFC), solar parabolic dish, double effect LiBr-H2O absorption chiller system and organic Rankine cycle is modeled and analyzed to design a novel poly-generation system producing electricity, space heating and cooling and domestic hot water.
142 citations
TL;DR: A novel hybrid membrane system that operates as a heat engine capable of utilizing low-grade thermal energy, which is not readily recoverable with existing technologies is presented.
Abstract: We present a novel hybrid membrane system that operates as a heat engine capable of utilizing low-grade thermal energy, which is not readily recoverable with existing technologies. The closed-loop system combines membrane distillation (MD), which generates concentrated and pure water streams by thermal separation, and pressure retarded osmosis (PRO), which converts the energy of mixing to electricity by a hydro-turbine. The PRO-MD system was modeled by coupling the mass and energy flows between the thermal separation (MD) and power generation (PRO) stages for heat source temperatures ranging from 40 to 80 °C and working concentrations of 1.0, 2.0, and 4.0 mol/kg NaCl. The factors controlling the energy efficiency of the heat engine were evaluated for both limited and unlimited mass and heat transfer kinetics in the thermal separation stage. In both cases, the relative flow rate between the MD permeate (distillate) and feed streams is identified as an important operation parameter. There is an optimal rela...
142 citations
TL;DR: In this article, an analytical expression for the water temperature of an integrated photovoltaic thermal solar (IPVTS) water heater under constant flow rate hot water withdrawal has been obtained.
142 citations
TL;DR: In this article, a review of the other works carried out in the enhancement of optical and thermal efficiency of the solar PTC is presented along with the economic analysis of the PTC followed by the future research prospects in a parabolic trough collector and economic assessment models.
142 citations
TL;DR: In this article, a combined power and refrigeration cycle is proposed, which combines the Rankine cycle and the absorption refrigeration cycles, and a parametric analysis is conducted to evaluate the effects of thermodynamic parameters on the performance of the combined cycle.
141 citations